Application of Mechanical and Electronic Reliability in Vacuum Circuit Breaker

In this paper, the reliability of ZN 63(VS1) vacuum circuit breaker, which is widely used in medial voltage power network, is studied, and the general analysts method of mechanical reliability is put forward. At the same time, the reliability of electronic components with Markov Process is also analyzed. The method of convincing testing time for screening test is also put forward in this paper, which is valuable to engineering practice.