HXD3C机车主断路器异常断开故障分析与处理方法

在HXD3C机车运用阶段,连续多次出现机车主断路器无故断开问题,严重影响机车正常运行。为解决该问题,根据HXD3C机车主断路器工作原理及HXD3C机车微机控制中主断路器断开的逻辑关系,详细阐述了引起主断路器异常断开的条件,并结合HXD3C机车C5修检修期间及机务段运用过程中实际发生的故障案例,提出主断路器故障诊断方法和解决方案,完善主断路器故障诊断处理流程,并通过实际案例实施,取得了良好效果。

Fault Analysis and Solution of Main Circuit Breaker Abnormal Disconnection of HXD3C Locomotive

During the operation of HXD3C locomotive, there have been many consecutive problems of unexplained locomotive main circuit breaker opening, which seriously affects the normal operation of the locomotive. In order to solve this problem, according to the working principle of the main circuit breaker of the HXD3C locomotive and the logic relationship of the main circuit breaker opening in the microcomputer control of the HXD3C locomotive, the conditions that caused the abnormal disconnection of the main circuit breaker were elaborated in detail. Combined with the cases of faults actually occurred during the C5 maintenance and operation in depot of HXD3C locomotive, the main circuit breaker fault diagnosis methods and solutions were proposed and the fault diagnosis handling process was improved. The actual cases were implemented and good results had been achieved.