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  • What is the principle of automatic line selection for single-phase ground faults in neutral point ungrounded systems?

    * Question

    What is the principle of automatic line selection for single-phase ground faults in neutral point ungrounded systems?


    *
    Answer

    The use of the fundamental zero-sequence current magnitude and directional characteristics of the grounding fault in the neutral point ungrounded system can constitute the working principle of the automatic grounding line selection device software.