UL1993 对于PCB的间隙要求

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UL1993对于PCB的间隙没有要求，满足耐压测试即可？

babyliss

有呀
in primary circuits,1.5mm minimum spacing are maintained through air and 3.0mm minimum spacing are maintained over surfaces between the current-acrrying parts of opposite polarity on PCB of power unit.And 1.2mm minimum spacing are maintained through air and over surfaces of insulating material between current-carrying parts of opposite polarity and between such current-acrrying parts and dead-metal prats or low voltage isolated circuits.

jsspace

引用第1楼babyliss于2011-06-16 14:49发表的  :
有呀
in primary circuits,1.5mm minimum spacing are maintained through air and 3.0mm minimum spacing are maintained over surfaces between the current-acrrying parts of opposite polarity on PCB of power unit.And 1.2mm minimum spacing are maintained through air and over surfaces of insulating material between current-carrying parts of opposite polarity and between such current-acrrying parts and dead-metal prats or low voltage isolated circuits.

是啊，我就觉得奇怪啊，我是在以份培训资料里看到说满足耐压就可以了

shideyuan

有要求，电气间隙，和爬电距离都有要求，不只是满足耐压

hzj101988

babyliss 发表于 2011-6-16 14:49
有呀
in primary circuits,1.5mm minimum spacing are maintained through air and 3.0mm minimum spacing  ...

/ y1 J4 J& n# ]; b  v这个是哪个标准的啊

jsspace

hzj101988 发表于 2013-5-23 17:27
! f' }! n: X* @& Y) s. J* P这个是哪个标准的啊

% R- W" |0 }- v3 y9 t服了你，这个也被你翻出来了
LED灯泡的PCB没有距离要求，满足耐压即可

zhangtaooo

UL 1993
- X* R, K* [$ a3 V) SA ballast for high-intensity discharge lamps shall comply with the
- q" x6 P/ L* h& W! C7 jrequirements of UL 1029 and UL 935.
: E; [7 k# L$ {0 q8 Q6.4.2 A ballast not previously investigated as described in Clause 6.4.1 shall be evaluated in the device.
2 M: W$ p) @& jThe construction requirements of UL 935 or CSA C22.2 No. 74 or NOM-058-SCFI shall apply. See the
0 @8 X9 C& H9 d3 _. B6 o8 ~appropriate standard for details on coil insulation materials, thermal and overcurrent protective
. Q& u3 Q7 U" J, e6 Z# Wcomponents, printed wiring boards, and spacing of electrical parts on the printed wiring board.

/ S( o5 Z7 O  Q: u- Bclause 6.6 and table 6.1.

and LED lamp for ul 8750  clause 7.7 and table 7.4。