关键词: 磁耦隔离器, 加速寿命试验, 耐压寿命, 可靠性

Abstract: In order to solve the actual needs of the withstand voltage life evaluation of magnetic isolators, an accelerated life test and life evaluation method suitable for magnetic isolators is studied. The key factors affecting the withstand voltage life of the magnetic coupling isolator are studied, and the feasibility of the accelerated life test and the selection of the accelerated model are analyzed. The stress type, stress level, censoring time in the accelerated life test scheme are reasonably designed and the test is carried out according to the designed test circuit scheme. The relationship between voltage and life is deduced by using the collected test data and combined with the acceleration model, so as to realize the evaluation and reliability evaluation of the withstand voltage life of the magnetic coupling isolator.

Key words: magnetic isolator, accelerated life test, withstand voltage life, reliability