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楼主 |
发表于 2011-3-21 14:55
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引用第6楼Liu于2011-03-18 22:01发表的 :
) V! B" `# [5 w' S; b* \6 y24.5 As an alternative to the spacing requirements of Table 24.1 or Table 24.2, as appropriate, the9 t( ~8 r: T) P/ C0 b' [) @! s
spacing requirements in the Standard for Insulation Coordination Including Clearances and Creepage, Y2 F) R4 v/ \5 q2 N
Distances For Electrical Equipment, UL 840, may be used. The spacing requirements of UL 840 shall not
/ d0 o7 l. }) l& gbe used for output wiring terminals and spacings to a dead metal enclosure., X5 j6 X" k+ p( X
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谢谢大家的积极帮助,其实我要问的问题就是:给LED模块供电的驱动器(电源),它的间隙和距离是否需要测量变压器两端的工作电压来定距离,还是直接查看额定电压,然后对照UL1310表格24.2电压来判定距离呢?像60950/60065光耦两端和Y电容两端的距离跟变压器两端距离要求都不一样的.8 `, g$ O, e1 X% _& B1 I
5 t8 D$ }9 O: {) g- P251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2.
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+ I$ Q/ _3 Y. M# @如果真要这样的话,Y电容和光耦怎么去满足啊? |
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