一起真空开关炸毁的原因分析

Cause Analysis on Explosion of Vacuum Breaker

介绍了一起ZN28系列真空开关爆炸事故,并从继电保护动作情况和事故现场两方面对事故原因进 行了分析。根据分析的结果得出了事故教训,提出了改进建议。在对后期购进的相同型号的开关进行检查时, 发现厂家已进行了与本文观点相同的改进,从而证明了分析的正确性。

This paper introduces the explosion of type ZN28 vacuum breaker and analyzes the cause of the accident from two aspects,the action of protective relay and accident site. An improvement suggestion is put forward based on the analysis result and lessons learnt. When checking the same type of breaker purchased thereafter,it is found that the manufacturer has made improvement just in the way proposed by this paper,so it proves that the analysis is correct.