電磁式剩余電流動作斷路器失效分析 

胡建平1，李培強(qiáng)2 
(1 湖南高速鐵路職業(yè)技術(shù)學(xué)院，湖南 衡陽 420110；
2 湖南大學(xué) 電氣與信息工程學(xué)院，湖南 長沙 410082) 
 

摘 要： 基于國家標(biāo)準(zhǔn)中對剩余電流動作斷路器(RCCB) 的可靠性規(guī)定，對RCCB 進(jìn)行氣候試驗(yàn)、壽命試驗(yàn)、防塵試驗(yàn)。通過試驗(yàn)驗(yàn)證對試驗(yàn)中的失效RCCB 進(jìn)行失效機(jī)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(jié)果表明：通過操作機(jī)構(gòu)的尺寸計(jì)算書，驗(yàn)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(yàn)證了RCCB 存在第一次動作電流偏大現(xiàn)象。
關(guān)鍵詞： 剩余電流；動作特性；可靠性試驗(yàn)；失效機(jī)理
中圖分類號：TM561 文獻(xiàn)標(biāo)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(xiàn)
[1] 劉德勝，郎文慶，葉文利，等.淺談提高漏電斷路器性能的試驗(yàn)及措施[J].低壓電器，2009(19)：60-63.
[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(yōu)化[J].低壓電器，2010(21)：1-4.