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29.1 部分节选:if the construction is such that the distances could be affected by wear, by
7 B* o4 T3 s) g3 g" f) ydistortion, by movement of the parts or during assembly, the clearances for rated impulse
) `; z# I' _* E8 K* cvoltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not2 b$ {6 q/ v/ ~3 w
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, a; z& X& Y7 i; t5 V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。
7 `$ [: P* S4 D7 w在实际操作中,大家如何定义"距离受磨损、变形、装配等影响". I7 J6 w, k! W7 ?# h3 G& l
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+ P/ a- r! |6 c+ ?1 _0 ` S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?
0 g% F: n* l5 ?, l. p* p% |# Q( _注 PCB线路板整体灌胶./ n4 T- P0 v% u6 M0 U
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