ground relay

What is 'ground relay'? What does 'ground relay' mean?

A relay used to detect contact accidents between an electric path and ground caused by arc ground faults or complete ground faults resulting from the deterioration or destruction of the insulation in power cables or electric devices. When a ground fault occurs on the end receiving power, only the receiving end is cut off to prevent affecting the host power distributing substation in advance. Protection coordination with the host (i.e., the substation of the power company) is necessary to provide protection.

Measuring / Motor Protective Relays