8G机车主断路器低压操纵机构改造

The Transformation of Low-voltage Operating Mechanism in Main Circuit Breaker of 8G 8G Locomotive

主断路器是电力机车的总保护、总开关,从2008—2010年主断路器运行情况调查结果分析得出:94的主断路器故障出现在低压操纵机构,而低压操纵机构故障的98发生在启动机构和电气连锁两部分。通过分析最近3年主断路器发生故障的原因,对其进行了技术改造。

The main circuit breaker is the main protection and master switch of electrical locomotive.The analysis on the survey results of the running conditions of the main circuit breaker in 2008-2010 shows that 94% faults of the main circuit breaker occurred in the low-voltage operating mechanism,and 98% faults of low-voltage operating mechanism occurred in startup mechanism and electrical chain.And through analyzing the reasons of the faults of the main circuit breaker in the last 3 years,the technical transformation has made for it.