TQFR—3000型牵引发电机(简称3000电机)是东风_4型内燃机车主发电机,它发生故障危害大,修程大,经济损失也大。因此对其故障实行预测,防患于未然,对保证机车可靠运行有很重要的意义。从1981年开始,我段对3000电机电枢绕组断线故障进行了预测,先后查出五台电机出现断线,都进行了吊修处理,消灭了事故隐患,效果较好。 TQFR-3000-type traction generator (referred to as 3000 motor) is the main generator of Dongfeng type-4 diesel locomotive. It has a large failure and great repairs and large economic losses. Therefore, the prediction of its failure, take preventive measures, to ensure the reliable operation of the locomotive has a very important significance. From 1981 onwards, I paragraph on the 3000 motor armature winding fault prediction was made, has found five motor disconnection, have carried out hanging repair, eliminating the hidden dangers of accidents, the effect is better.