中文说明：小电流接接系统故障选线。是用于仿真小电流接地系统发生单相接地时，正确选出故障相
English Description：
Small current connection system fault line selection. It is used to simulate the single-phase grounding of small current grounding system and select the fault phase correctly
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中文说明：小电流接接系统故障选线。是用于仿真小电流接地系统发生单相接地时，正确选出故障相
English Description：
Small current connection system fault line selection. It is used to simulate the single-phase grounding of small current grounding system and select the fault phase correctly