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为什么零线对地电压为0
更新时间: 2020-09-19 00:00:00  

因为零线是接地的,与大地电位相等,所以没有电位差,与大地之间电压是0伏。

零线是变压器二次侧中性点引出的线路。与相线构成回路对用电设备进行供电,通常情况下,零线在变压器二次侧中性点处与地线重复接地,起到双重保护作用。

关键词: 为什么 电压

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