The paper introduces the method and monitoring result of reliability test research on auxiliary contact of3TB40 AC contactor. 介绍了3TB40交流接触器辅助触头可靠性试验的方法和试验监测结果。
The I-U characteristic of AC contactor are analyzed. By combining auxiliary circuit, AC contactor coil can be operated under DC. 分析了交流接触器I-U特性,并设计了附属电路,使交流接触器线圈可通直流电运行。