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
8 J5 C$ V5 N; D2 |% w6 d) \" ?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  :
, m4 v" q; j) k9 P- q9 d5 [2 O有呀
" b' J( U9 y; s+ c) Iin 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
3 K6 ]* _. h8 Z1 w1 i2 N/ Rin primary circuits,1.5mm minimum spacing are maintained through air and 3.0mm minimum spacing  ...

这个是哪个标准的啊

jsspace

hzj101988 发表于 2013-5-23 17:27
. o5 }8 u- {& n/ q' s这个是哪个标准的啊

/ ^; e! B& f- g' T2 A  e3 L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
" r' c9 N. o$ W  f& f  m9 cA ballast for high-intensity discharge lamps shall comply with the
+ @3 M9 i, D8 l5 ~+ }; brequirements of UL 1029 and UL 935.
/ S* M% |# y- V3 f! D2 F: e6.4.2 A ballast not previously investigated as described in Clause 6.4.1 shall be evaluated in the device.
* W/ j" B& v" ~- A. \The construction requirements of UL 935 or CSA C22.2 No. 74 or NOM-058-SCFI shall apply. See the
. A4 r8 Y" U) g8 y+ h* tappropriate standard for details on coil insulation materials, thermal and overcurrent protective
components, printed wiring boards, and spacing of electrical parts on the printed wiring board.

/ K% X( w, B! F! N7 B$ }/ rclause 6.6 and table 6.1.

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

/ t( G7 c$ _1 ~& j" D- u: e) H