通过对影响机车试运合格率的电气故障的分析,提出了相应的改进措施和试验手段,有效地抑制了因部件质量问题、布线及接插不良引起的机车高速运行时电流、电压不平衡、不稳定(抖动)故障的发生。有效解决了库内试验无法发现的正线试运故障的疑难问题。 Based on the analysis of the electrical faults that affect the passing rate of locomotives, corresponding improvements and test methods are put forward, which effectively restrain the current and voltage unbalance caused by the high quality running of locomotives due to the problems of component quality, wiring and poor connection, Unstable (jittery) failure occurred. It effectively solves the difficult problem of the main line trial failure that can not be found in the in-store test.