我段运用的东风4Ｂ型机车近一段时间连续发生起动发电机绝缘值低或绕组开路等故障。所幸这类故障都在段内检修中发现并及时得到处理 ,避免了故障扩大。但是 ,此类故障如发生在运行途中并造成起动发电机不能继续工作时该如何处理呢 ?我们知道 ,机车在运行途中起动发电机如果发生 I use the Dongfeng 4B locomotive for a period of time near the start generator insulation value is low or winding open and other failures. Fortunately, these failures are found in the paragraph overhaul and timely treatment, to avoid the expansion of the fault. However, what if such failures occur during operation and cause the starter generator to not continue its operation? We know that when the generator starts on its way to operation,