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29.1 部分节选:if the construction is such that the distances could be affected by wear, by
* S. i* l/ }) ]% e1 ?1 D0 t$ sdistortion, by movement of the parts or during assembly, the clearances for rated impulse
! L6 E: V6 b5 E4 I7 Hvoltages 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。
; x( t7 y6 g6 Y- @+ Y在实际操作中,大家如何定义"距离受磨损、变形、装配等影响"./ h+ e4 L" `7 X
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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?( j1 P4 N+ _6 e7 \
注 PCB线路板整体灌胶.
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