In this paper,an accident case of two-phase off-ground short-circuit caused by single-phase grounding in a 10 kV low-current grounding system,which eventually developed into three-phase short-circuit,was identified and analyzed through fault records and on-site fault information,the cause of the fault was described,and preventive measures and suggestions were put forward.
10 kV system with non-effectively earthed neutralsingle-phase ground short circuitthree-phase shortcircuit
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