三相异步电动机直接启动的继电接触器控制线路研究

Research on Relay Contactor Control Circuit for Direct Start of Triple-phase Asynchronous Motor

本文介绍了三相异步电动机直接启动的继电接触器控制线路。首先分析了电动机的正反转控制线路,接着为了保证两个交流接触器不会出现同时工作的情况介绍了了互锁保护中的电气互锁,并为了解决电气互锁无法实现电动机的直接换向从而引出了机械互锁,最终得到了三相异步电动机正反转的继电接触器控制线路。

This paper introduces the relay contactor control circuit for direct starting of triple-phase asynchronous motor.The positive&negative control circuit of the motor is firstly analyzed,then the two ac contactor in order to ensure that there will be no work at the same time introduces the electric interlock of the procession of interlock protection,and to solve electric interlock is unable to realize the direct the reversing of the motor and thus raises the mechanical interlock,finally obtained the triple-phase asynchronous motor and reversing relay contactor control circuit.