LW15A-550Y型断路器试验异常分析
Ningxia Electric Power(2012)
Abstract
对在停电例行试验过程中发现的一起断路器异常情况,通过解体检查和进行原因分析,找出断路器故障的原因,得出结论并提出防范措施.结果表明:断路器故障原因是装配尺寸公差及连杆受力的设计裕度偏小,连杆销处受力不均匀,轴销断口承受了大于连杆材料有效截面上所能承受的过载应力,从而导致连杆在轴销处韧性断裂.
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