Effects of injected number and amplitude of $8/20{\mu}s$ impulse current on the life of ZnO varistor

$8/20{\mu}s$ 임펄스전류의 크기와 인가횟수가 ZnO 바리스터의 수명에 미치는 영향

This paper presents leakage current characteristics as a function of injected number and magnitude of impulse current, when$8/20{\mu}s$ lightning impulse current is injected to ZnO varistor. The life of ZnO varistor against $8/20{\mu}s$ lightning impulse current was evaluated. The injected number of the test current to breakdown was inversely proportional to the amplitude of impulse current.