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电磁接触器在机车上应用广泛,诸如LC、QC、YC、YRC,还有LLC、FLC等皆属直流电磁接触器,由于此类接触器通断电流大,可实现远距离控制,而大量应用于机车控制电路中,针对近几年的维修使用情况,就其常见故障作一浅析。1 故障情况 电磁接触器的故障有触头烧损;线圈烧损;电磁接触器通电后不能吸合,有时出现滞后吸合、犯卡;电磁接触器断电时滞后断开或不能断开等。2 原因分析 (1)电磁接触器触头通过电流较大,动作频繁,
Electromagnetic contactor widely used in the locomotive, such as LC, QC, YC, YRC, as well as LLC, FLC, etc. are DC electromagnetic contactor, due to the contactor off current, can achieve long-distance control, and a large number of applications In locomotive control circuit, for the maintenance of the use of the situation in recent years, to make a brief analysis of its common failures. 1 fault conditions electromagnetic contactor fault contact burning; coil burning; electromagnetic contactor can not be energized after the pull, and sometimes pull the hook, the crime card; electromagnetic contactor off or can not disconnect after power lag . 2 reasons (1) electromagnetic contactor through the current larger, frequent movements,