dai7833215 发表于 2013-4-13 08:40

美规工作灯用153标准关于内置电源爬电距离要求

各位好，刚接触美规灯具，想请问下工作灯（用UL153标准）内置电源火线L与零线N的爬电距离和空气间隙要求是多少，及初次级距离要求是多少呢？在那个章节，电源输出为30V RMS

cwlee 发表于 2013-4-13 09:37

UL153便携式灯具爬电距离及空气间隙要求可以参考Clause 24.

24 Electrical Spacings

24.1 The spacing between uninsulated live parts of opposite polarity,and between uninsulated live parts and metal that is capable of being grounded shall not be less than1/4inch(6.4mm)through air or 3/8inch(9.5mm)oversurface.The outer wrap of an open core and coil ballast is determined to be an uninsulated live part with respect to this requirement.

dai7833215 发表于 2013-4-13 09:44

火线L和零线的空气间隙距离要6.4MM？那么大

vickywu 发表于 2013-4-13 10:47

內置電源有灌膠嗎？

dai7833215 发表于 2013-4-13 10:49

没有灌胶的
页: [1]
查看完整版本: 美规工作灯用153标准关于内置电源爬电距离要求