The system make it easy for the substation operator and maintenance personnel to control grounding status of field, and to prevent the occurrence of security incidents of living mal-operation.
该系统可便于变电站运行人员、检修人员在进行操作和检修作业时对现场接地状态的掌控，防止发生带电误操作的安全事故。
It USES the positive impedance in static stability and low-voltage impedance which can effectively prevent the mal-operation in external faults.
静稳阻抗和低电势阻抗采用正序阻抗，能有效地防止外部短路造成的误动作。
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