ASTM D3426用脉冲波法测定固体电绝缘材料电介质击穿电压及抗电强度标准试验方法
日期:2012-02-10 17:33
roximately 1.2 s and decaying to 50 % of peak voltage in approximately 50 s after the beginning of the wave. This wave is intended to simulate a lightning stroke that may strike a system without causing failure on the system.
For most materials, the impulse dielectric strength will be higher than either its power frequency alternating voltage or its direct voltage dielectric strengths. Because of the short time involved, dielectric heating and other thermal effects are largely eliminated during
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