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标题: 请教UL 1029 放电灯镇流器距离要求 [打印本页]
作者: guxia    时间: 2011-2-18 11:00
标题: 请教UL 1029 放电灯镇流器距离要求
这里有一个放电灯镇流器,金属外壳是接地的.测量PCB边缘的焊点点到金属外壳的电压有400V左右.$ v5 |( C: P: l8 B$ T6 [
那么这个点到金属外壳的距离是不是要求有9.5mm呢.
) d0 W* B6 Q9 d% M0 ZUL 对于接地的外壳也要有这么大的要求么?8 a8 g7 [. A  l$ a

6 f: A( z7 E: G请教高人.
作者: Liu    时间: 2011-2-18 11:43
根据UL 1029的：" t9 I( K2 E; P
15.1 Spacings through air (clearance) and over surface of insulating material (creepage distance) between:1 F3 ]3 }6 [/ Y9 V# {) o, H
a) Uninsulated live parts of opposite polarity, and8 i0 C. G# f" y; Q
b) An uninsulated live part and a dead metal part that may be grounded, a metal part exposed to contact by persons, or a metal surface on which the ballast is mounted as intended, shall be not less than indicated in Table 15.1.
* j+ B- J( }, T) J9 }# T& a5 C' h7 ~
确实是这个要求，没错。
作者: guxia    时间: 2011-10-10 22:11
谢谢。了解了。



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