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29.1 部分节选:if the construction is such that the distances could be affected by wear, by) Z9 q/ D3 f+ p- }; r, @
distortion, by movement of the parts or during assembly, the clearances for rated impulse
0 J7 X# q0 G: j+ `. M$ fvoltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not
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标准中说假如距离受磨损、变形、装配等影响时,1500V脉冲电压或以上所对应的电气间隙需要增加0.5mm。
# R& ~/ |7 U& x' T4 U9 _/ y% J在实际操作中,大家如何定义"距离受磨损、变形、装配等影响".
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/ i# Q1 y5 k$ P) [; d目前由于是宁可杀错不放过的态势,脉冲电压1500V以上都增加了0.5mm,我想听听大家是怎么操作的?
8 ?# l) a- T* b注 PCB线路板整体灌胶.
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