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29.1 部分节选:if the construction is such that the distances could be affected by wear, by
6 K( S/ e! ` r& ^" g8 S4 v* w! Fdistortion, by movement of the parts or during assembly, the clearances for rated impulse
. l+ R, }- C0 O1 _3 o+ r# vvoltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not
. x0 E/ M2 g6 b8 M$ b! e( S, A7 xapplicable.+ _: a! u; a* {$ {; C6 [+ |
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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。3 C! [% x: D+ M" j$ |! L4 N* L
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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' j$ `$ |0 n- ?9 A8 e+ 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?+ W, G; A* V2 p' j2 i& @# f% i
注 PCB线路板整体灌胶.9 z: ]6 E1 i0 E4 }0 P
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