Type: MXPRT M X Se r i e s Phase Failure, Phase Sequence and Under Voltage plus Time Delay 17.5mm DIN rail housing True R.M.S. Microprocessor based (self checking) Monitors own supply and detects an Under voltage condition on one or more phases Measures phase to phase voltages Detects incorrect phase sequence and phase loss Adjustment for under voltage trip level Adjustment for time delay (from an under voltage condition) 1 x SPDT relay output 8A Intelligent LED indication for supply and relay status * FUNCTION DIAGRAM Phases reversed L1 L2 L3 Hyst. Under trip Output Td t t tr Td time delay automatically cancelled as phase drops below 2nd trip point * INSTALLATION AND SETTING * * BEFORE INSTALLATION, ISOLATE THE SUPPLY. Installation work must be carried out by qualified personnel. Connect the unit as required. The Connection Diagram below shows a typical installation, whereby the supply to a load is being monitored by the Phase monitoring relay. If a fault should occur (i.e. fuse blowing), the relay will de-energise and assuming control of the external Contactor, de-energise the Contactor as well. Applying power. * Set the adjustments "<U"[ and the "Delay (t)"Z to minimum. * Apply power and the green "Power supply"X and red "Relay"Y LED's will illuminate, the relay will energise and contacts 15 and 18 will close. Refer to troubleshooting table if the unit fails to operate correctly. Setting the unit. * Accurate setting can be achieved by adjusting the trip level "<U" until the unit trips (relay de-energises) then by decreasing the trip level "<U" setting until the relay re-energises. By close setting of the trip level, the unit will also detect a phase loss even with a large percentage of re-generative voltage. In order to set the unit as previously described but without causing disruption to the equipment being controlled/monitored, set the "Delay (t)" to maximum. It will now be possible to establish the trip point when the red "Relay" LED starts to flash. Decrease the trip level setting to stop the LED flashing. (Note: If the time delay is allowed to expire, the output relay will de-energise) If large supply variations are anticipated, the trip level should be set further from the nominal voltage. Set the "Delay (t)" as required. (Note that the delay is only effective should the supply drop below the set trip level. However, if during an under voltage condition the supply drops below the 2nd under voltage trip level, any set time delay is automatically cancelled and the relay de-energises). Note: If the supply voltage increases above the maximum "<U" trip setting by approx. 10% or more, the relay will de-energise immediately. * * * Supply / monitoring voltage U* (L1, L2, L3): * CONNECTION DIAGRAM L1 Local Fuse Board Green LED On Flashing On On On Red LED Off Off Flashing Off Off Relay De-energised De-energised Energised for set delay (t) De-energised De-energised * SETTINGS X 1. Power supply status (Green) LED. 2. Relay output / Timing status (Red) LED. 3. "Time delay" adjustment. 4. "<U" Under trip level adjustment L2 L3 Supply / Monitored Voltage Contactor L1 L2 Z L3 15 16 18 Phase monitor Y *Please state Supply / monitoring voltage when ordering 4kV1 (1.2 / 50S) IEC 60664 8VA max. Trip levels: Voltage range: 77 - 143V AC 161 - 300V AC 280 - 520V AC Under [2] fixed 2%: 77V 161V 280V Hysteresis: Setting accuracy: Repeat accuracy: Immunity from micro power cuts: Response time: Time delay (t): Under (adjustable): 83 - 138V 173 - 288V 300 - 500V 2% of trip level (factory set) 3% 0.5% @ constant conditions <50 mS 50 mS 0.2 - 10 sec ( 5%) Note: actual delay (t) = adjustable delay + response time Delay from phase loss (tr): Power on delay (Td): 150 mS (worst case = tr x 2) 1sec. (worst case = Td x 2) Ambient temp: Relative humidity: -20 to +60C +95% Output (15, 16, 18): Output rating: SPDT relay AC1 250V 8A (2000VA) AC15 250V 5A (no), 3A (nc) DC1 25V 8A (200W) 150,000 ops at rated load 2kV AC (rms) IEC 60947-1 Electrical life: Dielectric voltage: Rated impulse withstand voltage: Housing: Weight: Mounting option: Terminal conductor size: The table below shows the status of the unit during a fault condition. 77- 143V AC 161 - 300V AC 280 - 520V AC1 48 - 63Hz Over voltage cat. III Frequency range: Isolation: Rated impulse withstand voltage: Power consumption: Troubleshooting. Supply fault Phase missing Phases reversed (no delay) Under Voltage condition (during timing) Under Voltage condition (after timing) Phase below 70% of Un (fixed under trip level [2]) Terminal Protection to IP20 * TECHNICAL SPECIFICATION Monitored 3~ Supply Fixed Under trip [2] Dims: to DIN 43880 W. 17.5mm Approvals: 4kV (1.2 / 50S) IEC 60664 Orange flame retardant UL94 VO 70g On to 35mm symmetric DIN rail to BS5584:1978 (EN50 002, DIN 46277-3) Or direct surface mounting via 2 x M3.5 or 4BA screws using the black clips provided on the rear of the unit. 2 x 2.5mm2 solid or stranded Conforms to IEC. CE and and RoHS Compliant. EMC: Immunity: EN/IEC 61000-6-2 (EN/IEC 61000-4-3 15V/m 80MHz - 2.7GHz) Emissions: EN/IEC 61000-6-4 Options: 1. The unit is also available with a double-pole relay output. Refer to separate data sheet for Mxprt/2. * MOUNTING DETAILS 89 (excl. clips) 45 Insert screwdriver to release clips Example on the left shows the scale on the 280 - 520V version. 49 59 [ Withdraw clips fully when surface mounting 93 (+/- 1mm) Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user's own risk. MXPRT-2-A 012374