The effectivegrounding 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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The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effectivegrounding systems.
Selecting the correct grounding system, carries on the inspection maintenance regularly to the electrical equipment, may effective prevent has the security accident.