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对信号设备电源接地、互混的危害进行了阐述,分析了发生电源接地、互混的主要原因,介绍了信号电源接地的判断方法,并举例说明运用断线法如何查找电源接地故障。
The main reasons for the occurrence of power grounding and intermixing are analyzed. The method of judging the grounding of signal power supply is introduced. An example of how to find the power ground fault by using the broken line method is given.