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How does neutral grounding resistor in power generation side, see and link up with grounding fault at the secondary side of a transformer?

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If you are galvanically separating the power infeed side from the consumer side by using a transformer, any earth/ground fault on the transformer secondary will have no effect on the neutral earthing/grounding resistor on the primary. In other words, the two circuits (primary infeed and secondary consumer) are isolated in terms of earth/ground fault currents.

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