塑壳断路器的保护配合

Protection and Coordination of Molded Case Circuit Breaker

在低压配电系统中,塑壳断路器是重要的保护用电气设备。介绍了塑壳断路器与导线、电动机及其他保护用电气设备之间的保护及配合关系,通过对这种配合关系的认识来获得最佳的保护匹配关系,充分发挥电气线路上电气设备和保护用电气设备的功用,达到安全、经济、合理选用断路器的目的。

In low-voltage power distribution system,molded case circuit breakers（MCCB） are important electric equipment.Introduction was made to protection and coordination relationship between MCCB and wires,electromotor equipment and other electric equipment for protection use.Via knowledge of such coordination relationship,the best protection matching relationship was obtained.This paper gave full play to the function of electric equipment and protection equipment in electric lines,reaching purpose of safety,economy and reasonable selection of circuit breakers.