Another optional control function is the calculation of the residual section resistance based on the measured vol "-tage contact line voltage and the test current."
另一个可选控制功能是对基于测得电压接触线电压及测试电流的剩余区间电阻进行计算。
The other is to inject current. It selects the faulty line and realizes zero residual current based on concept of APF.
第二种方法即有源注入的方案，该方法选出接地故障的线路，借鉴有源电力滤波的理念来实现零残流。
Putting the three-phase lines and middle line of the electrical circuit through the zero current transformer, the residual current signal will be converted into the voltage signal.
将电气线路的三相线及中线通过零式电流互感器后，零式电流互感器会把剩余电流信号转换为电压信号。
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