| 10 kV power grid grounding is one of the key problems. it is to prevent the important applications of technologies and systems, the supply reliability, personal safety, security and insulating devices and over voltage, relay and communication with and grounding device and etc. Through the analysis of several grounding, especially Beijing 10 kV power neutral low resistance grounding, illustrate the benefits,drawbacks and the system of protection in NRS. To further develop work provided the basis and thoughts.
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