Failure Analysis of Alternating Current Contactor

Alternating current contactor is one of the important elements widely used in the automatic control system. So its reliability level is very important. This paper mainly concerns failure analysis of the failure contactors after the reliability trial of AC contactor. Firstly, the test device and the test parameters are introduced in brief. Secondly, test plan is given. According to the test plan, sixteen samples are chosen to test. Lastly, the failure reason is analyzed for each failure sample in detail from different way. Subsequently the real failure reason has been found for each failure sample. Based on the failure reason, the improve method is put forward to increase the reliability level of products.