浅析自动空气开关与低压熔断器保护特性失配

Analyses on the Mismatch of Protective Characteristics between Automatic Air-switch and Low-voltage Fuse Box

通过对实际配电系统的短路电流计算,将以前安装运行的电源进线空开的保护特性与电机短路保护熔断器动作特性作了对比分析,找到了老蒸发三组配电室故障失电的原因。

Through the calculation of the short- circuit current of actual p ower distribution system, this paper makes comparative analyses on the protectiv e characteristics of the air- switch on the inlet wire of current source erecte d and operated previously and the performance characteristics of the fuse box fo r the short- circuit protection, finds out the reasons of batetopic fault in di stribution room, and selects the electronic air- switch as the new product for replacement.