过载保护继电器的可靠性验证试验

Reliability compliance test of over-load protective relay

过载保护继电器广泛应用于电气控制系统中,其可靠性直接影响系统的运行,而可靠性验证试验是提高产品可靠性的一种重要途径。在采用保护成功率作为可靠性指标的基础上,选取了定时或定数截尾试验方案,制订了可靠性验证试验的抽样检查方案,确定了可靠性验证试验的试验内容、失效判据和试验程序,同时对典型产品进行了可靠性验证试验。

Over - load protective relay is widely applied in electric control system. Its reliability directly affects running of system. Reliability compliance test is an important approach for improving reliability of products. On the basis of adopting protective success ratio as reliability characteristic value, limited timing or limited number truncated test is chosen. Sampling and checking plan is designed. The test contents, the failure criterion and test program of reliability compliance test are determined. In addition, the reliability compliance test for typical products is carried out.