LWRA220A Crouzet

CONTROLS CONTROLS WRL SERIES PHASE CONTROL RELAY UL listed CSA recognized Monitors Phase Sequence Loss of Any Phase even if Induced Voltage reaches 95% of Nominal Voltage Under Voltage Detection Trip Delay Timer Built-in LED Relay Status Indicator 2 MODE OF OPERATION: The WRL Phase Control Relay monitors the sequence loss or reversal of three phase power supplies. The output relay is energized when the phase sequence is correct and the phase voltage is above the voltage threshold set by the front knob. The output relay will de-energize after 2 seconds (built-in timer) when the phase voltage drops under the voltage threshold or when phase sequence is lost. The WRL Series is available in three voltage ranges: 230 VAC, 380 VAC and 480 VAC. SPECIFICATIONS: WIRING DIAGRAM: Input Power . 3 x 230 (50/60 Hz) 3 x 380 (50/60 Hz) 3 x 480 (50/60 Hz) Maximum voltage 3 x 280 VAC 3 x 420 VAC 3 x 530 VAC Minimum voltage 3 x 160 VAC 3 x 260 VAC 3 x 340 VAC Threshold adjustment range . 160 to 230 VAC 260 to 380 VAC 340 to 480 VAC Max power consumption 2 VA Dial accuracy . 10% Temperature De-rating 0.04%/C Dead Band . 4% of 480 VAC Response Time 300 ms on Make 2 sec on Break Output SPDT Version (WRL) Series) . 10 Amp 250 VAC Max. power consumption 2000 VA Max. voltage 250 VAC 7 Electrical life 2 x 10 operations 6 Mechanical life 1 x 10 operations Operating temperature -10C to +60C Weight . 3.5 oz. (100g) ORDERING INFORMATION: D WRL 230A MOUNTING SERIES INPUT POWER INPUT POWER MOUNTING SERIES 230A = 3 x 230 VAC L = 11 pin plug-in WRL = SPDT Version 380A = 3 x 380 VAC P = 8 pin plug-in 480A = 3 x 480 VAC Products and specifications subject to change without notice. Order/Technical Support Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com 2/81CONTROLS CONTROLS WRA SERIES PHASE CONTROL RELAY UL listed CSA recognized (220 VAC Version Only) Monitors Phase Sequence Loss of Any Phase even if Induced Voltage reaches 95% of Nominal Voltage LED Relay Status Indicator SPDT 10 Amp Relay Output MODE OF OPERATION: WIRING DIAGRAM: R S T R T S R S T R S NR ST T R = L1 S = L2 T = L3 R D1 11 RS T The WRL Phase Control Relay monitors the sequence loss or reversal of three phase power supplies. The output relay is energized when the phase sequence is correct and is de-energize when the phase 12 14 sequence is wrong or one phase is lost. It monitors the symmetry of 3 voltages and a loss of phase even when the voltage is reinjected through a machine. The rate of asymmetry is controlled between 5% STOP and 15% by a top mounted potentiometer. d1 U V W SPECIFICATIONS: START Input Power Directly 3 x 220 60 Hz from controlled voltage 15% 3 x 380 60 Hz 3 x 440 60 Hz M Power consumption . 3 VA at 220 V Output . SPDT relay Contact material . AgCdO Maximum Loading . 10 AC resistive 8A DC inductive Maximum switching voltage 250 VAC 250 VDC Relay max. power rating . 220 VA 80 W DWRA 11 12 14 R S T 6 Mechanical life of relay 30 x 10 operations 5 Electrical life of relay 2 x 10 operations at 2200VA resistive load LWRA 1 4 3 5 6 7 Operating temperature +14F to +140F -10C to +60C Weight . 7 oz. (200g) PWRA 1 2 8 3 4 5 Note: The alarm threshold adjustment is 5% to 15% of asymmetry between the phases. The initial response time is .1 seconds at 5% asymmetry and 1 second at 15% after input power is applied. When a phase loss or failure occurs, the off delay response time is 100 ms. ORDERING INFORMATION: L WRA 380 A MOUNTING SERIES INPUT POWER INPUT POWER MOUNTING SERIES 220A = 3 x 220 VAC D = DIN-rail mounting WRA 380A = 3 x 380 VAC L = 11 pin plug-in 440A = 3 x 415/440 VAC P = 8 pin plug-in Products and specifications subject to change without notice. Order/Technical Support Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com 2/82