Surge Arrester Explosion Protection Performance Discussion

From the configurable design,theory and long-duration current impulse,thermal stability and long-term stability,two types Surge arrester are designed: one is surge arrester with gas space,and other one is surge arrester without gas space.The reason to make surge arrester explosion is analyzed from the aspect of the sealing performance of surge arrester: the humidity intrude the surge arrester inside and cause the internal flashover,the resistors accelerated ageing behavior which cause the increase in power loss occurs when the temperature increase,lead to the explosion or thermal runaway of the surge arrester.From analyzing,we know that in order to ensure the explosion protection performance of the surge arrester,it should have the good sealing performance,high long-duration current withstand capability,good stability,without gas space,the best configurable design is silicon inject on the metal oxide resistors directly.