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Numerical AC DC Supervision Relay – GKDCSR

Continuous Supervision of Auxiliary Power Supply

GKDCSR is a dedicated AC-DC supervision relay specialized for continuous monitoring of the AC and DC auxiliary power supplies. In case of any power source failure, it must be alarming and also initiate tripping within the crucial time, even if all other protection relays fail due to power supply failure, to ensure safety for everyone. 

GK Power, an RDSO-approved leading manufacturer in India, offers a numerical AC DC supervision relay at the industry’s latest technology. Enhanced safety by reducing hazards with safety-conscious testing of IEC 60255-1, IEC 60255-26, and IEC 60255-27, this relay unleashes its own full potential of working in hard environments with ingress protection of IP54.


Continuous Monitoring of the Auxiliary Power Supply of 25 kV and 2X25 kV Systems for Indian Railways with Respect to the Below Specification


Protection Function

  • AC under voltage alarm
  • DC Under Voltage Alarm and Trip
  • AC overvoltage alarm
  • DC overvoltage alarm

Product benefits

  • Our relays are available with selectable communication protocols such as IEC 61850 and IEC 60870-5-103 for SCADA communication through RS485 and RJ45 ports available on the rear side.
  • 50 cycles of actual waveform are stored in the built-in memory with date-time stamping for fault analysis.
  • Self-diagnostic feature for continuous monitoring of the internal hardware and alarm generation in case of failure of any critical components.
  • Ready to install at 25 kV Traction Transformer, 2×25 kV Scott connected and V connected Transformer & Feeder Panels at TSS

Product features

  • Withdraw-able type Flushmounted
  • 20 x 4 LCD Alpha Numeric Display with Backlight Control and 10 Status Indication LEDs.
  • 5 Keys for Settings and Navigation, Individual Keys for Read/Record, LED Reset, and Hardware Reset