Wire Monitoring

The Patton & Cooke Ground Check Monitor Relay is a special relay for checking ground wire continuity in trailing cables. The relay can detect an open circuit in the ground wire or pilot wire or a short circuit between the pilot wire and ground and will trip

The N.O.- N.C. contacts may be wired to a shunt trip, undervoltage trip, or conductor coil.

The Ground Check Monitor Relay must always be used with a Patton & Cooke terminating device.
Each ground wire monitoring relay must have a diode assembly as a terminating module.

Monitor Relay

Wire Monitoring

Patton & Cooke Catlogue No. Control Voltage
2A31-1C-A-60Hz 120 V 60 Hz
2A31-1C-A-50Hz 120 V 50 Hz


Next Event

2018 IEEE PES T&D - Denver, CO
April 16-19, 2018

About Patton & Cooke Co.

Patton & Cooke was founded in 1961 by an electrical engineer and an electrical designer. Their guiding principle was simple: ...read more


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  Unit 100 – 7795 128th Street
Surrey, B.C. Canada V3W 4E6