电器与能效管理技术Issue(3)：64-69,6.DOI:10.16628/j.cnki.2095-8188.2025.03.009
JP柜剩余电流动作断路器短路分断技术研究
Study on Short-Circuit Breaking Technology for Residual Current Operated Circuit Breaker in JP Cabinet
王华章 1独田娃 1高进才 1李炳权 1张春骋1
作者信息
- 1. 宁波奥克斯智能科技股份有限公司,浙江宁波 315031
- 折叠
摘要
Abstract
Low short-circuit breaking capacity plays essential role for the residual current operated circuit breaker(RCB)sample testing in JP cabinet,which is required that the first pass yield(FPY)should be 100％.It is necessary to ensure the reliability of the low breaking capacity.By comparing with a few types of static contacts,U-shape static coutact of bottom incoming line is defined to be suitable for low breaking capacity,which can increase the electromagnetic repulsion force and shorten the breaking time.Gas blowing can accelerate the transfer of the arc,increase the arc voltage,and prevent the back breakdown.The contact pressure is adjusted to avoid critical breaking.The critical point of the small frame is limited outside the sampling inspection range,and the large frame is completely broken by the instantaneous tripping operating mechanism.The shorter the instantaneous tripping time is,the faster the breaking speed is.Through the comparative test of short-circuit breaking,the U-shaped static contact,gas blowing,contact pressure and instantaneous tripping time can improve the stability of low breaking capacity.关键词
剩余电流动作断路器/短路分断/电弧电压/背后击穿Key words
residual current operated circuit breaker/short-circuit breaking/arc voltage/back breakdown分类
动力与电气工程引用本文复制引用
王华章,独田娃,高进才,李炳权,张春骋..JP柜剩余电流动作断路器短路分断技术研究[J].电器与能效管理技术,2025,(3):64-69,6.
