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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 :
: F( q# x9 _6 a4 R+ k3 g6 }- f' ~0 V" d5 L24.5 As an alternative to the spacing requirements of Table 24.1 or Table 24.2, as appropriate, the
" ~. `- c2 q/ V# J* uspacing requirements in the Standard for Insulation Coordination Including Clearances and Creepage
; `4 @( f1 \. {1 eDistances For Electrical Equipment, UL 840, may be used. The spacing requirements of UL 840 shall not
, _% N0 o. i5 z: z/ e1 Cbe used for output wiring terminals and spacings to a dead metal enclosure.
$ i Q4 ]% c8 u4 ]2 E. g; a8 V$ K5 I. t
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0 L0 c; n5 L, b h3 [2 \+ H1 y) ^4 }* i$ U2 _: h. O" f6 e
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.
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3 j+ L, k+ t5 b, [" f251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2.' Q+ f9 ]' o4 [5 ?, i3 b$ D
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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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