ASTM D2275固体电绝缘材料表面对局部放电(电晕)的耐电压性标准试验方法
日期:2012-02-10 10:39
a, or its cessation, thus retarding failure. The corona may cause a treeing within the insulation, which may progress to failure. It may release gases within the insulation that change its physical dimensions. It may change the physical properties of an insulating material; for instance, it may cause the material to embrittle or crack, and thus make it useless.
Tests are often made in open air, at 50 % relative humidity. It may be important for some materials to make tests in circulating air at
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