ATO-JVR800 3 Phase Voltage Monitoring Relay

3 phase voltage monitoring relay with LCD display is used to monitor phase loss, phase sequence, voltage unbalance, overvoltage and undervoltage in the 3-phase power supply of 208-480V AC 50/60Hz. The monitoring relay is widely applied in the applications like air compressors, electric motors, pumps, fans, air-conditioning system, blowers, lifts, elevators, cranes, refrigeration units, mining excavators and conveyors, etc. As a large scale relay distributor in China, ATO as a manufacturer offers high accuracy and factory price three phase voltage monitoring relay for you, shop now!

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Features:

  1. Compact size in DIN rail mounting.
  2. Microprocessor technology provides highly accurate and repeatable protection.
  3. LCD display and keypad afford a precise digital setting.
  4. Adjustable overvoltage and undervoltage, phase unbalance threshold.
  5. Independent adjustable delay time for overvoltage, undervoltage, voltage unbalance, phase loss and phase sequence.
  6. Adjustable reset method: automatic reset or manual reset.
  7. Start delay. (power-on delay)
  8. Monitoring relay with 1 CO & 1 NC contacts.
  9. With timer and counter for running and faults.

Specification:

Model ATO-JVR800-2
Measuring Circuit 3-Phase AC: L1, L2, L3
Monitoring Functions Phase Sequence (Reversal), Phase Loss (Failure)
Overvolatege, Undervoltage, Voltage Unbalance (Asymmetry)
Timer & Counter
Rated Voltage 208-480V AC, 50/60Hz
Overvoltage Setting Range 200-600V
Undervoltage Setting Range 150-500V
Voltage Hysteresis 1-20V
Delay Time for Overvoltage & Undervoltage 0.1-30s
Voltage Unbalance Ratio 1-50%
Voltage Unbalance Hysteresis 1-10%
Delay Time for Voltage Unbalance 0.1-30s
Delay Time for Phase Loss 0.1-30s
Delay Time for Phase Sequence 0.1-30s
Power On Delay Time 0-999s
Reset Mode Manual/Auto
Delay Time for Reset 0.1-999s
Timer and Counter Input AC/DC 80-450V
Indicator LCD indicating voltage, fault and operation status
Output Contacts 1 CO + 1 NC
Contact Capacity 6A, 250V AC (resistive load)
Degree of Protection IP 20
Mechanical Durability 1,000,000 cycles
Dielectric Strength ＞2kVAC 1min
Mounting 35mm DIN rail
Certification CE
Weight 130g
Dimensions (H*W*D) 80*43*54mm
Certification CE

Wiring Diagram:

3 phase voltage monitoring relay wiring diagram

Dimension: (Unit: mm)

3 phase voltage monitoring relay dimension

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