摘要
目前挂网运行的ZW 8-40.5型内置TA式真空开关的绝缘硅脂,在进水受潮或掺入部分有机杂质后,其绝缘性能会加速劣化,严重者会导致TA一次侧绝缘击穿接地事故。文中以4台ZW 8-40.5型真空开关故障为实例,分析了故障发生的主要原因,提出了相关预防措施。
If insulation silicone of ZW8-40.5 type vacuum switch,which is in running status,be affected with damp,or be doped with organic impurity,the insulating property would be deteriorated at a rapid pace,the insulating barrier would be breakdown and lead to the grounding fault.Based on analyzing the cause of failure running on four unit ZW8-40.5 type vacuum switch,preventive measures is presented in this paper.
出处
《湖北电力》
2010年第4期32-33,共2页
Hubei Electric Power
关键词
真空开关
故障分析
绝缘
vacuum switch
failure analysis
insulation
