Benign Environment AC-DC Converters >400 W VRW-Family 150/200/300/450 W AC-DC Converters Single output Universal AC input: (VRW 200, VRW:300; VRW:450) *: 3000:-Ving input to: output electric:strength test -Compact:design Excellent lineload regulation e High: efficiency. Safety according to: |EC/EN: 60950 VRW-Family LGA Awa C : 2 2.6" 394 93) ed tah 15.5" Summary VRW 150 VRW 450 The VRW family of switching power supplies is a single out- put family of AC-DC converters. Compact size and high re- liability make the VRW family an excellent choice. Five standard single output ratings are available. All types have sense lines, the VRW 300 and VRW 450 provide also for inhibit function. The units are UL 1950 (D3), ULe und EN 60950 approved. Type Survey and Key Data Table 1: Type survey Key applications Factory automation, test and measurement, point-of-sales and communications equipment. Output configuration Output power Input:voltage Efficiency Type:designation Usien Isnom Tx = 40C range Typ Open:frame Chassis: cover [V:DG] [A] Po max [W] Ohimin- imax [%] 3 40 120 VRW 150: 68 VRW 200-03 VRW 200-03A 3 60 180 85...132 V AC 71 VRW 300-03 VRW 300-03A 5 30 150 or ee AC 78 VRW 150-05 VRW 150-05A 5 40 200 . - | ol 75 VRW 200-05 VRW 200-05A 5 60 300 Jumper selectable 76 VRW 300-05 VRW 300-05A 5 90 450 230...330 V DC 76 VRW 450-05 VRW 450-05A 12 13 150 80 VRW 150-12 VRW 150-12A 12 19 200 VRW 200, VRW 300 77 VRW 200-12 VRW 200-12A 12 26 300 VRW 450: 78 VRW 300-12 VRW 300-12A 12 40 450 85...265 V AC 78 VRW 450-12 VRW 450-12A 15 10 150 ene Oe 82 VRW 150-15 VRW 150-15A 15 15 200 es 78 VRW 200-15 VRW 200-15A 15 21 300 78 VRW 300-15 VRW 300-15A 15 32 450 78 VRW 450-15 VRW 450-15A 24 6.5 150 84 VRW 150-24 VRW 150-24A 24 9 200 81 VRW 200-24 VRW 200-24A 24 13 300 82 VRW 300-24 VRW 300-24A 24 20 450 82 VRW 450-24 VRW 450-24A 48 3.2 150 84 VRW 150-48 VRW 150-48A 1 Efficiency at Us rated aNd fy nom: Table of Contents Page SUMIMALY 0. eee cence ee eeneeeeenaeeeeeeeeeeneeeeeaeeeeneeeeenaeeeeeas Electromagnetic Compatibility (EMC) 0... ee 11-20 Type Survey and Key Datta .......eeeeeeeseeeereeeeeeeeees Immunity to Environmental Conditions.............0 11-22 Type Key and Product Marking Mechanical Data Electrical Input Data... ee eeeceeeeeeeesneeeeeneeeeeeeees Electrical Output Datta ....... eee eeeeeeesneeeeenneeeneeeees Safety and Installation Instructions 0.0.0... 11-25 Edition 3/3.98/IN 1.98 - Melcher AG 11-15VRW-Family AC-DC Converters >100 W Benign Environment Type Key and Product Marking Type Key VRW 450-12A FAMIIY ccessssccssecssssssessssssssesessesesssscesesseseseeeesssttsteeseens VRW | Nominal output power [W]............ 150, 200, 300, 450 Nominal output voltage [V] ....... ec eesseesseeeeesnreeeeees 05...48 Structure and connectors: OPEN FAME 00... cece ceteeenee cette eeeteeeetsaeeeneeeeeeas With chassis cover Example: VRW 450-12A = AC-DC converter providing 12 V/40 A, max. 450 W output, module with chassis cover Produkt Marking Type designation, applicable safety approval and recognition marks, CE mark, specific type designation, input voltage range, nominal output voltage and current and pin allocation. Label with batch no., serial no. and data code. Electrical Input Data General Condition: Ta = 25C unless otherwise specified Table 2: Input data Characteristics VRW:150-.. VRW:200-:. VRW:300-.: VRW:450-.. Unit Ui rated | Rated input voltage 100-120/200-240 100-120/200-240 VAC U; Input voltage range 85...132/170...265 1 85...265 230...330 3 - VDC fi Line frequency 47...440 47...63 Hz i Input current 2 100/200 V AC 3.0/1.5 4.0/2.0 6.2/3.1 A fine Inrush current 2 100/200 V AC 15/30 14/28 14/28 14/28 PF Power Factor? - 0.95 Fileak Leakage current 100/200 V AC 0.25/0.40 0.6/0.4 0.6/0.4 0.8/0.4 mA 1 Jumper selectable. 2 At U, rated and I nom- 3 Terminals A and B not connected. VRW 150: AC Input Voltage Range Selection The AC input voltage range can be selected by means of wiring at the connector barrier as per the following table: Table 3: Input vollage range selection Input voltage: range Terminals:A:and:B 85...132 V AC interconnected 170...265 V AC open 230...330 V DC (not connected) 11-16 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >100 W VRW-Family Electrical Output Data General Condition: Ta = 25C unless otherwise specified Table 4a: Output data 150 W types Characteristics VRW:150-05 VRW:150-12 VRW 150-15 Unit Us nom | Output voltage nom. 5 12 15 Vv Up agi | Adjustable voltage range +10 % Ionom Rated output current 30 13 10 A I Output current range min./max. 0...100 % Up Ripple-noise ' max. 120 150 150 mVpp AU,y_ | Line regulation Ui min--- Ui max +0.4 % AU, | Load regulation 0...100% +0.8 Odo Temperature coefficient max. +1 lot Output current limitation 2 105 Uy p Overvoltage protection * 5.75...6.75 13.8...16.2 17.3...20.3 Vv th Hold-up time 1 typ. 20 ms n Effciency ' typ. 78 80 82 % Output indicator not provided Outputs connected in series possible Outputs connected in parallel not possible $s Remote sensing possible R Remote shut-down not possible Table 4b: Output data 150 W types Characteristics VRW.150-24 VRW: 150-48 Unit Us nom | Output voltage nom. 24 48 Vv U, agi | Adjustable voltage range +10 % Ionom Rated output current 6.5 | 3.2 A I Output current range min./max. 0...100 % Up Ripple-noise ' max. 150 | 200 mVpp AU, yu | Line regulation Ui min. Ui max +0.4 % AU, | Load regulation 0...100% +0.8 Quo Temperature coefficient max. +1 lot Output current limitation 2 105 Usp Overvoltage protection ? 27 6...32.4 | 55.2...64.8 Vv th Hold-up time ' typ. 20 ms n Effciency 1 typ. 84 | 84 % Output indicator not provided Outputs connected in series possible Outputs connected in parallel not possible $s Remote sensing possible R Remote shut-down not possible 1 At Uj rated and I nom: 2 Operating in foldback method, automatic recovery. Overload for more than 30 seconds should be avoided. 3 Shut down of output. Turn-on by brief removal of the input voltage. Overvoltage protection is not adjustable. Edition 3/3.98/IN 1.98 - Melcher AG 11-17VRW-Family AC-DC Converters >100 W Benign Environment Table 4c: Output data 200 W types Characteristics VRW: 200-05 VRW: 200-12 VRW: 200-15 VRW: 200-24 Unit Us nom | Output voltage nom. 5 12 15 24 Vv Up agi | Adjustable voltage range +10 % Io nom Rated output current 40 | 19 | 15 | 9 A I Output current range min./max. 0...100 % Up Ripple-noise ' max. 150 | 180 | 180 | 240 mVpp AU, yu | Line regulation Uy min... Ui max +0. % AU, | Load regulation 0...100% Odo Temperature coefficient max. +1 lot Output current limitation 2 42.0...50.0 19.9...23.7 15.7...18.7 9.4...11.2 A Usp Overvoltage protection * 6.0...7.0 14.4...16.8 18.0...21.0 28.0...32.0 Vv th Hold-up time ' typ. 20 ms n Effciency 1 typ. 75 77 78 81 % Output indicator not provided Outputs connected in series possible Outputs connected in parallel not possible $s Remote sensing possible R Remote shut-down possible Table 4d: Ouiput data 300 W types Characteristics VRW:300-05 VRW: 300-12 VRW: 300-15 VRW: 300-24 Unit Us nom | Output voltage nom. 5 12 15 24 Vv Up agi | Adjustable voltage range +10 % Ionom Rated output current 60 | 26 | 21 | 13 A Iy Output current range min./max. 0...100 % Up Ripple-noise max. 150 | 180 | 180 | 240 mVpp AU,yu | Line regulation Uy min--- Uj max +0.4 % AU, | Load regulation 0...100% +0.8 Avo Temperature coefficient max. +1 lot Output current limitation 2 63.0...75.0 27.3...32.5 22.1...26.2 13.7...16.2 A Uy p Overvoltage protection * 6.0...7.0 14.4...16.8 18.0...21.0 28.0...32.0 Vv th Hold-up time 1 typ. 20 ms n Effciency 1 typ. 76 78 78 82 % Output indicator not provided Outputs connected in series possible Outputs connected in parallel not possible $s Remote sensing possible R Remote shut-down possible 1 At U, rated and lL nom: 2 Operating in foldback method, automatic recovery. Overload for more than 30 seconds should be avoided. 3 Shut down of output. Turn-on by brief removal of the input voltage. Overvoltage protection is not adjustable. 11-18 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >400 W VRW-Family Table 4e: Output data 450 W types Characteristics VRW.:450-05 VRW 450-12 VRW:450-15 VRW: 450-24 Unit Us nom | Output voltage nom. 5 12 15 24 Vv Uo agi | Adjustable voltage range +10 % Ionom Rated output current 90 40 | 32 | 20 A I Output current range min./max. 0...100 % Uy Ripple-noise ' max. 150 180 | 300 | 400 mVpp AU,u | Line regulation Uy min... Ui max +0.4 % AU, | Load regulation 0...100% +0.8 Odo Temperature coefficient max. +1 lot Output current limitation 2 94.5...103.5 42.0...46.0 33.6...36.8 21.0...23.0 A Uy p Overvoltage protection ? 6.0...7.0 14.4...16.8 18.0...21.0 28.0...32.0 Vv th Hold-up time 1 typ. 20 ms n Effciency 1 typ. 76 78 78 82 % Output indicator not provided Outputs connected in series possible Outputs connected in parallel not possible Remote sensing possible Remote shut-down possible 1 At U, rated and lL nom: 2 Operating in foldback method, automatic recovery. Overload for more than 30 seconds should be avoided. 3 Shut down of output. Turn-on by brief removal of the input voltage. Overvoltage protection is not adjustable. Sense Lines (S) Remote sensing provides compensation of voltage drops between power supply and load, caused by connectors and load feeding wires. The sense lines should consist of shielded cables or be twisted. If remote sensing is not re- quired, the +S should be connceted to the +V and the S to the V terminals respectively applying shortest possible links. The compensation range is 10% of Us nom. Output Voltage Adjustment The output voltage may be adjusted within +10% of Up nom by means of the internal potentiometer. The output voltage increases when the trimmer is turned clockwise. If the out- put voltage setting should be excessively high, the overvolt- age protection circuit may shut-down the output. Output Overvoltage Protection If the built-in overvoltage protection circuit becomes active, the output is shut down and a reset can only be achieved by brief removal of the input voltage after a minimum interval time. The overvoltage threshold level is not adjustable. Output Current Limitation An overload condition at the output should not last for more than 30 seconds. After removal of the overload, the current limitation circuit will automatically recover. Series Connection Two or more units supplying the same or different output voltages may be connected in series. The value of the maxi- mum output current to be taken is defined by that unit pro- viding the lowest current limiting value. It should be assured that the outputs do not feed backwards into each other caused by their different rise/fall times at switch-on/off cy- cles by adding reverse polarity diodes across each output. Parallel Connection Parallel connection of several identical modules is not pos- sible. Thermal Considerations The relation between the maximum allowed output power Po allwea, the temperature 7a of the surrounding air and the mounting method is given in the Installation Instruction. The P allowed IP, max 05129 | | | = 1.0 1 T t T r VRW 150 aN ~ VRW 200 SN ' 06 VRW 300, VRW 450 0.5 - 0 ' Tp -20 -10 0 10 20 30 40 50 60 70 [C] Fig. 1 Maximum allowed output power versus ambient tempera- ture with mounting method A percentage rates apply if the AC-DC converter is located in free, quasi-stationary air (convection cooling). The following figure shows the allowed output power of an AC-DC converter if mounting method A is used. For Po max Values see Type Survey and Key Data. The ther- mal conditions are influenced by input voltage, output cur- rent, airflow and temperature of surrounding components and surface. Caution: The installer must ensure that under: all:operat- ing: conditions: Fa: remains: within: the: limits stated: in: the table. Edition 3/3.98/IN 1.98 - Melcher AG 11-19VRW-Family AC-DC Converters >100 W Benign Environment Inhibit (R, VRW 200, VRW 300 and VRW 450 series) The output may be enabled or disabled by means of a logic Table 5: Inhibit characteristics signal (TTL, CMOS etc.) or a mechanical contact applied to the inhibit input which is isolated from input and output by means of an opto-coupler. This provides independency from other voltages polarity. If the inhibit function is not re- quired, connect the inhibit input +R to return pin R to en- Characteristic Conditions mins type omax |: Unit Unn [Inhibit | U,=on | Uimin...Ujmax | 0.7 08 | V voltage | 1), off 20 7 finn | Inhibit sink curr. | Uinn =O mA able the output (active low logic, fail safe). L TO 7 finn OL +R I I | Yin I I ? N R Oo Fig 2 SOtsti<< 2C#zRSS~ Definition of inhibit voltage and current Electromagnetic Compatibility (EMC) Electromagnetic Immunity A metal oxide VDR together with an input fuse and an input filter form an effective protection against high input transient pecially in battery driven mobile applications. The VRW family has been successfully tested to the following specifi- voltages which typically occur in most installations, butes- cations: Table 6: Immunity type tests Phenomenon:::} Standard: | Level Coupling Value Waveform Source Test In Per- mode? applied Imped. procedure oper. |form:? Electrostatic IEC/EN x | contact discharge) 5000 V, 1/50 ns 330 Q 10 positive and yes A discharge 61000-4-2 air discharge 10000 V, 10 negative (to case) discharges Electromagnetic | IEC/EN x antenna 12 Vim AM 80% 26...1000 MHz yes A field 61000-4-3 1 kHz Electrical fast IEC/EN x i/c, +i/i 2400 V, |bursts of 5/50 ns} 502 1 min positive yes A transient/burst | 61000-4-4 5 kHz rep. rate 1 min negative transients with bursts per 15 ms burst coupling mode duration and a 300 ms period Surge IEC/EN x i/c 4000 V, 1.2/50 us 12Q | 5pos.and5neg. | yes A 61000-4-5 x +i/-i 2400 V> 20 surges per coupling mode Conducted IEC/EN Xx i, 0 12 Vims AM 80% 150 Q 0.15...80 MHz yes A disturbances 61000-4-6 1 kHz 1 For related and previous standards see Technical Information: Safety & EMC. 2 | = input, o = output, c = case. 3 A= Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible. 41-20 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >400 W VRW-Family Electromagnetic Emission [dBuV] 90 07096 80 70 60 50 40 30 20 10 MHz 0.01 0.02 0.05 0.1 0.5 20 30 Fig. 3 Typical disturbance voltage (quasi-peak) at the input ac- cording to CISPR 11/22 and EN 5501 1/22, measured at Ui rated AN Io nom for VRW 150-12. [dBuV] 90 07094 80 70 60 50 40 30 20 10 0 x N o e2 oO oO Fig. 5 Typical disturbance voltage (quasi-peak) at the input accor- ding to CISPR 11/22 and EN 55011/22, measured at Ui rated 4nd Ip nom for VRW 300-24 with input filter, U; = 200 V AC. MHz 0.05 0.1 0.5 20 30 [dV] 90 07093 80 70 60 50 40 30 20 10 0 x N o 98 oO oO Fig. 4 Typical disturbance voliage (quasi-peak) at the input accor- ding to CISPR 11/22 and EN 55011/22, measured at Uj rated and |b nom for VRW 200-24 with input filter, U, = 200 V AC. MHz 0.05 0.5 20 30 ~ o [dV] 90 07095 80 70 60 50 40 30 20 10 0 - N o 8 oO oO Fig. 6 Typical disturbance voliage (quasi-peak) at the input ac- 44 cording to CISPR 11/22 and EN 55011/22, measured at a4 Up rated AN Io nom for VRW 450-05, U, = 200 V AC. MHz 0.05 0.1 0.5 20 30 Edition 3/3.98/IN 1.98 - Melcher AG 11-24VRW-Family AC-DC Converters >100 W Benign Environment Immunity to Environmental Conditions Table 7: Mechanical stress Test: Method Test-conditions Status Damp heat Temperature: 40 #2 C Operating steady state Relative humidity: 30...90 3/42 % Shock (half-sinusoidal) Acceleration amplitude: 20 gn = 196.2 m/s? Operating Vibration (sinusoidal) Frequency (1 Oct/min): 10...55 Hz Operating Maximum vibration amplitude: 0.83 mm (55 Hz) Acceleration amplitude: 2 gn = 19.6 m/s? Test duration: 3h (1h each axis) Table 8: Temperature specifications Characteristic min max Unit Th Operating ambient temperature range without derating -10 40 C Operating ambient temperature range with derating (with mounting method 4) -10 60 Ts Storage temperature range -30 85 Table 9: MTBF values MTBF Type Ground Benign Te = 25C According to MIL-HDBK-217D VRW 150 121'830 h VRW 200 75'789 h VRW 300 60'334 h VRW 450 52'347 h 41-22 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >100 W VRW-Family Mechanical Data eenan" pB Dimensions in mm. Tolerances +1 mm unless otherwise indicated European Projection 09082 of | 6 co cu | 450 Qa ene _@- @ |\ms3 +t ua/' 3 a8 8 M3 19 @ 9-22-54 i i 3 M8 iy 0 = | oo nN re 100 #05 80 a 19 198 LED (on) qd Ma M4 Uo adjustment / Sf (Potentiometer) oO -O@- i-: Output: +V | Output: +V a Sense: +S a] Sry M4 (screw length max. 6 mm) M4 Frame ground: FG 1 if Sense: -S c O- ~ OS al: AC input: L | | A AC input: N : 230 V AC: open A i 125 +0.5 ; 40 110 V AC short B Fig. 7 VARW 150, weight 890 g 48.5 . 152.5 Uo adjustment (Potentiometer) 1381). 57 $0 | Lo oO -L V -% Wha 2-550 ~ EO = > st | -V b..4 | _ | 5 v~ 0 M4 +S Sense so l3 | H 9 -S Sense 18 i OF +R Inhibit | | -R Return for +R M4 | gy t L AC input | |_\ _ + NAC input foe i L 28 |! 152 40.5 | | 1 233 Fig. 8 VRW 200, weight 1500 g, with cover 1610 g Edition 3/3.98/IN 1.98 - Melcher AG 41 - 23VRW-Family AC-DC Converters >100 W Benign Environment Tt ' ] | os .f..-.-. | ina EO s ji @}-- - + | LL | oe 0 i 55 +S Sense H z | -S Sense | \ +R Inhibit i R Return for +R M4 (screw length max. 6 mm) 4 L AC input | LID+ N_ AC input < -L.-.-.L. 4 eo : 1 11,4 | 247 +405 Hs I T 298 +1 Fig. 9 VARW 300, weight 2200 g, with cover 2450 g : 266.7 20.5 19 | | 09085 | 139.7 405 | | * : e 5 7 wor M4 | M4 Yo Uo adjustment (Potentiometer) 65 eaeeressor, were 2-143 lo ma no SY | -[L.t N - |9 | ~ a +S Sense S/S -S Sense i a : M4 | th 6 +R Inhibit (screw length max. 6 mm) R Return for +R oe. L AC input = Leo NAC input ; | a | . = i 324 +10.5 5 ~ 394 +1 ! Fig. 10 VRW 450, weight 2800 g, with cover 3060 g 11-24 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >400 W VRW-Family Safety and Installation Instructions Installation Instructions Our AC-DC converters are components, intended exclu- sively for inclusion within other equipment by an industrial assembly operation or by professional installers. Installation must strictly follow the national safety regulations in compli- ance with the enclosure, mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application. See also Technical Information: instal- lation and Application. Connection to the system shall be made via the terminal block at the rear side of the unit according to Terminal As- signment. For safety reasons it is essential to connect the FG and ACG terminals with protective earth. See also Safety of op- erator accessible output circuit. A fuse is built-in in the connection from the L terminal of the unit. Since this fuse is designed to protect the unit in case of an overcurrent and does not necessarily cover all customer needs, an external fuse suitable for the application and in compliance with the local requirements should be installed Mounting Methods in the wiring to the phase terminal L. A second fuse in the wiring to the neutral terminal N is needed if: * Local requirements demand an individual fuse in each source line * Neutral and earth impedance is high or undefined * Phase and neutral of the mains are not defined or cannot be assigned to the corresponding terminals (L to phase and N to neutral) Important::Do:not:open:the: modules: or guarantee will be:invalidated: Make sure that there is sufficient air flow possible for con- vection cooling. This should be verified by measuring the ambient temperature when the unit is installed and oper- ated in the end-use application. The maximum specified ambient temperature 7a max Must not not be overriden, de- pending on output power and mounting method. See Ther- mal Considerations and table Allowed output power by mounting method. 10080 Mounting A Mounting B Mounting C Mounting D standard Fig. 117 Mounting instruction for VRW 150 Table 10a: Allowed output power by mounting method open frame for VRW 150 Ta max Load Po allowed! Po max [%] " [eC] Mounting:A Mounting: B Mounting GC Mounting: D 30 100% 100% 100% 100% 40 100% 100% 100% 80% 50 100% 80% 80% 60% 60 50% 40% 40% 40% Table 10b: Allowed output power by mounting method with chassis cover for VRW 150 Trimax Load: P; aicwedl Pe max [%]:? [C] Mounting A Mounting: B Mounting :C Mounting: D 30 100% 100% 100% 100% 40 100% 70% 70% 70% 50 80% 60% 60% 60% 60 40% 40% 40% 40% 1 For Po max Values see Type Survey and Key Data Edition 3/3.98/IN 1.98 - Melcher AG 41-25VRW-Family AC-DC Converters >100 W Benign Environment 10081 wh VITHTITITIMITITIIT LEE T77THTITIIIIIL LTD Mounting A Mounting B Mounting A Mounting B without cover without cover with cover with cover Fig. 12 Mounting instruction for VRW 200, VRW 300, VRW 450 Table 11: Allowed output power by mounting method open frame for VRW 200 Table 12: Allowed output power by mounting method with chassis cover for VRW 200 Tamax Load Po sticwed! Po max [9]! Tamax Load Py sitcwad/ Po max [el [C] Mounting A Mounting: B [eG] Mounting:A Mounting: B Convection 40 100% 90% Convection 40 80% 80% cooling 50 80% 70% cooling 50 60% 60% 60 60% 50% 60 - - Forced air 50 100% 90 % Forced air 40 100% 90 % cooling 60 80% 70% cooling 50 80% 70% 70 60% 50% 60 60% 50% Table 13: Allowed output power by mounting method open frame for VRW 300 and VRW 450 Table 14: Allowed output power by mounting method with chassis cover for VRW 300 and VRW 450 Tx max Load P35 siiswed! Po max [%l! Taniax Load :Ps siicwed! Po max [%k! [C] Mounting:A Mountiig:B [?C] Mounting:A Mounting: B. Convection 40 100% 90% Convection 40 80% 80% cooling 50 75% 75% cooling 50 60% 60% 60 50% 50% 60 - - Forced air 50 100% 90% Forced air 40 100% 90% cooling 60 75% 75% cooling 50 75% 75% 70 50% 50% 60 50% 50% 1 For Po max Values see Type Survey and Kay Data. 41-26 Edition 3/3.98/IN 1.98 - Melcher AGBenign Environment AC-DC Converters >400 W VRW-Family Standards and approvals The AC-DC converters correspond to class | equipment and are UL recognized according to UL 1950, UL recog- nized for Canada to CAN/CSA C22.2 No. 950-95 and LGA approved to IEC/EN 60950 standards. The units have been evaluated for: * Building in, * Basic insulation between input and frame and double or reinforced insulation between input and output, based on their maximum input voltage. * Operational insulation between output and frame, * The use in a pollution degree 2 environment, * Connecting the input to an overvoltage category II circuit if >150 V or an overvoltage category III circuit if <150 V. The AC-DC converters are subject to manufacturing sur- veillance in accordance with the above mentioned UL, CSA, EN and with ISO 9001 standards. Safety of operator accessible output circuit If the output circuit of an AC-DC converter is operator ac- cessible, it shall be an SELV circuit according to the IEC/EN 60950 related safety standards The following table shows a possible installation configura- tion, compliance with which causes the output circuit of the AC-DC converter to be an SELV circuit according to IEC/EN Table 16: Safety concept leading to an SELV output circuit Isolation The electric strength test is performed as factory test in ac- cordance with IEC/EN 60950 and UL 1950 and should not be repeated in the field. Melcher will not honour any guar- antee claims resulting from electric strength field tests. Table 15: Isolation Characteristic Input-to:):Inputte::| Output to) Unit frame output frame Electric strength 2.0 3.01 0.5 kVims test voltage 1s 28 431 07 kV DC Insulation resist. >100 >100 >100 MQ at 500 V DC 1 In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage. Protection Degree The protection degree of the AC-DC converters is IP 20, exept in the vicinity ot the terminal block, where it depends on the installation. 60950 up to a configured output voltage (sum of nominal voltages if in series or +/- configuration) of 44 V. However, it is the sole responsibility of the installer to as- sure the compliance with the relevant and applicable safety regulations. More information is given in Technical Informa- tion: Safety. Gonditions AC-DC. converter: Installation Result Grade of:isolation,: provided by the AG-DC. converter Supply:voltage Measures: to:achieve:the: resulting Safety status: ofthe: output circuit Safety. status of: the: AG-DC converter output circuit Mains <250 V AC | Double or reinforced Earthed frame SELV circuit Fuse t ~ + Mains Fuse 1 AC-DC : SELV ~ con- - ' verter | Earth connection Fig. 13 Schematic safety concept Use fuses and earth connection as per Installation Instruc- tions and table Safety concept leading to an SELV output circuit. Table 17: Safety approvals Safety: Approvals UL ULe LGA VRW 150 UL 1950 | CSA 950 IEC/EN 60950 VRW 200 UL 1950 | CSA 950 IEC/EN 60950 VRW 300 UL 1950 | CSA 950 IEC/EN 60950 VRW 450 UL 1950 | CSA 950 IEC/EN 60950 Edition 3/3.98/IN 1.98 - Melcher AG 41-27