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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 :
, M, q+ l5 b8 y6 x24.5 As an alternative to the spacing requirements of Table 24.1 or Table 24.2, as appropriate, the
# P& b+ X% A nspacing requirements in the Standard for Insulation Coordination Including Clearances and Creepage0 I$ \8 B/ J o7 q2 W
Distances For Electrical Equipment, UL 840, may be used. The spacing requirements of UL 840 shall not
/ a4 o: W6 |# ?% p9 S: D" Nbe used for output wiring terminals and spacings to a dead metal enclosure.
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( T( }4 D9 u5 u% F.......
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9 M! p7 \ Q7 y6 h }; R, P; U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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251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2.1 {$ Q( W0 w% Z' F. ]! g4 G
/ ?" p2 m+ Z0 X' [如果真要这样的话,Y电容和光耦怎么去满足啊? |
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