标题: LED模组不同极性之间爬电距离问题 [打印本页] 作者: 付小胜 时间: 2018-4-28 08:37 标题: LED模组不同极性之间爬电距离问题 供电电压100Vdc左右的LED模组，请问+/-之间的爬电距离是多少？ 2 {/ ]' l) o/ j( C S! F2 z% q纠结了很久，是应该参考61347-1第16章节的table7还是14章节的table5。 [, U0 V& R+ b* s X' G8 E# X0 X
16.1 。。。Distances which provide basic insulation for the same circuit between live parts of different polarities on printed circuit boards are exempt from the requirements of this subclause,because they are tested according to Clause 14. 7 X& c& y; N8 R% tValues for creepage distances and clearance given in this subclause are the absolute minimum. Exemptions for PCB are given in Clause 14. 2 f; X4 I* g; c( I+ S0 x6 D0 c/ x; _
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14.2 Short circuit across creepage distances and clearances, if less than the values specified in Clause 16, taking into account any reduction allowed in 14.2 to 14.5. } m3 [ Q: P/ z4 _2 @Creepage and clearance distances below the values of Clause 16 are not allowed between live parts and accessible metal parts and between different circuits. This requirement is also applicable between tracks of printed circuit board. + U7 U8 i3 }6 \5 C0 o+ w4 i& y1 L# V3 K- U% C* I5 u 作者: Nezof 时间: 2018-4-28 10:59
这个其实可以不计作者: 付小胜 时间: 2018-4-28 11:24