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  1. avkester

    Large earth fault current mysterie

    Dear All, I am posing a question regarding the occurence of an earth fault trip (the G function on a 4 pole circuit breaker, set at 250 A). The system is 3-phase WHY TN-S and the load uses all 3 phases without the neutral. The earth protection trips on a Siemens 3WN6 and the reading shows the...

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