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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 :
$ h( y5 \% U7 N; K24.5 As an alternative to the spacing requirements of Table 24.1 or Table 24.2, as appropriate, the
& q1 b0 p' Q0 _" K" D) @spacing requirements in the Standard for Insulation Coordination Including Clearances and Creepage
2 g; X/ {. }) }( d+ h- zDistances For Electrical Equipment, UL 840, may be used. The spacing requirements of UL 840 shall not9 r# |7 U: r7 p# R. A& t" {. s. y
be used for output wiring terminals and spacings to a dead metal enclosure.# N6 S( Y7 R) q [
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8 q3 q8 [: m, J+ h1 x7 U8 {9 E& N! @" _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.& J* _# y, H; p4 w7 R3 f$ m
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251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2." R& h8 v# m- J' `$ j6 s% V, W
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如果真要这样的话,Y电容和光耦怎么去满足啊? |
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