Used in air conditioning units, elevator machine room, pumps, fans and other motor control applications, as protection of over-volltage. Under voltage, phase failure, phase sequence, phase imbalance and PTC temperature. When the power supply is abnormal, turn off power supply to protect the equipment.
Built-in microprocessor, true RMS measurement, measurement accuracy≤ 1%. 50/64Hz universal, knob setting, LED indicator shows working status. Withe N-phase phase failure protection, unique load-side and PTC temperature protection, optional manual reset and key test function, DIN rail mounting.
Model Selection Table
1. "+"Function is available, "-"Function is not availble. "○ "Function can be customized.
2. In three-phase four-weire circuit, relay without phase sequence protection could acheive sigle-phase or two-phase protection.
3. Choose either PTC protection or load protection.
4. Load protection: L1/L2/L3(P-P).
ZHRV1-04/A380 voltage relays, rated coltage AC 380V with phase failure, phase sequence, over-voltage protection. Adjustable over-voltage range(1.05-1.3)Ue, under-voltage range(0.7-0.95)Ue, unbalance protection range(5%-15%)Ue, action delay time 0.1s to 10s.