| 电缆屏蔽层穿过零序电流互感器吗 |
| 添加时间：2019/6/3 16:28:59 浏览次数： |
| 必须穿过。 Must pass through. 高压电缆的铠甲上可能会产生杂散电流，使零序电流互感器感应出电压，引起保护误动；所以接地保护的裸铜线要穿过零序电流互感器。这样，合成磁场为零。 Stray current may be generated on the armor of high voltage cable, which causes zero sequence current transformer to induce voltage and cause protection malfunction. Therefore, bare copper wire www.hanbaiyushidiao.cnwww.shaiban.net.cnwww.shidiaodaxiang.cnwww.xiaoxieqi.com.cnwww.banjia cz.cnwww.datongbanjia.cnfor grounding protection should pass through zero sequence current transformer. In this way, the synthetic magnetic field is zero. 1、如果单纯用于电缆接地，电缆的接地线是可以不经过电流互感器，而直接接地的。 2、如果该路出线（进线）设有零序保护，则要求取零序电流信号，该信号源就是这个电流互感器，为了准确测量这个零序电流1. If only used for cable grounding, the grounding wire of cable can be grounded directly without current transformer. 2. If there is zero sequence protection on the outgoing (incoming) line of the circuit, the zero sequence current signal is required. The signal source is the current transformer, in order to measure the zero sequence current accurately. |
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