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Ground Fault Protection

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  1. Trevorvaligura is offline Junior Member Pro Subscriber
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    Ground Fault Protection

    What overcurrent relay could you install between phase and ground? This needs to be changed, the relay (CT) would be installed on the neutral conductor or around all phases (residual) but not between phase and ground.

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    Kalbi_Rob is offline Experienced Member Pro Subscriber
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    Quote Originally Posted by Trevorvaligura View Post
    What overcurrent relay could you install between phase and ground? This needs to be changed, the relay (CT) would be installed on the neutral conductor or around all phases (residual) but not between phase and ground.
    Might be trivial, but residual ground fault is the addition of a Neutral ct to the existing breaker ct's, while zero sequence ground fault is the addition of a CT that encompasses all phases including the neutral.

    https://testguy.net/content/279-Grou...Testing-Basics

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