摘要
通过电路分析和计算,阐述SS7E型机车在主接地检测电路等方面存在的不足,包括低压接地试验时有检测盲区和主电路绝缘性能差造成的无故障显示跳主断。针对故障原因,提出改进措施,收到良好效果。
Through circuit analysis and calculation, the author explains the problems existing in the main grounding detection circuit of SS7E locomotive, including the blind detection area under low voltage grounding test, and the switch-off of line circuit-breaker with no fault display due to poor insulation performance of main circuit. Improvement measures are given according to the fault causes and the results are nice.
出处
《铁道技术监督》
2010年第4期7-8,共2页
Railway Quality Control
关键词
电力机车
接地
检测电路
故障分析
技术改造
Electric Locomotive
Grounding
Detection Circuit
Fault Analysis
Technical Reconstruction
