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How to install the thermal protector and contactor?
Release time:2018-11-20 21:27 views:
接触器不能用作缺相保护器,因为接触器不能检测到缺相故障,缺相可采用具有缺相保护功能的热继电器作为检测元件,使接触器跳闸,具体接线与正常的热继电器保护回路没有区别,是一样的。(采用电动机综合保护器也可以)
通常是把热保护器装在接触器的前面,虽然过载保护的作用是一样的,但一般不这样接线。热保护器动作后进线端子仍然带电,复位时要注意。
接触器控制回路的电源线就不能从135端子上引,布线麻烦些。
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