论文部分内容阅读
1 故障现象1999年5月,我矿一掘进车间由于生产的安排,需从矿南带下放一架线式电机车型号为 ZK3-6/250-2)至矿北带。在下放前,按惯例做试运行,机车能正常起动、运行。待放至北带160m 中段准备试车时,该电机车低速档无法起动,而且没有电磁声;高速档一接通,自动开关立即跳闸。反复试验多次,故障依旧。于是在通电的情况下检测,发现低速档时电源
1 Symptom In May 1999, due to the arrangement of production, a digging workshop of mine was to be demolished from the south of the mine to a mine electric locomotive model ZK3-6 / 250-2 to the north of the mine. Before decentralization, according to the usual practice test run, the locomotive can start and run normally. To be put to the north with 160m middle section ready to test, the electric locomotive low gear can not be started, and there is no electromagnetic noise; high gear a connected, automatic switch immediately trip. Repeatedly test many times, the fault still. So in the case of power detection, found low-speed power supply