The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effective grounding systems.
小电流接地系统发生单相接地故障时，故障线路与健全线路在特征频段内零序电流的相位差别是接地选线判据的重要依据之一。
The effective grounding methods are put forward, which are valuable to the development and use of electronic devices.
对电子设备的研制、改造、使用均有一定的参考价值。
The effective grounding methods are put forward, which are valuable to the development and use of electronic devices.
对电子设备的研制、改造、使用均有一定的参考价值。
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