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29.1 部分节选:if the construction is such that the distances could be affected by wear, by
" v# q% G1 `8 [/ T( s+ ddistortion, by movement of the parts or during assembly, the clearances for rated impulse
, q8 ~( s; O% q* `5 yvoltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not+ Y4 [2 [ D+ ]
applicable.' [: q" U4 H- x/ _. X' u" V
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9 [6 A) j8 q2 T+ g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。* w. a8 a/ o+ I
在实际操作中,大家如何定义"距离受磨损、变形、装配等影响".) J) k- z4 \/ x* G
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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?
/ o$ G# ~! m! F7 v) y; R- I' l$ x; O注 PCB线路板整体灌胶.! v0 n& _8 K K3 J2 D
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