电子式塑壳断路器后备保护电磁铁设计

Design of Backup Protection Electromagnet for Electronic Moulded Case Circuit Breaker

介绍了塑壳断路器中的后备保护电磁铁对断路器尤其是电子式产品后备保护的作用。阐述了后备保护电磁铁的原理,分析了保护所需要的4个动作阶段,从而实现设计可靠性。最后,探讨了后备保护电磁铁设计案例的实际应用。

The backup protection electromagnet in moulded case circuit breaker(MCCB)serves as the backup protection for the circuit breaker,especially in electronic product.In this paper,the principle of backup protection electromagnet and the four action stages required by backup protection and how to realize its reliability are described,and the practical application of various common backup protection electromagnets are discussed.