船用低压断路器可靠性试验方法研究

Research on Reliability Test Method of Low Voltage Circuit Breakers in Ships

提出了船用低压断路器的可靠性指标体系,研究了断路器的可靠性试验方法。通过对典型的船用低压断路器开展可靠性试验,表明断路器的失效分布类型是正态分布或形状参数较大的威布尔分布。证明了所提出试验方法的可行性,最后论证了按指数分布制定的船用低压断路器可靠性鉴定试验方案是合理且略偏严格的。

This paper put forward the reliability index system of low voltage circuit breakers in ships,and studied the reliability test method. Reliability tests of typical circuit breakers were carried out according to the test method. The results show that the failure distribution type of the circuit breakers is a normal distribution or a Weibull distribution with large shape parameters,and prove that the test method proposed in this paper is feasible.At last,it is testified that the reliability evaluation test scheme of the circuit breakers based on exponential distribution is reasonable and slightly strict.