電磁式剩余電流動作斷路器失效分析
胡建平1，李培強2
(1 湖南高速鐵路職業技術學院，湖南 衡陽 420110；
2 湖南大學 電氣與信息工程學院，湖南 長沙 410082)
摘 要： 基于國家標準中對剩余電流動作斷路器(RCCB) 的可靠性規定，對RCCB 進行氣候試驗、壽命試驗、防塵試驗。通過試驗驗證對試驗中的失效RCCB 進行失效機理分析，研究RCCB 在使用中的各種失效原因，并提出解決方案。結果表明：通過操作機構的尺寸計算書，驗證了公差配合的重要性及合理性；通過對電磁脫扣器(EMR) 的脫扣特性分析，驗證了RCCB 存在第一次動作電流偏大現象。
關鍵詞： 剩余電流；動作特性；可靠性試驗；失效機理
中圖分類號：TM561 文獻標識碼：B 文章編號：1007-3175(2015)07-0050-04
Failure Analysis of Electromagnetic Residual Current Operated Circuit Breaker
HU Jian-ping1, LI Pei-qiang2
（1 Hunan Technical College of Railway High-Speed, Hengyang 42011 0, China;
2 School of Electrical and Information Engineering, Hunan University, Changsha 410082, China）
Abstract: With reference to the relevant provisions of residual current operated circuit breakers (RCCB) in the national standard, climate test, life test and dustproof on RCCB were carried out. Analysis was made to the failure mechanism in the RCCB trial. Various RCCB failure reasons in use were researched and the corresponding solution was put forward. The result shows that the size calculation sheet of the operating mechanism verifies the importance of tolerance fitting and rationality and the tripping characteristics analysis of electromagnetic release (EMR) verifies that the first action current is larger in RCCB.
Key words: residual current; operating characteristics; reliability test; failure mechanism
參考文獻
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[2] 劉金鹿，蘇秀蘋，任俊勇，等.塑殼式斷路器中電磁脫扣器的分析與優化[J].低壓電器，2010(21)：1-4.
