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何谓重复接地?重复接地有何安全作用?

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正确答案:

重复接地:就是零线上有多处接地装置与大地连接,这是保护接零系统中不可缺少的安全措施。

它有以下安全作用:

①降低漏电设备对地电压。

②减轻零线断线时的触电危险。

③改善架空线路防雷性能。

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