ZHRV3-07 Undervoltage Relay

ZHRV3-07 undervoltage relay; Rated supply frequency, 50/60Hz ; Measuring range, AC 166V -528V ; AC 96V- 329V ; Measurement frequency range, 45Hz~65Hz ;

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Applications of ZHRV3-07 Voltage control relay


Used in air conditioning units, elevator machine rooms, pumps, fans, and other motor control applications, as protection of over-voltage,  under  voltage, phase failure, phase sequence and phase unbalance. When the power supply is abnormal, turn off the power supply to protect the equipment.

Features of ZHRV3-07 Voltage control relay

Built-in microprocessor, true RMS measurement, measurement accuracy ≤1%.knob setting, LED indicator showing working status.Use(magnetic latching)relay to achieve products low-power. DIN rail mounting.

Specification of ZHRV3-07 Voltage control relay

Rated supply voltage AC 3×220V→3×460V
Operating voltage range AC 187V~529V
Rated supply frequency 50/60Hz
Voltage range 220-230-240-380-400-415-440-460 (M)
Measuring range AC 176V→552V
Measurement frequency range 45Hz~65Hz
Phase failure and phase sequence action time < 0.5s
Action delay 0.1s~10s
Fixed hysteresis rate 2% of rated operating voltage
Voltage measurement error ≤1% (Entire setting range )
Delay error ±10%+0.1s
Knob setting accuracy 1% scale value
Rated insulation voltage 460V
Contact configuration capacity(A) 8A
IP Class IP 20
Class of pollution
Electrical Life 105
Mechanical life 106
Altitude ≤2000m
Allowable relative humidity ≤50% ( 40°C ) (No condensation )
Use category AC-15
DIN rail Standard Ue/Ie : 250V/1.5A
Contact capacity 1 C/O
DIN rail Standard width 35mm (IEC/EN60715)