华电技术 ›› 2008, Vol. 30 ›› Issue (3): 55-58.

• 一线动态 • 上一篇    下一篇

ZN12-35/1250断路器“拒分”故障的改进

唐湘洲1,李校立2   

  1. 1.贵州华电清镇发电有限公司,贵州 清镇 551418;2.贵州华电大方发电有限公司,贵州 大方 551600
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-03-25

Improvement on “fail-to-break” problem of type ZN12-35/1250 circuit breaker

TANG Xiang-zhou1 ,LI Xiao-li2   

  1. 1.Huadian Qingzhen Power Corporation Limited, Qingzhen 551418, China; 2.Huadian Dafang Power Corporation Limited, Dafang 551600, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2008-03-25

摘要: 对ZN12-35/1250断路器安装投运后出现的拒分故障进行查找、分析,找出了设计制造上存在的不合理处并提出了改进方案,改用50×5的槽钢焊接在断路器背板上,作为分闸弹簧固定板,将断路器分闸弹簧固定端向断路器面板外移动,使分闸弹簧与传动拐臂的角度小于180°。改进后至今,经过9年多的运行,未发生过一次“拒分”故障。

关键词: 真空断路器, 拒分, 改进, 方法

Abstract: Through searching and analyzing the fail-to-break problem of type ZN12-35/1250 circuit breaker in operation after commissioning, some defects in unreasonable design and manufacture were fond out, the improved scheme was proposed. After welding a 50×5 channel steel on the breaker backplane as the fixing plate of breaking spring, moving the fixed end of breaking spring outward, making the angle between breaking spring and transmission crank less then 180°, until now the breaker has worked well for 9 years.

Key words: vacuum circuit breaker, fail-to-break, improve, method