Proton Power controls

Three Phase Correction Relay Model: PCR-3P-PR16

Phase Correction Relays, Phase Sequence Correction Relays, Phase Sequence Correctors, Automatic Phase Sequence Correction, Manufacturer, Supplier, Exporter, Pune, Maharashtra, India

Three Phase Correction Relay
Three Phase Correction Relay

'PROTON's PHASE CORRECTOR RELAY' offer following protections along with 3 digit display showing R-Y,Y-B,BR voltages in scanning mode with precise accuracy.
LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads. Single phasing & Unbalance protection. Phase correction RELAY 'R2' which operates only when phase sequence changes.



  • Supply voltage : 3 Phase 415 VAC, 50 Hz (R, Y, B &N) (No auxiliary supply)
  • Output Contacts : L1-Normal Sequence, L2 Reverse Phase Sequence
  • Indications : FAULT (UV, OV): RED LED,
  • RELAY ON : GREEN LED
  • Relative Humidity : 10 to 95% RH
  • Mounting : Din Rail
  • Dimensions : 55(W) X 75(H) X 110(D) mm.
  • Keys :
  • SET : SET key, Press to enter into SET Mode
  • INC : Upward Arrow key, Press to increment the set point.
  • DEC : Downward Arrow key, To Decrement the set point.
  • Working :
  • 1] If the Input supply is within the range of the fault limits then On Timer starts decrementing on display & after Set On Time over Relay will be ON with RLY indication glowing.
  • 2] If OV, UV, Spp, Unbalance occurs in the supply then Relay will be OFF after the trip delay of that particular fault.
  • 3] If any Phase to Phase Voltage increases above OV set point, Relay will trip after trip delay (<100 ms) over. If that particular phase to phase voltage reduces below (OV set point - 10 V), Relay will be ON after the set reset delay over.
  • 4] If any Phase to Phase Voltage increases/reduces Above/below the UB set point compared to other two Phase to Phase voltages, Relay will trip after set trip delay over. If that particular phase to phase voltage reduces/increases below/above (UB set point -/+ 10 V), Relay will be ON after the set reset delay over
  • 5] If any of the Phase fails, Relay will trip after trip delay (<100 ms) over. If all phases are present, Relay will be ON after the set reset delay over.
  • 6] If Phase sequence is changed to R-B-Y/Y-R-B/B-R-Y, Relay (R2) will be ON. If phase Sequence is corrected to R-Y-B, Relay (R1) will be ON after the set reset delay over. UB/SPP, UV, OV.
  • Microcontroller based technology.
  • Protection against under voltage, over voltage, Single Phasing & Reverse Phasing.
  • All the set points settable by keys.
  • Trip Delay for Under Voltage, Over Voltage, Unbalance is settable
  • Indications for Low voltage, High Voltage, R2 & R1 Relay ON.
  • Message Display for Under Voltage, Over Voltage & Unbalance Faults.
  • No separate auxiliary supply required.