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.

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