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 similar threshold would be expected for many materials in an application involving surface corona. Moreover, if the material possesses a low electric strength (as measured by Test Method D 149), or especially if in service there is another mechanism of failure in the short time range of this test, the shape of the left hand end of the curve would be affected and would not reach the same high levels of stress as are exhibited by polyethylene either on this test or in many service applications,
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