描述
为三相四线有功电表经电流互感器接入，火线U、V、W分别接电流互感器一次侧首端L1，一次侧末端L2端接负载，电度表1、4、7端分别接电流互感器二次侧首端K1，3、6、9端分别接二次侧末端K2，电表2、5、8端分别接电流互感器一次侧L1端，其连片应拆下。为保证安全，电流互感器二次侧末端K2应分别接地。右图为接线图的模拟演示，大家注意电流互感器与电表的接线。
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