Low Voltage Insulated Case Circuit Breaker UL489 Circuit Breaker Operating Instructions Catalog No.: CBIM-01001-0814 DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. 923 99994 174 3ZX1812-0WL20-1AN2 NOTE These instructions do not purport to cover all details or variations in equipment, or to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise, which are not covered sufficiently for the purchaser's purposes, the matter should be referred to the local Siemens sales office. The contents of this instruction manual shall not become part of or modify any prior or existing agreement, commitment or relationship. The sales contract contains the entire obligation of Siemens. The warranty contained in the contract between the parties is the sole warranty of Siemens. Any statements contained herein do not create new warranties or modify the existing warranty. TRADEMARKS Unless otherwise noted, all names identified by (R) are registered trademarks of Siemens AG or Siemens Industry, Inc. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner. Symbols Visual examination Hook Slotted-type screwdriver Cruciform screwdriver Philips (PH), PoziDriv (PZ) Torx screwdriver (T) Hex socket screwdriver Open end wrench Tightening torque 10 Nm 89 lb-in Cable tie Add in writing 1 First step of action sequence Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Cradle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit breaker frame type label . . . . . . . . . . . . . . . . . . . . Type label circuit breaker frame . . . . . . . . . . . . . . . . . . . . Frame designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trip unit designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rating plug label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cradle type label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Standard specifications . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 4 Packing and Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lifting with a crane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lifting with a Lifting Bar Assembly . . . . . . . . . . . . . . . . . . Lifting bar assembly (3-pole) . . . . . . . . . . . . . . . . . . . . Lifting the circuit breaker . . . . . . . . . . . . . . . . . . . . . . . 5 6 7 Frame sizes / dimension drawings . . . . . . . . . . . . . . . . 7-1 Frame size I, fixed-mounted version . . . . . . . . . . . . . . . . . 7-1 Frame size II, fixed-mounted version . . . . . . . . . . . . . . . . 7-6 Frame size II, 3000 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9 Frame size III, fixed-mounted version . . . . . . . . . . . . . . . 7-10 Door cut-outs, fixed-mounted circuit breaker . . . . . . . . . 7-14 Frame size I, draw-out version . . . . . . . . . . . . . . . . . . . . 7-16 Frame size II, draw-out version . . . . . . . . . . . . . . . . . . . . 7-21 Frame size III, draw-out version . . . . . . . . . . . . . . . . . . . 7-25 Door cut-outs for draw-out circuit breakers . . . . . . . . . . . 7-28 Frame size II / III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29 External sensor for neutral conductor . . . . . . . . . . . . . . . 7-30 Further dimension drawings . . . . . . . . . . . . . . . . . . . . . . 7-32 8 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Auxiliary switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 Shunt Trip, Undervoltage Trip / Electrical closing lockout . 8-4 Closing Coil / Electrical CLOSE . . . . . . . . . . . . . . . . . . . . 8-5 Motor-operated mechanism . . . . . . . . . . . . . . . . . . . . . . . 8-6 Remote Bell Alarm Reset . . . . . . . . . . . . . . . . . . . . . . . . . 8-6 Trip unit circuitry for ETU745-776 . . . . . . . . . . . . . . . . . . . 8-7 With Breaker Status Sensor (BSS) and metering module . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7 Metering module only . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8 Breaker Status Sensor (BSS) only . . . . . . . . . . . . . . . . 8-9 9 Electronic components . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Trip units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Overview of function . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Trip unit ETU745 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Trip unit ETU748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6 Trip unit ETU776 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10 Protective functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12 ETU displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18 Rating plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-44 Ground-fault protection modules . . . . . . . . . . . . . . . . . 9-45 Replace the trip unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-49 Internal trip unit self-test on the overcurrent tripping function . . . . . . . . . . . . . . . . . 9-51 Sealing and locking device . . . . . . . . . . . . . . . . . . . . . 9-53 CubicleBUS Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-54 System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 9-54 Internal modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-55 External CublicleBUS modules . . . . . . . . . . . . . . . . . 9-79 External sensor for neutral conductor . . . . . . . . . . . . . 9-92 External voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . 9-93 Breaker Data Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94 View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94 Connection versions . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94 Voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-97 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-97 Handheld test device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98 View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98 Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-99 Voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-99 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-99 Finishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-102 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-102 2-1 2-1 2-1 2-2 2-2 2-3 2-3 4-1 4-1 4-1 4-2 4-3 4-3 4-4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Mounting position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Mounting on horizontal surface - Mounting tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Cubicle and ventilation . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Main terminal connections . . . . . . . . . . . . . . . . . . . . . . . 5-10 Cradle connections . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Horizontal connections for fixed mount breakers . . . . 5-10 Vertical connections for fixed mount circuit breakers . 5-11 Front connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 Wire connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23 Connecting the main conductors . . . . . . . . . . . . . . . . . . 5-25 Secondary wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26 Breaker Secondary Disconnect . . . . . . . . . . . . . . . . . 5-27 Cradle Secondary Disconnect Block . . . . . . . . . . . . . 5-28 Secondary disconnect terminal blocks . . . . . . . . . . . . 5-29 Wiring in cradle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Preparation of draw-out circuit breaker . . . . . . . . . . . . . . 6-1 Inserting the circuit breaker into the cradle . . . . . . . . . 6-1 Positions of the circuit breaker in the cradle . . . . . . . . . 6-2 Unlocking the racking handle / withdrawing the racking handle . . . . . . . . . . . . . . . . . . 6-3 Racking circuit breaker into connected position . . . . . . 6-3 Inserting racking handle . . . . . . . . . . . . . . . . . . . . . . . . 6-3 Charge the closing spring . . . . . . . . . . . . . . . . . . . . . . . . 6-4 Check list for commissioning . . . . . . . . . . . . . . . . . . . . . . 6-6 Closing the circuit breaker . . . . . . . . . . . . . . . . . . . . . . . . 6-7 Opening the circuit breaker . . . . . . . . . . . . . . . . . . . . . . . 6-7 Tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 Reclosing a circuit breaker tripped by the trip unit . . . . . . 6-9 Removing from service . . . . . . . . . . . . . . . . . . . . . . . . . 6-11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12 I 10 11 12 Reset the reclosing lockout and the Bell Alarm . . . . 10-1 Resetting the Bell Alarm . . . . . . . . . . . . . . . . . . . . . . . . 10-1 Resetting the Bell Alarm with reclosing lockout (optional) 10-2 Field Installation of a reclosing lockout . . . . . . . . . . . . . 10-3 Removing the automatic reset mechanism . . . . . . . . 10-4 Installing the remote Bell Alarm reset . . . . . . . . . . . . . . 10-5 Mounting remote reset solenoid and cut-off switch . . 10-5 Connecting wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6 Function test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7 Updating the options label . . . . . . . . . . . . . . . . . . . . . 10-7 Shunt Trip / Closing Coil / Undervoltage release . . . 11-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Installing shunt trips, closing coils, and undervoltage devices 11-2 Installing optional signaling switches on shunt trips, closing coils, and undervoltage devices . . . . . . . . . . . . . . . . . . . 11-3 Setting delay times on undervoltage release . . . . . . . . . 11-3 Field Installation of a cut-off switch for shunt trips and closing coils . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4 Mechanical function test . . . . . . . . . . . . . . . . . . . . . . . . 11-6 Connecting wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6 Final tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7 Electrical function test . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7 Updating the options label . . . . . . . . . . . . . . . . . . . . . . . 11-9 Auxiliary and control switches . . . . . . . . . . . . . . . . . . 12-1 Installing internal auxiliary switches S1 - S4 . . . . . . . . . 12-2 Installing the ready-to-close switch S20 . . . . . . . . . . . . . 12-3 Trip Signaling Switches . . . . . . . . . . . . . . . . . . . . . . . . . 12-4 Trip Signaling Switches S13, S24, and S26 . . . . . . . . 12-5 Control switches - Connecting wires . . . . . . . . . . . . . . . 12-6 Communication switches . . . . . . . . . . . . . . . . . . . . . . . . 12-6 Connecting secondary wiring . . . . . . . . . . . . . . . . . . . . . 12-6 Updating the options label . . . . . . . . . . . . . . . . . . . . . . . 12-6 Mechanism Operated Contacts (MOC) . . . . . . . . . . . . . 12-7 MOC Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-8 MOC Installation Instructions . . . . . . . . . . . . . . . . . . . 12-8 Order numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13 Combination of MOC and mutual mechanical interlocking module . . . . . . . . . . 12-14 Mounting of MOC and mutual mechanical interlocking module on the cradle . . . . . . . . . . . . . . 12-14 13 Motor-operated mechanism . . . . . . . . . . . . . . . . . . . . Installing the motor operator . . . . . . . . . . . . . . . . . . . . . Optional motor disconnect switch on the front panel . . . Updating the options label . . . . . . . . . . . . . . . . . . . . . . . 14 Indicators and operating elements . . . . . . . . . . . . . . . 14-1 Limiting Access to OPEN/CLOSE Buttons . . . . . . . . . . . 14-1 EMERGENCY OPEN button . . . . . . . . . . . . . . . . . . . . . 14-3 II 13-1 13-1 13-3 13-4 Operations counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4 15 Locking devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1 Key Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1 Breaker mounted key lock . . . . . . . . . . . . . . . . . . . . . . 15-2 Cradle mounted key lock . . . . . . . . . . . . . . . . . . . . . . . 15-4 Installing racking handle key lock . . . . . . . . . . . . . . . . 15-9 Installing a Bell Alarm cover key lock . . . . . . . . . . . . 15-14 Padlocking provisions . . . . . . . . . . . . . . . . . . . . . . . . . . 15-15 Padlock locking the breaker OPEN . . . . . . . . . . . . . . 15-16 Padlock Locking device for shutter . . . . . . . . . . . . . . 15-18 Padlock Locking device for guide rails . . . . . . . . . . . 15-19 Padlock Locking device for racking handle . . . . . . . . 15-19 Padlock Locking device for spring charging lever . . . 15-19 CLOSE/OPEN padlock kit . . . . . . . . . . . . . . . . . . . . . 15-21 16 Sealing covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1 17 Mechanical interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1 Field installation of CLOSE / OPEN buttons blocking device 17-2 Cubicle door interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-3 Installing the interlock mechanism to the cradle . . . . . 17-4 Cubicle door interlock drill pattern . . . . . . . . . . . . . . . . 17-8 Installing catch on the cubicle door . . . . . . . . . . . . . . 17-10 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-10 Interlock to prevent racking with cubicle door open . . . 17-11 Coding between circuit breaker and cradle . . . . . . . . . . 17-12 18 Additional options for the cradle . . . . . . . . . . . . . . . . . 18-1 Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1 Field installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-8 Truck Operated Contacts - TOC (Cradle Accessory) . . . 18-9 19 Mechanical circuit breaker interlocking . . . . . . . . . . . 19-1 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2 Mechanical interlocking two sources (open transition) 19-3 Mechanical interlocking two sources with a tie circuit breaker (open transition) . . . 19-4 Mechanical interlocking feeder circuit breakers (single load, open transition) . . . . . . . . . . . . . . . . . . . . 19-5 Mechanical interlocking three sources (open transition to standby system) . . . . . . . . . . . . . . . 19-6 Mechanical interlocking source and tie circuit breaker (open transition to standby system) . . . . . . . . . . . . . . . 19-7 Installing interlocking module . . . . . . . . . . . . . . . . . . . . . 19-8 Installing intermediate shaft and coupling . . . . . . . . . . 19-8 Fitting interlocking module . . . . . . . . . . . . . . . . . . . . . 19-11 Mounting the Bowden cables . . . . . . . . . . . . . . . . . . 19-12 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-14 21 Arc chute covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-1 Field installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-1 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-4 22 Door sealing frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-1 23 Plexiglas breaker cover . . . . . . . . . . . . . . . . . . . . . . . . 23-1 24 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation for maintenance . . . . . . . . . . . . . . . . . . . . . Opening the circuit breaker and discharging the closing spring . . . . . . . . . . . . . . . . . . Removing the circuit breaker from the cradle . . . . . . . Changing front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing front panel . . . . . . . . . . . . . . . . . . . . . . . . . Reinstalling the front panel . . . . . . . . . . . . . . . . . . . . . Checking arc chutes . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing arc chutes . . . . . . . . . . . . . . . . . . . . . . . . . Visual inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-6 Installing arc chutes . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-7 Inspection of arc chute covers . . . . . . . . . . . . . . . . . . . . . 24-8 Checking contact erosion . . . . . . . . . . . . . . . . . . . . . . . . 24-9 Exchanging the primary disconnects . . . . . . . . . . . . . . . 24-11 Exchanging the finger cluster . . . . . . . . . . . . . . . . . . 24-11 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-13 Exchanging the stab tip . . . . . . . . . . . . . . . . . . . . . . . 24-14 Catalog numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-15 Cleaning and greasing the circuit breaker . . . . . . . . . . . 24-16 24-1 24-2 24-2 24-3 24-4 24-4 24-4 24-5 24-6 25 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-1 26 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-1 27 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-1 28 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-1 III 1 Overview 1.1 Circuit Breaker (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) 1-1 Arc chute (page 24-5) Carrying handle Identification tags Motor disconnect switch (option) (page 13-3) Circuit breaker type label (page 2-1) Spring charge indicator (page 6-7) Mechanical "CLOSE" button Rated current value Racking pictogram Make-break operations counter (option) Spring charging lever (page 6-4) Racking handle Racking shaft Options label (page 2-1) Grounding terminal Position indicator (page 6-2) Table for ground-fault protection (page 9-13) Key lock for racking handle Mechanical release of racking handle (option) Trip unit (page 9-1) Rating plug "OPEN" button or "EMERGENCY OPEN" mushroom pushbutton (option) Ready-to-close indicator (page 6-7) Circuit breaker OPEN / CLOSED indicator (page 6-7) Tripped indicator (reset button) (page 6-9) Locking device "lock OPEN" (option) Front panel Secondary Disconnects 1.1 Cradle (with optional accessories) (14) (13) (12) (11) 0618-2 (10) (9) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (8) Arc chute cover (option) Hole for crane hook Arc vent openings Shutter (option) Locking device shutter (standard for shutters) Mutual mechanical circuit breaker interlocking (option) Locking provision for guide rail Door interlock (option) Locking device in OPEN position (option) Cradle mounted locking device against closing the circuit breaker in disconnect position (option) Shutter operating device Rejection feature Option-related coding Secondary disconnects 1-2 2 Labels 2.1 Circuit breaker frame type label (with terminal designations) Charging Motor Ready to Close Switch UVR Switch X5-1 (-) 240 VAC 1st Shunt Trip X6-13 (-) 240 VAC X9-1 (-) VAC X6-5 240 VAC X9-10 240 VAC X6-3 X6-11 X6-1 X6-9 240 VAC X5-2 (+) 250 VDC X6-14 (+) 250 VDC X9-2 (+) VDC X6-6 4A X9-11 3A X6-4 X6-12 X6-2 X6-10 5A Remote Close Coil 2nd Shunt Trip UVR Remote Reset 52a 1st Shunt Trip Switch 52a X6-7 (+) 120 VAC X5-11 (-) 120 VAC X8-13 (-) 120 VAC X9-7 240 VAC X5-5 X6-8 (-) 125 VDC X5-12 (+) 125 VDC X8-14 (+) 125 VDC X9-8 3A X5-6 Siemens Industry, Inc., Fort Worth, TX 76155 USA Assembled in USA 240 VAC , 1st Aux. SW. 52b 2nd Aux. SW. Bell Alarm X9-12 52b X5-9 X5-3 X5-10 X5-4 X9-14 X5-7 X5-8 10 A / 125 VDC , 0.5 A / 24 VDC , 3A X9-13 0131_nu_fw 2.2 Type label circuit breaker frame B A (1) (10) LISTED Molded Case Switch 11FZ 3-pole unit Amps Max. (2) Amps Max. 3000 A Volts Max 600 AC (3) Frequency 50/60 Hz (4) Volts Max 600 AC Frequency 50/60 Hz This switch is suitable for use on a circuit capable of delivering not more than Interrupting Rating , rms symm. 480 VAC (5) Max RMS Symmetrical 100 kA 600V 85 kA when protected by branch (6) Suitable for continous operation (7) at 100% of rating only if used in a minimum cubicle space Suitable for continous operation at 100% of rating only if used in a minimum cubicle space (Width) by 19,5 (Depth) inches. (Depth) inches. (9) 31910220089 Circuit breaker Non-automatic switch UL-Mark (for circuit switch applied by a white sticker, within the shown frame) Maximum rated current Rated operating voltages Rated frequency Rated short-circuit breaking capacity Necessary overcurrent protection Enclosure size Installation space Main connections Switch mark 0132_ul For Use With Bus Connection Only. ID-No. (Hight) by (8) cubicle, above arc chutes. 2-1 with the same ampere rating. 22 (Width) by 22,5 (Hight) by Use insulating liner on top of A B (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) circuit type fuses or Ckt. Bkr. ID-No. 0132-2_ul 480 V , rms symm. 600 VAC 2.3 Frame designation WLS2D316 (1) (1) (2) (3) (4) (5) (6) 2.4 (2) (3) (4) (5) (6) Type of circuit breaker Siemens interrupting class Frame size Draw-out or fixed mounted circuit breaker No. of poles Maximum rated continuous current Trip unit designation (1) (2) N450101000001 WLN., WLS., WLH., WLL., WLF., WLM. (4) (1) (2) (3) (4) 0132-01 (3) Type Catalog number Can be used in the following types of circuit breakers Regulatory approvals on a separate label 2-2 2.5 Rating plug label (1) (2) (3) (1) (2) (3) 2.6 Catalog number Rated current of the circuit breaker Regulatory approvals on a separate label Cradle type label (1) WLGL2320 (2) Continous Rating: 2000 A / 635 VAC R Circuit Breaker Adapter (3) For use with C.B. frames type: (4) WLL2A320/WLL2S320/WLL2D320/ WLL2Z320 Bz/Pos. 9344183 /20 ass.order 250000445789 (1 of 5) Q.C. 0130 (5) (1) (2) (3) (4) (5) Catalog number Rated current and rated insulation voltage of the cradle Seals of approval Circuit breakers that can be used with this cradle Siemens internal data A second type label is attached to the baseplate inside the cradle or on one of its side walls. 2-3 3 Standard specifications DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment/property damage. Turn off and lock out all power supplying this device before working on this device. Only qualified personnel should work on this equipment, after becoming thoroughly familiar with all warnings, safety notices, and maintenance procedures contained herein and on the devices. The successful and safe operation of this equipment is dependent on proper handling, installation, operation and maintenance. Qualified Personnel For the purpose of this instruction manual and these product labels, a "qualified person" is one who is familiar with the installation, construction and operation of the equipment and the hazards involved and who, in addition, has the following qualifications: a) Is trained and authorized to energize, de-energize, clear, ground and tag circuits and equipment in accordance with established safety practices. b) Is trained in the proper care and use of protective equipment in accordance with established safety practices. c) Is trained in rendering first aid. The circuit breakers are suited for operation in enclosed spaces not subject to operating conditions aggravated by dust, corrosive vapors or gases. Circuit breakers to be installed in dusty or damp locations must be appropriately enclosed. The circuit breaker frame and the trip units are in conformity with the standards: - UL 489 - NAVAL use according UL 489 Suppl. SB - CSA C22.2 No. 5-02 The cradles are in conformity with the standards: - UL 489 - CSA C22.2 No. 5-02 The accessories are in conformity with the standards: - UL 489 - CSA C22.2 No. 5-02 The molded case switches are in conformity with the standards: - UL 489 - CSA C22.2 No. 5-02 - 3-1 4 Packing and Lifting 4.1 Unpacking Unpack the circuit breaker and inspect it for damage. If the circuit breaker or cradle is to be installed at a later date: they may only be stored and redispatched in the original packing. NOTICE Equipment Damage. Placing the circuit breaker on its rear side may cause damage to the finger cluster assemblies. When handling circuit breakers, do not place them on their rear side. 4.2 Weights Weight Frame Size 4-1 Fixed-mounted circuit breaker Draw-out circuit breaker Cradle Circuit breaker + Cradle I 800 A / 1200 A 86 lb 137 lb 108 lb Only lift separately II 800 A / 1200 A 124 lb 159 lb 112 lb Only lift separately II 1600 A 124 lb 159 lb 112 lb Only lift separately II 2000 A 130 lb 177 lb 128 lb Only lift separately II 2500 A / 3000 A 141 lb 209 lb 152 lb Only lift separately II C-class 148 lb 220 lb 163 lb Only lift separately III 181 lb 260 lb 306 lb Only lift separately III C-class 200 lb 278 lb 306 lb Only lift separately 4.3 Lifting with a crane DANGER Heavy Equipment. Improper lifting will cause death, serious personal injury, or equipment/property damage. Never lift a circuit breaker or cradle above personnel. Follow instructions for use of lifting bar assembly. Use OSHA/NIOSH approved crane equipment and personal protection equipment for lifting/moving the circuit breakers and cradles. Cradle >3 ft Circuit Breaker max. 1/2" rope NOTICE Lifting a frame size III cradle with a breaker inside may result in distortion of the cradle. Remove the frame size III breaker from the cradle before lifting. 4-2 4.4 Lifting with a Lifting Bar Assembly DANGER Heavy Equipment. Improper lifting will cause death, serious personal injury, or equipment/property damage. Never lift a circuit breaker or cradle above personnel. Follow instructions for use of lifting bar assembly. Use OSHA/NIOSH approved crane equipment and personal protection equipment for lifting/moving the circuit breakers and cradles. 4.4.1 Lifting bar assembly (3-pole) (2) 0610_nu (1) (4) (1) (2) (3) (4) Locking position for circuit breaker in frame size II Locking position for circuit breaker in frame size III Receptacle for circuit breaker carrying handle FS II / III Receptacle for circuit breaker carrying handle NOTE Always lock the lifting bar assembly symmetrically on both sides. 4-3 (3) Lifting the circuit breaker 4 2 2 3 3 0614_1 1 0610-1_nu 4.4.2 Catalog No Lifting beam for circuit breaker and cradle WLLFT Portable hoist for use with the lifting beam WLHOIST 4-4 5 Installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. DANGER Heavy Equipment. Improper lifting will cause death, serious personal injury, or equipment/property damage. Never lift a circuit breaker, fuse carriage, or cradle above personnel. Follow instructions for use of lifting bar assembly. Use OSHA/NIOSH approved crane equipment and personal protection equipment for lifting/moving the circuit breakers and cradles. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. 5-1 5.1 Mounting 5.1.1 Mounting position WARNING Heavy Equipment Can cause serious personal injury. Use care when racking the breaker into the disconnect position. When a draw-out circuit breaker is mounted tilting toward the front side, it is possible that the circuit breaker may slide out on the rails. 30 30 30 30 5-2 5.1.2 Mounting on horizontal surface - Mounting tolerances The circuit breaker must be mounted on a rigid, level surface, capable of supporting the weight of the breaker, cradle, and associated busbar components. The maximum amount of offset in the mounting plane is 3/64" (1mm). Fixed-mounted breaker h max 3/64" (1mm) (1) (1) Mounting points Cradles for draw-out breaker 3/64" (1mm) 0139 NOTICE Damage to finger clusters. Improperly aligned bussing at the terminal connections may affect the position of the bus stabs. Misaligned bus stabs may result in damage to the finger clusters during circuit breaker rack-in. Do not distort the cradle terminal connections when connecting to the main bus. 5-3 (1) (2) (2) (1) (2) Fixed-mounted circuit breaker with 4 captive nuts for: FS I / II: bolts M8 + washers kit catalog no. WLMETRC FS III: bolts M10 + washers kit catalog no. WLMETRC3 Alternatively with bolts, washers and nuts: FS I / II: 5/16" / M8 FS III: 3/8" / M10 Cradle with 4 holes for: FS I: countersunk head screws M6 or 1/4" + belleville washer + nuts FS II / III: screws M8 or 5/16" + belleville washer + nuts 5-4 5.1.3 Cubicle and ventilation (1) (2) (3) (1) (2) (3) Upper ventilation opening Insulating liner use NEMA GPO-3, min. 0.094" thick or comparable material Lower ventilation opening Frame size I Frame rating (A) 800 1200 Minimal cubicle dimensions Interrupting Class S,H,L Insulating liner dimensions Width W1 (inch) Height H (inch) Depth D1 (inch) Width W2 (inch) Depth D2 (inch) 22 151) 19.5 18.5 10.5 Cubicle ventilation Top (square inch) Bottom (square inch) 800 1200 II 1600 2000 not required S, L, C 22 22.51) 19.5 18.5 10.5 2500 3000 4000 III 5000 4000 5000 32 22.52) 19.5 28.5 10.5 48 (2" by 24") 883) C 32 30 19.5 28.5 10.5 48 (2" by 24") 883) 2) Cubicle height given for use with insulating liner on cubicle top or cradle equipped with optional cover 5-5 551) L 1) Cubicle height given for use with insulating liner on cubicle top or cradle equipped with standard cover 3) Provided by cradle holes 55 5.1.3.1 Clearances / arcing space Generally: The installation space dimensions given on the type label ensure the necessary clearances to grounded metal surfaces up to 600 V AC according to UL 489. Additional guidelines for applications without compartmentalization as cubicles or for positioning of parts within the cubicle are given below. Clearances to live parts, grounded metallic parts and non-conductive parts must be maintained. The required minimum clearances are specified for rated voltages of 480 V AC and 600 V AC. In consideration for a ventilated switchboard: the minimum installation volume is calculated based on the specified height, width and depth, taking into consideration the power losses of ventilated switchgear. 5.1.3.2 Fixed-mounted circuit breaker (1) (1) (1) 1) A C X y1 y2 y3 Z1 Cubicle door Minimum clearance see (page 5-8) Minimum distance to the bus Installation clearance of the barrier Distance of the barriers Height of the barriers Height for pressure dissipation Width of the barriers 5-6 FS BG Dimensions for phase barriers made of insulating material1) (mm) Class y12) Operating voltage (V) 480 Z1 600 480 y22) C 600 480 600 480 S y32) X 600 480 600 100 480 60 125 I H 60 60 470 470 600 80 25 100 125 0 0 80 L 140 S 60 60 125 470 II L 100 100 C 60 60 L 60 60 300 470 470 470 710 710 120 100 25 150 not possible 60 150 25 100 150 125 0 0 0 300 60 80 150 150 300 300 150 150 400 400 100 140 III C 150 not possible 300 0 300 1) Valid with nominal cubicle width only FS I, II: 22" FS III: 32" 2) Measured from top surface of arc chutes FS BG Dimensions for dead metal barriers1) (mm) Class 4) y12) Z1 Operating voltage (V) 480 600 S 70 70 480 y22) C 600 480 600 480 X3) 600 480 600 16 16 16 16 16 16 100 125 I H 470 100 470 25 L S 140 100 100 II III 470 L 125 125 L 125 125 710 470 710 1) Valid with nominal cubicle width only FS I, II: 22" FS III: 32" 2) Measured from top surface of arc chutes 3) "16" is a measurement taken from the rounded protrusions on the rear of the housing 4) Class C with phase barriers made of insulating material only (page 5-5) 5-7 100 125 125 25 25 25 150 125 100 100 140 125 150 100 150 5.1.3.3 Draw-out circuit breaker Without arc chute cover A B C Minimum vertical clearance Minimum clearance on either side Minimum horizontal rear-side clearance Dimensions (mm) FS Class 3) A1) B u Operating voltage (V) 480 u2) v, c 600 480 C 600 480 u2) v, c 600 480 600 v, c 480 600 480 600 I S, H, L Consult Technical Support II S 150 300 100 100 20 50 10 10 14 14 10 10 II L 250 600 100 100 50 100 10 10 14 30 10 10 III L 250 500 100 100 50 100 10 10 14 14 10 10 1) Measured from top surface of arc chutes 2) Valid with unblocked arcing space on top only 3) Class C with phase barriers made of insulating material only (page 5-5) u v c Minimum clearance to live parts Minimum clearance to grounded metal parts Minimum clearance to non-conductive parts With arc chute cover Arc chute covers for draw-out cradles are options for every frame size. The gases are directed to the side outlets of the cradle. Openings to the outside provided on the sides of the cradle shall not be blocked. Ventilation openings on the upper rear ensure that no gas can escape upwards. 5-8 (2) (1) 1) 2) A B C Switchgear Arc chute cover Minimum vertical clearance Minimum clearance on either side Minimum rear-side clearance Dimensions (mm) FS BG Class 3) A1) B u Operating voltage (V) C u2) v, c 480 600 480 600 480 14 14 0 0 100 u2) v, c 600 v, c 480 600 480 600 480 600 10 10 14 14 0 0 10 10 14 14 0 0 10 10 14 14 0 0 S 100 I H L 225 S II 100 14 14 0 0 50 L III L 225 14 14 0 0 50 200 1) Measured from top surface of arc chutes 2) Openings in top of cradle side wall shall not be blocked, side clearance of 30 mm required. 3) Class C with phase barriers made of insulating material only (page 5-5) u v c Minimum clearance to live parts Minimum clearance to grounded metal parts Minimum clearance to non-conductive parts 5-9 5.2 Main terminal connections For main terminal dimensions of individual frame sizes, refer to: Frame sizes / dimension drawings (page 7-1) The main terminals and connectors are intended for busbar connection with NEMA hole patterns. The number and size of the busbars connected to the circuit breaker must be selected per UL 891 in order to meet the design and test requirements according to UL 891 depending on the rated current, defined by the rating plug. Different bussing in a given frame size may be applicable. 5.2.1 Cradle connections Drawout circuit breaker Connections to Line/Load side cradle connectors Frame Size Inmax Number of available busbars mounting positions Busbar cross-section I 800 A / 1200 A 1-3 4" x 1/4"1) 4 800 A / 1200 A / 1600 A 1-3 2000 A 2-4 4" x 1/4"1) 4 2500 A / 3000 A 3-5 4000 A / 5000 A 5-7 5" x 1/4"2) 6 II III Number of holes 1) The terminal permits the use of 2" x 1/4" busbars. 2) The terminal permits the use of 4" x 1/4" busbars. 5.2.2 Horizontal connections for fixed mount breakers NOTICE Equipment Damage. Cables which are connected directly to the horizontal bus terminals using cable terminals can damage the circuit breaker when short-circuit currents occur. Always connect mechanical cable lugs to front connected bus terminals ( Wire connectors (page 5-23)) or other type of properly braced bus. Fixed Mount circuit breaker Connections to Line/Load side horizontal terminals Frame Size Inmax Number of available busbars mounting positions Busbar cross-section I 800 A / 1200 A 1-4 3" x 1/4"1) 2 1-4 4" x 1/4"1) 3 2-6 5" x 1/4"2) 4 Number of holes 800 A / 1200 A / 1600 A II 2000 A 2500 A / 3000 A III 4000 A / 5000 A 1) The terminal permits the use of 2" x 1/4" busbars. 2) The terminal permits the use of 4" x 1/4" busbars. 5 - 10 5.2.3 Vertical connections for fixed mount circuit breakers Fixed mount circuit breaker Frame Size I II III Inmax Connection to Line/Load Side terminal with vertical connectors Number of busbars 800 A / 1200 A 1-3 800 A / 1600 A 1-3 2000 A 2-4 2500 A / 3000 A 3-5 4000 A / 5000 A 5-7 Busbar cross-section 2 4" x 1/4"1) 3 5" x 1/4"2) 4 3" x 1) The terminal permits the use of 2" x 1/4" busbars. 2) The terminal permits the use of 4" x 1/4" busbars. 5.2.3.1 Fitting fixed-mounted circuit breaker with vertical adapter DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Remove fixed-mounted circuit breaker 5 - 11 Number of holes 1/4"1) Frame size I NOTE 0714_nu The bus connectors are different for the three poles. Installation as shown below. (1) (2) 8 Nm 71 lb-in (3) (4) (5) (6) Size 10 mm (2) (3) 0715_nu 0716_nu 70 Nm 50 ft-lb (7) *) (1) (2) (3) (4) (5) (6) (7) Hex head screw M6x20 Threaded plate 2xM12 Vertical adapter Riser Socket head cap screw M12x90 Hex head screw M6x35 Socket head cap screw M12x50 *) Different offset 5 - 12 Frame size II 0524-0_nu Installing support for the lower contacts 1 Size 5 mm 0643-03_nu 6x Size 5 mm 2 3 6x 10 Nm 89 lb-in Attaching vertical adapter Construction Style A 2 Size 10 mm 4 0643-04_nu 1 3 5 - 13 70 Nm 50 ft-lb Construction Style B 2 4 1 0640-6 70 Nm 50 ft-lb 3 Alignment of vertical adapters NOTE Center the vertical adaptor of the center pole (phase B) on the copper connector of adapter and tighten it. Shift the vertical adaptors (7) of the outer poles (phase A & B) outwards until the specified distance of 5 1/4" is reached and tighten them. (1) (2) (2) (3) (7) (8) (1) (2) (2) (4) (4) (5) (8) (6) (1) (2) (3) (4) (5) (6) (7) (8) (6) 0640-7 0644_nu (1) 0645_nu (7) (1) Hex-head screw 800 A, 1200 A, 1600 A: M12 x 45, 2000 A: M12 x 55, 3000 A: M12 x 80, Belleville washer Threaded plate Washer 800 A, 1200 A, 1600 A, 2000 A: M12 nut 3000 A: threaded plate Support Vertical adapter Carriage bolt M12 with belleville washer and nut 5 - 14 Frame size III Attaching vertical adapter 2 1 0643-05_nu 4 Size 10 mm 70 Nm 50 ft-lb 3 Alignment of vertical adapters (1) (2) (3) (4) 0645-1 0647_nu (5) (1) (2) (3) (4) (5) 5 - 15 Hex-head screw M12 x 80 Belleville washer Washer M12 nut Vertical adapter 5.2.3.2 Catalog numbers Fixed-mounted circuit breaker vertical connectors Frame size Max. circuit breaker rated current I n max (A) Set for 3 phases, load and line I 800 /1200 WLH1R12CONUL 800 / 1200 / 1600 WLL2R16CONUL 2000 WLL2R20CONUL 2500 / 3000 WLL2R30CONUL II (Class C) 800 / 1200 / 1600 / 2000 / 2500 / 3000 WLC2R30CONUL III 4000 / 5000 WLC3R50CONUL II Set for 3 phases, load and line 5.2.4 Catalog No. Front connections 5.2.4.1 Bussing Fixed-mounted circuit breaker Line/Load Side Terminal Busbars with front connectors Frame Size Inmax Number of busbars Busbar cross-section Number of holes I 800 A / 1200 A 1-3 3" x 1/4" 4 800 A / 1200 A / 1600 A 1-3 2000 A 2-4 4" x 1/4" 4 2500 A / 3000 A 2-5 4000 A / 5000 A 5-7 5" x 1/4"1) 6 II III 1) Use of 4" x 1/4" busbars is possible. 5 - 16 5.2.4.2 Fitting fixed mounted circuit breaker with front connectors Frame size I 0717_nu (1) (2) (3) (1) (2) (3) Long connectors: line Short connectors: load Holes 13.5 mm Removing of 6 screws on lower ends of sensor covers (page 5-13). (1) (2) (3) (8) (7) (7) (4) 0718_nu (5) (6) (5) (8) (1) (2) (3) (4) (5) (6) (7) (8) 5 - 17 Spacer Socket head cap screw ISO 4762 M6x55 Carriage bolt M12x40 with belleville washer and nut Support Socket head cap screw ISO 4762 M6x60 with belleville washer Bracket with 2 captive nuts M6 Hex-head screws ISO 4017 M6x50 with belleville washers Socket head cap screw ISO 4762 M6x70 with belleville washer (5) Mounting (load side) 2 3 6 Size 5 mm 7 0725_nu 5 4 1 11 85 Nm 60 ft-lb 9 10 0726_nu 8 8 Nm 71 lb-in Size 5 mm 8 Nm 71 lb-in 5 - 18 Frame size II (1) 0719_nu (2) (3) (1) (2) (3) Long connectors: line Short connectors: load Holes 13.5 mm Removing of 6 screws on lower ends of sensor covers (page 5-13). (1) Size 5 mm (2) 8 Nm 71 lb-in (3) 85 Nm 60 ft-lb (4) 0720_nu Size 5 mm (5) 1600 A (1) (2) (3) (4) (5) 5 - 19 2000 A Short socket head cap screw ISO 4762 M6 with belleville washer Short spacer Carriage bolt M12 with belleville washer and nut Long socket head cap screw ISO 4762 M6 with belleville washer Long spacer 2500 A 8 Nm 71 lb-in 0720-1 Frame size II 3000 A 0721_nu Frame size III (1) Holes 14 mm 5 - 20 Mounting Frame size II 3000 A and Frame size III (1) (6) (5) (4) (3) 1 2 (2) Remove 6 screws from the lower side of the sensor covers (page 5-13). Locate the connectors on the breaker terminals and secure them with screws M12, nuts and belleville washers. Screw orientation: Nuts between terminals (facing each other). Do not tighten yet. Upper terminals 3 4 5 6 7 8 Assemble the steel bushings (3) with screws M6x75 (5) and belleville washers. Do not tighten yet. Push the connector against the steel bushings (3). Tighten the center screws M12 (2) to the specified torque (85 Nm / 60 ft-lb) Remove the steel bushings (3) and screws. Tighten the outer screws M12 (5) to the specified torque (85 Nm / 60 ft-lb) Assemble the steel bushings (3) and scews (5) again and tighten to the specified torque (8 Nm / 70 lb-in) Lower terminals 9 Assemble the support (6) to the connector using self-tapping screws M6x25 (1) and tighten to the specified torque (8 Nm / 70 lb-in). 10 Assemble screws M6 (4) with belleville washers. Do not tighten yet. 11 Push the connector and support against the circuit breaker housing. 12 Tighten the center screws M12 to the specified torque (85 Nm / 60 ft-lb). Tool access via the holes in the support. 13 Remove the M6 screws (4). 14 Tighten the outer screws M12 to the specified torque (85 Nm / 60 ft-lb). Tool access via the holes in the support. 15 Mount the M6 screws (4) again and tighten to the specified torque (8 Nm / 70 lb-in). NOTE Store or pack the frame on a pedestal of about 2" height, to protect the extending lower ends of the load connectors from being damaged. 5 - 21 (1) Size 5 mm (2) 8 Nm 71 lb-in (3) 85 Nm 60 ft-lb (4) 0722_nu (5) (1) (2) (3) (4) (5) (6) (6) Spacer Socket head cap screw ISO 4762 M6x75 with belleville washer Socket head cap screw ISO 4762 M12x90 with belleville washer and nut Support Socket head cap screw ISO 4762 M6x85 with belleville washer Taptite screw DIN 7500 - EE - M6x25 5.2.4.3 Catalog numbers Front connectors Set for 3 phases, load and line Frame size Max. circuit breaker rated current I n max (A) I S, H, L 800 /1200 WLH1F12CONUL 800 / 1200 / 1600 WLL2F16CONUL 2000 WLL2F20CONUL 2500 WLL2F25CONUL 3000 WLL2F30CONUL 4000 / 5000 WLL3F50CONUL II S,L Set for 3 phases, load and line III L Catalog No. 5 - 22 5.2.5 Wire connectors Wire connectors allow cables to be connected directly to the front connections of the circuit breaker. NOTICE Equipment Damage. Short-circuit currents greater than 65 kA may cause damage to wire connectors or connected cables. 0705_nu The use of wire connectors in switchgear with short-circuit currents greater than 65 kA is not permitted. Wire connectors are tested according to UL 486A-486B with flexible standard cables. 5.2.5.1 Cabling Frame size Rated current No. of cables per connector I 800 A / 1200 A 1-4 6 - 350 kcmil Cu / Al 325 lb-in 36 Nm 1200 A 1-4 6 - 350 kcmil Cu / Al 325 lb-in 36 Nm 1600 A 1-6 300 - 600 kcmil Cu / Al 375 lb-in 42 Nm 2000 A 1-6 250 - 600 kcmil Cu 375 lb-in 42 Nm II 5 - 23 Connector wire range Torque 5.2.5.2 Mounting DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. 1 2 3 Attach the front connectors. Attach power cables to wire connectors and tighten cable set screws to a torque given below. Mount pressure wire connectors to the front connectors with mounting bolts, belleville washers and nuts and tighten to a torque given below. A B (1) (1) 36 Nm 25 ft-lb (2) (3) 42 Nm 30 ft-lb Size 6 mm Size 10 mm 20 Nm 14 ft-lb 0723_nu 0724_nu 70 Nm 50 ft-lb A B FS I and FS II, 1200 A FS II, 1600 A and 2000 A (1) (2) (3) Wire main connector 4x Socket head cap screws ISO 4762-M12x35 or 1/2" x 1 1/4" with belleville washer and nut 2x Socket head cap screws ISO 4762-M8x50 or 3/8" x 2" with belleville washer and nut 5.2.5.3 Catalog numbers Frame size Max. circuit breaker rated current I n max (A) Catalog No. I / II 800 / 1200 / 1600 WLS2P12CONUL II 1600 / 2000 WLS2P20CONUL 5 - 24 5.3 Connecting the main conductors Clean the main conductor connection (plated busbars) 0058_u Securing line and load-side busbars Use grade 5 bolts 1/2" and Belleville washers. Tighten to a torque of 70 Nm / 50 lb-ft. 5 - 25 5.4 Secondary wiring Terminal assignment (page 8-1) Cross-sections Connection type 1x Strip conductors Screw clamp terminal (SIGUT system) 7 mm 20 -14 AWG1) 0.5 - 2.5 mm2 1) 20 -14 AWG 1) 0.5 - 1.5 mm2 1) 20 -14 AWG 1) 0.5 - 2.5 mm2 1) 20 -14 AWG 2) 0.5 - 2.5 mm2 2) 1/4" Spring clamp terminal 7 mm 2x 1/4" 14 - 16 AWG Recommendation: AMP, PIDG series Catalog No. 50881 Ring terminal system 10 AWG Recommendation: Siemens part Catalog No. WL10RL 1) Use of wire end ferrules (crimp style) is possible 1 x up to14 AWG tube-type without insulating sleeve 1 x up to 16 AWG tube-type with insulating sleeve 2 x up to 16 AWG tube-type with insulating sleeve, twin wire end ferrule 2) 2 x up to 14 AWG tube-type without insulating sleeve 2 x up to 16 AWG tube-type with insulating sleeve 5 - 26 5.4.1 Breaker Secondary Disconnect Arrangement (1) (2) X9 (1) (2) X8 COM15 COM16 X6 X5 Arc chute Secondary disconnect block Field installation 1 2 (1) 3 (2) 0173-06 4 (1) (2) Dummy block Secondary disconnect block TX 8 (3) or 0173-09 5 6 PH 1 0,7 Nm 6 lb-in (3) 5 - 27 Secondary disconnect adapter block for high arc chutes. Connecting secondary wiring Spring clamp terminal 3,0 x 0,6 1/8" 5.4.2 Cradle Secondary Disconnect Block Field installation (1) (2) 2 1 (1) (2) Cradle with sliding contact modules Secondary disconnect blocks Disassembly (1) 2 1 (1) Secondary disconnect block 5 - 28 For the screw clamp terminal, a low profile, one-piece, sliding disconnect module is also available. 3,0 x 0,6 5.4.3 0769 0,5 Nm 4 lb-in Secondary disconnect terminal blocks Versions (1) (2) PH 1 3,0 x 0,6 1/8" 0,5 Nm 4 lb-in 0,5 Nm 4 lb-in (3) (4) (1) (2) (3) (4) Screw clamp terminal system Ring terminal system Insulated ring terminal Screws ANSI B 18.6.3 #4 (5) 3,0 x 0,6 1/8" (5) 5 - 29 Spring clamp terminal system 2 terminals per contact Mounting of guide tongues (fixed-mounted circuit breakers only) (1) (2) (1) (2) Back side of secondary disconnect block Guide tongues Coding secondary disconnect blocks (fixed-mounted circuit breakers only) 3 2 X5 1 X6. (1) X5 X6. X5 X6. (2) click (3) 0100-01_nu (4) (1) (2) (3) (4) Male pin: groove Female socket: guide Module designation (here X5, must be visible from the front) Module X5 5 - 30 Attaching the secondary disconnect blocks (1) 1 2 (2) (1) (2) 5.4.4 Secondary disconnect blocks Fixed-mounted circuit breaker: Breaker secondary disconnect block Draw-out circuit breaker: Cradle secondary disconnect block Wiring in cradle NOTICE Impermissable area for wires: Damage to wires in this area. (1) (2) (4) 0106-01_nu (3) (1) (2) (3) (4) Arcing space*) Arcing openings Interlockings Carrying handle *) If arc chute covers are available, the wires of the secondary disconnect blocks must not be laid on these covers. 5 - 31 5.4.5 Catalog numbers Catalog No. Circuit breakers secondary disconnect block Secondary disconnect extension (FS III & FS II class C only) WLCNMD WLCNMDA Screw clamp terminal (SIGUT) system WLGAUXPLUGP Spring clamp terminal WLGAUXPLUGT Ring terminal system WLGAUXPLUGR Coding set WLCODEKITUL Blanking cover WLGDAUXPLUG Ring terminal crimp lug for AWG 10 wire Cradle secondary disconnect block with integrated low profile screw clamp terminal block WL10RL WLGAUXPLUGL 5 - 32 6 Commissioning 6.1 Preparation of draw-out circuit breaker NOTE On FS I circuit breakers, the racking handle is located in an upright position on the right side, but is operated in the same manner. 6.1.1 Inserting the circuit breaker into the cradle NOTE Remove padlocks from the shutter and place the locking device in the stowed position (page 15-18). Check circuit breaker position indicator/ Draw out guide rails 1 2 green 1) The circuit breaker can only be pushed in when the indicator displays "DISCON". 2) Pull out guide rails to the end-stop. Place the circuit breaker into the guide rails and push it into the cradle up to the disconnected position. Close cubicle door. 3 4 5 4 6-1 4 6.1.2 Positions of the circuit breaker in the cradle Diagram Positon indicator (1) Primary Circuit Secondary Circuit Cubicle Door Shutter disconnected disconnected open closed disconnected disconnected closed closed disconnected connected closed closed connected connected closed open (2) Withdrawn position (4) green (3) Disconnected position green Test position blue red Connected position (5) (6) (7) (8) Secondary circuit Primary circuit Cubicle door Shutter 6-2 6.1.3 Unlocking the racking handle / withdrawing the racking handle 4 Hold 1 2 3 5 1 2 3 4 5 6.1.4 OPEN circuit breaker Push the crank inwards Pull out the handle Lift and hold the control lever Pull out the crank Racking circuit breaker into connected position Stop red Position indicator blue green 6.1.5 Inserting racking handle 2 1 3 NOTICE Racking Handle Damage. Turning the racking handle beyond the stop will cause damage to the racking mechanism. When the stop is reached, rotate the racking handle counter-clockwise until it can be pushed inwards. 6-3 4 6.2 Charge the closing spring Charging manually WARNING Heavy equipment May result in serious injury and/or property damage. Secure the circuit breaker before charging it manually (e.g. during service on the work bench). F 9x 0727 (1) 1 F n Handle force Number of strokes (1) Spring charged 2 3 4 5 6 7 8 9 10 n NOTE To charge the spring mechanism, grip the handle firmly and carry out each stroke evenly, moving the lever down as far as it will go. Despite a significant increase in the required actuating force, the lever must be moved as far in the ninth stroke as in the first eight. When the closing spring is fully charged, the lever can be moved without resistance. 6-4 Condition after 9 strokes: (2) (1) 0063-1 (1) (2) 0063-2 incomplete stroke, repeat stroke completely completely charged Charging with a motor-operated mechanism The motor-operated mechanism starts automatically when the control voltage is applied. The motor switches off automatically when the charging process is completed. The motor will re-engage immediately following spring discharge (closing operation). Installing the motor operator (page 13-1) 6-5 6.3 Check list for commissioning DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. q Action required Verify the circuit breaker is OPEN Verify the rating plug is installed Rating plug (page 9-44) Verify the TRIP indicator is reset Set the trip unit to appropriate values Trip units (page 9-1) Apply secondary and control voltages Close the cubicle door Rack circuit breaker into connected position Push in the racking handle Charge closing spring Ensure the following conditions exist Undervoltage release energized Shunt trip(s) not energized Electrical closing lockout (page 8-4) not energized Electrical interlocking of closing coil in the switch board control wiring disabled Locking devices not activated Indicators 6-6 6.4 Closing the circuit breaker Indicators CLOSE button Remote activation or Indicators Without motor-operated mechanism With motor-operated mechanism after 10 seconds (The closing spring will be recharged by the motor-operated mechanism immediately after the circuit breaker has closed) 6.5 Opening the circuit breaker OPEN button Remote activation or Indicators Without motor-operated mechanism With motor-operated mechanism NOTE The minimum time interval between ON- and OFF-signal of the Low-Voltage Power Circuit Breakers 3WL shall not be shorter than 100 ms. 6-7 6.6 Tripping Trip unit Tripped by Bell Alarm (tripped) indicator S24* Bell Alarm X9.12 X9.14 X9.13 Indicators Without motor-operated mechanism Breaker indicators With motor-operated mechanism * The breaker is untripped, and the Bell Alarm is shown reset 6-8 6.7 Reclosing a circuit breaker tripped by the trip unit NOTE The reason for tripping can be displayed using the "QUERY" button on the trip unit. This is stored for at least two days, provided that the trip unit was activated for at least 10 minutes before tripping. 1 Find reason for tripping 2 Indicator Overload in main conductor - Check downstream load - Check trip unit settings Overload in neutral conductor Short circuit: short-time-delay trip Short circuit: instantaneous trip - Inspect switchgear - Check downstream load 3 Find and remedy cause 4 Inspect circuit breaker 5 Clear trip cause 6-9 Inspect contact system for possible damage Maintenance (page 24-1) Ground fault trip With mechanical reclosing lockout (optional) 6 Reset Bell Alarm Electric remote reset of Bell Alarm (page 10-5) (optional) Manual reset of reclosing lockout, Bell Alarm and tripped indicator (page 10-2) Without motor-operated mechanism 7 Indicators With motor-operated mechanism Charge the closing spring (page 6-4) Closing the circuit breaker (page 6-7) 6 - 10 6.8 Removing from service Fixed-mounted circuit breaker Draw-out circuit breaker 1 OPEN the circuit breaker Secondary circuit 2 Disconnect secondary circuits Position indicator green 3 Depress the CLOSE button 4 Depress the OPEN button 5 Indicators 6 - 11 6.9 Troubleshooting Fixed- `mounted breaker Draw-out circuit breaker Disturbance Possible cause(s) Remedy Circuit breaker cannot be closed. Circuit breaker not ready to close. 1. Closing spring not charged Charge closing spring 2. Undervoltage release not energized. Energize undervoltage release X X X X X X 3. Electrical closing interlock effective Switch off control voltage for interlocking X X 4. Key lock engaged (optional accessory) Unlock X X X X 6. "EMERGENCY OPEN" button engaged in operating position (accessories) Release "EMERGENCY OPEN" button by rotating it X X 7. Lockout effective against closing when cubicle door is open (accessories) Close cubicle door X X 8. Electronic trip unit missing or incorrectly installed Install electronic trip unit properly X X Ready-to-close indicator shows: 5. Padlocks installed 9. Shunt trip energized X X X De-energize shunt trip 10. Racking handle withdrawn Rack circuit breaker into disconnected, test or connected position, unlatch crank and push it fully in 11. Closing coil energized Closing coil has to be deenergized shortly for reclosing 12. Mutual mechanical circuit breaker interlocks effective (accessories) Open second circuit breaker or rack into disconnected position X X Remove padlocks 6 - 12 Fixed-mounted breaker Draw-out circuit breaker X X Disturbance Possible cause(s) Remedy Circuit breaker cannot be closed. Circuit breaker ready to close. Ready-to-close indicator: 1. Closing coil not energized or incorrectly energized Check or apply correct voltage 2. The secondary disconnects have been removed Plug in the secondary disconnects 1. Racking mechanism of circuit breaker not in disconnected (DISCON) position (Check circuit breaker position indicator) Rack the mechanism into disconnected position (green position indicator) 1. Factory mounted coding of circuit breaker and cradle does not match. The circuit breaker is not rated for use in this cradle. Replace with the proper circuit breaker (permissible circuit breakers are listed on the cradle type label). 2. Not a fault (functional property) Continue racking 1. Circuit breaker is closed Press "OPEN" button and pull racking handle block out 2. Cubicle door not completely closed (Locking device as accessory) Close cubicle door 1. Racking handle is interlocked Rack circuit breaker into disconnected, test or connected position, unlatch crank and push it fully in 1. Closed circuit breaker is preventing opening of cubicle door Open the circuit breaker 2. Circuit breaker in connected position Rack circuit breaker into test or disconnected position X X Circuit breaker cannot be moved from the withdrawn position into the disconnected position Circuit breaker cannot be fitted in the guide rails X X When racking from the disconnected into the test position, the circuit breaker does not move during the first 6 rotations (approximately) X Racking handle cannot be drawn out X X X Cubicle door cannot be opened (door interlock as accessory) X 6 - 13 Racking handle cannot be pushed in 7 Frame sizes / dimension drawings 7.1 Frame size I, fixed-mounted version 0732_nu fixed-mounted circuit breaker 7-1 Horizontal connectors 0733_nu top view 7-2 Rear vertical connectors top view 0734_nu rear view 7-3 Front connectors top view 0736_nu front view 7-4 Front connectors and pressure wire terminals top view 0737_nu front view 7-5 0494-3_nu 7.2 7-6 Frame size II, fixed-mounted version top view Class C always 0494-5_nu rear view 7-7 LH side view 0738_nu 2500 7-8 front view 7.3 Frame size II, 3000 A 5.12 1.75 1.75 [ 44,45 1.75 21.09 22.35 [ 44,45 [ 535,8 [ 567,6 [ 44,45 ] ] ] 0.55 [ 14,0 0.26 [ 6,65 ] (3x each pole) 0.25 [ 6,4 ] (4x each pole) [ 130,0 5.12 ] [ 130,0 ] ] ] ] 1.63 M8 [ 41,3 ] 4.64 1.00 1.75 [ 25,4 ] [ 44,45 [ 117,8 ] ] 8.89 [ 225,7 ] 5.91 [ 150,0 ] 7-9 7.4 Frame size III, fixed-mounted version 0495-1_nu LH side view 7 - 10 0495-2_nu top view top view 7 - 11 top view 0495-3_nu rear view 7 - 12 LH side view 1.75 1.75 [ 44,45 ] [ 44,45 ] 0.55 1.75 21.09 22.35 [ 14,0 ] [ 44,5 ] [ 535,8 ] [ 567,6 ] M8 1.00 1.63 [ 41,3 ] 4.64 [ 25,4 ] [ 117,9 ] 1.75 [ 44,45 ] 8.89 5.91 [ 225,8 ] [ 150,0 ] front view 8.27 0.25 [ 210,0 ] 8.27 [ 210,0 ] [ 6,65 ] (5x each pole) [ 6,35 ] (6x each pole) 0739-1 0.26 7 - 13 7.5 Door cut-outs, fixed-mounted circuit breaker 0735_nu Frame size I 7 - 14 0496_nu Frame size II / III 7 - 15 Frame size I, draw-out version 0745_nu 7.6 7 - 16 rear view 0746_nu top view 7 - 17 0747_nu bottom view 7 - 18 7 - 19 0748_nu 7 - 20 0749_nu Frame size II, draw-out version 0490-1_ul 7.7 7 - 21 2500/3000A 2000A 800/1200/1600A 5.25 [133.3] 5.25 [133.3] 0.25 [6.3] 5.25 [133.3] 5.25 [133.3] 5.75 [146.1] 5.25 [133.3] 0.25 [6.4] 5.25 [133.3] 5.25 [133.3] 0.25 [6.3] 0.25 [6.4] 0.25 [6.4] 5.25 [133.3] 0.25 [6.3] 0.25 [6.3] 1.75 [44.5] 0.53 [ 13.5] 4.00 [101.6] 7.37 [187.3] 10.38 [263.6] 0.75 [19.0] 9.25 [235.0] 1.75 [44.5] 5.18 [131.6] 2.88 [73.1] 1.75 [44.5] 0490-2_nu 3.74 [95.0] 5.25 [133.3] 5.25 [133.3] 2.31 [58.7] 6.97 [177.1] 7 - 22 18.62 [473.0] HORIZONTAL MAIN VERTICAL MAIN BUS CONNECTORS BUS CONNECTORS 1.75 [44.5] 1.75 [44.5] 5.25 [133.3] 1.75 [44.5] 5.25 [133.3] 5.25 [133.3] 5.25 [133.3] 1.75 [44.5] 0.50 [12.7] 0.75 [19.0] HORIZONTAL MAIN VERTICAL MAIN BUS CONNECTORS BUS CONNECTORS 1.75 [44.5] O0.53 [O13.5] 4.00 [101.6] 0.50 [12.7] 7.5 [190.5] 10.38 [263.6] 0.75 [19.0] 9.25 [235.0] 1.75 [44.5] 0490-3_nu 3.75 [95.2] 3.75 [95.3] 0.50 [12.7] 2.88 [73.1] 1.75 [44.5] 6.97 [177.1] 5.25 [133.3] 5.25 [133.3] 2.31 [58.7] 18.62 [473.0] 6.97 [177.1] NOTE: ROTATABLE MAIN BUS CONNECTORS ARE ONLY AVAILABLE UNDER THE FOLLOWING CONDITIONS: (1) ONLY ACCETABLE FOR FS II 800A-2000A FRAME SIZES (2) ONLY ACCETABLE FOR SHORT CIRCUIT RATINGS OF 85KAIC OR LESS 7 - 23 Lifting Point (Cradle only) Do not lift by other points. Lifting Point (Cradle and Breaker) Do not lift by other points. 0.75 [19.0] 0490-4_ul 19.13 Closed door racking [486.0] 7 - 24 6.43 [163.4] Minimum free space for breaker racking 15.7 Withdrawn position [398] 34.80 [884] 7.8 Frame size III, draw-out version 7 - 25 7 - 26 7 - 27 7.9 Door cut-outs for draw-out circuit breakers 0750_nu Frame size I 7 - 28 7.10 Frame size II / III Door cut-out (with edge protector) R0.39 (Max. radii, 4 plc's) [R10.0] 13.38 [339.9] 2.74 [69.5] 1.40 [35.5] O1.42 [O36.0] 0.83 [21.1] 4.45 [113.0] 5.71 [144.9] 11.41 [289.9] Minimal door cut-out (Only center escutcheon visible) Door cut-out (Middle escutcheon visible) R0.08 [R2.0] (Max. radii, 4 plc's) R0.08 [R2.0] (Max. radii, 4 plc's) 10.98 [278.9] 10.98 [279] 4.78 [121.5] 5.19 [131.9] 4.78 [121.5] 1.93 [49.0] 10.39 [263.9] 5.63 [143] 7 - 29 7.11 External sensor for neutral conductor WLNCT2 7 - 30 WLNCT3 7 - 31 Iron Core: WLG800NMCT23, WLG1200NMCT23, WLG1600NMCT23, WLG2000NMCT23, WLG2500NMCT23, WLG3000NMCT23, WLG3200NMCT23, WLG4000NMCT23, WLG5000NMCT23, WLG6000NMCT23, WLGNMDGCT23 7.12 Further dimension drawings - Door sealing frame (page 22-1) - Shrouding cover (page 23-2) Additional information on: Cut-outs for "through-door racking" with Door sealing frame (page 22-1) is given in Chapter 22. Cut-outs for attaching the Plexiglas cover are shown in Chapter 23. 7 - 32 8 Circuit diagrams 8.1 Terminal assignment Internal Terminals ANSI C37.2 device # External X9 Bell Alarm S24 Signalling switch for 2nd shunt trip Signaling switch for remote tripping Open Fuse Indication S26 Open Fuse Lockout Device (FS III Only) OFLO 2nd shunt trip F2 TC 14 13 12 11 10 9 8 7 6 5 4 3 2 1 30 52CS 52CC LT / (+) Control power 52CS X9.4 Fuse carriage FS III X9.3 52TC LT / (+) N / (-) Control power X8 Remote reset Bell Alarm & tripped indicator F7 BA External Iron Core Ground Fault Sensor S2 External Iron Core Ground Fault Sensor S1 External Air Core Neutral Sensor S2 External Air Core Neutral Sensor S1 External voltage transformer Com External voltage transformer L3 External voltage transformer L2 External voltage transformer L1 0 V DC 24 V DC CUB + CUB - 14 13 12 11 10 9 8 7 6 5 4 3 2 1 79 LT / (+) N / (-) Control power Short terminals, if no Neutral sensor Phase A Phase B Phase C 24 V DC Input Terminating resistor, 120 , 0.5 W if no external CubicleBUS module is connected X7 COM15/16, otherwise empty X6 1st Shunt Trip. TC S1 a S1 b CC Closing Coil CC "Ready to close" signal S20 S2 a S2 b 14 13 12 11 10 9 8 7 6 5 4 3 2 1 52TC / 86 LT / (+) N / (-) Control power 52a 52b 52CC N / (-) LT / (+) Control power 52LC 52a 52b X5 F4 only "quick OPEN" 0053-07_nu 2nd auxiliary release: F3 "UVR", F4 "UVR td" Optional motor disconnect switch S3 a S3 b S4 a S4 b 14 13 12 11 10 9 8 7 6 5 4 3 2 1 62 27 EMERGENCY OPEN or short terminals LT / (+) Control power N / (-) 52a 52b 52a 52b 52M LT / (+) N / (-) Control power 8-1 8.2 Auxiliary switches X5.8 X5.10 X5.4 X5.6 X5-8 X5-10 X5-4 X5-6 3 X6.4 1 X6.2 Wire no. X6-2 S4 S3, S4 Optional additional auxiliary switches X6-4 S3 X6.12 S2 X6-12 S1 X6.10 Terminals X6-10 S1, S2 Optional auxiliary switches 1 3 1 3 1 3 Internal Signaling switches 8-2 a 4 2 4 X5-7 X5-9 X5-3 X5-5 X5.9 X5.3 X5.5 X6.11 a X5.7 X6-11 Terminals b S4 X6-1 Wire no. a X6-3 2 b S3 X6.1 4 a X6.3 2 X6-9 b S2 X6.9 0136-01_u b S1 2 4 S22 S20 TC/UVR S23 S24 sw / blk sw / blk sw / blk COM COM COM Terminals X9.11 X9.13 color Wire no. X9.7 1 X6-5 F1 NC Reset X6.5 1 "Reset" bl / blue 4 TC 1 0136-02-01_u X9.14 NO bn or gr 4 Internal "Trip" X9.10 4 NO color X6-6 Wire no. bl / blue X6.6 Terminals X9.12 S23 *) X9.8 S20 NO S22 bl / blue S24 *) Same installation location as S43 1) Contact closed means that the undervoltage release is energized or shunt trip is not energized - circuit breaker is possibly "ready to close". Contact open means that the undervoltage release is not energized or shunt trip is energized - circuit breaker is not "ready to close". 8-3 8.3 Shunt Trip, Undervoltage Trip / Electrical closing lockout L F1 F2, F3, F4 **) TC TC UVR UVRD a 1) a *) EMERGENCY OPEN or short terminals **) Same installation location 1) For circuit breaker equipped with shunt trip and closing coil, the combined cutoff- switch S14 / S15 will be used. (One switch NO + NC is serving both solenoids.) 8-4 8.4 Closing Coil / Electrical CLOSE CC 2) CC S10 *) CC b 1) *) Same installation location as S12 1) For circuit breaker equipped with shunt trip and closing coil, the combined cutoff- switch S14 / S15 will be used. (One switch NO + NC is serving both solenoids.) 2) Use twin wire end ferrule Crimping tool e.g.: Weidmuller PZ3 to PZ6, WAGO Variocrimp 4 8-5 8.5 Motor-operated mechanism S12 *) M 24 - 30 V DC 48 - 60 V DC X5.2 X5.1 _u L+ L- *) Same installation location as S10 8.6 Remote Bell Alarm Reset F7 S13 _u BA 8-6 8.7 Trip unit circuitry for ETU745-776 8.7.1 With Breaker Status Sensor (BSS) and metering module External Iron Core Sensor Input External Air Core Sensor Input _u *) 1) 2) Terminating resistor 120 0.5 W on X8-1 / X8-2, if no external c module If no metering module and no BSS module is used: Direct connection X8 to ETU - BSS module: Breaker Status Sensor - c: Bus system for interconnection of circuit breaker components and connection to the fieldbus: PROFIBUS-DP with COM15 MODBUS with COM16 - ETU: Trip Unit - S40 signaling switch "ready-to-close" - S41 signaling switch for spring charge level - S43 signaling switch 2nd shunt trip F3 or F4 - S44 signaling switch for main contacts OPEN / CLOSE position - S45 Bell Alarm signaling switch S43 *) S45 S40 *) same installation location as S23 F5 S44 S41 ETU 8-7 8.7.2 Metering module only External Air Core Sensor Input _u External Iron Core Sensor Input 1) Terminating resistor 120 0.5 W on X8-1 / X8-2, if no external c module 8-8 8.7.3 Breaker Status Sensor (BSS) only L External Air Core Sensor Input _u External Iron Core Sensor Input 1) Terminating resistor 120 0,5 W on X8-1 / X8-2, if no external c module 8-9 9 Electronic components 9.1 Trip units 9.1.1 Overview of function Trip Units Functions ETU745 (9-2) ETU748 (9-6) ETU776 (9-8) Basic protective functions (page 9-12) Overload protection (L-tripping) q q q Short-time-delayed short-circuit protection (S-tripping) q q q Instantaneous short-circuit protection (I-tripping) q q 1) q Neutral conductor protection (N-tripping) q q q ground-fault tripping o o o Load monitoring q q q Leading signal for "L-tripping" q q q Thermal memory can be switched on/off q q q Zone selective interlocking o o o Neutral conductor protection can be switched on/off q q q Short-time delayed short-circuit protection can be switched on/off q q q Instantaneous short-circuit protection can be switched on/off q - q Short-time delayed short-circuit protection switchable to I2t q q q Overload protection switchable to I4t q q q Changeable parameter sets - - q Ground-fault protection to I2t o o o Ground-fault alarm o o o Alphanumeric display o o - Graphical display (fixed-mounted) - - q Communication via c q q q Communication via PROFIBUS-DP o o o Communication via MODBUS o o o Communication via Ethernet o o o o o o Parameterization via rotary coding switches q q - Parameterization via communication (absolute values) - - q Parameterization via menu (absolute values) - - q Remote parameterization of basic protective functions - - q Remote parameterization of additional functions q q q q q q Additional functions (page 9-14) Display (page 9-18) Communication Metering function (page 9-73) Metering function PLUS Parameterization Other Option for connecting to an external 24 V DC power supply qstandard ooptional -not available 1fixed 9-1 9.1.2 Trip unit ETU745 Overview Mechanical RESET for Bell Alarm and remote trip Option: Reset Lockout prevents accidental resetting of the lock-out mechanism after a trip Scroll up Option: Alphanumeric display Trip unit activated Indications Scroll down Trip unit error indicator Overcurrent alarm Thermal memory On/Off COMMUNICATIONS Neutral conductor protection On/Off EXTENDED Neutral conductor overload setting Rating plug Overload trip curve mode I2t / I4t Rotary coding switch long-time delay pickup setting Rotary coding switch long-time delay setting Rotary coding switch short-time delay setting Rotary coding switch short-time delay pickup setting Trip cause indicator 1) Sealing eyelet Rotary coding switch instantaneous pickup setting Option: Ground-fault module Changeover switch ground-fault detection mode 2) Ground-fault alarm Indications Rotary coding switch ground-fault pickup setting Ground-fault tripped Rotary coding switch ground-fault time delay setting tg / I2tg Rotary coding switch ground-fault alarm setting Clear button Test button Test connector Query button 1) The trip cause is stored internally for at least two days if the trip unit has been activated for at least 10 min before tripping (for unlimited time with auxiliary power). 2) Changeover switch only accessible with removed module. NOTICE Electrostatic Discharge Trip unit may become inoperative. Before the protective cover is removed, ensure that the equipment to be connected, and also the operating personnel, are at the same potential. 9-2 Overcurrent protection settings NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. The parameters for the basic functions are adjusted with rotary coding switches. The value 0.1 is set if the rotary switch is positioned in this zone 3 x 0.5 1/8" Various additional functions are adjusted with slide switches. The settings for the additional function "load monitoring" can be adjusted via: - the alphanumeric display (page 9-18) the BDA (page 9-94) the PROFIBUS-DP the MODBUS These settings can only be adjusted if the trip unit is activated, i.e. it must be connected to an external 24 V DC voltage supply (UL Listed Class 2). Protective functions Overload protection - L-tripping (page 9-12) Short-time delayed short-circuit tripping - S-tripping (page 9-12) Instantaneous short-circuit tripping - I-tripping (page 9-13) Ground-fault tripping - G-tripping (page 9-13) Neutral conductor protection - N-tripping (page 9-14) Load monitoring (load restore / load shedding) (page 9-14) Leading signal for L-tripping (page 9-14) Thermal memory can be switched On/Off (page 9-15) Ground-fault protection modules (page 9-45) 9-3 Characteristics The ranges shown in the following are only setting ranges of the respective parameters. Possible tolerance ranges are not included here. Tolerance ranges are shown in the Easy TCC Time Current Curve Software. The characteristics apply to the circuit breaker version H-class, 480 V, frame size II, with ground-fault protection module. L-tripping S-tripping 9-4 I-tripping Ground-fault tripping 9-5 9.1.3 Trip unit ETU748 Overview Mechanical RESET for Bell Alarm and remote trip Option: Reset Lockout prevents accidental resetting of the lockout mechanism after a trip Scroll up Option: Alphanumeric display Trip unit activated Indicators Scroll down Trip unit error indicator Overcurrent alarm Thermal memory On/Off COMMUNICATIONS Neutral conductor protection On/Off EXTENDED Neutral conductor overload setting Rating plug Overload trip curve mode I2t / I4t Rotary coding switch long-time delay pickup setting Rotary coding switch long-time delay setting Rotary coding switch short-time delay setting Rotary coding switch short-time delay pickup setting Trip cause indicator 1) Sealing eyelet Option: Ground-fault module Changeover switch ground-fault detection mode 2) Ground-fault alarm Indications Rotary coding switch ground-fault pickup setting Ground-fault tripped Rotary coding switch ground-fault time delay setting tg / I2tg Rotary coding switch ground-fault alarm setting CLEAR button Test button Test connector Query button 1) The trip cause is stored internally for at least two days if the trip unit has been activated for at least 10 min before tripping (for unlimited time with auxiliary power). 2) The switch is only accessible when the breaker front cover is removed. NOTICE Electrostatic Discharge Trip unit may become inoperative. Before the protective cover is removed, ensure that the equipment to be connected, and also the operating personnel, are at the same potential. 9-6 Overcurrent protection settings NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. The parameters for the basic functions are adjusted with rotary coding switches. The value 0.1 is set if the rotary switch is positioned in this zone 3 x 0.5 1/8" Various additional functions are adjusted with slide switches. The settings for the additional function "load monitoring" can be adjusted via: - the alphanumeric display (page 9-18) the BDA (page 9-94) the PROFIBUS-DP the MODBUS These settings can only be adjusted if the trip unit is activated, i.e. it must be connected to an external 24 V DC voltage supply (UL Listed Class 2). Protective functions Overload protection - L-tripping (page 9-12) Short-time delayed short-circuit tripping - S-tripping (page 9-12) Instantaneous short-circuit tripping - I-tripping (page 9-13) Ground-fault tripping - G-tripping (page 9-13) Neutral conductor protection - N-tripping (page 9-14) Load monitoring (load restore / load shedding) (page 9-14) Leading signal for L-tripping (page 9-14) Thermal memory can be switched On/Off (page 9-15) Ground-fault protection modules (page 9-45) Characteristics The ranges shown in the following are only setting ranges of the respective parameters. Possible tolerance ranges are not included here. Tolerance ranges are shown in the Easy TCC Time Current Curve Software. The characteristics apply to the circuit breaker version H-class, 480 V, frame size II, with ground-fault protection module. L-tripping (page 9-4) S-tripping (page 9-4) Ground-fault tripping (page 9-5) 9-7 9.1.4 Trip unit ETU776 Overview Mechanical RESET for Bell Alarm and remote trip Option: Reset Lockout prevents accidental resetting of the lockout mechanism after a trip Graphical display Trip unit activated Indicators Overcurrent alarm Trip unit error indicator COMMUNICATIONS Operating keys for setting tripping parameters Trip cause indicator 1) Sealing eyelet Rating plug Ground-fault alarm Option: Ground-fault module Indicators Ground-fault tripped Areas to record protective settings Areas to record protective settings Test button CLEAR button Query button Test connector 1) The trip cause is stored internally for at least two days if the trip unit has been activated for at least 10 min before tripping (for unlimited time with auxiliary power). NOTICE Electrostatic Discharge Trip unit may become inoperative. Before the protective cover is removed, ensure that the equipment to be connected, and also the operating personnel, are at the same potential. 9-8 Overcurrent protection settings NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. All parameters for the basic and the additional functions can be adjusted via: - the graphical display (page 9-29) the BDA (page 9-94) the PROFIBUS-DP the MODBUS To do this, the trip unit must be activated, i.e. it must be connected to an external 24 V DC voltage supply (UL Listed Class 2). Protective functions Overload protection - L-tripping (page 9-12) Short-time delayed short-circuit tripping - S-tripping (page 9-12) Instantaneous short-circuit tripping - I-tripping (page 9-13) Ground-fault tripping - G-tripping (page 9-13) Neutral conductor protection - N-tripping (page 9-14) Load monitoring (load restore / load shedding) (page 9-14) Leading signal for L-tripping (page 9-14) Thermal memory can be switched On/Off (page 9-15) Ground-fault protection modules (page 9-45) Characteristics The ranges shown in the following are only setting ranges of the respective parameters. Possible tolerance ranges are not included here. Tolerance ranges are shown in the Easy TCC Time Current Curve Software. The characteristics apply to the circuit breaker version H-class, 480 V, frame size II, with ground-fault protection module. L-tripping (page 9-4) I-tripping (page 9-5) Ground-fault tripping (page 9-5) 9-9 9.1.5 Indicators Scope of indications depends on the type of trip unit. Trip unit is activated I > Imin - or when 24 V auxiliary power is applied. Imin: - 80 A for frame size II - 150 A for frame size III Flashing LED Overcurrent alarm - Steady LED, if I IR Communication active - Another CublicleBUS module has been recognized and communication started. Extended protective function has tripped - due to metering function - trip cause saved in event memory - trip cause readable via: BDA PROFIBUS-DP / MODBUS graphical display (ETU776) external digital output modules 9 - 10 Protective function has tripped (overcurrent) - Indicator lights up when the Query button is pressed - Only one trip cause is displayed - Only the last trip cause is displayed or LED T.U. ERROR 1. T.U. Error flashes: Limited protective function, the protective parameters are reset to minimum values. Causes: - Rated current of the rating plug is higher than that of the circuit breaker - Rotary coding switch in undefined intermediate position - Trip unit defective 2. T.U. Error lights up continuously: Protective function not available. Causes: - Rating plug not compatible with circuit breaker type - Trip unit defective 9 - 11 9.1.6 Protective functions 9.1.6.1 Basic protective functions The basic protective functions of the trip unit are ensured without additional auxiliary voltage. The required energy is supplied by the circuit breaker's internal energy transformers. To evaluate the currents, the electronic system of the trip unit calculates the r.m.s value. The individual functions are parameterized according to the types via: - rotary coding switch (ETU745 - 748) - electronic data transfer (ETU776) via: - the BDA - the PROFIBUS-DP / MODBUS - the control board (ETU776) Overload protection - L-tripping The current setting IR defines the maximum continuous current the circuit breaker can carry without tripping. The long-time delay tR determines the maximum duration of an overload without tripping. Setting values for IR ETU745 - 748 IR = (0.4 / 0.45 / 0.5 / 0.55 / 0.6 / 0.65 / 0.7 / 0.8 / 0.9 / 1.0) x In ETU776 IR = (0.4 - 1.0) x In (given in Amps) Setting values for tR ETU745 - 748 tR = 2 / 3.5 / 5.5 / 8 / 10 / 14 / 17 / 21 / 25 / 30 sec. (at 6 x IR) ETU776 tR = 2 - 30 sec. (at 6 x IR) The tripping characteristic is an I2t characteristic. Some trip units can be switched over to an I4t characteristic. (page 9-15) Short-time delayed short-circuit tripping - S-tripping On trip units ETU745 - 776, tripping due to the short-circuit current Isd can be delayed by the time tsd. This provides selectivity for short-circuit protection in switchgear with several grading levels. Setting values for Isd ETU745 - 748 Isd = (1.25 / 1.5 / 2 / 2.5 / 3 / 4 / 6 / 8 / 10 / 12) x In ETU776 Isd = 1.25 x In - 0.8 x ICW (given in Amps) Setting values for tsd ETU745 tsd = 0.02(M)1) / 0.1 / 0.2 / 0.3 / 0.4 sec.; OFF ETU748 tsd = 0.02(M)1) / 0.1 / 0.2 / 0.3 / 0.4 sec. ETU776 tsd = 0.02(M)1) / 0.08 - 4 sec.2); OFF 1) 2) The delay time 0.02 sec. is not an I2t function. The motor protection function is activated in this position. For settings tsd >0.4 sec., the maximum possible setting Isd is reduced automatically according to the frame size: Frame size I : 15 kA Frame size II : 20 kA Frame size III : 30 kA The setting "OFF" for trip units ETU745 and ETU776 is provided to deactivate the short-time delayed short-circuit protection. If the zone selective interlocking (ZSI) (page 9-15) is used and the ZSI module is set to "S" or "S+G" the adjusted delay time tsd is automatically set to 50 ms provided that in the event of short-circuit the circuit breaker does not receive a blocking signal from a downstream circuit breaker. In this case regardless of the adjusted tsd value the circuit breaker will trip after 50 ms. If a blocking signal exists the adjusted delay time tsd is valid. For safety reasons after 3 s the blocking signal is terminated. 9 - 12 Some trip units can be switched over to an I2t-characteristic. (page 9-16) Motor protection function In the circuit breaker position tsd = M 0.02 sec., a special protection function for electromotive drives is activated. It prevents the short-time delayed short-circuit tripping from being activated during the switch-on current peak of electric motors. At the same time, a phase failure protection is activated (page 9-14) and the time constant for the internally calculated reproduction of the temperature rise and cooling process is switched over from switchgear protection to motor protection. Instantaneous short-circuit tripping - I-tripping If the current setting Ii is exceeded, the circuit breaker is tripped instantaneously. Setting values for Ii ETU745 OFF: Ii = ICW Ii = (1.5 / 2.2 / 3 / 4 / 6 / 8 / 10 / 12 x In MAX = 0.8 x ICW ETU748 Ii > ICW ETU776 Ii = 1.5 x In - 0.8 x Ics ; OFF : Ii = ICW Ground-fault tripping - G-tripping If the trip unit is equipped with a ground-fault protection module, loads can be protected against impermissibly high ground-fault currents. Trip units ETU745 - 776 can be equipped with it optionally. Ground-fault protection modules (page 9-45) The response value Ig, together with the setting for the delay time tg, determines the shutdown of ground-fault currents. Setting values for Ig Frame size I & II III A 100 A 400 A B 300 A 600 A C 600 A 800 A D 900 A 1000 A E 1200 A 1200 A Setting values for tg ETU745 - 748 tg = 0.1 / 0.2 / 0.3 / 0.4 / 0.5 sec. ETU776 tg = 0.1 - 0.5 sec. If the zone selective interlocking (ZSI) (page 9-15) is used and the ZSI module is set to "S" or "S+G" the adjusted delay time tg is automatically set to 100 ms provided that in the event of ground-fault the circuit breaker does not receive a blocking signal from a downstream circuit breaker. In this case regardless of the adjusted tg value the circuit breaker will trip after 100 ms. If a blocking signal exists the adjusted delay time tg is valid. For safety reasons after 3 s the blocking signal is terminated. Some trip units can be switched over to an I2t-characteristic. 9 - 13 Neutral conductor protection - N-tripping Trip units ETU745 - 776 also make it possible to protect the neutral conductor against overload. This requires a current transformer for the neutral conductor, which can be retrofitted if necessary. (page 9-92) For tripping, the same long-time delay tR applies as for overload tripping. Setting values for IN ETU745 - 748 IN = (0.5 / 1.0) x In; OFF ETU776 IN = (0.2 - 2.0) x In; OFF NOTICE Neutral Conductor Overheating. Neutral conductor or insulation may be damaged. Settings IN > 1 x In should only be used if the neutral conductor has been properly sized. 9.1.6.2 Additional functions Load monitoring (load restore / load shedding) Trip units ETU745 - ETU776 offer the possibility of additional load monitoring. Two current values, "load shedding" and "load restore", as well as a delay time tx, can be set. If the setting value "load restore" is undershot, and the lower limit value for current transmission is exceeded at the same time, a signal is output by the CublicleBUS after the set delay time tx has elapsed. If the setting value "load shedding" is exceeded, a signal is output by the CublicleBUS after the set delay time tx has elapsed. These signals can be used to connect or disconnect loads, thereby preventing an overload tripping of incoming circuit breakers. Setting values for load monitoring "Load shedding" and "load restore" 40 A - 1.5 x In Delay time tx = 1 - 15 sec. Load monitoring can be adjusted via: - the alphanumeric display (ETU745 - 748) the graphical display (ETU776) the BDA the PROFIBUS-DP the MODBUS. Leading signal for L-tripping Trip units ETU745 - 776 provide a leading signal for "L-tripping", which is transmitted via the CublicleBUS 100 milliseconds before overload tripping. In this way it is possible e.g. to disconnect thyristor controllers. Phase failure protection Trip units ETU776, the phase failure protection can also be activated when the motor protection is not activated. If the phase failure protection is activated and the operating current of the lowest loaded phase is 50% lower than the operating current of the highest loaded phase, the setting value IR is automatically reduced to 80%. If the values of the three phase currents differ by less than 50%, the setting IR applies again. 9 - 14 Thermal memory can be switched On/Off Trip units ETU745 - 776 make it possible to continue with the internally calculated reproduction of the thermal processes in downstream switchgear and consumers even if the circuit breaker is open and the electronic system has no external supply. In this way, an effective protection against thermal overload can also be guaranteed for frequent closing and opening processes. The thermal memory can be activated via: - a slide switch (ETU745, ETU748) - the graphical display (ETU776) the BDA (ETU776) the PROFIBUS-DP (ETU776) the MODBUS (ETU776). Zone selective interlocking If the circuit breaker is combined with a ZSI module (page 9-83), a short-circuit occurring in systems with several grading levels can be precisely localized. For this purpose, all circuit breakers are interconnected through their ZSI-modules. When a short-circuit occurs, each circuit breaker affected by the short-circuit current queries its downstream circuit breaker to determine whether the short-circuit is also present in the next downstream grading level. In the direction of the energy flow, only the circuit breaker nearest to the short-circuit is tripped. A delay time which may have been set for the short-circuit tripping is deactivated. However, tripping takes place after 50 milliseconds at the earliest. Overload protection switchable to I4t Trip units ETU745 and ETU776 make it possible to switch over from the I2t to an I4t inverse-time function for overload protection by means of a slide switch. This improves the selectivity of the overload protection in combination with fuses. In this case, the setting options for the long delay time tR change as follows: Setting values for tR ETU745 - 748 tR = 1 / 2 / 3 / 4 / 5 sec. (at 6 x IR) ETU776 tR = 1- 5 sec. (at 6 x IR) 9 - 15 Short-time delayed short-circuit protection switchable to I2t Trip units ETU745 - 776 make it possible to switch over from a constant delay time to an I2t-characteristic. In this way, the delay time depends on the short-circuit current, but with a constant I2tsd-value, providing better coordination with downstream fuses. In this case, the setting options for the short-time delay tR are as follows: Settings for tsd ETU745 - 748 tsd = 0.1 / 0.2 / 0.3 / 0.4 sec. (at 12 x In) ETU776 tsd = 0.1 - 0.4 sec. (bei 12 x In) Switchover to the I2tsd characteristic can be made via: - the tsd rotary coding switch (ETU745 - 748); this must be set to a value in the white area. . - the graphical display (ETU776) the BDA (ETU776) the PROFIBUS-DP (ETU776) the MODBUS (ETU776). Changeable parameter sets Trip units ETU745 - 776 make it possible to store two different parameter sets for protective functions. This enables new protection settings to be adopted when a transfer to another supply source takes place. Switchover can be made manually via: - the graphical display (ETU776) - the test socket with the BDA or automatically via: - the CublicleBUS with an input signal at the digital input module. - the PROFIBUS-DP - the MODBUS. 9 - 16 Ground-fault protection switchable to I2t characteristic The ground-fault protection modules for trip units ETU745 - 776 make it possible to switch over from a constant delay time to an I2t characteristic. This provides an inverse-time tripping characteristic with a constant I2tg value, providing better selectivity of the ground-fault protection in systems with several grading levels. The setting options for the delay time remain unchanged. Switchover to the I2tg characteristic can be made via: - the tg rotary coding switch (ETU745 - 748); this must be set to a value in the white area. - the graphical display (ETU776) the BDA (ETU776) the PROFIBUS-DP (ETU776) the MODBUS (ETU776). Ground-fault alarm Ground-fault protection modules (page 9-45) 9 - 17 9.1.7 ETU displays 9.1.7.1 Alphanumeric display Trip units ETU745 and ETU748 can be retrofitted with an alphanumeric display. Overview (1) (2) (3) Screen (4 lines with 20 characters each) Up key Down key 9 - 18 Field installation The trip units ETU745 and ETU748 can be field installed with an alphanumeric display. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN circuit breaker and discharge the closing spring (page 24-2) - Disconnect external 24 V DC voltage supply, if applicable - Remove sealing cap of trip unit, if applicable (page 9-53) Removing dummy flange 4 3 1 5 2 Installing display and latching it tight 2 1 - Fit and seal trip unit sealing cap, if applicable (page 9-53) - Reconnect external 24 V DC voltage supply, if applicable 9 - 19 3 Modifying the angle of the display At the factory, the alphanumeric display is installed with a downward inclination. However, it can be turned in a vertical direction by 180, the display is then inclined upwards. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Disconnect external 24 V DC voltage supply, if applicable - Remove trip unit sealing cap, if applicable (page 9-53) Removing the display 3 4 1 5 2 9 - 20 Turn the display through 180, insert and lock it into place 2 1 3 - Fit and seal the trip unit sealing cap, if applicable (page 9-53) - Reconnect external 24 V DC voltage supply, if applicable Catalog number Catalog No. Alphanumeric display for ETU745 - 748 9 - 21 WLLCD48 Menu structure ETU745 - 748 After the supply voltage has been applied, the display changes from "Power-up screen" to "Autoscroll" mode after about 5 sec. Thereafter, further modes can be accessed by means of the two buttons. Overview Start Power-up-screen 5s Mode "Fixed screen display" Mode "Autoscroll" Mode "Parameter setting" 10 s + Mode "Contrast setting" 0483_u + "Autoscroll" mode During normal operation, the display is in "Autoscroll" mode To access "Autoscroll" mode, press the following button(s) In "Fixed screen display" mode In "Tripping counter reset" mode or In "Contrast setting" mode In "Parameter setting" mode + Do not press any button for 10 seconds In "Tripping info" mode In this mode, the display automatically changes to the next screen every 5 seconds. If there is no measurement module available, the display changes continuously back and forth between screens 1 and 2. If there is a measurement module available, a total of five screens are displayed in "Autoscroll" mode. 9 - 22 Screens displayed in "Autoscroll" mode without measurement module Screen 1 I1....=......00000.A I2....=......00000.A I3....=......00000.A IN....=......00000.A Screen 2 Ig....=......00000.A Current I1 Current I2 Current I3 Current IN Ground-fault current Ig (A value is only displayed if a ground-fault protection module is fitted.) with metering module installed, additionally Screen 3 KW...=...00000.kW KVA..=....00000.kVA KVAR.=...00000.kVAR PF...=...0,000.xxxx Screen 4 V12.=.........0000.V V23.=.........0000.V V31.=.........0000.V Screen 5 W. .=...00000,00.MWh W. .=...00000,00.MWh PowerFlowDir....... f...=........00,0 Hz Active power P Apparent power S Reactive power Q Power factor Voltage V12 Voltage V23 Voltage V31 Energy (positive direction) Energy (negative direction) Present direction of energy flow Frequency NOTE The data to be displayed are updated every time the screen page is set up again. No updates take place when a screen page is being displayed. Button functions in "Autoscroll" mode Display is frozen; Switchover to "Fixed screen display" mode Change to "Parameter setting" mode + Mode "Fixed screen display" 9 - 23 Change to "Contrast setting" mode To access "Fixed screen display" mode, press the following button: In "Autoscroll" mode In this mode, maintenance information is provided with the number of circuit breaker trips and switching operations as well as with maintenance instructions. The information displayed depends on the number of circuit breaker trips operations. Num.of.Trips...00000 Num.of.Ops.....00000 Num.of.Trips...00000 Num.of.Ops.....00000 Prepare for contact maintenance Number of trips Number of switching operations Number of trips Number of switching operations Maintenance instructions Button functions in "Fixed screen display" mode Change to next higher screen level Change to "Autoscroll" mode + Change to "Tripping counter reset" mode "Tripping counter reset" submode This mode makes it possible to reset the counter for the trips and the switching operations to zero. NOTE The counter should only be reset after contact maintenance. If the counter is reset without contact maintenance having been performed, the maintenance information displayed will not correspond to the actual condition of the contacts. To access "Tripping counter reset mode", press the following button(s) In the "Fixed screen display" mode + Screens displayed in "Tripping counter reset" mode Screen 1 Reset.Trips.and.Ops Counter? yes:. + no:. .or. This screen is used for safety queries. Reset the counter after contact maintenance only. 9 - 24 Screens displayed in "Tripping counter reset" mode Screen 2 Trips.and.Ops Counter.reset continue:. .or. Counter reset for trips and switching operations confirmed. Button functions in "Tripping counter reset" mode If screen 1 is displayed or + Canceling, no counter reset to zero Change to "Autoscroll" mode Counter reset to zero Change to screen 2 If screen 2 is displayed or 9 - 25 Change to "Autoscroll" mode "Parameter setting" mode NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. In this mode, the following parameters can be adjusted: - load shedding load restore delay time for load shedding/load restore language setting for display To access "Parameter setting" mode, press the following button(s): In "Autoscroll" mode Screens displayed in "Parameter setting" mode Screen 1 Change Parameters Load.Shed..=.0000.A =+ =.und. =Confirm Screen 2 Change Parameters Load.Restore=.0000.A =+ =.und. =Confirm Screen 3 Change Parameters tx..........=...00.s =+ =.und. =Confirm Screen 4 Change Parameters Sprache/Lang=...XXXX =+ =.und. =Confirm Screen 5 Changed.Parameter being.saved, wait.10s Setting Load shedding Setting Load restore Setting Delay time Load shedding/load restore Setting Display language XXXX may be ENGL or GERM Parameter settings are being changed, switches to "Autoscroll" mode after 10 seconds NOTE When screen 1, 2, 3 or 4 is displayed and no key is pressed within 10 seconds, "Parameter setting" mode is canceled. Any parameter changes performed are not accepted. Display switches back to "Autoscroll" mode 9 - 26 "Contrast setting" mode In this mode, the contrast of the display can be adjusted. To access "Contrast setting" mode, press the following button(s): In "Autoscroll" mode + Screens displayed in "Contrast setting" mode Screen 1 Contrast Adjust 0 + 50 - 100 % Enter Contrast setting The longer the bar, the higher the contrast Button functions in "Contrast setting" mode Increases the contrast Reduces the contrast + Accept the contrast, switch to the "Autoscroll" mode "Tripping info" screen This mode will automatically be activated as soon as a trip occurs, provided an external 24 V DC voltage supply has been connected. Screens displayed in "Tripping info" mode Tripping type Phase affected XX may be: L, S, I, G, N, M1) YY may be: L1, L2, L3, 1) Measurement function Button functions in "Tripping info" mode or Display of maintenance instructions If pressed again: Switches back to "Tripping info" mode Press CLEAR button Switches to "Autoscroll" mode 9 - 27 "Display parameter changes" screen The display automatically switches to this mode when a parameter has been changed via the rotary coding switches, provided an external 24 V DC voltage supply has been connected. Screens displayed in "Display parameter changes" mode Parameter changed: XXXXXX.=...000000.YY Display of the changed value Displayed technical data and units IR ISD Ii IN Ig Ig.alarm tg I^2tg I^2tR I^4tR tSD I^2tSD th.mem Changed data Unit IR.....=....00000.YY ISD....=....00000.YY Ii.....=....00000.YY IN.....=....00000.YY Ig.....=.....0000.YY Ig.alarm.=...0000.YY tg.....=......000.YY I^2tg..=......000.YY I^2tR..=......000.YY I^4tR..=........0.YY tSD....=......000.YY I^2tSD.=......000.YY th.mem.=.........YYY A A A A A A ms ms s s ms ms .. Current for overload tripping Current for short-time delayed short-circuit tripping Current for instantaneous short-circuit tripping Current for overload protection of the N conductor Current for ground-fault protection tripping (this is only displayed if ground-fault protection module is available) Response current for ground-fault protection alarm indicator (this is only displayed if a ground-fault protection module is installed) Delay time for ground-fault protection (this is only displayed if a ground-fault protection module is installed) Inverse-time delay (I2t-dependent) of ground-fault protection (this is only displayed if a ground-fault protection module is installed) Inverse-time delay (I2t-dependent) for overload tripping Inverse-time delay (I4t-dependent) for overload tripping Delay time for short-circuit tripping Inverse-time delay (I2t-dependent) for short-circuit tripping Indicates whether thermal memory is On/Off Button functions in "Display parameter changes" mode The changed value is displayed for 4 seconds. The display then switches back to the previous mode. 9 - 28 9.1.7.2 Graphical display The ETU776 trip unit equipped with a fixed-mounted graphical display as standard. This display enables a text output with a maximum of 8 lines or the graphical representation of characteristics. It is used both to display data as well as to parameterize the trip unit and the measurement function. The display is operated via the operating keys provided on the trip unit. (1) (2) (1) (2) Graphical display Operating keys Display overview (1) (2) (3) Menu title 8-line alphanumeric display or graphical representation of characteristics Status line Status line The status line shows, by means of bold symbols, which actions the operator can carry out and which settings are currently active at this moment. PAR A (1) (1) (2) (3) (4) (5) (6) 9 - 29 (2) Access with password only Maintenance required Set parameter set for protective functions Editing option Set trigger Possible actions by the operator (3) TRIG AB ESC (4) (5) (6) Representation of bar diagrams The measured values for some parameters are displayed both as numerical values and graphically in the form of a bar diagram. (1) (2) (3) (4) (5) Lowest measured value Present measured value Current measured valuee 100% of the measured parameter Width of display The markings for the lowest and highest measured value are automatically updated during the measurement. Display during operation After the supply voltage is applied, the display switches from the "power up screen" to the operational screen after approximately 5 seconds. It shows the currents in the three phases and in the neutral conductor as numerical values and in the form of a bar diagram. The background illumination of the display is automatically switched off after approximately 1 minute. It can be switched on again by pressing any button. (enter) (esc) or screen saver times out screen saver times out (esc) (any key) Polling the main menu 9 - 30 Navigating in the menu structure Use the operating keys to navigate in the menu structure. Button functions Shift the marking Select the marked menu item Switch back to the previous menu Selection of a menu item 9 - 31 Displaying measured values Example 1: Displaying the currents Di a g n o s t i c Vi e w P a r a me t e r Ch a n g e P a r a me t e r a v g = 7 5 2 A Ua v g = 4 0 1 V P = + 2 7 7 kW S = 3 0 2 k VA I d e n t i f i c a t i o n Q Cl e a r p f Se t u p PAR (esc) Di s p l a y TRIG A = + a v g = 1 2 0k VAR 0. 9 1 8 = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 PAR = 1 L 2 = 7 5 8 A I L 3 = 7 5 0 A = N g = 4 0 1 V = + 2 7 7 kW k VA = 3 0 2 Q = + 1 2 0k VAR p f a v g = L 1 m i n = 1 7 0 6 A 2 8- J AN- 0 3 1 6: 2 9: 3 2. 0 1 I L 1 m a x = 7 8 8 A A 0 8: 5 9: 3 8. 2 1 PAR A AB (down 7x) TRIG AB (up 7x) CURRENT S W I TRIG A ME T E R I N G v 0 PAR AB (up 8x) P A I I Hz (down 8x) Ua 7 6 5 L 0 4- J AN- 0 3 TRIG A L l a g W AB I I (esc) I (enter) Me t e r i n g CURRENT (enter) ME T E R I N G (enter) ME N U (esc) MA I N 0. 9 1 8 l a g I g = 5 A I a v g = 7 5 2 A I a v g l = 7 5 2 A Un b a l . = 1 0 % t = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 Hz T e mp = 2 2 5. 0 F PAR PAR TRIG A TRIG A AB AB Example 2: Displaying the frequency P a r a me t e r Ch a n g e v g = 7 5 2 A v g = 4 0 1 V P a r a me t e r P = + 2 7 7 kW S = 3 0 2 k VA I d e n t i f i c a t i o n Q Cl e a r p f PAR A Se t u p TRIG (esc) Di s p l a y = + a v g = 1 2 0k VAR 0. 9 1 8 = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 PAR A Hz TRIG (up 8x) = 4 0 1 V = + 2 7 7 kW S = 3 0 2 k VA Q = + 1 2 0k VAR p f a v g = 0. 9 1 8 = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 Hz T e mp = 2 2 5. 0 F A TRIG AB = 1 0 % = 1 0 % f m i n = 5 0. 0 2 Hz 2 8- J AN- 0 3 1 6: 2 9: 3 2. 0 1 f m a x = 5 0. 0 2 Hz 0 4- J AN- 0 3 F o r m F = 4. 0 Cr e s t F = 4. 0 PAR 0 8: 5 9: 3 8. 2 1 TRIG AB (down5x) PAR A TRIG AB (up 5x) H a r mo n i c s l a g W PAR H D Hz F RE QUE NCY P g UT 5 0. 0 2 A ME T E R I N G v T H D AB (down 8x) Ua I = l a g W AB F r e q F REQ (esc) Vi e w a Ua I Di a g n o s t i c (enter) Me t e r i n g F RE QUE NCY (enter) ME T E R I N G (enter) ME N U (esc) MA I N PAR A TRIG AB 9 - 32 Example 3: Displaying harmonics ME T E R I N G v g = 7 5 2 A v g = 4 0 1 V P a r a me t e r P a r a me t e r P = + 2 7 7 kW S = 3 0 2 k VA Q Cl e a r p f Di s p l a y Se t u p PAR A (esc) I d e n t i f i c a t i o n = + a v g = 1 2 0k VAR 0. 9 1 8 = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 PAR A AB r q = 5 0. 0 2 I T H D = 1 0 % = 1 0 % e UT H D Hz TRIG F o r m F = 4. 0 Cr e s t F = 4. 0 PAR A AB (down 8x) Hz l a g W TRIG f (up 8x) TRIG AB (down5x) ME T E R I N G (up 5x) F RE QUE NCY H A R MON I C S = 4 0 1 V P = + 2 7 7 kW S = 3 0 2 k VA 2 0. 0% 0. 0% Q = + 1 2 0k VAR 3 0. 0% 0. 0% 0. 0% Ua p f v g a v Ua g 1 0. 0% v g 1 0. 0% l a g 4 0. 0% = + 2 1 2 0 7 M Wh r 5 9. 0% 9. 0% f r e q = 6 0. 0% 0. 0% T e mp = 7 3. 0% v g 0. 9 1 8 I T HD W a = H a r mo n i c s 5 0. 0 2 Hz 2 2 5. 0 F PAR A PAR TRIG A AB (esc) Vi e w Ch a n g e a Ua I Di a g n o s t i c (enter) Me t e r i n g F RE QUE NCY (enter) ME N U (esc) MA I N TRIG 3. 0% PAR TRIG A AB AB (down 28x) (up 28x) H A R MON I C S 2 2 0. 0% 0. 0% 2 3 0. 0% 0. 0% 2 4 0. 0% 0. 0% 2 5 0. 0% 0. 0% 2 6 0. 0% 0. 0% 2 7 0. 0% 0. 0% 2 8 0. 0% 0. 0% 2 9 0. 0% 0. 0% PAR TRIG A AB Displaying parameters Example 4: Displaying parameters parameter settings Ch a n g e P a r a me t e r I d e n t i f i c a t i o n Cl e a r P ROT . SET B L T r i p = 1 0 0 0 A St a t u s = On S T r i p = 8 5 0 0 s Pi c k u p = 1 0 0 0 I T r i p = 1 4 4 0 0 A Me t e r i n g N T r i p = 1 2 0 A Se t p o i n t s G Pr o t e c = 5 0 0 A Pr o t . Pa r . Se t A Pr o t . Pa r . Se t B C o mmu n i c a t i o n PAR A TRIG AB PAR. T h e r mM e m= Se t u p Ph a s e Se n = (esc) Di s p l a y 9 - 33 Co n f i g . PAR A TRIG AB T a u = PAR A (enter) P a r a me t e r P A R A ME T E R (esc) Vi e w (enter) Di a g n o s t i c VI EW Sy s t e m T r i p De l a y = I * t = I On 1 0 0 TRIG AB PAR A A 4. 8 Of f (esc) ME N U (enter) MA I N Me t e r i n g TRIG AB s 4 t Example 5: Displaying active power P a r a me t e r Ch a n g e v g = 7 5 2 A v g = 4 0 1 V P a r a me t e r P = + 2 7 7 kW S = 3 0 2 k VA I d e n t i f i c a t i o n Q Cl e a r p f Se t u p PAR (esc) Di s p l a y TRIG A = + a v g = P L 1 = + 2 7 8 kW P L 2 = + 2 7 7 kW P L 3 = + 2 7 9 kW = + 2 7 7 kW P a v g P 1 2 0k VAR 0. 9 1 8 = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 PAR Hz g m i n = + 2 5 2 kW 1 6: 2 9: 3 2. 0 1 a v g m a x = + 3 0 2 kW 0 8: 5 9: 3 8. 2 1 PAR TRIG A AB (down 8x) v 0 4- J AN- 0 1 TRIG A a a v g 2 8- J AN- 0 1 P l a g W AB P (esc) Di a g n o s t i c Vi e w a Ua I (enter) Me t e r i n g P O WE R (enter) ME T E R I N G (enter) ME N U (esc) MA I N PAR A AB TRIG AB (up 8x) ME T E R I N G Ua v g P = 4 0 1 V = + 2 7 7 kW k VA S = 3 0 2 Q = + 1 2 0k VAR p f a v g = 0. 9 1 8 l a g W = + 2 1 2 0 7 M Wh r f r e q = 5 0. 0 2 Hz T e mp = 2 2 5. 0 F PAR TRIG A AB Calling up diagnostic information Example 6: Querying maintenance information DI AGNOS T I C P a r a me t e r (enter) Di a g n o s t i c T r i p T o t a l L o g = 2 2 7 w/ l o a d = Op s 1 2 5 SI T r i p s = Ma i n t e n a n c e L T r i p s = 1 I d e n t i f i c a t i o n Cu b i c l e BUS g T r i p s = 5 Cl e a r Wa v e f o r m Op Ho u r s P a r a me t e r PAR A Se t u p TRIG AB I n t . PAR A TRIG (esc) Di s p l a y (esc) Ch a n g e Se t p o i n t s Op s Su m = 2 1 3 2 5 4 F a u l t = I 2 t PAR 3 TRIG A AB 8 L 1= AB (down 11x) (up11x) MA I N T E N A N C E g T r i p s Op Ho u r s I n t . = = CONT ACT 1 3 2 5 4 F a u l t = 8 Su m I 2 t L 1= 3 Su m I 2 t L 2= 3 Su m I 2 t L 3= 3 Su m I 2 t N= 0 Co n t a c t PAR A E ROS I ON 5 Er o s i o n TRIG AB (enter) Wa r n i n g s Me t e r i n g Vi e w MA I N T E N A N C E (esc) ME N U (enter) MA I N Af t e r c h e c k T r i p c o n t a c t s PAR A TRIG AB 9 - 34 Example 7: Adjusting representation of characteristics DI AGNOS T I C P a r a me t e r P a r a me t e r L o g Se t p o i n t s Cu b i c a l BUS Cl e a r Wa v e f o r m PAR TR I P Pr o t . Ev e n t Ov e r l o a d No (enter) Ev e n t T r i g g e r EVENT PROT . P a r a me t e r s Vo l t a g e P o we r TRIG PAR PAR A 9 - 35 T r i g 1s s 0s T r i p I T r i p G T r i p N T r i p PAR Pr e TRIG AB PAR A TRIG A AB P OS I T I ON T 0. 3 0 (esc) 0. 8 0 S AB T r i g 1s 0s (enter) T Pr e T r i p P OS I T I ON (down 5X) P OS I T I ON 0s TRIG A AB s 1s T Pr e 0. 3 0 TRIG AB (esc) A AB P AR AME T E R S L (esc) (esc) F r e q u e n c y PAR TRIG A Cu r r e n t Re a l PAR AB (enter) T R I GGER Se t p o i n t TRIG A AB (esc) TRIG A (enter) (esc) Se t u p PAR T r i p Se t u p Wa v e f o r m Ma i n t e n a n c e I d e n t i f i c a t i o n Di s p l a y Di s p l a y PAR A T r i g s TRIG AB (enter) Ch a n g e T r i p Wa v e f o r m (enter) (enter) Di a g n o s t i c Vi e w WA V E F O R M Wa r n i n g s (enter) ME N U (esc) MA I N Me t e r i n g SET UP T r i g g e r A Se t T r i g g e r B T RI GGE R A T r i g g e r = L (enter) Se t SET (enter) (enter) WA V E F O R M T r i p Po s i t i o n = 0s 1s (esc) T A TRIG PAR A AB (enter) SET TRIG AB T RI GGE R A T r i g g e r = L (enter) PAR (esc) (esc) Re s e t / St a r t T r i p Po s i t i o n = 0s 1s (esc) T (esc) Re s e t / St a r t PAR A (enter) SET TRIG AB T RI GGE R A RESET / ST ART T r i p T r i g g e r No w A 3 sec. L (enter) T r i g g e r = Mo n i t o r i n g Po s i t i o n = 0s 1s T Re s e t / St a r t (esc) PAR A TRIG AB PAR A TRIG AB 9 - 36 DI AGNOS T I C Me t e r i n g Wa r n i n g s Di a g n o s t i c T r i p P a r a me t e r Se t p o i n t s P a r a me t e r I d e n t i f i c a t i o n Cl e a r A Ma i n t e n a n c e Cu b i c a l BUS Wa v e f o r m PAR TRIG A Ev e n t s Up l o a d B Ev e n t s UP L OAD (enter) Up l o a d TRIG A AB CURRENT S AB A Pl e a s e TRIG AB (esc) PAR Wa i t . . . Up l o a d PAR A PAR A EVENT S I n Pr o c e s s 9 - 37 Se t u p Wa v e f o r m Se t u p PAR A Di s p l a y TRIG AB (goto "DISPLAY GRAPH" in example 9) TRIG AB (esc) Di s p l a y Wa v e f o r m L o g (esc) Ch a n g e (esc) Vi e w WA V E F O R M (enter) ME N U (enter) MA I N (enter) Example 8: Selecting event for displaying characteristics A Cu r r e n t s G & N Vo l t a g e s PAR A AB + (enter) (enter) (esc) TRIG (enter) UP L OAD Cu r r e n t s Gr a p h PAR TRIG AB 5 sec. UP L OAD A T r i g g e r No t EVENT Up l o a d Di s p l a y (esc) (enter) Ev e n t WA V E F O R M (esc) DI SPL AY EVENT S Ha s Oc c u r r e d PAR A TRIG AB 9 - 38 Example 9: Displaying characteristics ME N U DI AGNOS T I C Wa r n i n g s (enter) Me t e r i n g Di a g n o s t i c P a r a me t e r Ch a n g e P a r a me t e r T r i p L o g Se t p o i n t s Ma i n t e n a n c e I d e n t i f i c a t i o n Cu b i c l e BUS Cl e a r Wa v e f o r m Se t u p PAR TRIG A PAR TRIG A AB WA V E F O R M DI SPL AY DI SPL AY AB GRAP H Gr a p h 5 sec. Up l o a d Di s p l a y (enter) Ev e n t (esc) Di s p l a y T r i g g e r A Cu r r e n t s Re c o r d e d PAR PAR TRIG A A AB (enter) 5 sec. DI SPL AY No GRAP H Da t a Av a i l a b l e Pl e a s e Up l o a d Ev e n t PAR A 9 - 39 (esc) Vi e w (enter) MA I N TRIG AB TRIG AB WA V E F O R M Se t u p (enter) Wa v e f o r m Di s p l a y (esc) Wa v e f o r m A I L TRIG AB WA V E F O R M 1 I L WA V E F O R M 1 L 2 X L 2 L 3 L 1 t = T PAR A 0 A 0. 0 0 0 s WA V E F O R M 1 L 2 L 3 XX L 3 X L g LN = L T L g I I T (enter 8X) T (down 2X) PAR L g LN I L 1 = - 1 0 0, 0 0 0 t = TRIG AB T + 0. 0 0 8 PAR A A LN I L s 1 = - 1 0 0, 0 0 0 t = + 0. 0 0 8 T PAR TRIG A AB A s TRIG AB (enter) I L WA V E F O R M 2 T L 1 (esc) goes to "DISPLAY WAVEFORM" menu L 3 X L g LN I L 2 = - t = T 8 0, 0 0 0 A + 0. 0 0 8 s PAR A TRIG AB 9 - 40 Changing parameters P a r a me t e r Ch a n g e P a r a me t e r I d e n t i f i c a t i o n Cl e a r P A R A ME T E R Co n f i g . Pr o t . Pa r . Se t A Pr o t . Pa r . Se t B P ROT . TRIG AB 1 0 0 0 A S T r i p = 8 5 0 0 s I T r i p = 1 4 4 0 0 A N T r i p = 1 2 0 A Pr o t e c = 5 0 0 A T h e r mM e m= Of f Ph a s e Se n = (esc) A B = G Se t u p PAR PAR. Me t e r i n g C o mmu n i c a t i o n Di s p l a y SET T r i p Se t p o i n t s PAR TRIG A P ROT . AB PAR. P a r a me t e r No t SET A B Ch a n g e Sa v e d PAR (esc) Vi e w (enter) Di a g n o s t i c CHANGE Sy s t e m T a u PAR AB PAR. P a r a me t e r ! ! 1 0 0 TRIG A P ROT . On = (esc) ME N U (enter) MA I N Me t e r i n g (enter) Example 10: Setting protection parameters SET B Ch a n g e Sa v e d PAR TRIG A AB TRIG AB Settings the display Example 11: Entering password Sy s t e m Vi e w P a r a me t e r Ch a n g e P a r a me t e r T i me P a s s wo r d Sc r e e n Co n t r a s t T e mp PAR A P s wr d * * * * (esc) Un i t PAR TRIG A AB TRIG AB P A S S WO R D (enter) Ne w Sa v e r Cl e a r Se t u p En t e r L a n g u a g e I d e n t i f i c a t i o n Di s p l a y P A S S WO R D P a s s wo r d Ch a n g e NOT Sa v e d PAR A TRIG AB P A S S WO R D P a s s wo r d Ch a n g e Sa v e d (esc) PAR A 9 - 41 TRIG AB PAR A TRIG AB (esc) Di a g n o s t i c (enter) Me t e r i n g SET UP (enter) DI SPL AY (enter) ME N U (esc) MA I N A 4. 8 s = I * t = PAR A I 4 TRIG AB t 1 0 0 0 A 4. 8 s De l a y = I * t = (esc) De l a y Pi c k u p = PAR TRIG PAR. SET A P ROT . (enter) I 4 t T r i p St a t u s = On Pi c k u p = 9 5 0 A De l a y = 4. 8 s I * t = I 4 (enter) 1 0 0 0 L On t (esc) Pi c k u p = T r i p St a t u s = (down) L (enter) T r i p On (esc) (enter) L St a t u s = Sa v e PAR A AB TRIG AB B P a r a me t e r Ch a n g e s ? = ESC= YES No (esc) PAR TRIG A AB (all greyed except key & pencil) P s wr d En t e r PAR A P s wr d 7 2 6 5 TRIG (esc) 7* * * Ne w (enter) Ne w (esc) (esc) (enter) En t e r P A S S WO R D (enter) P A S S WO R D PAR TRIG A AB AB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P A S S WO R D (enter) Sa v e Ch a n g e s ? = ESC= YES No (esc) PAR A TRIG AB 9 - 42 Identifications Example 12: Identifications ME N U I DE NT I F I CAT I ON (enter) Me t e r i n g Di a g n o s t i c Vi e w P a r a me t e r Ch a n g e P a r a me t e r I d e n t i f i c a t i o n T r i p Un i t Pa r t # T r i p Un i t S/ N T e s t I n f o . Us e r Gi v e n Us e r C o mme n t T RI P UNI T S/ N 4 2 3 8 1 2 6 7 5 2 3 8 (enter) MA I N I D# Cl e a r PAR A TRIG PAR A AB TRIG AB (esc) Se t u p (esc) Di s p l a y PAR TRIG AB ESC A Resetting Example 13: Resetting the measured minimum and maximum values MA I N ME N U CL EAR Di a g n o s t i c Vi e w P a r a me t e r Ch a n g e (enter) Me t e r i n g P a r a me t e r I d e n t i f i c a t i o n Cu r r e n t F a u l t Mi n / Ma x Bu f f e r T e mp Mi n / Ma x T r i p L o g Ma i n t e n a n c e (enter) I n f o Cl e a r Se t u p PAR TRIG A AB (esc) Di s p l a y PAR TRIG A AB MI N / MA X BUF F ER MI N / MA X BUF F ER Mi n / Ma x Bu f f e r Mi n / Ma x Bu f f e r MI N / MA X BUF F ER (enter) NOT Re s e t ! ! Ar e Re s e t Yo u Wa n t T o = ESC= Su r e YES No (esc) PAR A 9 - 43 TRIG AB PAR A TRIG AB PAR A Yo u Re s e t ? TRIG AB 9.1.8 Rating plug The rating plug defines the rated current In within a certain range for a given circuit breaker frame size. If a rating plug with a higher current than the maximum permissible circuit breaker rated continuous current is plugged in, the electronic system of the trip unit recognizes this error and signals it with a flashing T.U. ERROR indicator. The trip unit ignores the rated current value specified by the incorrect rating plug and sets it to the value of the smallest rating plug for the frame size of the relevant circuit breaker. The same happens if a circuit breaker with frame size III is equipped with a rating plug smaller than 800 A. All set protection parameters are adjusted accordingly. It is not permitted to operate the trip unit without a rating plug. If a circuit breaker is nevertheless started up without a rating plug, the T.U. ERROR indicator will light up and the trip unit settings will default to the lowest possible settings for that frame rating. Frame size I II Rating plug Catalog No. III q q 200 A WLRP200 q q 225 A WLRP225 q q 250 A WLRP250 q q 300 A WLRP300 q q 315 A WLRP315 q q 350 A WLRP350 q q 400 A WLRP400 q q 450 A WLRP450 q q 500 A WLRP500 q q 600 A WLRP600 q q 630 A WLRP630 q q 700 A WLRP700 q q q 800 A WLRP800 q q q 1000 A WLRP1000 q q q 1200 A WLRP1200 q q q 1250 A WLRP1250 q q q 1600 A WLRP1600 q q q 2000 A WLRP2000 q q 2500 A WLRP2500 q q 3000 A WLRP3000 q 3200 A WLRP3200 q 4000 A WLRP4000 q 5000 A WLRP5000 9 - 44 Replacing rating plug NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. 1 OPEN 3 2 9.1.9 Ground-fault protection modules Various trip units can be optionally equipped with ground-fault protection modules. The following ground-fault protection modules cannot be removed once they have been installed. Depending on the ground-fault protection module version, the set value being exceeded will cause either an alarm only or an alarm and a trip at the same time. (page 9-13) The following device combinations are possible: Trip unit Ground-fault protection module ETU745 - 748 GFM A 745-748 GFM AT 745-748 ETU776 GFM A 776 GFM AT 776 The following options exist for ground-fault detection: - vectorial summation of the phase currents or vectorial summation of the phase currents and the neutral conductor current if a neutral sensor is used - Direct measurement of the ground-fault current using a separate 1200 A : 1 A ground-fault sensor Input current carrying capacity of the ground-fault protection module: - max. 1 A continuous - max. 5 A for 0.5 sec. Alarm and tripped signals can be transmitted via the c, PROFIBUS-DP and MODBUS. Module GFM A 745 Changeover switch for ground-fault detection Rotary coding switch for ground-fault alarm setting value Ground-fault alarm indicator Rotary coding switch for ground-fault delay setting tg / I2tg - Alarm only, circuit breaker does not trip - The changeover switch for ground-fault detection is only accessible when the control panel or the trip unit itself is removed. 9 - 45 Module GFM AT 745 Changeover switch for ground-fault detection ground-fault alarm Indicators ground-fault tripped Rotary coding switch for ground-fault protection setting value Rotary coding switch for ground-fault alarm setting value Rotary coding switch for ground-fault delay setting tg / I2tg - Ground-fault protection by circuit breaker tripping and alarm signal - Changeover switch for ground-fault protection accessible only when the control panel or the trip unit itself is removed Module GFM A 776 Ground-fault detection mode Ground-fault alarm indicator Labeling areas for recording setting values Labeling areas for recording setting values - Alarm only, circuit breaker does not trip - Module programmable via: - the graphical display (ETU776) - the BDA (ETU776) - the PROFIBUS-DP (ETU776) - the MODBUS (ETU776). Module GFM AT 776 G ALARM Ground-fault detection mode Indicators G tripped Labeling areas for recording setting values Labeling areas for recording setting values - Ground-fault protection by circuit breaker tripping and alarm signal - Module programmable via: - the graphical display (ETU776) - the BDA (ETU776) - the PROFIBUS-DP (ETU776). - the MODBUS (ETU776). - Ground-fault detection selectable: - vectorial summation I = L1+L2+L3+N - external iron core ground-fault current sensor 1200 A : 1 A 9 - 46 Field installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Removing dummy module 2 3 1 Installing and snapping the ground-fault protection module into place 2 1 3 - 9 - 47 Switch on external 24 V DC voltage supply, if planned Adjust settings for ground-fault protection Test the tripping function with the handheld test device (page 9-98) Install and seal sealing cap of trip unit, if applicable (page 9-53) NOTE Once the ground-fault-module is snapped into place, it cannot be removed. Catalog numbers Ground-fault protection module Catalog No. GFM A 745-748 WLGFA48 GFM AT 745-748 WLGFM48 GFM A 776 WLGFA76 GFM AT 776 WLGFM76 9 - 48 9.1.10 Replace the trip unit DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Removing - OPEN circuit breaker and discharge the closing spring (page 24-2) - Remove front panel (page 24-4) 1 2 3 PH 2 5 Nm 44 lb-in During installation 5 4 9 - 49 6 Remove connectors N sensor 1) X24 BSS module 1) Current sensors X20 1) Equipment dependent on type Energy transducer X21 8 7 PH 1 1,2 0,3 Nm 11 lb-in Installation is carried out in the reverse order. After replacing the trip unit, always test with the handheld test device (page 9-98) For ordering trip units, please refer to the latest version of the "Selection and Application Guide" WL Low Voltage Power Circuit Breaker catalog. If a trip unit with another configuration than the existing one is installed, the Catalog No. on the options label of the circuit breaker must be changed according to the catalog data. Please contact the technical assistance hotline if you have any queries. 9 - 50 9.1.11 Internal trip unit self-test on the overcurrent tripping function For commissioning and function testing. Conditions - Trip unit is activated by: operating current external 24 V DC voltage supply - Current not in overload range Indicators (page 9-10) Internal circuit breaker self-test without tripping Normal operation of the circuit breaker is not impaired The test can be canceled at any time by pressing CLEAR 1 Running light All indicators will light up one after other (from left to right or from top to bottom) 2 3 The flashing time corresponds to the long-time delay tR The L-tripping indicator lights up T.U. ERROR indicator lights up The flashing time deviates more than 10% from the set long-time delay tR Test not OK 4 Test OK 5 6 9 - 51 Test not OK Trip unit is defective, even if the L-tripping indicator lights up - LED goes out after 30 sec. - End of internal self-test - Premature ending of test by pressing CLEAR Trip unit OK Testing with handheld test device Handheld test device (page 9-98) NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. Internal circuit breaker self-test with tripping The test can be canceled at any time by pressing CLEAR 1 2 3 1 0075-01-02 Press and hold CLEAR Press and hold TEST Release both buttons at the same time Running light 2 All indicators will light up one after other (from left to right or from top to bottom) 3 4 5 The flashing time corresponds to the long-time delay tR Circuit breaker trips Circuit breaker does not trip Test OK Test not OK The flashing time deviates more than 10% from the set long-time delay tR Test not OK Trip unit is defective, even if the circuit breaker trips q Reclosing a circuit breaker trip- Test with handheld test device ped by the trip unit (page 6-9) - Check wiring between trip unit and tripping solenoid - Test tripping solenoid 9 - 52 9.1.12 Sealing and locking device lock 2 2 1 remove seal 1 NOTE Keep sealing wire as short as possible. Catalog No. 9 - 53 ETU745 - ETU748 WLTUSC55 ETU776 WLTUSC76 9.2 CubicleBUS Modules 9.2.1 System architecture Close/Open X6 - AO: Analog output module - BDA: Breaker Data Adapter; adapter for parameterizing, operating and monitoring the circuit breaker via any input/output unit with browser features; connection via test socket of trip unit or RJ45 to the last external cmodule - BSS: Breaker Status Sensor for acquisition of signals about the circuit breaker status (always combined with COM15/16 module) - c: Internal bus system for interconnection of circuit breaker components and for connection of external c modules - COM15/16: Communications module for interconnection of cand PROFIBUS-DP / MODBUS (always combined with Breaker Status Sensor / BSS) - DI: Digital input modules for potential-free input signals - "0/1"-signals; a maximum of two modules with different configurations can be connected - DO: Digital output modules with 6 outputs each; a maximum of three modules with different configurations or versions can be connected - ETU: Electronic trip unit - Metering: Measurement function or measurement function PLUS - PROFIBUS-DP/MODBUS: Field bus for connection of automation components - Protection: Protection module - VT: Voltage transformer - ZSI: Module for zone selective interlocking, must always be connected as the first module NOTE The basic functions of the electronic trip units do not require an auxiliary power supply. To use extended functions of the trip units requiring data exchange via the c, an external 24 V DC voltage supply must be connected. (page 9-93) 9 - 54 9.2.2 Internal modules 9.2.2.1 Breaker Status Sensor (BSS) For collecting circuit breaker status information via signaling switches and transmitting these data to the c. Trip Unit UVR or 2nd shunt trip c 0206-3 Springs Signaling switches for BSS (5) (6) (7) (8) (4) (3) (2) (1) (1) (2) (3) (4) (5) (6) (7) (8) 9 - 55 Spring charge signaling switch Signaling switch OPEN / CLOSE position S44 Ready-to-close signaling switch S45 Bell Alarm signaling switch Signaling switch for connected position S46 Signaling switch for test position S47 Signaling switch for disconnected position S48 Signaling switch S43 UVR or 2nd shunt trip Installing the BSS module DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Always discharge the closing spring before removing any covers or the front panel of the circuit breaker (page 24-2). Move the circuit breaker into the withdrawn position in the cradle (page 24-3) and Removing front panel (page 24-4). Replace the trip unit (page 9-49). 1 3 2 4 (1) (2) (3) (4) (5) (6) BSS Actuating shaft BSS Ready-to-close indicator Drive shaft Carrier 9 - 56 Attaching signaling switch S43 to the 2nd shunt trip / UVR (1) (2) UVR / 2nd shunt trip: signaling switch S 43 (3) (4) (1) (2) (3) (4) See-saw Signaling switch Guide Groove Attaching signaling switch S45 to the ETU carriage (1) (1) 9 - 57 black wiring S45 Connecting BSS module The first cconnection leads to the secondary disconnect block X8. The second cconnection is made according to the circuit breaker equipment. Circuit diagrams (page 8-1) (1) (2) (3) ETU745 - 776 without metering function ETU745 - 776 with metering function X51-X52 External conducted cubicle bus link does only exist in release 1. release 2 uses an internal link 9.2.2.2 COM15 module Interface adapter for: - converting csignals to PROFIBUS-DP signals and vice-versa - for draw-out circuit breakers: detecting the circuit breaker position in the cradle with auxiliary signaling switches S46, S47 and S48, and emitting the corresponding signals to the cand the PROFIBUS-DP. - providing special functions via additional inputs and outputs (e.g. to control the circuit breaker and for parameterization) 9 - 58 Overview (1) (2) (3) (4) (5) (6) Connection terminals for additional inputs and outputs to provide special functions SUB-D plug, 9-pole, for PROFIBUS-DP connection cLED PROFIBUS-DP LED Connecting cables to hand plug X8 c connection for connecting external cmodules or for the terminating resistor Indications LED PROFIBUS-DP c 9 - 59 Indication Significance off No voltage at COM15 green PROFIBUS-DP communication red no PROFIBUS-DP communication with master class 1 activ off No c modules found green ccommunication with master class 1 activ green flashing no connection to ETU or metering function red cfault Fitting COM15 module on the cradle DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN circuit breaker (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle q (page 24-3) X7 1 v2 2 COM15 module S48 S47 S46 S46, S47 and S48: Signaling switches for detecting the circuit breaker position in the cradle and transfer to PROFIBUS-DP and c (page 8-1) Attaching the position indicating module to the withdrawable circuit breaker For Frame I, S, H, L-Class and frame size II S, L-class 1 Spring-loaded pin 3 Mounting base 2 Dummy block 9 - 60 For frame size II C-class and frame size III L, C-class: 3 2 1 4 2 x M4x8 PZ 3 Fitting COM15 module on the fixed-mounted breaker COM15 module 3 Mounting base 1 3,2 Nm 28 lb-in 2 3 x Plastite RX-PT 8-16x12 PZ 2 (1) (2) (3) 9 - 61 COM15 module Mounting base 3x Plastite RX-PT 8-16x12 Connecting wires Circuit diagrams (page 8-1) 3,0 x 0,6 1/8" 0,5 Nm 4 lb-in (1) (2) (3) Hand plug X8 Connecting cable to first external CublicleBUS module or terminating resistor Connecting cable to hand plug X8 Designation Assignment Terminal X8-1 c- X8.1 X8-2 c+ X8.2 X8-3 24 V DC + X8.3 X8-4 24 V DC GND X8.4 NOTE If no external cmodules are connected to the COM15 module, the terminating resistor has to be plugged into the cterminal. Absence of the terminating resistor can cause errors and potentially loss of communications. Connections for additional inputs and outputs 9 - 62 9.2.2.3 COM16 module Interface adapter for: - converting csignals to MODBUS signals and vice-versa - for draw-out circuit breakers: detecting the circuit breaker position in the cradle with the signaling switches S46, S47 and S48, and emitting corresponding signals on the cand the MODBUS. - providing special functions via additional inputs and outputs (e.g. to control the circuit breaker and for parameterization) Overview (1) (2) (3) (4) (5) (6) Connection terminals for additional inputs and outputs to provide special functions SUB-D plug, 9-pole, for MODBUS connection cLED MODBUS LED Connecting cables to hand plug X8 cconnection for connecting external cmodules or for the terminating resistor Indicators LED MODBUS c Indication Significance off No voltage at COM16 green MODBUS communication operating red no MODBUS communication (timeout) off No cmodules found green ccommunication operating green flashing cparticipant found, but no connection to ETU or metering function red cfault - For installation and connection of the COM15 module, please refer to installation and connection of the COM15 module (page 9-58) 9 - 63 MODBUS interface The COM16 module is equipped with a 2-wire RS485 interface. The MODBUS connector is a 9-pin female Sub-D connector with the following pinout: Pin 1 COMMON 5 Transceiver Terminal 1, V1 voltage 9 Transceiver Terminal 0, V0 voltage 2-4, 6-8 Not connected The cable shielding must be connected to the circuit breaker's protective grounding to prevent EMF disturbances being channeled into the module. Write Enable input The COM16 Module is equipped with an input that must be activated to allow the module to accept remote control commands as well as remote parameterization. When this input is not active, the module will reject all incoming packets that would normally change the state of an output (open/close circuit breaker) or change protective parameters. Normal polling and communication of data are not affected. The following commands are blocked if the Write Enable input is inactive: - opening/closing circuit breaker resetting after a trip Changing any protective function parameters and extended protective function parameters changing any communications parameter (e.g. address) changing any parameter of the metering function (e.g. demand period length) resetting any diagnostic or service-related counter or indicator setting/resetting outputs of the digital output modules The following commands are always allowed, independent of the state of the Write Enable input: - changing and setting the trigger settings of the waveform capture function reading the contents of the waveform buffer changing alarm and setpoint function settings changing any of the customer-changeable text strings resetting the min/max log setting/resetting the "Free Output" of the COM16 module setting system time 9 - 64 MODBUS Functionality Transmission Protocol The COM16 module operates in the RTU transmission mode. ASCII transmission mode is not supported. Overview of supported Functions The COM16 module provides the following MODBUS function codes for accessing the data contained in the WL circuit breaker. 9 - 65 FC Name Description 02: Read Discrete Inputs Reads the state of the Bits in the Status Register 01: Read Coils Reads the state of multiple Control Bits and Extra Flags 05: Write Single Coil Sets the state of a single Control Bit or Extra Flag 15: Write Multiple Coils Sets the state of multiple Control Bits and Extra Flags 04: Read Input Registers Reads the Basic Data Registers. Three Basic Types (1, 2 and 3) are supported. 03: Read Holding Registers Reads a complete data set. 16: Write Multiple Registers Writes a complete data set. 07: Read Exception Status Reads the state of eight Exception Status bits 08: Diagnostics Function provides a method for checking the communication between the master and the slave 11: Get Comm Event Counter Returns a status word and an event count from the communications event counter 12: Get Comm Event Log Returns a status word, event count, message count, and a field of event bytes MODBUS Communication settings For MODBUS communication, the following settings must be made in the COM16 module: baud rate, serial transmission configuration, MODBUS address. MODBUS Slave Address The MODBUS communication address range of the COM16 module is 1 through 126. MODBUS address 0 is used as a broadcast address in MODBUS systems. MODBUS address 0xF1(hex) is defined as a broadcast address for COM16 modules. The MODBUS slave address is assigned to data point 5 and may be changed by writing a new address value to high-byte of register 40962 (0xA002). If the COM16 module receives an invalid slave address value, the invalid value will be ignored. Baud Rate Baud rate settings of 1200, 2400, 4800, 9600 and 19200 are supported. 19200 baud is the default setting. The baud rate is assigned to data point 427 and may be changed by writing a new baud rate value to high-byte of register 40984 (0xA022). The following numbers are used to identify the selected baud rate. If the COM16 module receives an invalid baud rate, the invalid baud rate will be ignored. Number Baud rate 0 1200 1 2400 2 4800 3 9600 4 19200 Parity Parity settings of "No Parity", "Odd Parity" and "Even Parity" are supported. "Even Parity" is the default setting. The parity is assigned to data point 428 and may be changed by writing a new parity value to the low-byte of register 40994 (0xA022). The following numbers are used to identify the selected parity. If the COM16 module receives an invalid parity, the invalid parity will be ignored. Number Parity 0 No Parity 1 Odd Parity 2 Even Parity Auto configuration of baud rate and parity The factory settings for baud rate and parity are 19200 baud and "Even Parity". These settings may be changed either by writing from the master to data points 427 and 428 in register 40994 (0xA022) or via the auto configuration process. The auto configuration process only occurs when the supply voltage is switched on. When the supply voltage is switched on, the COM16 module monitors the bus activity. If the COM16 module detects bus activity but cannot receive any valid data, the auto configuration process is started. The module cycles through all combinations of baud rate and parity until it finds the combination which allows it to receive valid data. This combination is then saved and the auto configuration process ended. If the COM16 module does not find a combination that allows it to receive valid data after cycling through all combinations, it will adopt the original settings for baud rate and parity, and the auto configuration process will be ended. The time required to complete the auto configuration process can be several seconds depending on: - Baud rate How often the master transmits a telegram The length of the messages transmitted by the master The number of tests required to detect a valid baud rate/parity combination 9 - 66 Changing the communication parameters The communication parameters of the COM16 module can be changed by writing the required parameters (baud rate, serial configuration and MODBUS communication address) in data set 160. Register Address Dataset 160 - communication parameters Address: A000 hex, Registers: 39, Access: Read / Write High/ Low Data point Source WL Source VL1 Source VL2 Format Length (Bit) Scaling Header; value 0x00 00 00 00 - COM16 COM11 COM21 - 32 - LOW Reserved - - - - - 8 - 0xA003 HIGH MODBUS address 5 COM16 COM11 COM21 unsign ed char 8 0 40964 0xA004 LOW Basic type of MODBUS data transfer 6 COM16 COM11 COM21 Hex 2 - 40964 0xA004 HIGH Reserved - - - - - 8 - 40965 0xA005 - Data in the cyclic profile of MODBUS 7 COM16 COM11 COM21 Format (7) 224 - 40979 0xA013 - Reserved - - - - - 48 - 40982 0xA016 - IP address of the BDA/BDA PLUS 10 BDA - - Format (10) 40 - 40985 0xA019 LOW MODBUS transmission rate (baud rate) 427 COM16 COM11 COM21 Format (427) 8 - 40985 0xA019 HIGH Parity 428 COM16 COM11 COM21 Format (428) 8 - 40986 0xA01A - - - - - - 144 - 40995 0xA023 LOW Property byte (parity) 428 COM16 COM11 COM21 PB 8 - 40995 0xA023 HIGH Property byte (MODBUS transmission rate (baud rate)) 427 COM16 COM11 COM21 PB 8 - 40996 0xA024 LOW Reserved - - - - PB 8 - 40996 0xA024 HIGH Property byte (MODBUS address) 5 COM16 COM11 COM21 PB 8 - 40997 0xA025 LOW Property byte (basic type of MODBUS data transfer) 6 COM16 COM11 COM21 PB 8 - 40997 0xA025 HIGH Reserved - - - - PB 8 - 40998 0xA026 LOW Property byte (data in the cyclic profile of MODBUS) 7 COM16 COM11 COM21 PB 8 - 40998 0xA026 HIGH Reserved - - - - PB 8 - 40999 0xA027 LOW Property byte (IP address of the BDA/BDA PLUS) - BDA - - PB 8 - dec hex 40961 0xA001 - 40963 0xA003 40963 9 - 67 Description Reserved MODBUS function codes In addition to the MODBUS function codes of the COM16 module, described on page 9-64, the following definitions of the Status Register, Control Bits, Extra Flags, Basic Types and Exception Status Bits apply to the COM16 module. Status Register The Status Register provides WL status information to the MODBUS master. The Status Register is accessed using the following functions: - 02 Read Input Status Discretes - 04 Read Input Registers Bit number WL 0, 1 Circuit breaker position 00 = disconnected position 01 = connected position 10 = test position 11 = circuit breaker not present 2, 3 Circuit breaker status 00 = not ready 01 = circuit breaker open 10 = circuit breaker closed 11 = circuit breaker tripped 4 Circuit Breaker is ready to close 5 Undervoltage release 6 Closing spring charged 7 Overload warning 8 Setpoints active 9 Warning(s) active 10 MODBUS "Write enable" input active 11 User input 12, 13, 14 15 Trip 000 = no trip 001 = overload trip 010 = instantaneous short-circuit trip 011 = short time delayed short-circuit trip 100 = ground-fault trip 101 = trip caused by extended protective function 110 = N conductor trip Load shedding 9 - 68 Control Bits and Extra Flags Control Bits and Extra Flags make it possible for the MODBUS master to control various WL functions. The Control Bits and Extra Flags are accessed using the following functions: - 01 Read Coils - 05 Write Single Coil - 15 Write Multiple Coils Bit number Control Bits Extra Flags 9 - 69 WL 0, 1 Breaker open / close 00 = no action 01 = open circuit breaker 10 = close circuit breaker 11 = no action 2 clear reason for trip 3 Not used 4 User output 0 = User output Off 1 = User output On 5 Not used 6 Not used 7 Not used 8, 9 not used 10 Clear log book 11 Clear all min/max values 12 Clear temperature min/max values 13 Not used 14 Clear maintainance counters 15 Synchronize system clock at a rising edge Sets the time to xx:30:00:00 Basic Data Types Basic data types 1, 2 and 3 are supported. Basic data type 1 is the default setting. Basic data type 1 consists of 7 registers, basic data type 2 consists of 13 registers and Basic data type 3 consists of 22 registers. Basic data is accessed using the function: 04 Read Input Registers - Reads the Basic Data including the Status Register Basic Data Type 1 Registers and Default Data Points Register Byte Name Default Data Point - WL 1 0, 1 Status Register WL status bits 2 2, 3 Data Block 1 Phase L1 current 3 4, 5 Data Block 2 Phase L2 current 4 6, 7 Data Block 3 Phase L3 current 5 8, 9 Data Block 4 Current in phase under highest load 6 LOW 10 Block 1 property byte Property byte of phase L1 current 6 HIGH 11 Block 2 property byte Property byte of phase L2 current 7 LOW 12 Block 3 property byte Property byte of phase L3 current 7 HIGH 13 Block 4 property byte Property byte of max current in phase under highest load 9 - 70 Basic Data Type 2 Registers and Default Data Points Register Byte Name Default Data Point - WL 1 0, 1 Status Register WL status bits 2 2, 3 Data Block 1 Phase L1 current 3 4, 5 Data Block 2 Phase L2 current 4 6, 7 Data Block 3 Phase L3 current 5 8, 9 Data Block 4 Current in phase under highest load 6 10, 11 Data Block 5 Current in neutral conductor 7 12, 13 Data Block 6 Average phase-to-phase voltage 8 14, 15 Data Block 7 Average power factors of 3 phases 9 16, 17 Data Block 8 Total active energy of 3 phasesa) 10 LOW 18 Block 1 property byte Property byte of phase L1 current 10 HIGH 19 Block 2 property byte Property byte of phase L2 current 11 LOW 20 Block 3 property byte Property byte of phase L3 current 11 HIGH 21 Block 4 property byte Property byte of current in phase under highest load 12 LOW 22 Block 5 property byte Property byte of current in neutral conductor 12 HIGH 23 Block 6 property byte Property byte of average phase-to-phase voltage 13 LOW 24 Block 7 property byte Property byte of average power factors of 3 phases 13 HIGH 25 Block 8 property byte Property byte of total active energy of 3 phases a) Only 2 bytes of the 4 byte data point will be communicated (range: 0 - 65535 MWh) 9 - 71 Basic Data Type 3 Registers and Default Data Points Register Byte Name Default Data Point - WL 1 0, 1 Status Register WL status bits 2 2, 3 Data Block 1 Phase L1 current 3 4, 5 Data Block 2 Phase L2 current 4 6, 7 Data Block 3 Phase L3 current 5 8, 9 Data Block 4 Current in phase under highest load 6 10, 11 Data Block 5 Current in neutral conductor 7 12, 13 Data Block 6 Phase-to-phase voltage L1 to L2 8 14, 15 Data Block 7 Phase-to-phase voltage L2 to L3 9 16, 17 Data Block 8 Phase-to-phase voltage L3 to L1 10 18, 19 Data Block 9 Phase-to-neutral voltage L1 11 20, 21 Data Block 10 Phase-to-neutral voltage L2 12 22, 23 Data Block 11 Phase-to-neutral voltage L3 13 24, 25 Data Block 12 Average power factor of 3 phases a) 14 26, 27 Data Block 13 Total active energy of 3 phases* 15 28, 29 Data Block 14 Total apparent power of 3 phases 16 30 Block 1 property byte Property byte of phase L1 current 31 Block 2 property byte Property byte of phase L2 current 32 Block 3 property byte Property byte of phase L3 current 33 Block 4 property byte Property byte of current in phase under highest load 34 Block 5 property byte Property byte of current in neutral conductor 35 Block 6 property byte Property byte of phase-to-phase voltage L1 to L2 36 Block 7 property byte Property byte of phase-to-phase voltage L2 to L3 37 Block 8 property byte Property byte of phase-to-phase voltage L3 to L1 38 Block 9 property byte Property byte of phase-to-neutral voltage L1 39 Block 10 property byte Property byte of phase-to-neutral voltage L2 40 Block 11 property byte Property byte of phase-to-neutral voltage L3 41 Block 12 property byte Property byte of average power factors of 3 phases 42 Block 13 property byte Property byte of total active energy of 3 phasesa) 43 Block 14 property byte Property byte of total apparent power of 3 phases 17 18 19 20 21 22 a) Only 2 bytes of the 4 byte data point will be communicated (range: 0 - 65535 MWh) 9 - 72 Exception Status Bits The Exception Status Bits are accessed using the following functions: 07 Read Exception Status - Reads the state of the Exception Status Bits Bit Description 0 Excessive breaker contact wear 1 Communication with trip unit OK 2 COM16 is OK 3-7 Reserved Further information about the application of these inputs and outputs is given in the "WL MODBUS Communication Manual" WL Low Voltage Power Circuit Breaker catalog. Catalog number Catalog No. WL Breaker Configuration Software POWERCONFIG 9.2.2.4 Metering function PLUS Trip units ETU745 - ETU776 can be equipped with a metering function PLUS. This, however, requires external voltage transformers providing a three-phase metering voltage. NOTICE High voltages may damage the MeteringPLUS module. The secondary voltage of the external voltage transformers must not exceed 150 V AC RMS or 300 V AC peak value. In addition to the values for the currents, the metering function PLUS provides data on voltages, powers, energy values, power factors and frequency via the cfor further processing. 9 - 73 These data can be shown on the display of the trip units, transmitted to the PROFIBUS-DP via the COM15 module or to the MODBUS via the COM16 module and transferred to the outputs of external cmodules. Based on these data, conclusions can be drawn about the condition of the power system. Measured parameter Accuracy1) Range Currents IL1, IL2, IL3, IN 30 - 8000 A 1 % of measurement range Earth-fault current Ig (measurement with external earth-fault transformer) 100 - 1200 5 % of measurement range 15 - 130 V 130 - 1150 V 5 % of read value 1 % of measurement range 10 - 75 V 75 - 700 V 5 % of read value 1 % of measurement range 15 - 130 V 130 - 1150 V 5 % of read value 1 % of measurement range 10 - 75 V 75 - 700 V 5 % of read value 1 % of measurement range Apparent power SL1, SL2, SL3 13 - 8000 kVA 2 % of measurement range 2 % vom Messbereich Total apparent power 13 - 24000 kVA 2 % of measurement range Line-to-line voltages UL12, UL23, UL31 Line-to-N-line voltages UL1N, UL2N, UL3N Present average of line-to-line voltages UavgD Present average of Line-to-N-line voltages UavgY -8000 - +8000 kW 2 % of apparent power (P.F.> 0.6) Total active power -24000 - +24000 kW 2 % of apparent power (P.F.> 0,6) Reactive power QL1, QL2, QL3 -6400 - +6400 kVar 4 % of apparent power -20000 - +20000 kVar 4 % of apparent power Active power PL1, PL2, PL3 Total reactive power Power factors cosL1, cos L2, cos L3, -0,6 - 1 - +0.6 -0.6 - 1 - +0,6 0.04 0,04 Power factor total -0.6 - 1 - +0.6 -0,6 - 1 - +0,6 0.04 0,04 Long term average of currents IL1, IL2, IL3 30 - 8000 A 1 % of measurement range Long term average of 3-phase current 30 - 8000 A 1 % of measurement range Long term average of active power in L1, L2, L3 13 - 8000 kW 2 % of apparent power (P.F. > 0.6) Long term average of active power 3-phase 13 - 8000 kW 2 % of measurement range Long term average of apparent power in L1, L2, L3 13 - 8000 kVA 2 % of measurement range Long term average of apparent power 3-phase 13 - 8000 kVA 2 % of measurement range Long term average of reactive power 3-phase -8000 - +8000 kVar 4 % of apparent power Energy consumed 1 - 10000 MWh 2% Energy delivered 1 - 10000 MWh 2% Reactive energy consumed 1 - 10000 MVarh 2% Reactive energy delivered 1 - 10000 MVarh 2% Frequency 15 - 40 Hz 40 - 70 Hz 70 - 440 Hz 0.1 Hz 0,1 Hz Distortion factor of current and voltage 2 - 100 % 2 % of measurement range up to 29th harmonic Phase unbalance of current and voltage2) 2 - 150 % 1 % of displayed value 1) 2) The given measured value tolerances are valid for one year based on an average operating temperature of 25 C. After this period, deviations may occur. The given tolerances for measured values for which the measured voltage is consumed when being determined are only valid if the voltage measurement is carried out with an accuracy of 0.5 %. ANSI definition: Ratio of the largest difference between the phases and the average of all 3 phases. 9 - 74 Extended metering functions The metering function PLUS is used to implement extended protective functions beyond the functionality of the trip units. Parameter Range Delay Undervoltage 100 - 1100 V 0 - 15 sec. Overvoltage 200 - 1200 V 0 - 15 sec. Active power in normal direction 1 - 12000 kW 0 - 15 sec. Active power in reverse direction 1 - 12000 kW 0 - 15 sec. Overfrequency 40 - 70 Hz 0 - 15 sec. Underfrequency 40 - 70 Hz 0 - 15 sec. Phase current unbalance 1) 5 - 50% 0 - 15 sec. Phase voltage unbalance 1) 5 - 50% 0 - 15 sec. Pickup THD current 3 - 50% 5 - 15 sec. Pickup THD voltage 3 - 50% 5 - 15 sec. Phase rotation 1) ANSI definition: Ratio of the largest difference between the phases and the average of all 3 phases. If one of these parameters exceeds or falls below its default settings, the trip unit is tripped after the adjusted delay via the c. The parameters can be adjusted via: - 9 - 75 the test socket with the BDA the PROFIBUS-DP the MODBUS the graphical display (ETU776) Setpoints The setpoint function can be used to signal or record special events in the power system. Parameter Range Delay Phase overcurrent 30 - 10000 A 0 - 255 sec. Ground overcurrent 30 - 12000 A 0 - 255 sec. Neutral overcurrent 30 - 10000 A 0 - 255 sec. 5 - 50% 0 - 255 sec. current demand 30 - 10000 A 0 - 255 sec. undervoltage 100 - 1100 V 0 - 255 sec. 5 - 50% 0 - 255 sec. overvoltage 100 - 1100 V 0 - 255 sec. overpower in normal direction 1 - 12000 kW 0 - 255 sec. KW reverse 1 - 12000 kW 0 - 255 sec. KW demand 1 - 12000 kW 0 - 255 sec. KVA demand 1 - 12000 kVA 0 - 255 sec. KVAR demand 1 - 12000 kVar 0 - 255 sec. KVAR consumed 1 - 12000 kVar 0 - 255 sec. KVAR delivered 1 - 12000 kVar 0 - 255 sec. KVA 1 - 12000 kVA 0 - 255 sec. overfrequency 40 - 70 Hz 0 - 255 sec. underfrequency 40 - 70 Hz 0 - 255 sec. underpower factor (PF) -0.001 - 0.001 0 - 255 sec. overpower factor (PF) -0.001 - 0.001 0 - 255 sec. current THD 3 - 50% 0 - 255 sec. voltage THD 3 - 50% 0 - 255 sec. crest factor 1 - 2.55 0 - 255 sec. form factor 1 - 2.55 0 - 255 sec. phase current unbalance* phase voltage unbalance* 1) ANSI definition: Ratio of the largest difference between the phases and the average of all 3 phases. If one of these parameters exceeds or falls below its default settings, the trip unit is tripped after the adjusted delay via the c. The parameters can be adjusted via: - the test socket with the BDA the PROFIBUS-DP the MODBUS the graphical display (ETU776). 9 - 76 Additional functions The metering function Plus offers two additional functions: - two independent waveform buffers - harmonic analysis The two independent waveform buffers can be used to analyze the current and voltage values at the time of the event. If the waveform buffers are programmed to "recording" (standard setting), continuous recording takes place until a previously defined event occurs. Then, the recording is stopped, and the current or voltage waveforms at the time of the event can be observed on a visual display (graphical LCD, laptop or PC). The time window is one second; the resolution is 1649 values/second. Settings for waveform buffers Currents IL1, IL2, IL3, ILN, Ig Voltages UL1, UL2, UL3 The waveform buffers can also be started or stopped individually via the communication channels (PROFIBUS-DP, MODBUS, c). The waveform buffers can be parameterized via: - 9 - 77 the test socket with the BDA the PROFIBUS-DP the MODBUS the graphical display (ETU776) 9.2.2.5 Connecting the voltage transformer DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. The metering module ("MeterPLUS Function") can be set to expect 3W or 4W (LL/LG) connections and will adjust the amplitude and phase of the signal as necessary. The parameters on the trip unit must be set as follows: (1) (2) (3) VT Primary voltage (240 V/480 V/600 V) VT Secondary voltage (100 V/110 V/120 V) VT Connection (Wye / LG, Delta / LL) Three VTs must be used at all times. All three VTs must be rated for the rated LL voltage (e.g. 480 V) and can have either 100 V / 110 V or 120 V secondary rated voltage. 3:3W System: Delta (L-L) Connection primary bus configuration VT primary connection Primary Secondary (assuming 480V LL) L1 VL-L to X8.5 VL-L V1-2 120V (480V) to X8.6 L2 V2-3 208V L3 Metering VT Settings: Delta/Wye : Delta VT Primary: 480 (for instance) VT Secondary: 120 (for instance) to X8.7 V3-1 to X8.8 3:4W System: Wye (L-N, L-G) Connection primary bus configuration VT primary connection Primary (assuming 480V LL) (VL-L)/ 3 (277V) (VL-L)/ 3 Secondary to X8.5 L1 120V/ 3 (69V) to X8.6 L2 VL-L (480V) L3 Metering VT Settings: Delta/Wye : Wye VT Primary: 480 (for instance) VT Secondary: 120 (for instance) 120V to X8.7 69V LN to X8.8 Note: Required primary and secondary overcurrent protection (fusing) not shown for clarity. 9 - 78 9.2.3 External CublicleBUS modules 9.2.3.1 General Application External cmodules are used for communication between the WL circuit breaker and the secondary equipment in the circuit breaker panel. They are provided to control analog indications, transmit the circuit breaker tripping status and the reason for tripping and to read additional control signals. Furthermore, with one of these modules it is possible to implement a zone selective interlocking for short-circuit protection. (1) (2) (3) (4) (5) (6) (7) (8) Indicator LED Rotary coding switch Connection X3: c Connection X5: inputs or outputs Connection X4: inputs or outputs Connection X2: c Connection X1: c "TEST" button Installation The external cmodules are snapped onto a standard 35-mm DIN rail inside the switchgear panel. It must be ensured that the length of the connecting cable of the first module to the circuit breaker does not exceed 6.5 ft. Connection setup The cmodules must only be connected to each other and to the circuit breaker using the pre-assembled cables supplied. These cables are also used for the 24 V DC voltage supply of the cmodules. If more than two cmodules are connected, the 24 V DC voltage supply must be fed via a separate cable from module to module. Only one cmodule can be connected directly to a circuit breaker. Further modules must be connected from module to module. Radial cables are not permissible. If provided, the ZSI module is always the first module, and must be connected directly to the circuit breaker. The ccable must be connected to the X3 connection of the last module with a 120 0.5 W resistor. The total length of the ccables must not exceed 30 ft from auxiliary current plug X8 of the circuit breaker to the last cmodule. 9 - 79 Circuit breaker without COM15/16 module (1) (2) (3) (4) (5) Connecting cable to 1st module (4-core, cores X8-4/X3-1 twisted with X8-3/X3-4 and X8-1/X3-2 twisted with X8-2/X3-3) Connecting cables between modules cmodules Terminating resistor 120 0.5 W Cable connection for 24 V DC voltage supply 9 - 80 Circuit breaker with COM15/16 module (1) (2) (3) (4) (5) (6) (7) 9 - 81 Only if there are more than 2 cmodules: Connecting cables between the X8 and the first c module for 24 V DC voltage supply Connecting cables between cmodules cmodules Terminating resistor 120 0.5 W Connecting cables between the modules for 24 V DC voltage supply Connecting cable between COM15/16 and the first cmodule (with two RJ45 plugs) COM15 / COM16 Setting principle The value 0.1 is set if the rotary coding switch is positioned in this segment 3 x 0.5 1/8" Indicators LED DEVICE c Indication Significance green Module in operation yellow Module in test mode red Module faulty green Connection to cavailable off No connection to c yellow Option set or signal available off Option not set or no signal available All other LEDs Module test NOTICE Unintended operation of the circuit breaker and other devices. The test circuits of this unit emit real output signals that may cause operation of the circuit breaker and other devices that may be connected to the associated cmodule. During the test, the circuit breaker and downstream devices shoud be isolated to prevent unintended device operations. The correct operation of the cmodules can be verified in the test mode. The test mode is started by pushing the "TEST" button once. All outputs and the associated LEDs are switched off. The color of the DEVICE LED changes from green to yellow. Testing inputs and outputs Pressing the "TEST" Button Reaction Twice quickly - LED 1 on - Input/output 1 on After a pause, twice quickly - LED 1 and input/output 1 off, LED 2 on - Input/output 2 on After a pause, twice quickly - LED 2 and input/output 2 off, LED 3 on - Input/output 3 on ... ... After a pause, twice quickly - LED 5 and input/output 5 off, LED 6 on - Input/output 6 on After a pause, once Input/output 6 off, all LEDs on Once Test mode starts again, all inputs/outputs and the associated LEDs are off Pushing the "TEST" button several times in quick succession when an LED is on switches the respective input/output on and off alternately. 9 - 82 Testing LEDs only Pushing the "Test" button several times with pauses in between switches the LEDs on successively. After the last LED, all LEDs are switched on. Repeated pushing the "TEST" button starts the test mode again, and all LEDs, inputs and outputs are switched off. Quitting the test mode Do not press the "TEST" button for approximately 30 sec. If all LEDs are on, the test mode will already be quitted after about 4 sec. 9.2.3.2 ZSI module Function When circuit breakers are combined with ZSI modules, a short-circuit occurring in systems with several grading levels can be precisely localized. For this purpose, all circuit breakers are interconnected via their ZSI modules. When a short-circuit or ground-fault occurs, each circuit breaker affected by the short-circuit current queries its downstream circuit breaker to determine whether the short-circuit is present in the next downstream device. Only the circuit breaker nearest the short-circuit, in the upstream direction, is tripped. If "S" or "S+G" is selected on the ZSI module and the circuit breaker does not receive a blocking signal ZSI-IN - from its downstream circuit breaker, in the event of short-circuit, the delay time setting for the short-circuit trip is set to 50 ms. If a short-circuit is detected, a blocking signal - ZSI-OUT - will be sent to the upstream circuit breakers. The trip takes place after 50 ms. It typically delays between 80 and 90 ms. If "S" or "S+G" is selected on the ZSI module and the circuit breaker does not receive a blocking signal - ZSI-IN - from its downstream circuit breaker, in the event of ground-fault, the delay time setting for the ground-fault trip is set to 100 ms. If a ground-fault is detected, a blocking signal - ZSI-OUT - will be sent to the upstream circuit breakers. The trip takes place after 100 ms. It typically delays between 130 and 140 ms. After a maximum delay time of 3 s, a given blocking signal ZSI-OUT is terminated. Installation (page 9-79) Connection Connection setup (page 9-79) Only one ZSI module can be connected per circuit breaker. If the ZSI module is used together with other cmodules, the ZSI module must be connected directly to the COM15 module or hand plug X8. 9 - 83 Terminal assignment Terminal Connection TIE BRKR Only for bus couplers; Allows complete ZSI functionality in systems with buscouplers so that various energy flow directions can be taken into account. ZSI IN ZSI modules of lower-level circuit breakers ZSI OUT ZSI modules of higher-level circuit breakers MV OUT Signal to the medium-voltage level Observe the specified polarity when connecting: plus to plus and minus to minus. The maximum wire length of the ZSI wiring is 400 m for a wire diameter of AWG 18 (2-wire conductor). For ZSI connections between only WL circuit breakers, wire lengths of up to 1000 m are permissible if the conductor diameter is increased to AWG 13. The ZSI connections must consist of twisted pair cables or shielded cables. The ZSI module allows connection of up to: - 8 circuit breakers at the ZSI IN input and - 20 circuit breakers at the ZSI OUT output 9 - 84 Settings Setting principle (page 9-82) Settings ZSI module OFF ZSI function deactivated S ZSI module effective for short-time delayed short-circuits only G ZSI-module effective for ground-fault protection only S+G ZSI-module effective for short-time delayed short-circuits and ground-fault protection TEST Test position for checking the ZSI functionality Indicators (page 9-82) Testing (page 9-82) In addition, a special test feature of the ZSI module (rotary coding switch in TEST position) makes it possible to check the ZSI wiring and the operativeness of the ZSI electronics. 9.2.3.3 Digital input module Function With the digital input module, up to 6 additional binary signals (DC 24 V) can be connected to the system. These input signals are transferred to the PROFIBUS-DP / MODBUS via the c, and can be evaluated accordingly. For trip units ETU776, it is possible as an alternative to use an input signal of this type at input 1 to switch between two different sets of protection parameters (if provided). Installation (page 9-79) Connection Connection setup (page 9-79) A maximum of two digital input modules can be operated on the c at the same time - 1 module with the "BUS INPUT" setting - 1 module with the "PARAMETER SWITCH" setting 9 - 85 Terminal assignment BUS Input Terminal assignment of digital input module X4 Inputs 4-6 X5 Inputs 1-3 Settings Setting principle (page 9-82) Settings of digital input module BUS INPUT Inputs 1-6 are active. If there is an input signal present, a corresponding message is transmitted to the BUS via the COM15/16 module. PARAMETER SWITCH Input 1 is used for parameter switchover. All other inputs have no function. No input signal (LED 1 not lights up): Parameter set A activated Input signal available (LED 1 lights up): Parameter set B activated NOTE The parameter switchover query can be overruled by a query via the BUS communication, the BDA or the graphical display. Indicators (page 9-82) Testing (page 9-82) 9 - 86 9.2.3.4 Digital output modules Function With digital output modules, up to 6 signals can be transmitted. If the trip unit signals an event, the corresponding LED lights up after the adjusted delay time has elapsed, and the module sets a signal at the corresponding output. Digital output modules are available in the following versions: - with rotary coding switch and relay outputs - configurable and with relay outputs Installation (page 9-79) Connection Connection setup (page 9-79) If a combination of digital output modules with rotary switch and configurable digital outputs is to be connected to a circuit breaker, the following can be connected per circuit breaker: - 1 digital output module with rotary coding switch and output assignment 1 - 1 digital output module with rotary coding switch and output assignment 2 - 1 configurable digital output module 9 - 87 Terminal assignment Digital output modules with rotary coding switch (1) (1) (2) (3) (2) (3) Output assignment 1 Delay time setting Output assignment 2 Configurable digital output modules Terminal assignment of digital output module X4 Outputs 4-6 X5 Outputs 1-3 9 - 88 Digital output modules with relay output provide changeover contacts at their outputs. Current carrying capacity of the outputs 250 V AC, 12 A 25 V DC, 12 A Relay output Settings Digital output modules with rotary coding switch Setting principle (page 9-82) Terminal assignment 1 (TRIP) L Signaling contact overload tripping S Signaling contact short-time delayed short-circuit tripping I Signaling contact instantaneous short-circuit tripping G Signaling contact ground-fault tripping G ALARM Signaling contact ground-fault alarm N Signaling contact neutral conductor tripping Delay time setting TRIP 0 - 2 sec. ALARM 0 - 2 sec. The delay time setting determines how long a signal of the trip unit must be present until the corresponding LED lights up and the signal is set at the corresponding output. Output assignment 2 (ALARM) PRE TRIP Signaling contact leading signal overload tripping (delay time 0 sec.) TU ERR Signaling contact ETU error LD SHED Signaling contact load shedding (delay time 0 sec.) LD REST Signaling contact load restore (delay time 0 sec.) TEMP Signaling contact temperature alarm I UNBAL Signaling contact phase unbalance current Configurable digital output modules Configurable digital output modules can be adjusted via: - the test socket of the trip unit with the BDA - the PROFIBUS-DP / MODBUS. Indicators (page 9-82) Testing (page 9-82) 9 - 89 9.2.3.5 Analog output module Function With the analog output module, analog measured values can be transmitted, which can be shown on the cubicle door by means of moving-coil instruments. A total of 4 outputs is available. For the output signal, two different formats can be selected: - 4 - 20 mA, output via terminal strip X5 - 0 - 10 V, output via terminal strip X4 Installation (page 9-79) Connection Connection setup (page 9-79) A maximum of 2 analog output modules can be connected; the rotary coding switches of these modules must, however, have different settings. Terminal assignment Settings Setting principle (page 9-82) The measured values to be signaled are adjusted using the rotary switch. They are always present on the two terminal strips in the corresponding format. The following values are available at the outputs: Output assignment Position AO 1 AO 2 AO 3 AO 4 I IL1 IL2 IL3 IN U UL12 UL23 UL31 UL1N P PL1 PL2 PL3 Stotal f f ULLavg Ptotal P.F.avg P.F. P.F.L1 P.F.L2 P.F.L3 Phase unbalance current in% 9 - 90 Indicators (page 9-82) Testing (page 9-82) 9.2.3.6 Catalog numbers Each cmodule is supplied with a 0.2 m (7.8") connecting cable for the cconnection. 9 - 91 c module Catalog No. ZSI module WLZSIMD Analog output module WLANLGCUB Digital output module with relay output WLRLYCUB Digital output module with relay output, parameterizable WLRLYCCUB Digital input module WLDGNCUB ccable (1 m) WLCBUSCABLE1 ccable (2 m) WLCBUSCABLE2 ccable (0.2 m) WLCBUSCABLE02 ccable (4 m) WLCBUSCABLE4 ccable (9 m) WLCBUSCABLE9 9.2.4 External sensor for neutral conductor (1) (6) (2) (5) (3) (4) (1) (2) (3) (4) (5) (6) Version for copper bar on switchgear side Mounting bracket Screw M6 with washers and nut Version with copper connectors Connector P2 Connector P1 Dimension drawings (page 7-30) Terminal assignment Remove bridge X8.9 - X8.10 External N sensor Main conducting path 0377_nu 1 2 3 4 5 6 P1 S1 X8.9 S2 X8.10 P2 This arrangement ensures the same direction of the current flow for the circuit breaker and the external neutral sensor. 9 - 92 9.3 External voltage supply The basic protective functions (L, S, I, & G) of the electronic trip units do not require an auxiliary power supply. To use the extended functions of trip units ETU745 - 776 requiring data exchange via the c, an external 24 V DC (class 2) voltage supply must be connected. Connection Version A: Connection to hand plug X8 (preferred version) Version B: Connection to any cmodule Requirements The external voltage supply with 24 V DC must fulfill at least the requirements of UL class 2. To supply power to a circuit breaker equipped with the maximum possible number of external cmodules, one of the Siemens power supply units listed below can be used. If a second circuit breaker is to be supplied, a second power supply unit is also required. The external power supply used for electronic components must not be used to supply the motor-operated mechanism. When using voltage supply units from other manufacturers, the following conditions must be fulfilled: - Primary-switched-mode power supply unit - 24 V DC, 3 % - Current rating: 2.5 A per circuit breaker maximum possible number of external cmodules or 3.8 A for two circuit breakers with the maximum possible number of external cmodules. Catalog number 9 - 93 Power supply Catalog No. 120/230 V AC / 24 V DC, 2.5 A WLSITOP25 120/230 V AC / 24 V DC, 3.8 A WLSITOP1 9.4 Breaker Data Adapter 9.4.1 Application The Breaker Data Adapter (BDA) makes it possible to parameterize, operate and monitor the circuit breaker without additional software by means of a browser-capable input/output device (e.g. a laptop). This is possible for circuit breakers equipped with trip units of the types ETU745 - 776. On trip units ETU745 and ETU748, however, the basic protective functions cannot be parameterized. These are adjusted solely by using the rotary coding switches. Communication with the electronic system of the circuit breaker takes place via the c. For this purpose, the BDA can be optionally connected to the test socket of the trip unit, or - in case of longer stationary operation - to the last cmodule, and snapped onto a 35-mm DIN rail. The required connection cables are supplied with the unit. 9.4.2 View 9.4.3 Indicators LED DEVICE c 9.4.4 Indication Significance green BDA in operation yellow BDA in test mode red BDA faulty green cconnected available red Check connections and c modules off No connection to c Connection versions The BDA can, depending on the application, be connected in different ways. NOTE Connect the BDA to the trip unit prior to turning on the power supply. 9 - 94 Offline mode All circuit breaker parameters can be entered and saved on a laptop, for example, without the need to communicate with the circuit breaker. When the connection to the circuit breaker is established, these data can be transmitted and the circuit breaker can be parameterized automatically. (1) (2) (3) (4) 9 - 95 Browser-capable input/output device (e.g. laptop computer) BDA or BDA PLUS 24 V DC voltage supply (class 2) RS232 interface Local operation The circuit breaker is parameterized directly on site. The parameter settings can also be saved on the laptop computer and the diagnostic data of the circuit breaker can be read. (1) (2) (3) (4) (5) (6) Browser-capable input/output unit (e.g. laptop computer) 24 V DC voltage supply if no voltage supply is provided via the c BDA or BDA PLUS Test socket of the trip unit (40-pole) Connection cable SUB-D, 15-pole (BDA) to SUB-D, 40-pole (test socket of trip unit) RS232 interface SUB-D, 9-pole Remote access via modem The circuit breaker data, including parameterization, can be accessed from any remote location. (1) (2) (3) (4) (5) (6) Browser-capable input/output device (e.g. laptop computer) Modem BDA PLUS External c-module Connection cable SUB-D, 15-pole (BDA) to RJ45 plug (c connection) RS232 interface SUB-D, 9-pole 9 - 96 Remote access via Ethernet The circuit breaker data, including parameterization, are accessed via customer-side Ethernet. This connection type is only possible in the BDA PLUS version. (1) (2) (3) (4) (5) (6) 9.4.5 Browser-capable input/output device (e.g. laptop computer) Ethernet cable BDA PLUS External cmodule Connection cable SUB-D, 15-pole (BDA) to RJ45 plug (c connection) Ethernet connection Voltage supply The BDA requires a voltage supply of 24 V DC. This can be applied via: - a separate, standard plug-type power supply unit or - the CublicleBUS with the external voltage supply of the circuit breaker electronics. 9.4.6 Catalog numbers Catalog No. BDA PLUS 9 - 97 WLBDAP 9.5 Handheld test device The handheld test device is used to check that the trip unit, the energy and current transformers, the F5 tripping solenoid and the measured value display are functioning properly. 9.5.1 View s Test Device for WL Electronic Trip Units (3) (1) CURRENT TRANSFORMER TEST L1 L2 L3 N G ETU STATUS START POWER = O.K. TRIP TEST S (2) I N Input 110 ... 125 VAC, 50/60 Hz Cat. No. WLTS, Rev. 0.0 (1) (2) (3) 3WL9111-1AT31-0AA0 0556_nu G LED for operating voltage indication Control buttons 6 LEDs to show test results 9.5.2 Preparations - Open and isolate the circuit breaker Document the trip unit setting values of the overload release Setting value IR = 1.0 In Interrupt external voltage supply for the electronic system, if present Remove the cap from test socket X25 of the trip unit NOTICE Circuit breaker may trip. If the trip settings are changed while the breaker is closed (and under load) the breaker may trip. Adjust parameters only when the circuit breaker is in the open position. 9 - 98 9.5.3 Connecting NOTE Observe the connecting sequence. Malfunctions and incorrect test results may result if the sequence is not observed. 2 1 3 (1) (2) (3) (4) 9.5.4 Test socket of the trip unit 40-pole ribbon cable with plugs Voltage supply Handheld test device Voltage supply The handheld test device is supplied by a 110 - 125 V AC network. 9.5.5 Operation The status test begins after the voltage supply has been connected. The various components and parameters of the trip unit are queried. If the status test has been completed successfully, the "ETU STATUS" LED will light up continuously. If it has not been completed successfully, the "ETU STATUS" LED will flash. The type of flashing indicates what type of fault is present. Indicator Significance 1 x briefly, pause Handheld test device defective 2 x briefly, pause Trip unit defective 4 x briefly, pause - Parameters not set correctly Current sensor not properly connected Wrong rating plug Missing rating plug 5 x briefly, pause - Tripping solenoid F5 not properly connected - Solenoid defective The status test can be repeated any time by pressing the "START" button for at least three seconds. It is also possible to test a trip unit that is already activated, i.e. one that is supplied by an external voltage source. However, it must be taken into account that the "ETU STATUS" LED may briefly flash twice when the status test result is displayed, even if there have not been any faults. As a precaution, the status test should be repeated without external voltage supply. 9 - 99 Testing the current and energy sensors To test the current sensors and energy transducers, press the "START" button. START A lit-up LED confirms the proper operation of the corresponding sensor/converter. If an LED flashes, the corresponding sensor/converter is not present, not properly connected is defective. Testing the tripping function To test the tripping function, press one of the buttons "L", "S", "I", "N" or "G". L S I N G Long-time delayed tripping Test If the test is successful, the "ETU STATUS" LED will light up a solid green. If errors are detected (the trip unit malfunctions), the "ETU STATUS" LED will flash. Count the number of flashes to determine the fault (all fault codes are listed on page 9-104). L 1 2 3 Charge the circuit breaker Close the circuit breaker Press the [L] button The circuit breaker will trip after the set long-time delay time, plus approx. 2 seconds processing time, has elapsed. If the test device has completed a test without faults, the "ETU STATUS" LED will light up continuously green. If a fault is detected, the LED will flash. The type of flashing indicates what type of fault is present (fault codes are listed on page 9-104). Short-time delayed tripping Test The short-time delayed short-circuit tripping function and the trip unit circuitry can be tested using the test device. S 1 2 3 Charge the circuit breaker Close the circuit breaker Press the [S] button The circuit breaker will trip after the set short-time delay time, plus approx. 2 seconds processing time, has elapsed. If the test device has completed a test without faults, the "ETU STATUS" LED will light up continuously green. If a fault is detected, the LED will flash. The type of flashing indicates what type of fault is present (fault codes are listed on page 9-104). Instantaneous tripping test The instantaneous tripping function and the trip unit circuitry can be tested using the test device. I 1 2 3 Charge the circuit breaker Close the circuit breaker Press the [I] button The circuit breaker will trip after approx. 2 seconds processing time. If the test device has completed a test without faults, the "ETU STATUS" LED will light up continuously green. If a fault is detected, the LED will flash. The type of flashing indicates what type of fault is present (fault codes are listed on page 9-104). 9 - 100 Neutral conductor tripping test The long-time delayed short-circuit tripping function for the neutral conductor and the trip unit circuitry for ETU types 727-776 can be tested using the test device.The current sensor for the neutral conductor must be attached (page 9-92) and the "Neutral conductor protection" function must be switched on (page 9-14). N 1 2 3 Charge the circuit breaker Close the circuit breaker Press the [N] button The circuit breaker will trip after the set long-time delay time, plus approx. 2 seconds processing time, has elapsed. If the test device has completed a test without faults, the "ETU STATUS" LED will light up continuously green. If a fault is detected, the LED will flash. The type of flashing indicates what type of fault is present (fault codes are listed on page 9-104). Ground-fault tripping test The ground-fault tripping function and the trip unit circuitry of ETU types 745-746 with an installed ground-fault protection module (with tripping function WLGFM48 or WLGFM76) can be tested using the test device. The current sensor for the neutral conductor (page 9-92) and/or the iron-core ground-fault sensor (page 9-45) must be attached. G 1 2 3 Charge the circuit breaker Close the circuit breaker Press the [G] button The circuit breaker will trip after the set ground-fault tripping delay time, plus approx. 2 seconds processing time, has elapsed. If the test device has completed a test without faults, the "ETU STATUS" LED will light up continuously green. If a fault is detected, the LED will flash. The type of flashing indicates what type of fault is present (fault codes are listed on page 9-104). Testing the measured value display This function works by inputting a signal into the trip unit. The signal is displayed as a single-phase current on the trip unit's display, and the current's measured value is also transmitted via the communication interface to the connected CublicleBUS modules and the connected MODBUS / PROFIBUS-DP networks. This feature only works with an integrated display (WLETU745 with WLLCD748, WLETU748 with WLLCD748, WLETU776), and communicates test signals when a communication interface and/or a CublicleBUS module is installed on the trip unit.This feature does not work when a MeteringPLUS (WLMETERP) module is installed. I 1 2 + N Connect 24 V DC to power the trip unit. Press the [I] and [N] buttons simultaneously A single-phase test signal is fed into the trip unit, which simulates a single-phase load current for the ETU. The local display, the connected communications and connected CublicleBUS modules output this current value. The test signal will specify the simulated value to the first phase for 30 seconds, before switching to the next phase. The cycle runs in the order L1, L2, L3, N, G. The test cycle is completed when all phases have been tested. Activation the trip unit To activate the trip unit, press the "N" and "G" buttons simultaneously. N + G The trip unit will remain activated until another button on the handheld test device (WLTS) is depressed. With this function, the "T.U.-Error"-LED can be checked if the status test had finished with the error "Trip unit defective". 9 - 101 9.5.6 Finishing - Restore the documented settings - Mount the cover on X25 9.5.7 Catalog numbers Catalog No. Handheld test device WLTS Replacement cables WLTSC 9 - 102 10 Reset the reclosing lockout and the Bell Alarm 10.1 Resetting the Bell Alarm Circuit breaker is tripped by trip unit Automatic reset Automatic reset of the maglatch F5 1 0077-01_u Tripping solenoid Signals Indicators Trip S24 X9.12 X9.14 2 Circuit breaker is immediately ready to close again, if closing spring is charged. X9.13 Reset Bell Alarm Electrical remote reset Option: Electrical remote reset of reclosing lockout and the Bell Alarm via a remote reset solenoid. (page 10-5) Manual reset 3 0053-06_u X8.13 S24 S13 X9.12 X9.14 Press Bell Alarm (red pin), until it latches F7 X8.14 X9.13 Reset S24 X9.12 4 X9.14 Bell Alarm Bell Alarm Reset X9.13 Tripped signal reset 10 - 1 Bell Alarm 10.2 Resetting the Bell Alarm with reclosing lockout (optional) WL circuit breakers are normally configured to be immediately ready to close again following a trip. With the automatic reset of the Bell Alarm, the tripping solenoid is automatic resetting after the trip unit has tripped. The circuit breaker is immediately ready to close again. For confirmation, the tripped indicator must be reset, either manually on the trip unit or via the remote reset solenoid. When the WL breaker is configured with option WLNOAUTRSET, the tripping coil must be manually reset before the circuit breaker is capable of closing. The following instruction details the resetting of the Bell Alarm, and the tripping coil. Circuit breaker is tripped by the trip unit 1 Signals Trip Indicators S24 X9.12 Bell Alarm X9.14 2 X9.13 Manual reset 3 Press Bell Alarm (red pin), until it latches Reset S24 X9.12 X9.14 0077-01_u F5 4 X9.13 Bell Alarm reset Tripping solenoid Bell Alarm Tripping solenoid and Bell Alarm are reset. Indicators 5 Circuit breaker is ready to close again if the closing spring is charged and no interlock is active. 10 - 2 10.3 Field Installation of a reclosing lockout To activate the Bell Alarm lockout, the automatic reset must be removed. The tripping solenoid, the tripped indicator and the tripped signal must be reset manually at the breaker. Reclosing of the circuit breaker is blocked until the trip indicator has been reset. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - 10 - 3 OPEN the circuit breaker and discharge the closing spring (page 24-2). Move the circuit breaker into the withdrawn position in the cradle (page 24-3). Remove front panel (page 24-4). Remove the trip unit (page 9-49). 10.3.1 Removing the automatic reset mechanism 1 0565-3 3 1 2 3 2 Remove lock washer Remove bolt Remove reset spring Then - Install trip unit (page 9-49) - Install front panel (page 24-4) 10 - 4 10.4 Installing the remote Bell Alarm reset NOTICE Can only be used with automatic reclosing lockout reset. The remote reset solenoid will otherwise be overloaded and damaged. 10.4.1 Mounting remote reset solenoid and cut-off switch DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - 10 - 5 OPEN the circuit breaker and discharge the closing spring (page 24-2). Move the circuit breaker into the withdrawn position in the cradle (page 24-3). Remove front panel (page 24-4). Remove the trip unit (page 9-49). Mounting electrical remote reset solenoid F7 NOTICE When routing the wires, care must be taken to ensure that wires are not damaged when reinstalling the ETU carriage. 2 01 -1 3 0191-3 PZ 1 91 0191-2 1 10.4.2 Connecting wires (page 8-1) Terminals X8.13 X8.14 3,0 x 0,6 1/8" 10 - 6 10.4.3 Function test 1 2 3 0053-06_u X8.13 S24 S13 X9.12 X9.14 F7 S24 X9.12 S24 S24 X9.14 X9.12 X9.14 X9.13 X8.14 X9.13 X9.13 Then - Install trip unit (page 9-49) - Install front panel (page 24-4) 10.4.4 Updating the options label NOTE After installing additional electrical components, add the following data and mark with a "x", using an indelible ink pen. Charging Motor Ready to Close Switch UVR Switch X5-1 (-) 240 VAC X6-13 (-) 240 VAC X9-1 (-) VAC X6-5 240 VAC X9-10 240 VAC X6-3 X6-11 X6-1 X6-9 240 VAC X5-2 (+) 250 VDC 1st Shunt Trip X6-14 (+) 250 VDC X9-2 (+) VDC X6-6 4A X9-11 3A X6-4 X6-12 X6-2 X6-10 5A Remote Close Coil 2nd Shunt Trip UVR Remote Reset 52a 1st Shunt Trip Switch 52a 1st Aux. SW. 52b 2nd Aux. SW. Bell Alarm X9-12 52b X6-7 (+) 120 VAC X5-11 (-) 120 VAC X8-13 (-) 120 VAC X9-7 240 VAC X5-5 X5-9 X5-3 X5-7 X6-8 (-) 125 VDC X5-12 (+) 125 VDC X8-14 (+) 125 VDC X9-8 3A X5-6 X5-10 X5-4 X5-8 Siemens Industry, Inc., Fort Worth, TX 76155 USA Assembled in USA 240 VAC , 10 A / 125 VDC , 0.5 A / 24 VDC , 3A X9-14 X9-13 0131_nu_fw Voltage Catalog No. 24 V DC WLRSET24 48 V DC WLRSET48 110 - 125 V AC / DC WLRSET120 208 - 250 V AC / DC WLRSET240 Electric Bell Alarm reset solenoid 10 - 7 11 Shunt Trip / Closing Coil / Undervoltage release 11.1 Overview Mounting locations (1) (2) (3) (4) (5) (6) (7) (1) (2) (3) (4) (5) (6) (7) 1st shunt trip F1 Signaling switch S22 Closing coil CC 2nd shunt trip F2 or undervoltage release (instantaneous) F3 or undervoltage release (time-delayed) F4 Signaling switch S23 or S43 Cut-off switch S14 for shunt trip 5% duty cycle Cut-off switch S15 for closing coil CC 5% duty cycle Shunt trips with 100% ED may be used as an electrical closing lockout. 11 - 1 11.2 Installing shunt trips, closing coils, and undervoltage devices DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) 1 2 3 Retaining bracket 11 - 2 4 Replace retaining bracket and screw down. 11.3 Installing optional signaling switches on shunt trips, closing coils, and undervoltage devices Signals the the operating status of the shunt trip, closing coil, or undervoltage device to the BSS. B A (1) (2) (3) 2 (4) (5) A B Snap in place Disassembly (1) (2) (3) (4) (5) See-saw Signaling switch Guide Groove Snap-fit 1 2 11.4 1 Disengage the snap-fit Pull out the signaling switch Setting delay times on undervoltage release Instantaneous release short-time delayed: td q 200 milliseconds instantaneous: td q 80 milliseconds J1 11 - 3 Time-delayed release 3 x 0,5 1/8" Delay time td: td = (0.2 ... 1.6 sec.) + 1.6 sec. S1 td = 0.2 ... 1.6 sec. 11.5 Field Installation of a cut-off switch for shunt trips and closing coils Does not apply to continuous duty devices. S14 pre-wired F1 11 - 4 a a S14 b CC F2 0136-07_nu S15 S15 A B C A Shunt trip with cut-off switch S14 B Closing coil with cut-off switch S15 C Combination of shunt trip and closing coil with combined cut-off switch S14/S15 11 - 5 11.6 Mechanical function test WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Shunt trip Closing coil Charge the closing spring manually (page 6-4) 1 2 Close circuit breaker (page 6-7) Armature Armature 3 0169-02_u CC Circuit breaker opens Circuit breaker closes Opening the circuit breaker (page 6-7) 5 11.7 0083_u 0083_u 4 Connecting wires Circuit diagrams (page 8-4) Terminals 3,0 x 0,6 1/8" 11 - 6 CC F1 F2, F3 F4 : X6.7 / X6.8 : X6.13 / X6.14 : X5.11 / X5.12 : X5.11 ... X5.14 S10 : X9.9 / X6.7 11.8 Final tasks - 11.9 Install front panel (page 24-4) Attach secondary disconnect blocks (page 5-31) Connect wires to secondary disconnect block (page 5-29) Move the draw-out circuit breaker into the test position (page 6-2) Ensure control voltage is connected Electrical function test NOTE Make sure that the closing coil with 5% operating time is only activated when the circuit breaker is ready for closing. Otherwise the closing coil will be damaged. Closing coil Undervoltage release Charge the closing spring (page 6-4) 1 0169-05_u CC 2 Actuate the closing coil Electrical Closed Remote activation 3 Remove control power to test undervoltage release. 0083_u 4 Circuit breaker closes 11 - 7 Shunt trip Undervoltage release Charge the closing spring (page 6-4) Closing the circuit breaker (page 6-7) 1 2 Actuate shunt trip Remote activation 3 Circuit breaker opens 0083_u 4 Remove control power to test undervoltage release. 11 - 8 11.10 Updating the options label NOTE After installing additional electrical components, mark with a "x", using an indelible ink pen. The voltage must also be noted in the box. Charging Motor Ready to Close Switch UVR Switch X5-1 (-) 240 VAC X6-13 (-) 240 VAC X9-1 (-) VAC X6-5 240 VAC X9-10 240 VAC X6-3 X6-11 X6-1 X6-9 240 VAC X5-2 (+) 250 VDC 1st Shunt Trip X6-14 (+) 250 VDC X9-2 (+) VDC X6-6 4A X9-11 3A X6-4 X6-12 X6-2 X6-10 5A Remote Close Coil 2nd Shunt Trip UVR Remote Reset 52a 1st Shunt Trip Switch 52a X6-7 (+) 120 VAC X5-11 (-) 120 VAC X8-13 (-) 120 VAC X9-7 240 VAC X5-5 X6-8 (-) 125 VDC X5-12 (+) 125 VDC X8-14 (+) 125 VDC X9-8 3A X5-6 Siemens Industry, Inc., Fort Worth, TX 76155 USA Assembled in USA 240 VAC , 1st Aux. SW. 52b 2nd Aux. SW. Bell Alarm X9-12 52b X5-9 X5-3 X5-10 X5-4 10 A / 125 VDC , X9-14 X5-7 X5-8 0.5 A / 24 VDC , 3A X9-13 0131_nu_fw Closing coil VAC 50/60 Hz VDC Catalog No. -- 24 WLRCS24 -- 48 WLRCS48 110-127 110-125 WLRCS120 208-240 220-250 WLRCS240 Closing coil Signaling switches Catalog No. Signaling switch for 1st shunt trip WLSTC Signaling switch for 2nd shunt trip or undervoltage release 1st Shunt Trip Shunt trip F1 with cut-off switch, opening time 40 ms Shunt trip F1 for continous energizing, opening time 80 ms WLUVRC VAC 50/60 Hz VDC Catalog No. -- 24 WLST24 -- 48 WLST48 110-127 110-125 WLST120 208-240 220-250 WLST240 - 24 WLSTCD24 - 48 WLSTCD48 120 125 WLSTCD120 240 250 WLSTCD240 11 - 9 2nd Shunt Trip or UVR VAC 50/60 Hz VDC Catalog No. -- 24 WLST24 -- 48 WLST48 110-127 110-125 WLST120 208-240 220-250 WLST240 -- 24 WLUV24 -- 48 WLUV48 110-127 110-125 WLUV120 208-240 220-250 WLUV240 -- 48 WLUVD48 110-127 110-125 WLUVD120 208-240 220-250 WLUVD240 Shunt trip F2 Undervoltage release F3 (instantaneous) Undervoltage release F4 (time-delayed) 11 - 10 12 Auxiliary and control switches (1) (2) (3) (4) (5) (6) (7) (8) (9) (1) (2) (3) (4) (5) (6) (7) (8) (9) Bell Alarm S24 Cut off switch for remote reset solenoid S13 (page 10-5) Signaling switch S22 for 1st shunt trip (page 11-3) Signaling switch for ready-to-close S20 Signaling switch S23 for 2nd shunt trip or under-voltage release (page 11-3) Contact position-driven auxiliary switch S1 Contact position-driven auxiliary switch S2 Contact position-driven auxiliary switch S4 Contact position-driven auxiliary switch S3 12 - 1 12.1 Installing internal auxiliary switches S1 - S4 DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) S1 S2 S3 S4 The connecting wires from the auxiliary switches must be connected to terminals X5 and X6 according to the wiring plan (page 8-2). Contact position-driven auxiliary switches 12 - 2 Catalog No. S1 + S2 (2 "a" + 2 "b" contacts) WLAS2 S1 + S2 + S3 + S4 (4 "a" + 4 "b" contacts) WLAS4 12.2 Installing the ready-to-close switch S20 DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Snap-in mounting S20 The connecting wires from the ready-to-close signaling switch must be connected to terminal X6 according to the wiring plan (page 8-2). Signaling switches Ready-to-close signaling switch S20 Catalog No. WLRTCS 12 - 3 12.3 Trip Signaling Switches DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - Remove trip unit (page 9-49) 12 - 4 12.3.1 Trip Signaling Switches S13, S24, and S26 NOTICE Over-tightening the mounting screws may deform the signaling switch and could lead to an incorrect indication of breaker status. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. (3) (2) (4) (1) PZ 1 0192-3 hand tighten (1) (2) (3) (4) S26 assembled with snap-in pins S13 snap in assembly S25 / S45 assembled with self-tapping screws S24 assembled with snap-in pins The connecting wires from the signaling switches must be connected to secondary disconnects X8 and X9 according to the wiring plan (page 8-2) and (page 8-6). Signaling switches Bell Alarm S24 (1 form C contact) Catalog No. WLBA 12 - 5 12.4 Control switches - Connecting wires (1) (1) (2) (3) (4) (2) (3) (4) Cut-off switch S13 for remote reset Cut-off switch S14 for shunt trip F1 (page 11-4) Cut-off switch S15 for closing coil CC (page 11-4) Motor disconnecting switch S12 (page 13-3) 12.5 Communication switches Signaling switches for BSS (page 9-55) 12.6 Connecting secondary wiring Circuit diagrams (page 8-4) 3,0 x 0,6 12.7 Updating the options label NOTE After installing additional components, mark the following data with a "x", using an indelible ink pen. Charging Motor Ready to Close Switch UVR Switch X5-1 (-) 240 VAC X6-13 (-) 240 VAC X9-1 (-) VAC X6-5 240 VAC X9-10 240 VAC X6-3 X6-11 X6-1 X6-9 240 VAC X5-2 (+) 250 VDC 1st Shunt Trip X6-14 (+) 250 VDC X9-2 (+) VDC X6-6 4A X9-11 3A X6-4 X6-12 X6-2 X6-10 5A Remote Close Coil 2nd Shunt Trip UVR Remote Reset 52a 1st Shunt Trip Switch 52a X6-7 (+) 120 VAC X5-11 (-) 120 VAC X8-13 (-) 120 VAC X9-7 240 VAC X5-5 X6-8 (-) 125 VDC X5-12 (+) 125 VDC X8-14 (+) 125 VDC X9-8 3A X5-6 Siemens Industry, Inc., Fort Worth, TX 76155 USA Assembled in USA 240 VAC , 1st Aux. SW. 52b 2nd Aux. SW. Bell Alarm X9-12 52b X5-9 X5-3 X5-10 X5-4 10 A / 125 VDC , X9-14 X5-7 X5-8 0.5 A / 24 VDC , 3A X9-13 0131_nu_fw 12 - 6 12.8 Mechanism Operated Contacts (MOC) The circuit breaker may be equipped with an external auxiliary switch assembly. These external auxiliary switches are known as Mechanism Operated Contacts. In short, the assembly is also referred to as the MOC. The MOC assembly is mounted within the circuit breaker compartment (cradle) and is connected to the main breaker-driveshaft via a coupler, which is added to the circuit breaker during the MOC installation. The circuit breaker, itself, may be optionally ordered with either no internal auxiliary switches, a set of four internal auxiliary switches (2 a + 2 b contacts), or eight internal auxiliary switches (4 a + 4 b contacts). With the addition of a MOC device, an additional eight auxiliary switches (4 a + 4 b contacts) may be added to a circuit breaker. Note referencing ANSI C37.100: "a" contact: A secondary contact that is open when the circuit breaker is open, and closed when the circuit breaker is closed "b" contact: A secondary contact that is closed when the circuit breaker is open, and open when the circuit breaker is closed (1) 0757_nu (2) (1) (2) Fixed-mounted circuit breaker Cradle 3 1 2 4 S53 3 1 a b 2 3 1 a b 4 2 S52 4 S51 3 1 a b a b 2 4 Attention: Four contact blocks must be installed for proper operation S50 Attention: Four contact blocks must be installed for proper operation (1) (2) (3) (4) (5) (1) MOC 4 signaling switches Driver for connected position Driver for test position Warning label (2) (5) (3) (4) 12 - 7 12.8.1 MOC Versions The MOC device may be ordered in two versions for drawout circuit breakers: The auxiliary contacts, in the "Connect Only" version of the MOC, only change state when the circuit breaker is opened/closed while it is in the "CONNECTED" position within the circuit breaker compartment. There are two distinct models of the "Connect Only" MOC, one for circuit breaker frame size 2 (WLMOCC) and a second for circuit breaker frame size 3 (WLMOCC3). The second version is known as the "Test and Connect" version. In the "Test and Connect" version, the auxiliary contacts change state when the circuit breaker is opened/closed while it is in the "TEST" or "CONNECTED" positions within the circuit breaker compartment. Like the "Connect Only" version, there are two distinct models of the "connect only" MOC, one for circuit breaker frame size 2 (WLMOC) and a second for circuit breaker frame size 3 (WLMOC3). 12.8.2 MOC Installation Instructions There are two MOC versions available: with and without a driver for the test position. The version with only one drive is generally used for fixed-mounted circuit breakers. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Remove circuit breaker from cradle (page 24-3) 12.8.2.1 Installing the coupler In order to interface the MOC assembly (mounted in the circuit breaker compartment), the circuit breaker must be outfitted with a coupler (see Figure 1). Figure 1 In order to install the coupler, the clear plastic plug in the sidewall of the circuit breaker (see Figure 2) must first be removed. Facing the breaker, the plug is on right sidewall. This is easily accomplished by levering with a small screwdriver. Figure 2 12 - 8 The coupler snaps onto the end of the steel mainshaft. The steel band should not be removed when installing the coupler. Also ensure that the coupler is oriented properly when installed. Figure 3 illustrates the proper installed orientation of a shaft extension (circuit breaker shown in the OPEN position), with the tampered flange facing the rear of the circuit breaker.. 0421-1_nu Figure 3 NOTE The tapered flange of the coupler must point towards the rear side of the circuit breaker. 12 - 9 12.8.2.2 Installing the MOC Baseplate Assembly The MOC baseplate assembly is secured to the circuit breaker compartment (cradle) by two tabs in the rear and two screws in the front. With the screws inserted from the inside of the cubicle, and the nuts and lockwashers on the outside, the nuts must be torqued to 71 lbin (8 Nm). 4 2 3 1 12.8.2.3 Mounting on fixed-mounted circuit breakers Size 5 2 8 Nm 71 lb-in 3 0758_nu 1 5 Size 5 8 Nm 71 lb-in 4 12 - 10 12.8.2.4 Removing the Contact Blocks NOTICE MOC Reliability May cause intermittent signaling. All four contact blocks, whether wired or not, must be installed into the MOC assembly to ensure reliable operation. The contact blocks must be removed in order to access the terminals for wiring. The contact blocks should be removed by applying a small amount of outward pressure with a thin blade screwdriver, in the area shown in Figure 6. Figure 6 NOTICE Contact block damage. May cause loss of signaling. Do not over-extend the feet of the contact block when reinstalling into the MOC assembly. 12 - 11 12.8.2.5 Wiring the Contact Blocks The contact blocks are designated (front of cradle to rear of cradle) S50, S51, S52, and S53. Each contact block contains one "a" and one "b" contact, with the terminal designations as shown below. Each terminal accepts a maximum of one wire, 14 AWG (or smaller), and shall be tightened to 7 lbin (0.8 Nm). 7 mm 1/4" Attention: Four contact blocks must be installed for proper operation S53 S52 S51 S50 3,0 x 0,6 1/8" 0,8 Nm 7 lb-in Attention: Four contact blocks must be installed for proper operation 3 1 2 3 1 a b 4 2 4 3 1 a b 2 4 3 1 a b a b 2 4 12.8.2.6 Installing the Contact Blocks NOTICE MOC Reliability May cause intermittent signaling. All four contact blocks, whether wired or not, must be installed into the MOC assembly to ensure reliable operation. The contact blocks must be firmly seated, with the feet of the contact block latched into the MOC assembly housing. If there is damage to the contact block assembly, a replacement contact block must be used. Replacement contact blocks may be purchased per catalog number WLMOCSWK (includes four replacement contact block assemblies). NOTICE Contact block damage. May cause loss of signaling. Do not over-extend the feet of the contact block when reinstalling into the MOC assembly. 12 - 12 12.8.2.7 Contact Ratings Maximum Current Voltage 12.8.3 Continuous Making Breaking 120 VAC 10 A 30 A 3A 240 VAC 10 A 30 A 3A 24 VDC 5A 1.1 A 1.1 A 48 VDC 5A 1.1 A 1.1 A 125 VDC 5A 1.1 A 1.1 A 250 VDC 5A 0.55 A 0.55 A Order numbers MOC Mechanism Operated Auxiliary Contacts, cradle-mounted, 4 NO + 4 NC, Test and connected position, for draw-out circuit breaker only, FS I and FS II Catalog No. WLMOC Mechanism Operated Auxiliary Contacts, cradle-mounted, 4 NO + 4 NC, Connected position only, for draw-out circuit breaker only, FS I and FS II WLMOCC Mechanism Operated Auxiliary Contacts, cradle-mounted, 4 NO + 4 NC, Test and connected position, for draw-out circuit breaker only, FS III WLMOC3 Mechanism Operated Auxiliary Contacts, cradle-mounted, 4 NO + 4 NC, Connected position only, for draw-out circuit breaker only, FS III WLMOCC3 Mechanism Operated Auxiliary Contacts, 4 NO + 4NC, for UL489 fixed-mounted circuit breaker only, FS I WLMOCUL1 Mechanism Operated Auxiliary Contacts, 4 NO + 4NC, for UL489 fixed-mounted circuit breaker only, FS II and FS III WLMOCUL 12 - 13 12.8.4 Combination of MOC and mutual mechanical interlocking module For the MOC to be combined and operated with the mutual mechanical interlocking module, a special clutch shaft must be used in place of the normal one. wrench size 13mm Longer side turned upwards (2) 12 Nm 105 lb-in (1) (1) (2) 12.8.5 Clutch shaft Lock-nut Mounting of MOC and mutual mechanical interlocking module on the cradle Size 5 8 Nm 71 lb-in MOC Side wall Mutual mechanical interlocking module Mount on fixed-mounted circuit breakers accordingly 12 - 14 13 Motor-operated mechanism For charging the closing spring automatically. It is switched on if the closing spring is discharged and control voltage is applied. The motor-operated mechanism is automatically switched off after the closing spring has been fully charged. 13.1 Installing the motor operator DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) 13 - 1 Mounting the motor on the operating shaft 3 1 2 Operating shaft of the manual operating mechanism Fixing the motor-operated mechanism & connecting wires 2 3 X5 3,0 x 0,6 Size 5 6 Nm 53 lb-in 13 - 2 Terminals X5.1 (-) X5.2 (+) 1 13.2 Optional motor disconnect switch on the front panel Option. For switching off the motor-operated mechanism control voltage. Supplied pre-assembled with one wire to be soldered . Installing motor disconnect switch S 12 Solder point 2 1 See-saw Connecting motor disconnect switch - Disconnect the brown wire from the motor-operated mechanism from terminal X5.2. - Connect wire X5-2 of the disconnect switch S12 to terminal X5.2. - Solder the brown wire from the motor-operated mechanism to terminal 4 of the disconnect switch S12. 13 - 3 Installing the selector knob 3 Front Panel 1 3,0 x 0,6 4 2 hand tighten Circuit diagrams (page 8-6) 13.3 Updating the options label NOTE After installing additional components, mark the following data with a "x", using an indelible ink pen. Charging Motor Ready to Close Switch UVR Switch X5-1 (-) 240 VAC X6-13 (-) 240 VAC X9-1 (-) VAC X6-5 240 VAC X9-10 240 VAC X6-3 X6-11 X6-1 X6-9 240 VAC X5-2 (+) 250 VDC 1st Shunt Trip X6-14 (+) 250 VDC X9-2 (+) VDC X6-6 4A X9-11 3A X6-4 X6-12 X6-2 X6-10 5A Remote Close Coil 2nd Shunt Trip UVR Remote Reset 52a 1st Shunt Trip Switch X6-7 (+) 120 VAC X5-11 (-) 120 VAC X8-13 (-) 120 X6-8 (-) 125 VDC X5-12 (+) 125 VDC X8-14 (+) 125 52a VAC X9-7 240 VAC X5-5 VDC X9-8 3A X5-6 Siemens Industry, Inc., Fort Worth, TX 76155 USA Assembled in USA 240 VAC , 1st Aux. SW. 52b 2nd Aux. SW. Bell Alarm X9-12 52b X5-9 X5-3 X5-10 X5-4 10 A / 125 VDC , X9-14 X5-7 X5-8 0.5 A / 24 VDC , 3A X9-13 0131_nu_fw Voltage Power consumption Catalog No. 24 V DC / 30 V DC 110 W WLELCMTR24 48 V DC / 60 V DC 120 W WLELCMTR48 110-127 V AC / 110-125 V DC 150 W WLELCMTR120 208-240 V AC / 220-250 V DC 130 W WLELCMTR240 24 V DC / 30 V DC 110 W WLELCMTR24S 48 V DC / 60 V DC 120 W WLELCMTR48S 110-127 V AC / 110-125 V DC 150 W WLELCMTR120S 208-240 V AC / 220-250 V DC 130 W WLELCMTR240S Motor-operated mechanism Motor-operated mechanism with motor disconnect switch 13 - 4 14 Indicators and operating elements There are additional indicators and operating elements available for field installation. 14.1 Limiting Access to OPEN/CLOSE Buttons This accessory kit allows the access to the OPEN and CLOSE buttons of the circuit breaker to be limited in any combination of the supplied components. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) 14 - 1 Supplied Components: 2x access blocks. Button is only accessible with a 1/8" pin (or smaller) (page 17-2) 2x sealing caps for sealing or attaching a padlock to block the button (page 15-21) Shield to prevent inadvertent operation Mounting plate (1) (2) (3) (4) NOTICE Damage to accessory. Over-tightening the mounting screws may strip the plastic frame, or damage components, rendering the accessory unusable. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. 3 OPEN PZ 1 hand tighten 2 1 CLOSE Catalog No. Catalog No. Locking set 14 - 2 WLLKKT 14.2 EMERGENCY OPEN button This accessory kit allows the installation of an EMERGENCY STOP mushroom pushbutton above the OPEN button. When depressed, the breaker is opened, and the breaker is held in a trip-free condition until the EMERGENCY STOP mushroom pushbutton is released. NOTICE Damage to accessory. Over-tightening the mounting screws may strip the plastic frame, or damage components, rendering the accessory unusable. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. Mechanical OFF 4 PZ 1 2 3 1 NOTE Install the EMERGENCY OFF mushroom pushbutton as shown (arrow on the right side). Catalog No. Catalog No. EMERGENCY OFF mushroom pushbutton WLEPEN 14 - 3 14.3 Operations counter The operations counter is incremented when the circuit breaker completes the charging cycle (manual or electrically operated). The mechanical operations counter can be installed only if the circuit breaker is equipped with a motor-operated mechanism. PZ 1 2 1 Knocking out the fields on the front panel knock out Front panel deburr Use a suitable base. Catalog No. Catalog No. Mechanical operations counter 14 - 4 WLNUMCNT 15 Locking devices 15.1 Key Locks Padlocking provisions (page 15-15) (1) (4) 0064-06-03_nu 3 *) (3) (2) *) 1 Location on FS I Key lock Manufacturer Application Breaker-mounted key lock KIRK SUPERIOR To activate the locking device, the circuit breaker must be opened. If the circuit breaker is closed, the locking device is blocked. The block is only effective when the key is removed. The key can only be removed in "OPEN" position. (page 15-2) KIRK SUPERIOR This cradle-mounted key lock prevents the closing of any circuit breaker installed in the cell which this lock is installed. Up to two independent Kirk or Superior key locks may be installed. To activate the lock, the circuit breaker must be open. If the circuit breaker is closed, the locking device is blocked. The block is only effective if the key is withdrawn. The key can only be removed in the "OPEN" position. (page 15-4) KIRK SUPERIOR Prevents drawing out of the racking handle. The circuit breaker is protected from being moved. The block is only effective when the key is removed. (page 15-9) Cradle-mounted key lock 2 3 Racking handle key lock 4 Bell Alarm and open fuse lockout key lock A lockable cover prevents resetting the Bell Alarm or open fuse lockout after the breaker trips. (page 15-14) 15 - 1 15.1.1 Breaker mounted key lock DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. When the key is removed, the circuit breaker is locked in the open position. - OPEN the circuit breaker and discharge the closing spring (page 24-2) Move the circuit breaker into the withdrawn position in the cradle (page 24-3) Remove front panel (page 24-4) Remove trip unit (page 9-49) Installing the locking mechanism For key lock types: KIRK, Superior (1) 2 1 NOTE When removing the screws (1), ensure that the cylinder does not slip out of the lock. If this happens, the lock cannot be re-assembled. 15 - 2 Knocking out the fields on the front panel knock out deburr Front panel Use a suitable base 5 3,0 x 0,6 3 2 Nm 18 lb-in 4 6 Then - Install trip unit (page 9-49) - Install front panel (page 24-4) Key lock Manufacturer Frame size KIRK Breaker mounted key lock Catalog No. WLLKOFFKRK I / II / III SUPERIOR WLLKOFFSUP 15 - 3 15.1.2 Cradle mounted key lock Not available for frame size I DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. When a key is removed, all circuit breakers racked into this cradle will be locked in the open position. 0636_nu - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) 15 - 4 Components of the key locking device 16 1 15 14 2 17 13 3 12 11 4 10 5 9 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) 8 Countersunk head screw M6 with belleville washer and nut M4 socket head cap screw Pre-assembled skid with guide Lever Spacer Kirk key, supplied separately including fixing screws Bolt with washer size 5 mm and clip (for 4 mm inner diameter groove; (for 4 mm groove; for FS II only) 3x M4 socket-head cap screws with lock waschers and nuts (for FS III only) Extension (for FS III only) Bolt with washer size 5 mm and clip (for 4 mm inner diameter groove; (for 4 mm groove; for FS II only) Ramp extension (for FS III only) 2x M4 flat-head screw (for FS III only) 7 (13) (14) (15) (16) (17) 6 Small attachment angle 2x M4 socket-head cap screws Spacer (for FS II only) Plastic slider (slotted) FS II / III: short slot FS II fused: long slot 2x spring lock washers 15 - 5 Installing the locks The way in which the locking module unit is installed is the same whether the unit consists of one lock or two locks. Do not use the spacer which may be provided with the key lock. The spacer (5) supplied with the mounting must be used in place of the spacers supplied with the lock. NOTE Attach the lever (4) to the KIRK / Superior locks (6) with the screws supplied with the lock. Attach the KIRK / Superior locks (6) together with the spacer (5) to the lock mechanism using the supplied screws. 1 0709-1 2 For FS III only: 15 - 6 Mounting the skid with guide to the base plate of the cradle 3 2 PZ 2 1 3,2 Nm 28 lb-in (1) (1) Base plate of the cradle Mounting the guide on the guide rail A PZ 2 B 3 3,2 Nm 28 lb-in 2 0711_nu 3 1 0713_nu 2 (1) 1 (1) (2) (3) 12 Nm 106 lb-in A B Frame size II Frame size III (1) (2) (3) Guide rail on left side Spacer for FS II must be mounted between angle and guide rail Attachment angle 15 - 7 Drilling the hole in the cubicle door (1) (2) (5) (1) (2) (3) (4) (5) (4) (3) Lower edge of door cutout Center of front panel Mounting surface of cradle Hole for first key cylinder Hole for second key cylinder (only if planned) Knocking out the fields on the front panel 2 1 1 2 Knock out the fields on the front panel using a suitable base Deburr the edges Then: - Install front panel (page 24-4) Function test - Check that the locking mechanism on the locks can rotate freely when the keys are turned. - Check that the spring turns the locking mechanism back to the starting position when it is unlocked. - By repeatedly drawing out and re-inserting the left guide rail, check that the carriage is also actuated and can move freely. Lock & Key for Cradle Mounting Manufacturer Catalog No. Kirk WLDLKRK Superior WLDSUP Kirk WLDLDKRK Superior WLDLDSUP Single lock Double lock Provision-only for Cradle Lock 15 - 8 Catalog No. Single Lock Provision WLDLPR Double Lock Provision WLDLDPR 15.1.3 Installing racking handle key lock When the key is removed, the circuit breaker's racking handle cannot be drawn out, meaning that the circuit breaker cannot be moved into another position. The key lock for the WL Fuse Carriage racking handle cannot be replaced. If damaged, please consult Technical Support. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) 15 - 9 0767 Pre-assembling the locking module Note The kit for FS I contains two adapter rings: a wide ring for KIRK locks, and a narrow ring for Superior locks. Installing FS I - Remove the circuit breaker from the cradle (page 24-3) Remove racking mechanism 1 2 3 4 Installing the lever 1 2 3 15 - 10 Mounting the locking module 2 3 (1) 1 Size 4 5 Nm 45 lb-in (1) Socket head cap screw M5 with washer and nut Installing the racking mechanism Install the racking mechanism in the opposite order to that in which it was removed. Knocking out the field on the front panel 1 1 2 2 Knock out the fields on the front panel using a suitable base Deburr the edges Then: - Install front panel (page 24-4) 15 - 11 Installing FS II and FS III 4 3 1 2 5 6 Size 4 5 Nm 45 lb-in 8 (1) 15 - 12 Socket head cap screw M5 with washer and nut 7 Knocking out the field on the front panel 1 0044-08 2 1 2 Knock out the fields on the front panel using a suitable base Deburr the edges Then: - Install front panel (page 24-4) Key lock Racking handle key lock Manufacturer Frame size Catalog No. I WLLKCLKRK1 II / III WLLKCLKRK I WLLKCLSUP1 II / III WLLKCLSUP1 KIRK SUPERIOR 15 - 13 15.1.4 Installing a Bell Alarm cover key lock When the key is removed, the cover cannot be removed and the Bell Alarm cannot be reset. 1 Knock out Push outwards, not inward. 2 3 (1) (2) (1) (2) Cover with safety lock Trip unit Locking 1 2 Withdraw key Key lock Bell Alarm and open fuse lockout key lock 15 - 14 Manufacturer Catalog No. ETU745 ... ETU748 WLTUSC55 ETU776 WLTUSC76 (1) 15.2 Padlocking provisions Key Locks (page 15-1) (1) (7) (2) (6) (3) (5) (4) Padlock locking device Application 1 Padlock locking bracket for "OPEN" The locking bracket for "OPEN" can be locked with up to 4 padlocks 1/4" diameter. The circuit breaker cannot be closed. 2 Shutter If the circuit breaker has been removed, the shutter can be locked with padlocks. (page 15-18) 3 Guide rails The guide rails can be locked with 2 padlocks so that they cannot be drawn out. The circuit breaker is either in the connected position or has been removed. It is not possible to insert a circuit breaker into the cradle. (page 15-19) 4 Racking handle Up to 3 padlocks can be used to prevent the racking handle being drawn out. The circuit breaker is then locked against being moved. (page 15-19) 5 Spring charging lever The spring charging lever can be locked with a padlock. This prevents manual charging of the closing spring. (page 15-19) 6 CLOSE Actuation of the CLOSE button can be prevented by locking the sealing cap with up to 3 padlocks. CLOSING via the "electrical CLOSE" button and remote closing remain possible. (page 15-21) 7 OPEN button Actuation of the OPEN button can be prevented by locking the sealing cap with up to 3 padlocks. Remote closing remains possible. 15 - 15 15.2.1 Padlock locking the breaker OPEN When the control gate is raised (step 1), the padlock provision can be extended, and padlocks installed. With padlocks installed, this circuit breaker cannot be closed. This provision will support up to four 1/4" diameter padlocks at one time. Locking with a padlock 2 3 1 Field installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - 15 - 16 OPEN the circuit breaker and discharge the closing spring (page 24-2) Move the circuit breaker into the withdrawn position in the cradle (page 24-3) Remove front panel (page 24-4) Install the control gate if not already present. Mounting padlock locking bracket 1 2 Latching plate in control gate 1 2 3 Then: - Install front panel (page 24-4) Padlock locking device Padlock locking breaker/OPEN Catalog No. WLLKNP 15 - 17 15.2.2 Padlock Locking device for shutter The shutter can be locked with padlocks. The padlocking provision can be fitted with up to 6 locks with 3/8" bracket diameter at once. Locking the shutter 2 1 2 2 click 3 2 0621_nu 0620_nu click NOTICE Damage to shutter. Applying too many padlocks may damage the shutter mechanism. The maximum total weight of the padlocks must not exceed 2.2 lbs (1 kg). Field installation of shutter (page 18-2) Opening the padlock locking device 1 0621-2_nu 2 To unlatch the padlock locking device, press the latching pins (left and right). 15 - 18 0620-2_nu 1 15.2.3 Padlock Locking device for guide rails The cradle is equipped with this locking device as standard. Up to two padlocks can be applied on each side. This prevents a circuit breaker from being inserted into an empty cradle. ; 5/16" / 8 mm 15.2.4 Padlock Locking device for racking handle Draw-out circuit breakers are equipped with this locking device as standard. Up to three padlocks can be applied to prevent the circuit breaker from being racked into another position. max. ; 8 mm 5/16" 1 3 2 15.2.5 Padlock Locking device for spring charging lever 1 max. ; 8 mm 5/16" 2 This locking device is an optional accessory for preventing manual charging of the circuit breaker closing spring mechanism. It does not prevent charging via the motor-operated mechanism. 15 - 19 Field installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - Open the circuit breaker and discharge the closing spring (page 24-2) - Remove front panel (page 24-4). 2 Knock out 1 Then: - Install front panel (page 24-4) Padlock Locking device Locking device for spring charging lever 15 - 20 Catalog No. WLHANDLC 15.2.6 CLOSE/OPEN padlock kit The manual closing and/or opening of this circuit breaker can be prevented, when this optional accessory is installed. The covers for the CLOSE button and the OPEN button can be fitted with up to three padlocks. With padlocks applied, it is still possible to electrically open and close this circuit breaker. 15 - 21 Field installation of sealing cover DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) See also Limiting Access to OPEN/CLOSE Buttons (page 14-1) NOTICE Damage to accessory. Over-tightening the mounting screws may strip the plastic frame, or damage components, rendering the accessory unusable. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. 3 OPEN 2 PZ 1 1 hand tighten CLOSE Then: - Install front panel (page 24-4) Padlock Locking device CLOSE/OPEN Padlock Kit 15 - 22 Catalog No. WLLKKT 16 (1) (2) (3) Sealing covers Sealing cover for CLOSE button Sealing cover for ETU (electronic trip unit) Sealing cover for OPEN button Sealing cover for CLOSE/OPEN buttons Field installation of sealing cover (page 15-22) Sealing cover for ETU (electronic trip unit) Sealing and locking device (page 9-53) 16 - 1 17 Mechanical interlocks 0064-06-04_nu (1) (2) (3) 1 Mechanical interlock Application Access block via CLOSE/OPEN button (locking set) The CLOSE/OPEN buttons are each covered in such a way that operation is only possible with a tool. (page 17-2) Cubicle door locking mechanism The cubicle door cannot be opened - if the fixed-mounted circuit breaker is closed (signal transmission through Bowden cable) or - if the circuit breaker is in the CONNECTED position. (page 17-3) 2 3 17 - 1 Interlock against racking when cubicle door is openNot available for FS I The racking handle cannot be withdrawn if the cubicle door is open. 17.1 Field installation of CLOSE / OPEN buttons blocking device This interlock limits access to the circuit breaker's manual CLOSE and/or OPEN buttons. The blocking device only allows access to the manual CLOSE and/or OPEN buttons via a small tool (1/8" diameter rod). DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) - Remove front panel (page 24-4) NOTICE Damage to accessory. Over-tightening the mounting screws may strip the plastic frame, or damage components, rendering the accessory unusable. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. 3 OPEN : 0.25" (6,35 mm) 2 PZ 1 1 hand tighten CLOSE Then: - Fit front panel (page 24-4) Mechanical interlock Order No. Access block via CLOSE button (locking set) WLLKKT 17 - 2 17.2 Cubicle door interlock This interlock prevents the cubicle door being opened if the circuit breaker is in the CONNECT position. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the maintenance position in the cradle (page 24-3) remove fixed-mounted circuit breaker - Remove front panel (page 24-4) 17 - 3 17.2.1 Installing the interlock mechanism to the cradle Fixed-mounted circuit breakers, FS I 3 3 (2) 2 1 0424 - 3 4 (1) -2 24 04 Size 4 mm 10 Nm 89 lb-in 0424-1 (1) (2) Latching lever Bowden cable setscrew 17 - 4 Fixed-mounted circuit breakers, FS II / III NOTICE Tighten self-tapping screws carefully. 2 2 PZ 3 5 Nm (1) (2) 17 - 5 Self-tapping screw Bowden cable 3 1 5 4 6 8 9 10 7 Adjusting the bowden cable: 1 2 3 Switch the circuit breaker on. FS I: Adjust the latching lever into the horizontal position (1) using the Bowden cable setscrew (2) (page 17-4). FS II/FS III: Adjust the latching lever into the straight position using the Bowden cable setscrew. Tighten the jam nut on the Bowden cable. Then: - Install front panel (page 24-4) 17 - 6 Draw-out circuit breaker 0740_nu 0742_nu Frame size I Mounting the latch at the cradle 3 2 0741_nu 1 Mounting the operator on the withdrawable circuit breaker 2 1 17 - 7 0743_nu 3 4 PZ 1 Frame size II / III 1 Engage tension spring 5 Engage tension spring 4 2 3 press + hold Then: - Insert the draw-out circuit breaker into the cradle and push it into the disconnected position (page 6-1) 17.2.2 Cubicle door interlock drill pattern Frame size I / Draw-out circuit breaker 0.47 [12] (1) 0.83 [21] (2) 9.88 [250] 0744_nu (3) 8.84 [224,5] (1) (2) (3) 3 holes O 7/32 inches Centerline of breaker front panel Mounting surface 17 - 8 04 24 -5 2.2 (56) 0.83 (21) 0.47 (12) Frame size I / Fixed-mounted circuit breaker 0.6 (15) Frame size II / III (1) (2) (3) (4) (5) (6) 17 - 9 Centerline of breaker front panel Door cutout for breaker front panel Inner side of cubicle door Hole for manual defeat O 7/32 inches Hole for manual defeat O 7/32 inches Drill this hole only if a manual defeat is required. Mounting surface 17.2.3 (1) (2) (3) (4) (5) 17.2.4 Installing catch on the cubicle door Clip with hole for manual defeat Inner side of cubicle door Catch 2 washers ISO7089 - 5 2 hex nuts M5 Function check Fixed mounted circuit breaker: - Close the cubicle door - Charge the closing spring - Close Draw-out circuit breaker: - Rack the circuit breaker into the connected position - Close the cubicle door Checking the manual defeat function: (1) (2) (3) (1) (2) (3) Lock position with circuit breaker closed Device in normal position Device in bypassed position Then: - Fixed-mounted circuit breaker: discharge the closing spring Mechanical interlock Frame size Order No. I WLDRLC1 II / III WLDRLC Door locking mechanism for cradle Door locking mechanism for fixedmounted breaker I WLLKOFFDRUL1 II / III WLLKOFFDRUL 17 - 10 17.3 Interlock to prevent racking with cubicle door open for FS II and FS III only DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - Open and discharge the closing spring (page 24-2) - Remove the circuit breaker from the cradle (page 24-3) Installing the mechanical interlock 1 Engage spring 4 Engage spring 2 Base plate of cradle 17 - 11 3 5 check Function check - Insert the circuit breaker into the cradle and push it into the disconnected position (page 6-1) - It must not be possible to draw out the racking handle Mechanical interlock Locking device against moving the circuit breaker if the cubicle door is open 17.4 Order No. WLDRLC5UL Coding between circuit breaker and cradle Draw-out circuit breakers and cradles are equiped with a factory coding. This coding ensures that only circuit breakers can be inserted whose blade contacts match the contacts of the cradle and whose instantaneous interrupting capacity and rated current correspond to those of the cradle. 17 - 12 18 Additional options for the cradle 18.1 Shutter The shutter is closed when the draw-out circuit breaker is in disconnect position or outside the cradle. The shutter can be fixed in a closed position and protected against unauthorized opening by means of padlocks. (page 15-18) (1) (2) (3) (4) (1) (2) (3) (4) Shutter Locking strap Locking device Actuator (1) (1) (2) (3) 18 - 1 (3) (2) Actuator mounting holes for: FS I, FS II class C, FS III class C, Actuator mounting holes for: FS II except class C, FS III except class C Four supports, only for the version listed under (2) (1) (3) (2) 18.1.1 Field installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. NOTICE Damage to accessory. Over-tightening the mounting screws may strip the plastic frame, or damage components, rendering the accessory unusable. Hardware shall be tightened carefully until the underside of the screw head is flush with the mounting surface. Pre-assembly T 30 3 Nm 28 lb-in (1) 0730_nu 1 (2) 2 6x (1) (2) 6 (8 for FS III) 4 (8 for FS III) washers 18 - 2 The following is the bill of material and tools required to install the shutter. (1) (4) (2) (5) (3) (6) Bill of material (1) (2) (3) Shutter subassembly (1 unit) Socket head cap screws M6x10 with locking coating (8 units) Shutter spring assemblies (4 units) Tools required (4) (5) (6) 18 - 3 1/4 inch slotted-type screwdriver 5 mm hex socket screwdriver Torque wrench with 5 mm hex socket bit (1) (1) Slider Assembly 1 2 3 Inspect the shutter mechanism. Check for shipping damage. Check that screws are tight and that the shutter mechanism moves freely when opening. (1) (1) Danger label 1 2 3 Position the shutter subassembly as shown. Notice that the danger label was placed on top. Carefully position shutter subassembly into cradle. Do not apply excessive force to the sliding mechanism. 18 - 4 2 1 1 1 2 Open the shutter mask. Slide the shutter subassembly to the end of the cradle; the stab tips are protruding. This creates space for installing the shutter spring assemblies. (6) (1) (5) (7) (3) (4) (8) (2) (1) (2) (3) (4) (5) (6) (7) (8) White "trumpet" Rear tines Rear spring bearing Center guide pin head Locating dowel pins Font tines Front spring bearing Center guide pin tail 1 18 - 5 Inspect the shutter spring assemblies to make sure that the two locating dowel pins (5) are present, that the front (7) and rear (3) tabs are at a 90 angle, that the front tines (6) are straight and parallel and that the center guide pin is firmly in place at the front and rear, as shown. If deficiencies are found, please contact SIEMENS Technical Support. 3 (1) (1) (2) (2) Front tines 2x locating dowel pins Installing the four shutter spring assemblies. 1 2 3 Place each spring assembly tine into cradle cut-outs, first by inserting rear tines. Twist the assembly towards the side wall of the cradle. Ensure that the locating dowel pins are seated, and front tines are inserted through the side wall. Do not apply excessive force to the white trumpets when inserting the tines through the side walls; if necessary, adjust tines using pliers. 2 0626-1 1 1 Spread the tines with a turning motion using the slotted-type screwdriver (clockwise and counterclockwise). Check that the shutter spring assembly is firmly in place. Attach all four shutter assemblies as described. Ensure that the tines are spread. 2 After installing and affixing the shutter spring assemblies, pull the shutter towards the front so that it is flush to the screw flanges of the white trumpet. 18 - 6 0626-2 Size 5 3,5 Nm 31 lb-in 1 Using a hexagon socket screwdriver (or equivalent), screw the shutter spring assemblies and the shutter subassembly together. When setting the screws in place, hold the shutter steady by its corners. Tighten the 8 screws with 31 lb-in 10%. 1 2 (1) (1) Torque wrench for tightening torque 31 lb-in 10% 1 2 18 - 7 Use a torque wrench to ensure that the eight screws are tightened to a torque of 31 lb-in 10%. Carry out a visual check that the shutter assembly installation looks sqare and 4 trumpets are parallel to side walls. Inspect for any crack or bending signs on the four corner of the shutter guides or shutter sliding windows. Inspect for and remove any loose parts, e.g. springs, screws etc. A B 1 Carry out a final check to ensure that the shutter is functioning. Open the shutter. Do not apply excessive force to sliding mechanism. 2 18.1.2 To avoid damage to Locking mechanism feature Fold back and latch the wings of the locking device to avoid damage of the shutter while inserting and in racking of the circuit breaker. Catalog numbers Interrupting class Shutter Frame size Catalog No. S, H, L I WLGSHUT1UL S, L II WLGSHUT2 C II WLGSHUTM2 L III WLGSHUT3 C III WLGSHUTM3 18 - 8 18.2 Truck Operated Contacts - TOC (Cradle Accessory) DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. The cradle can be retrofitted with truck-operated contacts (TOC). These optional accessories allow the customer to evaluate the position of the circuit breaker in the cradle. (1) (1) TOC signaling switch module Three versions are available (Order numbers (page 18-11). WLGSGSW111 (Version 1): - One form C contact for DISCONNECT position (S30) - One form C contact for TEST position (S31) - One form C contact for CONNECT position (S34) WLGSGSW321 (Version 2): - One form C contact for DISCONNECT position (S30) - Two form C contacts for TEST position (S31 and S32) - Three form C contacts for CONNECT position (S33, S34, and S35) WLGSGSW6 (Version 3): - Six form C contacts for CONNECT position (S30, S31, S32, S33, S34, and S35) Terminals The TOC accessory is equipped with an integrated terminal block. The integrated terminal block is of spring clamp design, and will accept 1xAWG 20 - 1xAWG 14 for each point 18 - 9 Circuit breaker postion and TOC contact state Switch Designation Terminal Points Circuit breaker position Disconnect position Test position Connected position 2 S30 1 4 2 S31 / S32 1 4 2 S33 / S34 / S35 1 4 TOC Config.3 S30 / S31 / S32 S33 / S34 /S35 2 1 4 Contact open Contact closed 18 - 10 Installation Depending on spatial conditions in the switchgear assembly, it may be necessary to wire the TOC prior to installation. 4 1 2 3 8 7 Then: - Insert the circuit breaker into the cradle and rack it into the connected position (page 6-1) Catalog numbers 18 - 11 TOC Version Catalog No. 1 CONNECT, 1 TEST, 1 DISCONNECT WLGSGSW111 3 CONNECT, 2 TEST, 1 DISCONNECT WLGSGSW321 6 CONNECT WLGSGSW6 19 Mechanical circuit breaker interlocking NOTE For proper function of the interlocking device, the following minimum prerequisites have to be met: 1 2 3 4 5 6 7 Bowden cables are to be laid out as straight and as unbowed as possible. Bending radii of the Bowden cables must exceed > 20" (500 mm). The total curvature of the Bowden cable must not exceed 540 degrees. When stacking interlocked circuit breakers vertically, the interlocking devices shall be vertically aligned with each other. Circuit breakers intended to be interlocked must be positioned so that Bowden cables of 6 ft or 15 ft (2 m or 4.5 m) length can be laid out per the above requirements 1-4. Before adjusting the interlocking device, the Bowden cables must be secured, e.g. using cable ties. Adequate spacing is required to provide enough room for adjustment of the interlocking device. Mechanical interlocking module (1) (2) (1) (2) 19.1 Cradle Fixed-mounted breaker Configurations A maximum of three circuit breakers may be interlocked. 19 - 1 19.1.1 General notes S1 S2 S3 (2) (1) (3) (4) (5) (6) (1) (2) (3) (4) (5) (6) Output 1 Holes with press nut for socket head cap screw M6 with washer for the configuration of the mechanical circuit breaker interlocking Non-interchangeable brackets Input 1 Input 2 Output 2 In the following configuration instructions, the following designations apply: A1 : Output signal 1 E1 : Input signal 1 S1 : Circuit breaker 1 For example, in order to couple the output signal 1 of circuit breaker 1 with the input signal 2 of circuit breaker 2, the abbreviation S1 A1 - S2 E2 is used. The states of the circuit breaker are shown at the front panel: Circuit breaker closed Circuit breaker open and not ready to close (interlocked) Circuit breaker open and ready to close (not interlocked) 19 - 2 19.1.2 Mechanical interlocking two sources (open transition) The two sources are interlocked to prevent paralleling (open transition). Example Possible circuit breaker states S1 S2 S2 S1 Description: A circuit breaker can be closed only if the other is open. Materials required: Each circuit breaker has an interlocking module and a Bowden cable. Order no. (page 19-3) Connections of Bowden cables: 1st Bowden cable: S1 A1 - S2 E1 2nd Bowden cable: S2 A1 - S1 E1 19 - 3 19.1.3 Mechanical interlocking two sources with a tie circuit breaker (open transition) The two sources are interlocked to prevent paralleling (open transition). Example Possible circuit breaker states S1 S2 S3 S3 S1 S2 Description: Any two circuit breakers can be closed, with the third being interlocked. Materials required: Each circuit breaker has an interlocking module and a Bowden cables. Three additional Bowden cables must be ordered separately. Order no. (page 19-4) Connections of Bowden cables: 1st Bowden cable: S1 A1 - S2 E1 2nd Bowden cable: S1 A2 - S3 E1 3rd Bowden cable: S2 A1 - S1 E1 4th Bowden cable: S2 A2 - S3 E2 5th Bowden cable: S3 A1 - S1 E2 6th Bowden cable: S3 A2 - S2 E2 19 - 4 19.1.4 Mechanical interlocking feeder circuit breakers (single load, open transition) The feeder breakers are interlocked so that only one feeder may be closed at a time. Example Possible circuit breaker states S1 S1 S2 S3 S3 S2 Description: When one circuit breaker is closed, the other two cannot be closed. Materials required: Each circuit breaker has an interlocking module and a Bowden cable. Three additional Bowden cables must be ordered separately. Order no. (page 19-5) Connections of Bowden cables: 1st Bowden cable: S1 A1 - S2 E1 2nd Bowden cable: S1 A2 - S3 E1 3rd Bowden cable: S2 A1 - S1 E1 4th Bowden cable: S2 A2 - S3 E2 5th Bowden cable: S3 A1 - S1 E2 6th Bowden cable: S3 A2 - S2 E2 19 - 5 19.1.5 Mechanical interlocking three sources (open transition to standby system) The standby system is mechanically interlocked with the two source circuit breakers to prevent paralleling the standby system with either or both primary source(s). Example Possible circuit breaker states S1 S1 S2 S3 S3 S2 Description: Two circuit breakers (S1, S3) can be independently opened and closed, the third (S2) being ready to close only if the other two are open. If the third is closed, the other two cannot be closed. Materials required: Each circuit breaker has an interlocking module and a Bowden cable. A Bowden cable must be ordered separately. Order no. (page 19-6) Connections of Bowden cables: 1st Bowden cable: S1 A1 - S2 E1 2nd Bowden cable: S2 A1 - S1 E1 3rd Bowden cable: S2 A2 - S3 E1 4th Bowden cable: S3 A1 - S2 E2 19 - 6 19.1.6 Mechanical interlocking source and tie circuit breaker (open transition to standby system) The standby system is mechanically interlocked with the tie circuit breaker to prevent paralleling with primary source. Example Possible circuit breaker states S1 S2 S3 S3 S1 S2 Description: One circuit breaker (S1) can be opened and closed independently of the two others. The two others cancel each other out, i.e. one can only be closed if the other is open. Materials required: Two of the three circuit breakers (S2, S3) each have an interlocking module and a Bowden cable. Order no. (page 19-7) Connections of Bowden cables: 1st Bowden cable: S2 A1 - S3 E1 2nd Bowden cable: S3 A1 - S2 E1 19 - 7 19.2 Installing interlocking module WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - - Switch off and discharge the closing spring (page 24-2) - Remove the breaker from the cradle (page 24-3) or remove the fixed-mounted breaker if necessary (page 5-2) - Remove front panel and side cover on the right, if required (page 24-4) 19.2.1 Installing intermediate shaft and coupling Mechanical interlooking module with ring Fitting 1 Frame size 19 - 8 Length L (mm) I 48 II 118 III 232 For frame size III, draw out version: mechanical interlocking module with ringg 5 2 3 6 Hold 4 8 9 7 NOTE Working through step 9, the intermediate shaft must engage in a hole inside the circuit breaker. Only then it will be possible - working through step 10 - to fit the support for the intermediate shaft in the guide of the side wall. 19 - 9 10 Function check Then: - Fit back front panel and side cover on the right, if it was removed (page 24-4) 19 - 10 19.2.2 Fitting interlocking module Note If there isn't enough free space for installation on the right side of the circuit breaker inside the cubicle, it may be advantageous to pre-assemble the Bowden cables on the output side before fitting the interlocking module. (page 19-12) Mechanical interlocking module (2) (3) (1) (4) 3 2 Size 5 1 8 Nm (5) (7) (3) (1) (2) (3) (4) (5) (6) (7) (6) (7) Cradle Fixed-mounted breaker 2x socket head cap screw M6x12 with strain washer 1x socket head cap screw M6x25 with strain washer and square nut 2x socket head cap screw M6x35 with strain washer 2x jam nut; penetrates into mounting foot by tightening; if necessary, prevent jam nut from rotating 1x washer with large outside diameter Then: - Install back the breaker (page 5-2) 19 - 11 19.2.3 Mounting the Bowden cables Fitting Bowden cable on output site 4 6 1 5 7 3 2 0256-2_u Securing the Bowden cable R > 20" (500 mm) Installing the Bowden cable at the input of the circuit breaker to be interlocked 2 6 1 3 5 4 19 - 12 7 (1) (1) (1) Steel index clip Adjusting the Bowden cable 1 2 3 4 Then: - According to the planned configuration of the circuit breaker interlocking, screw socket head cap screws with toothed lock washers, respectively plastite-screws with lock washers into the associated index clips if applicable Configurations (page 19-1) - Insert the draw-out circuit breaker into the cradle, push into disconnected position, close the cubicle door if required and rack it into connected position (page 6-1) 19 - 13 19.2.4 Function check - Close the cubicle doors Charge closing spring of circuit breakers to be interlocked (page 6-4) Test the various possibilities of the planned interlocking configuration one after the other Re-adjust Bowden cables if necessary Then: - Discharge the closing spring of the circuit breakers to be interlocked (page 24-2) Note The following maintenance points must be followed: 1 2 3 4 5 The adjustment of the Bowden cables needs to be checked after the first 100 switching operations and must be readjusted if necessary. The adjustment of the interlocking device needs to be checked and, if necessary, readjusted every 1000 operations or at least once every year. During the inspection, the Bowden cables have to be checked against kinks and abrasions, split wires of the exposed steel cable, damage to the cable housing and the adjustment unit (tube setting with thread and nut) and have to be readjusted if necessary. In addition, the movability of movable parts of the interlocking device in their bearings needs to be examined. In extreme environmental conditions (e.g. increased environmental temperature or exposure to chemicals) maintenance checks needs to be performed more frequently. When maintaining the circuit breaker, check the operation of the interlock device and replace as necessary. See table (page -14). Catalog Numbers Mechanical Interlocking Catlog number Mechanical interlock assembly for drawout circuit breakers (FS I, II, and III) WLNTLK Mechanical interlock assembly for fixed-mounted circuit breakers (FS I) WLNTLKF1 Mechanical interlock assembly for fixed-mounted circuit breakers (FS II and III) WLNTLKF Qty.(1) Bowden Cable - 2m WLNTLWIRE2 Qty.(1) Bowden Cable - 4.5m WLNTLWIRE4 19 - 14 20 Phase barriers The rear sides of the fixed-mounted circuit breakers and drawout circuit-breaker cradles feature guide slots and mounting holes for the purpose of incorporating phase barriers. The guide slots are not included on FS II class C breakers. Usable material, e.g.: NEMA GPO-3, min. thickness 2.3 mm (3/32"), max. thickness 4 mm (5/32") or comparable material (1) (2) (1) (2) 8 mounting holes for self-tapping screw 4.2 mm, screw-in depth max. 16 mm Guide slot 4 mm wide Vertical Horizontal 20 - 1 21 Arc chute covers The arc chute cover is available as an optional accessory for cradles. 0695_nu The cover is provided to protect the breaker from larger foreign objects (e.g. tools). 21.1 Field installation DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Remove the circuit breaker from the cradle (page 24-3) 21 - 1 Frame size I 2 (1) Size 5 1 8 Nm 71 lb-in (2) 0729_nu (3) (1) (2) (3) Optional arc chute cover Standard arc chute cover Cradle FS I The optional arc chute cover must replace the shorter, standard cover. NOTE Mounting of rear wall attached current transformers on the line side is possible with the standard arc chute cover only. 21 - 2 Frame size II 4 4 3 4 (1) 2 Size 5 4 2 (2) 8 Nm 71 lb-in 1 5 0697_nu PH 2 2 3,2 Nm 28 lb-in (3) 2 (1) (2) (3) Socket head cap screw M6x20 Self-tapping screw M4 x10 Socket head cap screw M6x20 Frame size III 0697-2_nu 2 1 1 21 - 3 3 0697-1_nu PH 2 5 Size 5 4 8 Nm 71 lb-in 4 (1) (1) 3,2 Nm 28 lb-in (2) Socket head cap screw M6x20 Self-tapping screw M4 x10 21.2 Catalog numbers Frame size Arc chute cover for cradle Catalog No. I WLGARC1UL II *) WLGARC2UL *) Not suitable for class C. 21 - 4 22 Door sealing frame For frame size II and III only. Dimension drawing of door cutout Front view of the cubicle door (1) (2) (3) 22 - 1 Mounting surface of the circuit breaker or cradle Center of breaker front panel Eight mounting holes for the door sealing frame Installing the door sealing frame NOTICE 1 2 3 Catalog No. Door sealing frame WLDSF Not for use with fuse carriages. 22 - 2 l 23 Plexiglas breaker cover NOTE Following a short circuit interruption, check that the Plexiglas breaker cover is firmly in place and the seal is maintained. For frame size II / III only. Dimension drawing for door cutout and mounting holes (1) (2) (3) 23 - 1 Center of breaker front panel 4 mounting holes for hinges Mounting surface of circuit breaker or cradle Attaching the Plexiglas cover (1) (2) (3) (4) (5) Cubicle door with door cutout Plexiglas cover Hinge pin 2 hinges with opening function (right and left) 8 x Socket head cap screws M5 with washer and lock nuts Installation of the right side hinge in the same fashion. Handling: To open the Plexiglas cover, push the hinge pins on the left or right hinge together or, to remove the Plexiglas cover, unlock both hinges. Catalog number Catalog No. Plexiglas cover WLPGC 23 - 2 24 Maintenance DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment/property damage. Turn off and lock out all power supplying this device before working on this device. Only qualified personnel should work on this equipment, after becoming thoroughly familiar with all warnings, safety notices, and maintenance procedures contained herein and on the devices. The successful and safe operation of this equipment is dependent on proper handling, installation, operation and maintenance. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. Qualified Personnel For the purpose of this instruction manual and these product labels, a "qualified person" is one who is familiar with the installation, construction and operation of the equipment and the hazards involved and who, in addition, has the following qualifications: d) Is trained and authorized to energize, de-energize, clear, ground and label circuits and equipment in accordance with established safety practices. e) Is trained in the proper care and use of protective equipment in accordance with established safety practices. f) Is trained in administering first aid. The inspection procedure according to NEMA AB4, section 3, must be performed once a year. The arc chutes and contact system must be inspected according to these operating instructions. If a fault condition opens the circuit breaker, the circuit breaker should be inspected before it is replaced into service. - 24 - 1 24.1 Preparation for maintenance 24.1.1 Opening the circuit breaker and discharging the closing spring Fixed-mounted circuit breaker Draw-out circuit breaker 1 OPEN the circuit breaker Secondary Circuit 2 Position indicator Disconnect secondary circuits (page 24-3) green 3 CLOSE the circuit breaker 4 Depress the OPEN button again 5 Indications 24 - 2 24.1.2 Removing the circuit breaker from the cradle Crank the circuit breaker into the disconnected position - Unlock racking handle / withdraw racking handle (page 6-3) Stop red Position indicator blue green Push in the racking handle 2 1 3 4 NOTICE Racking Handle Damage. Turning the racking handle beyond the stop will cause damage to the racking mechanism. When the stop is reached, rotate the handle counter-clockwise until it can be stowed. Pull circuit breaker into withdrawn position and remove 3 1 24 - 3 2 24.2 Changing front panel DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) 24.2.1 Removing front panel 3 1 2 1 PH 2 24.2.2 Reinstalling the front panel 3 PH 2 2 3 1 2,5 Nm 22 lb-in 24 - 4 24.3 Checking arc chutes It is recommended that the arc chutes be inspected on a regular basis.The arc splitter plates erode as the result of load breaking. This constitutes normal wear. The erosion of the arc splitter plates can manifest itself as wear of the plates, a layer of soot, or small spots of collections of molten metal. In case of heavy wear (severe erosion, large deposits of molten metal, etc), the circuit breaker should be replaced. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Move the circuit breaker into the withdrawn position in the cradle (page 24-3) 24 - 5 24.3.1 Removing arc chutes B A 1 3 2 4 2 PH 2 1 0042_nu 4 00 43 -04 FS II, class C shown A B Frame size I and II with flush arc chute Frame size II, class C and frame size III 1 Loosen screw by approx. 15 mm; do not remove it; FS III and FS II, class C: remove screw completely Push the cover back; FS III and FS II, class C: lift the cover carefully Remove the cover Take out the arc chute 2 3 4 WARNING Damage to arc chute components. Mishandling may lead to broken insulation plates of the arc chute housing, and compromised insulation capacity. Do not stand arc chutes up, when placing them on a table, or any other surface outside of the circuit breaker. The arc chutes should be placed on their side to prevent breakage of the insulation plates. 24.3.2 Visual inspection In the case of heavy wear (burnout on arc splitter plates), replace the circuit breaker. 24 - 6 24.3.3 Installing arc chutes Frame size I and II 5 2 1 Size 4 mm 8 Nm 71 lb-in Frame size II and class C and frame size III (Frame size II, class C shown) 5 3 Size 4 mm 4 1 2 8 Nm 71 lb-in 00 43 -0 5 1 2 3 4 5 24 - 7 Insert arc chute, push cover back if necessary Slide the cover into place Check position of the 2 screens, class C only Hook the cover carefully into place and fold it down Insert the screw and tighten to the specified torque 24.4 Inspection of arc chute covers The arc chute cover is available as an optional accessory for cradles. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. 0695-01 Turn off and lock out all power supplying this device before working on this device. In addition to the arc chute inspection, an inspection of the arc chute covers is also recommended. The powder-coated inner sides of the covers which face the arc chutes must not be burned. A layer of soot or small spots of collections of molten metal are normal. If the powder-coating on the inner side of the cover has burned through or damaged, this must be replaced Arc chute covers (page 21-1) in the opposite order 24 - 8 24.5 Checking contact erosion It is strongly recommended that the breaker's internal contacts be inspected on a regular basis. Load breaking and short-circuit trips cause contact erosion. The WL circuit breaker is equipped with a contact erosion indicator for monitoring wear of the circuit breaker's internal contacts. DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Will cause serious personal injury. Do not place hands or objects within the arc chamber. - OPEN circuit breaker the circuit breaker and discharge the closing spring (page 24-2) Move the circuit breaker into the withdrawn position in the cradle (page 24-3) Manually charge the closing spring (page 6-4) Close the circuit breaker (page 6-7) Remove the arc chutes (page 24-6). View with the circuit breaker closed (4) (2) (5) (1) (3) 0071-1 (1) (2) (3) (4) (5) Indicator pin Indicator pin is visible in the big recess Indicator pin is no longer visible Arcing tip Arc Chamber If the indicator pin is no longer visible, the circuit breaker must be replaced. For the visual inspection of fixed-mounted circuit breakers, use a mirror if required. 24 - 9 DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. WARNING High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker. (1) (2) 8 Nm 71 lb-in (3) (4) (5) (6) Size 10 mm (2) (3) 0715_nu 0716_nu 70 Nm 50 ft-lb (7) *) (1) (2) (3) (4) (5) (6) (7) Hex-head screw M6x20 Threaded plate 2xM12 Vertical adapter Riser Socket head cap screw M12x90 Hex-head screw M6x35 Socket head cap screw M12x50 *) Different offset 24 - 10 24.6 Exchanging the primary disconnects DANGER Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device. (1) 0639-1_nu (2) (1) (2) Finger cluster Stab tip 24.6.1 Exchanging the finger cluster - OPEN the circuit breaker and discharge the closing spring (page 24-2) - Remove the circuit breaker from the cradle (page 24-3) All frame sizes 2 7 1 (1) PZ 2 8 6 5 3,2 Nm 28 lb-in PZ 2 10 3 4 (1) Self-tapping M4 collar screw 1...4 5 6 7...10 24 - 11 Remove M4 collar screws Remove finger cluster Assemble new finger cluster Assemble M4 collar screws 9 FS II class C only 2 15 16 1 3 14 3 5 4 Size 10 Size 5 15 Nm 28 ft-lb 8 Nm 71 lb-in 10 11 9 8 PZ 2 3,2 Nm 28 lb-in 7 6 12 13 17 00 43 1 2 3 4...7 8 9 10...13 14 15 16 17 -06 Remove the metal arc chute cover Remove M12 screw and washer Remove the plastic part Remove M4 collar screws Remove finger cluster Assemble new finger cluster Assemble M4 collar screws Assemble the plastic part Assemble M12 screw and washer Assemble metal arc chute cover Ensure that the plastic parts are aligned. Ensure that the given torque values are observed. 24 - 12 NOTE Ensure, that the shoulder bolt has free play in the slotted holes of the brass bracket of the finger cluster. Lubricating the finger clusters Clean and grease finger contacts on both ends (between stab tip and finger cluster, and between vertical adapter and finger cluster) before assembly. (Grease: Isoflex Topas NB 52 by Kluber Lubrication) Attaching vertical adapter with finger cluster (page 24-13) 24.6.2 Catalog numbers Frame size Max. circuit breaker rated current In max (A) I 800 /1200 WLFNGR1UL 800 / 1200 / 1600 WLFNGR10UL 2000 WLFNGR15UL 800 / 1200 / 2500 / 3000 WLFNGR30UL II Replacement Finger Cluster Kit Grease used for assemlby 24 - 13 II class C 800/ 1200 / 1600 / 2000 / 2500 / 3000 III 4000 / 5000 all all Catalog No. WLFNGR30ULC WLFCK3 WLGREASE 24.6.3 Exchanging the stab tip (1) (2) (5) (3) (1) (2) (3) (4) (5) 0728_nu (4) Stab tip Socket head cap screw M6 Hex-head screw M12 4" runback load side Stab tip for FS I line side FS I / FS II only: 9 3 8 Size 5 mm 7 1 2 5 8 Nm 71 lb-in 6 70 Nm 50 ft-lb Size 10 mm 4 NOTE Ensure correct orientation of FS I line stab tip when mounting. 24 - 14 0649-4 FS III only: (3) (1) 0649-3 (2) Size 8 mm (1) (2) (3) 24.6.4 6x Socket head cap screw M10x40 (40Nm /28ft-lb) and belleville washer Stab tip bridge Vertical bus connector Catalog numbers Frame size Max. circuit breaker rated current I n max (A) I 800 / 1200 WLGST15123LI 800 / 1200 / 1600 WLGST10163LL 2000 WLGST15203LL 2500 / 3000 WLGST30323LL 800 / 1200 / 1600 / 2000 / 2500 / 3000 WLGST30323LL 800 / 1200 (2 bolt hole pattern) WLGST15203LL 800 / 1200 (4 bolt hole pattern) WLGST15203LD 800 / 1200 / 1600 (2 bolt hole pattern) WLGST10163LL 800 / 1200 / 1600 (4 bolt hole pattern) WLGST10163LD 2000 (2 bolt hole pattern) WLGST15203LL 2000 (4 bolt hole pattern) WLGST15203LD 800 / 1200 / 2500 / 3000 WLGST30323LL II class C 800 / 1200 / 1600 / 2000 / 2500 / 3000 WLGST30323LL Stab tip load and line side III 4000 / 5000 WLGST30503LL Grease for contact fingers all all Stab tip line side II II class C Catalog No. I Stab tip load side II 24 - 15 WLGREASE 24.7 Cleaning and greasing the circuit breaker for draw-out circuit breaker only Finger cluster (1) (1) 0645-01 (1) (1) Greasing points 1 2 Wipe away old grease and apply new grease 24 - 16 Cradle (1) (1) (1) (1,2) 06 45 -02 (1) (2) Greasing points opposite side accordingly 1 2 24 - 17 Clean the track of the rails and relubricate the designated points Grease Catalog No. Isoflex Topas NB52 manufactured by Kluber Lubrication Munchen KG WLBGREASE 25 Technical Data WL Insulated Case Circuit Breaker Ratings for UL489 Listed Breakers s WL frame ratings - frame size 1 800A 1200A 1600A 2000A Rating Class Interrupting current frame Ics (kAIR RMS) 50/60 Hz 240VAC 480VAC 600VAC Short-time current Icw (kA RMS) 0.4 sec. Extended instantaneous protection rating (kA RMS) 480VAC 600VAC Close and latch rating (kA RMS) Applicable rating plug range Minimum enclosure dimension (in.) Mechanical make-time (ms) Mechanical break-time (ms) Electric close make-time (ms) Electric trip/ UV break-time (ms) Electric trip and reclose interval (ms) Mechanical duty cycles (no maint.) Electrical duty cycles (no maint) Draw-out breaker efficiency (Watts loss at I n) Fixed-mount breaker efficiency (Watts loss at In) Ambient operating temperature (C) Weights (Fixed Breaker/DO Breaker/Cradle) lbs. S H L 65 85 100 65 85 100 65 65 65 65 65 65 65 85 100 65 65 65 65 65 65 200 - 800A 22Wx15Hx19.5D 35 34 50 40/73 80 7500 7500 80 60 -25 to 40 86/137/108 S H L 65 85 100 65 85 100 65 65 65 65 65 65 65 85 100 65 65 65 65 65 65 200 - 1200A 22Wx15Hx19.5D 35 34 50 40/73 80 7500 7500 180 120 -25 to 40 86/137/108 S H L 65 85 100 65 85 100 65 65 65 65 65 65 65 85 100 65 65 65 65 65 65 200 - 1600A 22Wx15Hx19.5D 35 34 50 40/73 80 7500 7500 350 160 -25 to 40 86/137/108 S H L 65 85 100 65 85 100 65 65 65 65 65 65 65 85 100 65 65 65 65 65 65 200 - 2000A 22Wx15Hx19.5D 35 34 50 40/73 80 7500 7500 530 270 -25 to 40 86/137/108 WL frame ratings - frame size 2 800A Rating Class Interrupting current frame Ics S 65 240VAC (kAIR RMS) 50/60 Hz 480VAC 600VAC Short-time current Icw (kA RMS) 0.4 sec. Extended instantaneous protection 480VAC rating (kA RMS) 600VAC Close and latch rating (kA RMS) Applicable rating plug range Minimum enclosure dimension (in.) Mechanical make-time (ms) Mechanical break-time (ms) Electric close make-time (ms) Electric trip/ UV break-time (ms) Electric trip and reclose interval (ms) Mechanical duty cycles (no maint.) Electrical duty cycles (no maint) Draw-out breaker efficiency (Watts loss at In) Fixed-mount breaker efficiency (Watts loss at In) Ambient operating temperature (C) Weights (Fixed Breaker/DO Breaker/Cradle) lbs. 1200A L 100 65 100 65 85 65 85 65 100 65 85 65 85 200 - 800A L 100 1600A C 150 S 65 C 150 150 100 100 150 100 100 65 100 150 65 85 100 65 85 100 65 100 150 65 85 100 65 85 100 200 - 1200A S 65 L 100 65 100 65 85 65 85 65 100 65 85 65 85 200 - 1600A 2000A C 150 S 65 L 100 150 100 100 150 100 100 65 100 65 85 65 85 65 100 65 85 65 85 200 - 2000A 2500A 3000A C 150 L 100 C 150 150 100 100 150 100 100 100 150 85 100 85 100 100 150 85 100 85 100 200 - 2500A L 100 C 150 100 150 85 100 85 100 100 150 85 100 85 100 200 - 3000A 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx15Hx19.5D 35 34 50 40/73 80 10,000 (5000 35 34 50 40/73 80 10,000 (5000 35 34 50 40/73 80 10,000 (5000 35 34 50 40/73 80 10,000 (5000 35 34 50 40/73 80 10,000 (5000 35 34 50 40/73 80 80 10,000 (5000 for Class C) for Class C) for Class C) for Class C) for Class C) for Class C) 7500 (5000 7500 (5000 4000 4000 4000 for Class C) for Class C) 85 150 7500 (5000 for Class C) 320 500 680 1000 40 -25 to 40 124/159/112 148/220/163 80 -25 to 40 124/159/112 148/220/163 120 -25 to 40 124/159/112 148/220/163 230 -25 to 40 130/177/128 148/220/163 320 -25 to 40 130/177/128 148/220/163 480 -25 to 40 130/177/128 148/220/163 (Class C) (Class C) (Class C) (Class C) (Class C) (Class C) 25 - 1 WL Non-Automatic Switch UL 489 Ratings WL frame ratings - Frame size 3 4000A Rating Class L Interrupting current frame Ics (kAIR RMS) 50/60 Hz Short-time current Icw (kA RMS) Extended instantaneous protection rating (kA RMS) Close and latch rating (kA RMS) Applicable rating plug range Minimum enclosure dimension (in.) Mechanical make-time (ms) Mechanical break-time (ms) Electric close make-time (ms) Electric trip/ UV break-time (ms) Electric trip and reclose interval (ms) Mechanical duty cycles (no maint.) Electrical duty cycles (no maint) Draw-out breaker efficiency (Watts loss at I n) Fixed-mount breaker efficiency (Watts loss at In) Ambient operating temperature (C) Weights (Fixed Breaker/DO Breaker/Cradle) lbs. 240VAC 480VAC 600VAC 0.4 sec. 480VAC 600VAC WL frame ratings Rating Class Breaking capacity with external relay (kA RMS) 50/60 Hz, instantaneous trip Short-time current Icw (kA RMS) 1) Class C 25 - 2 240VAC 480VAC 600VAC 0.4 sec. 5000A C 100 150 100 150 85 100 85 100 100 150 85 100 85 100 800 - 4000A 32Wx22.5Hx19.5D 35 34 50 40/73 80 5000 2000 1100 580 -25 to 40 181/278/306 200/278/306 (Class C) L C 100 150 100 150 85 100 85 100 100 150 85 100 85 100 800 - 5000A 32Wx22.5Hx19.5D 35 34 50 40/73 80 5000 2000 1100 580 -25 to 40 181/278/306 200/278/306 (Class C) Frame size 1 800-1200 A Frame size 2 800 - 3000A Frame size 3 4000/5000A H 85 85 65 65 L 100 100 85 85 L 100 100 85 85 WL circuit breakers Frame Size I Frame Rating Frame Size II Frame Size III 800 1200 800 1200 1600 2000 2500 3000 4000 5000 Endurance Mechanical (without maintenance) operating cycles 7,500 7,500 10,000 7,5001) 10,000 7,5001) 10,000 7,5001) 10,000 7,5001) 10,000 7,5001) 10,000 7,5001) 5,000 5,000 Electrical (without maintenance) operating cycles 7,500 7,500 7,500 7,500 7,500 4,000 4,000 4,000 2,000 2,000 Switching frequency operatings/ hour 60 60 60 60 60 60 60 60 60 60 ms 80 80 80 80 80 80 80 80 80 80 Minimum interval between breaker trip and next closing of circuit breaker (when used with the automatic mechanical reset of the reclosing lockout) 30 30 30 30 h max 1 mm Mounting position Weight Fixed-mounted circuit breaker kg/lb 39/86 56/124 67/1481) 59/130 67/1481) 64/141 67/1481) 82/181 Draw-out circuit breaker kg/lb 62/137 72/159 100/2201) 80/177 100/2201) 95/209 100/2201) 118/260 Cradle kg/lb 49/108 51/112 74/1631) 58/128 74/1631) 69/152 74/1631) 139/306 Secondary disconnect wire sizes max # of aux. connecting leads x cross section (solid or stranded) screw-type terminal 1 x AWG 14 or 2 x AWG 16 Spring clamp terminal 2 x AWG 14 Ring terminal system 2 x AWG 14 1 x AWG 102) 2 x AWG 16 Pigtail leads (fixedmounted only) 1 x AWG 14 40" long TOC wire connection size (Cu) max # of aux. connecting leads x cross section (solid or stranded) Spring clamp terminal 1 x AWG 14 MOC wire connection size (Cu) max # of aux. connecting leads x cross section (solid or stranded) Screw clamp terminal 1 x AWG 14 1) Class C 25 - 3 WL Circuit Breaker Accessory Ratings Manual-operating mechanism with Mechanical Closing Closing/charging the closing spring Maximum actuating force required on hand lever 52 lbs Number of hand lever strokes required 9 Motor-operating mechanism with Mechanical and Electrical Closing Charging the closing spring Closing solenoid and Shunt Trip Coil voltage tolerance 24V DC 14 - 28V DC 48V DC 28 - 56V DC 120V AC / 125V DC 70 - 140V DC 104 - 127V AC 240V AC / 250V DC 140 - 280V DC 208 - 254V AC 180Y / 104V AC 220Y / 127V AC Power consumption (5% duty cycle) 120 W for 50 ms Minimum closing solenoid actuation signal required (5% duty cycle) 50 ms Motor-operating mechanism with Mechanical and Electrical Closing Motor for charging closing spring Motor voltage tolerance at 120V AC, 240V AC 85 - 110% Extended tolerance for battery operation at 24 V DC, 48 V DC, 125 V DC, 250 V DC 70 - 126% Power consumption of the motor 110 W Time required for charging the closing spring 10s For motor and switch-on solenoid short-circuit protection Short-circuit protection Standard slow-blow cartridge 24 - 60 V 6A 110 - 250 V 3A Auxiliary Release Undervoltage release (UVR) Operating values 85% (circuit breaker can be closed) 35 - 70% (circuit breaker opens) AC Coil voltage tolerance at 120 V AC, 240 V AC 85 - 110% DC Extended tolerance for battery operation at 24 V DC, 48 V DC, 125 V DC, 250 V DC 85 - 126% Rated control supply voltage AC 50/60 Hz V 120, 240 DC V 24, 48, 125, 250 AC VA 200 / 5 DC W 200 / 5 ms 200 Setting 1 ms 80 Setting 2 ms 200 Adjustable delay s 0.2 to 3.2 Reset by additional NC direct opening ms 100 Power consumption (inrush / contiuous) Opening time of the circuit breaker for AC / DC UVR (no delay time ), 2 settings UVR (with delay time ) 25 - 4 WL Circuit Breaker Accessory Ratings Interlock Shunt Trip (100% continuous duty) Operating range 85 - 110% Extended tolerance for battery operation at 24V DC, 48V DC, 125V DC, 250V DC 70 - 126% Rated voltage AC 50/60Hz V 110, 230 DC V 24, 30, 48, 60, 110, 220 AC / DC VA / W 15 / 15 Minimum shunt trip actuation signal at rated voltage ms 60 Opening time of the circuit breaker at rated voltage ms 80 Power consumption Short circuit protection Smallest permissible fuse 1A Auxiliary Contacts and Mechanism Operated Contacts (MOC) Contact rating Alternating current 50/60 Hz Direct current Rated operational voltage 240 V Rated operational current, continuous 10A Rated operational current, making 30A Rated operational current, breaking 3A Rated operational voltage 24 V, 125 V, 250 V Rated operational current, continuous 5A Rated operational current, making 1.1A at 24 V, 1.1A at 125 V, 0.55 A at 250 V Rated operational current, breaking 1.1A at 24 V, 1.1 A at 125 V, 0.55 A at 250 V Bell Alarm Switch and Ready-to-Close Signal Contact Contact rating Alternating current 50/60 Hz Direct current Rated operational voltage 240 V Rated operational current, continuous 5A Rated operational current, making 8A Rated operational current, breaking 5A Rated operational voltage 24 V, 48 V, 125 V 250 V DC1) Rated operational current, continuous 0.4 A 0.2 A Rated operational current, making 0.4 A 0.2 A Rated operational current, breaking 0.4 A 0.2 A Shunt release, UVR and tripped signaling contacts Contact rating Alternating current 50/60 Hz Direct current Rated operational voltage 127 V, 240 V Rated operational current, continuous 3A Rated operational current, making 5A Rated operational current, breaking 3A Rated operational voltage 24 V, 48 V, 125 V, 48 V DC 125 V DC (IEC rating only) Rated operational current, making 1.0 A 0.4 A Rated operational current, breaking 1.0 A 0.4 A 1) 250 V DC rating available since October 2005. 25 - 5 WL Circuit Breaker Accessory Ratings Truck Operated Contacts (TOC) Contact rating Alternating current 50/60 Hz Direct current 25 - 6 Rated operational voltage 120 V Rated operational current, continuous 10 A Rated operational current, making 6A Rated operational current, breaking 6A Rated operational voltage 24 V 24 V, 48 V, 125 V 250 V Rated operational current, continuous 6A 1A 1A Rated operational current, making 6A 0.22 A 0.11 A Rated operational current, breaking 6A 0.22 A 0.11 A WL Circuit Breaker Function ov er view of the electronic tr ip units Basic Functions ETU745 Long-time overcurrent protection Function can be switched ON/OFF Setting range IR = In x ... In L N Switch-selectable overload protection (I2t or I4t dependent function) Setting range of delay time class t R at I 2t (seconds) Setting range of delay time t R at I 4t (seconds) Thermal memor Phase loss sensitivity N-conductor protection Function can be switched ON/OFF N-conductor setting range IN = In x Short-time delayed overcurrent protection Function can be switched ON/OFF Setting range Isd = In x ... S Switch-selectable short-time delayed short-circuit protection (I2t dependent function) Setting range of delay time tsd at I2t (seconds) Zone Selective Interlocking (ZSI) function Instantaneous overcurrent protection Function can be switched ON/OFF, Extended Instantaneous Protection is enabled when OFF Setting range Ii = In x ... I G 1 2 Setting range of delay time tsd, fixed (seconds) Ground fault protection 2 Trip and alarm function Detection of the ground fault current by residual summing method Detection of the ground fault current by direct summing method Setting range of the Ig for trip Setting range of the Ig for alarm Setting range of the delay time tg (seconds) Switch-selectable ground fault protection (I2t / fixed) Setting range delay time tg at I2t ZSI ground function - 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.8, 0.9, 1 2, 3.5, 5.5, 8, 10, 14, 17, 21, 25, 30 1, 2, 3, 4, 5 (via slide switch) at tsd=20ms (M) (via slide switch) 0.5 ... 1 (via rotary switch) 1.25, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12 0.02 (M), 0.1, 0.2, 0.3, 0.4, OFF (via rotary coding switch) 0.1, 0.2, 0.3, 0.4 per CubicleBUS module (via rotary coding switch) 1.5, 2.2, 3, 4, 6, 8, 10, 12 0.8 x Icw = max, OFF= I cw =EIP 1 O (field installable module) A,, B, C, D, E (100... 1200A) A, B, C, D, E (100... 1200A) 0.1, 0.2, 0.3, 0.4, 0.5 0.1, 0.2, 0.3, 0.4, 0.5 per CubicleBUS module Extended Instantaneous Protection (EIP) allows the WL circuit-br eaker to be applied at the withstand rating of the circuit breaker with minus 0% tolerance; this means that there is no instantaneous override at all. EIP further enables the circuit breaker to be applied up to the full instantaneous rating of the circuit breaker on systems where the available fault current exceeds the withstand rating. Ground Fault Module cannot be removed after installation. - O available not available optional 25 - 7 WL Circuit Breaker Function overview of the electronic trip units Basic Functions ETU745 Parameter sets Selectable between parameter set A and B - LCD LCD, alphanumeric (4-line) LCD, graphic O - Communication CubicleBUS integrated Communication capability via MODBUS or PROFIBUS Metering function Metering function capability with Metering Function or Metering Function PLUS Display by LED Trip unit active Alarm ETU error L trip S trip I trip N trip G trip G alarm Tripped by extended protection or protective relay function Communication Signal contacts with external CubicleBUS modules (opto or relay) Overcurrent warning Load shedding OFF/ON Early signal of long- time trip (200ms) Temperature alarm Phase unbalance Instantaneous trip Short-time trip Long-time trip Neutral conductor trip Ground fault protection trip Ground fault alarm Auxiliar y relay ETU error (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) - O 25 - 8 available not available optional WL Circuit Breaker Function over view of the electronic tr ip units Basic functions ETU748 ETU776 - 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.8, 0.9, 1 - 40-100% of In (Adjustable in Amps 2, 3.5, 5.5, 8, 10, 14, 17, 21, 25, 30 2 ... 30 (step: 0.1s) Setting range of delay timet R at I4t (seconds) Thermal memor y 1, 2, 3, 4, 5 1 ... 5 (step: 0.1s) Phase loss sensitivity at tsd=20ms (M) N-conductor protection Function can be switched ON/OFF N-conductor setting range IN = In x ... - Long-time overcurrent protection Function can be switched ON/OFF Setting range IR = In x ... In L N S I G 1 2 3 Switch-selectable overload protection (I2t or I4t dependent function) Setting range of delay time class tR at I2t (seconds) (via slide switch) ) (on/off via key pad or communications) (on/off via key pad or communications) (via slide switch) (via key pad or communications) 0.5 ... 2, OFF Short-time delayed overcurrent protection Function can be switched ON/OFF - Setting range Isd = In x ... 1.25, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12 Setting range of delay time tsd, fixed (seconds) M, 0.1, 0.2, 0.3, 0.4 Switch-selectable short -time delayed short-circuit protection (via rotar y coding switch) (I2t dependent function) Setting range of time delay tsd at I2t (seconds) 0.1, 0.2, 0.3, 0.4 Zone Selective Interlocking (ZSI) function per CubicleBUS module Instantaneous overcurrent protection Function can be switched ON/OFF, Extended Instantaneous Protection is enabled when OFF - Setting range Ii = In x ... - Ii = Icw = EIP 2 Ground-fault protection 3 Trip and alarm function Detection of the ground fault current by residual summing method Detection of the ground fault current by direct summing method Setting range of the Ig for trip Setting range of the Ig for alarm Setting range of the delay time tg (seconds) Switch-selectable ground-fault protection (I2t / fixed) Setting range delay time tg at I2t ZSI ground function 1 O (field installable module) (via key pad or communications) 1.25 ... 0.8 x Icw = max (step: 10A) M, 0.08 ... 0.4, OFF (step: 0.001s) (via key pad or communications) 0.1 ... 0.4 (step: 0.001s) per CubicleBUS module (via key pad or communications) 1.5 x In ... 0.8 x Ics = max, OFF= Icw =EIP 2 O (field installable module) (via key pad or communications) A, B, C, D, E A, B, C, D, E A ... E (step: 1A) A ... E (step: 1A) 0.1, 0.2, 0.3, 0.4, 0.5 0.1 ... 0.5 (step: 0.001s) 0.1, 0.2, 0.3, 0.4, 0.5 per CubicleBUS module 0.1 ... 0.5 (step: 0.001s) per CubicleBUS module Note: ETU776 settings via WLBDA, Modbus, or Profibus: 1A steps Via ETU Keypad: Below 1000A: 10A steps 1000A-1600A: 50A steps 1600A-10000A: 100A steps Above 10000A, 1000A steps Extended Instantaneous Protection (EIP) allows the WL circuit breaker to be applied at the withstand rating of the circuit breaker with minus 0% tolerance; this means there is no instantaneous override at all. EIP further enables the circuit breaker to be applied up to the full instantaneous rating of the circuit breaker in systems where the available fault current exceeds the withstand rating. Ground Fault Module cannot be removed after installation. - O available not available optional Notes: M = Motor protection setting indicates phase loss sensitivity is enabled. LT pick-up reduced 80% when phase unbalance > 50%. ST = 20 ms Communications = Setting the parameters of the trip unit via the Breaker Data Adapter, MODBUS, or PROFIBUS Key pad = Direct input on the trip unit 25 - 9 WL Circuit Breaker Function overview of the electronic trip units Basic Functions ETU748 ETU776 Parameter sets Selectable between parameter set A and B - LCD LCD, alphanumeric (4-line) LCD, graphic - O - Communication CubicleBUS integrated Communication capability via MODBUS or PROFIBUS Metering function Metering function capability with Metering Function or Metering Function PLUS Display by LED Trip unit active Alarm ETU error L trip S trip I trip N trip G trip G alarm Tripped by extended protection or protective relay function Communication Signal contacts with external CubicleBUS modules (opto or relay) Overcurrent warning Load shedding OFF/ON Early signal of long-time trip (200ms) Temperature alarm Phase unbalance Instantaneous trip Short-time trip Long-time trip Neutral conductor trip Ground fault protection trip Ground fault alarm Auxiliary relay ETU error (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) (only with ground fault module) Metering and Protective Relaying Accuracies Protective Relaying Phase Unbalance (I) Phase Unbalance (V) THD (I) THD (V) Overvoltage Undervoltage Under/Over Frequency Pick-up Accuracy 2% (5...50% In) 2% (5...50% Vn) +/- 3% (80...120% Vn) +/- 3% (80...120% Vn) +/- 2% (80...120% Vn) +/- 2% (80...120% Vn) +/- 0.1 Hz Metering Values (I) at 1 x In (V) at 1 x Vn (P) at 1x In (S) at 1 x In (Q) at 1 x In Accuracy +/- 1% +/- 0.5% +/- 3% +/- 2% +/- 3% - O 25 - 10 available not available optional 26 Abbreviations A Set current for ground fault protection A 1/2 Output information AC Alternating current AMP AMP Incorporated, Harrisburg ANCE Association of Standardization and Certification ANSI American National Standard Institute AWG American Wire Gauge B Set current for ground-fault protection BDA Breaker Data Adapter BSS Breaker Status Sensor C Set current for ground-fault protection CC Closing coil COM15 Communication interface COMM. Communication CONNECT Connected position CSA Canadian Standards Association CUB - c- CUB + c+ D Set current for ground-fault protection DC Direct current DIN German Engineering Standard DISCON Disconnected position E Set current for ground-fault protection E 1/2 Input information ED Duty cycle ESD Electrostatic-sensitive device EN European Standard ETU Trip unit (electronic trip unit) EXTEND. Extended (additional) protection function F1 1st shunt trip F2 2nd shunt trip F3 Undervoltage release F4 Undervoltage release with delay time F5 Tripping solenoid F7 Remote reset solenoid G-alarm Ground-fault alarm G-tripping Ground-fault tripping I/O Input / Output module I2 t Delay time-current relationship based on formula I2t=constant 1/2 (mutual mechanical interlocking module) 1/2 (mutual mechanical interlocking) 26 - 1 I2 t g Delay time for ground-fault based on formula I2tg = constant I2tsd Delay time for S tripping based on formula I2tsd = constant I4 t Delay time-current relationship based on formula I4t = constant I-tripping Instantaneous tripping (short-circuit) Iab Operating value for load shedding Ian Operating value for load restore Ics Rated operational short-circuit breaking capacity Icu Rated ultimate short-circuit breaking capacity Icw Rated short-time withstand current ID Identification number IEC International Electrotechnical Commission Ig Current setting value for G-tripping Ii Current setting value for I-tripping IIT Single-pole short-circuit test current (IT systems) IN Current setting value for N-tripping In Rated current (value of rating plug) In max Max. possible rated current IR Current setting value for L-tripping Isd Current setting value for S-tripping L1 Phase 1 L2 Phase 2 L3 Phase 3 L-tripping Long-time delayed tripping (overload) LED Light emitting diode M Motor MOC Mechanism Operated Auxiliary Conntacts N Neutral pole NC Normally closed contact NO Normally open contact N-tripping Neutral (overload) tripping PIDG Ring lug style (Trademark of AMP) PZ 3...6 Crimping tool (Weidmuller GmbH) S 1/2/3 Circuit breaker 1/2/3 (mutual mechanical interlocking module) S1 Contact position-driven auxiliary switch S10 Switch Electrical Closed S11 Motor cut-off switch S12 Motor disconnect switch S13 Cut-off switch for remote reset S14 Cut-off switch for shunt trip F1 (fast operation) S15 Cut-off switch for closing coil CC (fast operation) S2 Contact position-driven auxiliary switch S20 Signaling switch for "ready-to-close" 26 - 2 S22 Signaling switch for 1st shunt trip S23 Signaling switch for 2nd shunt trip S24 Bell Alarm signaling switch S3 Contact position-driven auxiliary switch S30 Signaling switch for disconnected position (TOC) S31 Signaling switch for test position (TOC) S32 Signaling switch for test position (TOC) S33 Signaling switch for connected position (TOC) S34 Signaling switch for connected position (TOC) S35 Signaling switch for connected position (TOC) S4 Contact position-driven auxiliary switch S40 csignaling switch for "ready-to-close" S41 c signaling switch for "closing spring charged" S43 c signaling switch for 2nd shunt trip S44 c signaling switch for "main contacts OPEN / CLOSED" S45 c tripped signaling switch S46 c signaling switch for connected position S47 c signaling switch for test position S48 c signaling switch for disconnected position S50 ... S53 MOC (external auxiliary switches) S-tripping Short-time delayed tripping SIGUT Siemens trademark for aux. termination technique ST Shunt trip T.U. ERROR Trip unit error TEST Test position tg Delay time for G-tripping TOC Truck operated cell switch (S30 ... S35) tR Delay time for L-tripping (defined at 6 x IR) TRIP G Trip cause was ground fault TRIP I Trip cause was short-circuit (instantaneous) TRIP L Trip cause was overload TRIP N Trip cause was neutral pole overload TRIP S Trip cause was short-circuit (short-time delayed) tsd Delay time for S-tripping tx Delay time for load monitoring Uc Rated control voltage Ue Rated operational voltage Ui Rated insulation voltage UImp Rated impulse withstand voltage UL Underwriters Laboratories Inc. UVR Undervoltage release (instantaneous) UVR td Undervoltage release (delayed) 26 - 3 VT Voltage transformer WAGO WAGO Kontakttechnik, Munchen X Terminal designation according to DIN ZSI Zone Selective Interlocking Iavg Present average of current Iavglt Long term average of current ITHD Distortion factor of current UTHD Distortion factor of voltage 26 - 4 27 Glossary Automatic reset Circuit breakers feature an automatic reset of the tripping solenoid. No manual resetting of the Trip Unit is required to place the circuit breaker in a ready-to-close state. UL 1066 and UL 489 circuit breakers are factory-fitted with this automatic reset feature as standard. The automatic reset feature can be removed as a customer option. Auxiliary releases Both undervoltage releases and shunt trips are available. BSS module Breaker Status Sensor - for collecting circuit breaker status information via signaling switches and transmitting these data to the c. Closing coil A coil used for electrically closing the circuit breaker. Closing spring Module containing a spring as an energy store. The spring is charged by means of a hand-operated lever or a motor, and is latched in its charged state. When the latches are released, the stored energy is transmitted to the pole and the circuit breaker closes. Coding of auxiliary connectors The auxiliary connectors are coded to prevent accidental interchanging of the auxiliary wiring connections. COM15/COM16 Module Communications module Interface adapter for: - converting c signals to PROFIBUS-DP / MODBUS signals and vice-versa - providing three potential-free outputs for control functions (OPEN, CLOSE, 1 freely available) - one input, freely usable for control information from the switchgear. Additional function for draw-out circuit breakers: - detecting the circuit breaker position in the cradle by means of signaling switches S 46, S 47 and S 48. c Bus system in the vicinity of the circuit breaker and to the FieldBus (PROFIBUS-DP / MODBUS) Electrical closing lockout For electrical interlocking of two or more circuit breakers (closing interlock). The electrical closing lockout can block the circuit breaker from closing via a sustained signal. Electrical Closed Electrical activation of the stored energy through the closing coil. Guide rail Used for placing the circuit breaker in the cradle. Finger clusters Connect the main terminals of the circuit breaker with the main terminals of the cradle. Mechanical reclosing lockout and Bell Alarm After tripping, the circuit breaker cannot be reclosed until the mechanical reclosing lockout has been reset by hand. Mechanism Operated Auxiliary Contacts (MOC) A switching module for signaling the circuit breakers switch position, which is mounted in the cradle and activated by the actuating shaft of the circuit breaker. 27 - 1 Motor-operated mechanism The geared motor charges the closing spring automatically as soon as voltage is applied to the auxiliary connections. After closing, the closing spring is automatically charged for the next closing operation. Position indicator To show the circuit breaker position in the cradle. Rating plug This module defines e.g. the setting range of the overload protection. Remote reset The electrical signal of the tripped signaling switch and the red reset button are reset by the optional remote reset solenoid. Shunt trip For remote circuit breaker tripping and locking against closing. Shutter Shutters are insulation plates for covering live main circuits in the cradle (shock protection). Signaling switch for circuit breaker position (TOC) These auxiliary switches operate according to the circuit breaker position in the cradle (-> Truck-operated contact). Spring charging lever The closing spring is charged by several pumping operations. Energy transformer Power supply for the trip unit. Tool operation A cover with a hole (O 0,25") means that buttons can only be pressed using a rod. TOC - Truck operated Cell Switch For remote signaling of the circuit breaker position in the cradle. Truck-operated contact (TOC) A circuit breaker truck-operated auxiliary switch which is mounted in the compartment of a removable circuit breaker and is operated by the circuit breaker frame (-> Signaling switch for breaker position). Undervoltage release For remote tripping and interlocking of the circuit breaker. Circuit breaker application in EMERGENCY OPEN circuits together with an EMERGENCY OPEN facility to be arranged separately. The circuit breaker shall not be tripped by short-time voltage drops (e.g. motor startup). Undervoltage release (time delayed) For remote tripping and interlocking of the circuit breaker. The circuit breaker shall not be tripped by voltage drops (e.g. system transfers). 27 - 2 28 Index A O Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-1 Access block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-2 Arc chute covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-1 Auxiliary and control switches . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 Opening the circuit breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7 Options for guide frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-1 P Basic protective functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12 Breaker Status Sensor (BSS) . . . . . . . . . . . . . . . . . . . . . . . . . . 9-55 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Padlocking facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-15 Phase barriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1 Positions of the circuit breaker in the guide frame . . . . . . . . . . .6-2 C Q Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 Closing Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Coding auxiliary connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30 Coding between circuit breaker and guide frame . . . . . . . . . . . 18-8 COM15 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-58 COM16 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-63 Connected position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Contact erosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-9 Crank the circuit breaker into disconnected position . . . . . . . . 24-3 Cubicle door interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-3 Qualified Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 B D Dimension drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Disconnected position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Door sealing frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-1 E Electronic components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 EMERGENCY OPEN button . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3 F Frame sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 G Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-1 Ground-fault protection modules . . . . . . . . . . . . . . . . . . . . . . . 9-45 R Racking circuit breaker into connected position . . . . . . . . . . . . .6-3 Rating plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-44 Re-closing a circuit breaker tripped by an trip unit . . . . . . . . . . .6-9 Removing from service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-11 Removing the circuit breaker from the guide frame . . . . . . . . .24-3 Replacing the trip unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-49 Resetting the Bell Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1 Ring terminal system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-29 S Safety locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-1 Screwless terminal system . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-29 Sealing caps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-1 Sealing covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-1 Secondary disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-27 Secondary disconnect terminal blocks . . . . . . . . . . . . . . . . . . .5-29 Secondary wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-26 Shunt Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1 Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-1 Standard specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 Storage spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4 T Indicators and operating elements . . . . . . . . . . . . . . . . . . . . . . 14-1 Inserting racking handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 Inserting the circuit breaker in the guide frame . . . . . . . . . . . . . 6-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1 Test position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Trip unit ETU745 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2 Trip unit ETU748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6 Trip unit ETU776 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-8 Tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12 L U Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Lock OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2 Locking devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1 Locking set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1 Undervoltage release . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1, 11-3 I M Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1 Maintenance position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Make-break operations counter . . . . . . . . . . . . . . . . . . . . . . . . 14-4 Manual reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 Mechanism-operated contacts . . . . . . . . . . . . . . . . . . . . . . . . . 12-7 MOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7 Motor disconnect switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3 Motor-operated mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1 Mounting position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Mutual mechanical interlocking . . . . . . . . . . . . . . . . . . . . . . . . 19-1 W Wiring in guide frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-31 Z ZSI module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-83 28 - 1 Siemens Industry, Inc. Norcross, GA 30092 Technical assistance: 1-800-241-3138 www.usa.siemens.com/powerdistribution