Door Mounting Three Phase Voltage Monitoring Relays, Manufacturer, Supplier, Exporter, Proton Power Control, Pune, Maharashtra, India

Voltage Monitoring Relay Three Phase MODEL: VMR-3P

Protection of 3 Phase devices against Over voltage, Under voltage,Single Phasing, Reverse Phasing & unbalance supply are one of the major issue in electrical systems. For safe running of 3-phase devices, special protections that keep a continuous watch on supply conditions are very essential. The major cause of maximum load burn-out is overloading which occurs due to unbalance supply, Single Phasing & Reverse Phasing conditions. VMR3P detects such Conditions & protect the load from burn out. 'PROTON's VMR 3P' offer above protections along with 3 digit display showing R-Y,Y-B,B-R voltages in scanning mode with precise accuracy. LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads.

  • Mounting: Door Mounting
  • Supply voltage: 3 Phase 415 VAC, 50 Hz (R, Y, B & N) (Additional auxiliary supply not required)
  • Output Contacts: Two SPDT (C-NO-NC) Relay, Rating 5A at 230V AC
  • Indications:
    1) SPP- RED LED
    2) Over voltage- RED LED
    3) Under voltage- RED LED
    4) Relay ON - Green LED
  • Relative Humidity 10 to 95% RH
  • Mounting: Flush
  • ON Delay: 1- 60 sec
  • Cutout: 92 X 92 W
  • Dimension : 96 X 96
  • Display : 7 Segment LED 3 digit
  • Voltage trip setting:
    1) Lower limit is 340 for Under Voltage Upper limit is 460 volts for over Voltage (Resolution of 1V)
    2) Hysteresis bet cutoff & cutin is 10 V


  • Micro controller based technology.
  • Protection against under voltage, Over voltage.
  • All set points settable by keys.
  • Trip Delay is settable
  • Reverse Phasing Protection can be bypassed through settings.
  • Indications Voltage relay, fault relay ON.
  • Message display for Under/Over Voltage./SPP

  • Electrical Panels.
  • Electrical Test benches
  • Genset panels
  • Package unit and central air conditioning plants.
  • Compressor motors.
  • Submersible pumps
  • Cold storage's

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