一、故障现象我段东风_4型3018号内燃机车乘务员有一次在折返段一司机室做电器动作试验,当合下1K,再合下4K时,发现一、二司机室操纵台信号灯同时全部亮。并且1K、4K处有电击声和冒烟。间隔2秒左右,总控自动脱扣开关(15DZ)跳开,信号灯熄灭。恢复一室琴键开关,用二室做电器动作试验时,故障现象与一室试 First, the fault phenomenon I paragraph Dongfeng _4 Type 3018 diesel locomotive attendants once in the turning section of a driver’s room to do electrical actions test, when combined under 1K, and then close the 4K, found that one or two cab console lights at the same time all bright. And 1K, 4K at the electric shock and smoke. About 2 seconds intervals, the total control automatically trip switch (15DZ) jump open, the lights go out. Restore a room key switch, with two rooms to do electrical action test, the phenomenon of failure and a room test