中性点不接地系统和中性点经消弧线圈接地系统统称为中性点不直接接地系统，广泛应用于铁路配电系统中。
Non-ground neutral system and arc-suppression-coil-ground neutral system are called non-direct ground neutral system that is widely used in power distribution system.
由于铁路配电负荷的重要性，快速查找出故障线路对系统的安全运行具有重要意义。
For the importance of the railway distribution load, it is essential to seek the fault line rapidly.
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