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51问答网 > 同相两根电源线分别上下穿入同一穿心电流互感器对计量有何影响

同相两根电源线分别上下穿入同一穿心电流互感器对计量有何影响

2025-03-16 14:03:58

推荐回答（1个）

回答1：

以下几种情况是不一样的。
①这两根电源线的负载是完全相同的。两个电流对互感器的作用相互抵消，互感器二次无输出，计量为零
②这两根电源线的负载大小不同但相位相同。两个电流对互感器的作用部分抵消，互感器二次输出与两个电流之差成正比，计量减小。
③这两根电源线的负载大小和相位都不同。两个电流对互感器的作用部分抵消，互感器二次输出与两个电流相位差成正比，计量可能减小也可能增大。

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