华电技术 ›› 2016, Vol. 38 ›› Issue (8): 45-47.

• 技术交流 • 上一篇    下一篇

400V PT一次保险熔断原因分析及处理

  

  1. 华电国际邹县电厂,山东邹城〓273522
  • 出版日期:2016-08-25

400V PT primary fuse fusing cause and treatment

  1. Huadian International Zouxian Power Plant, Zoucheng 273500, China
  • Published:2016-08-25

摘要:

摘要:对400V电压互感器(PT)一次保险熔断的现象进行分析,确定单相高阻接地时,非故障相电压升高,PT饱和,励磁电流增加是保险熔断的原因。采用中性点加装流敏电阻的方案,解决了单相接地时PT一次保险熔断的问题。

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Abstract:

Abstract:The incident of 400VPT primary fuse fusing was analyzed, and confirmed that the main cause is that the exciting current increase. To provide currentsensitive resistant on neutral point solved the problem of PT primary fuse fusing when single phase grounded.

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