断路器本体非全相保护装置故障分析及防范措施

The Fault Analysis of Circuit Breaker Open-Phase Protection Device and Related Countermeasures

针对一起断路器非全相保护装置负极金属性直流接地异常的故障排查过程中发现的问题,对断路器本体非全相保护装置结构和制造质量问题进行分析,并提出相应防范对策,最终实现其三相不一致保护装置继电器的正确可靠工作,为今后维护工作奠定了良好的基础。

Aiming at the problems discovered during the troubleshooting process of a metal DC ground abnormal at the negative pole of circuit breaker open-phase protection device, this paper analyzes the structure of the device and its manufacture quality, and proposes related countermeasures as to ensure the relay of it＇s three-phase discordance protection device being in reliable work status, and thus providing a good foundation for future maintenance.