Unit trips on loss of any Phase L1, L2 or L3, regardless of any regenerative voltages.
Phase Reversal (Out-of-Sequence)
Unit trips if sequence (rotation) of the three phases is anything other than L1-L2-L3.; It will not work on L3-L2-L1.
Phase Unbalance
Adjustable from 5 - 25% unbalance or can be disabled. Unit trips when any one of the three lines deviates from the average of all three lines by more than the adjusted set point for a period longer than the adjustable trip delay.
Time Range
Trip delay, fixed 100 ms
Accuracy
≤5%; Repeat accuracy, ±2%; Temperature influence, ≤0.05% / °C
Output Contacts
SPDT 5A @250V AC
Life
Mechanical - 20,000,000 operations; Electrical - 200,000 operations at 1000 VA resistive load
Temperature
Operating, -25 to +55°C (ambient temperatures above 40°C, a side distance to other units of 5 mm must be observed).; Storage, -25 to 75°C
Humidity
-15% to 85%
Mounting
Mounts on 35mm DIN-rail
Termination
1 x #14-20 AWG; 2 x #16-20 AWG; Recommended tightening torque of 0.7 ft.lb. (1 Nm) maximum
Weight
Single packing, 0.16 lb (72 g)
Series Features
PBDU Series PHASE LOSS, PHASE REVERSAL & PHASE UNBALANCE
Series Description:The PBDU Series Phase Monitor Relays protect motors and equipment from damage due to voltage faults on three-phase systems. PBDU relays monitor phase loss, phase reversal, and unbalance. Phase unbalance is adjustable from 5% to 25%, and can be disabled altogether if desired.
The compact 17.5 mm enclosure for DIN-rail mounting conserves space and reduces installation time.
LED status indication is located on the front face. Green indicates Power ON. Yellow indicates relay status. Any of the three fault conditions will de-energize the relay after a fixed trip delay of 100 ms. Re-energization is automatic upon correction of the fault condition.
Monitored voltage is universal: 208V - 480V AC.
Protects against phase loss, phase reversal and phase unbalance
Compact 17.5 mm wide enclosure for DIN-rail mounting
Universal voltage range: 208 - 480V AC
LED status indication on front face for easy troubleshooting
RoHS Compliant