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In order to improve the work efficiency of the first and second overhaul of the substation, and to ensure the personal safety of the staff, this paper proposes a retractable test line box for secondary maintenance and a V-type porcelain column break insulation protection frame for isolation control of primary equipment. The wire box can effectively shorten the time of test wiring and make the on-site debugging work more convenient. The insulation frame guarantees personal safety. The retractable test line box and the isolating switch V-type porcelain column broken insulation protection frame can be used to improve the efficiency of the first and second on-site inspection and debugging, and effectively protect the personal safety of the staff.

Development of special tools for maintenance and testing of substation primary and secondary equipment