10kV VS1型断路器二次回路的隐患及改进方案

Leak and Improvement on the Secondary Circuit of VS1 Type Circuit Breaker

分析和讨论了一起越级跳闸事故的原因和防范措施,指出10kV VS1型断路器二次回路可能存在的隐患,对正在运行的该型断路器提出了两种改进方案,并对电气设计提出了合理化建议。

This paper analyzes and discusses reasons and counter measures of one override trip accident. Then it points out the possible leak existing in the secondary circuit of VS 1 type circuit breaker. Lastly, it puts forward two kinds of improvements and reasonable suggestions about its electrical design.