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
* V$ U7 L& B/ ~1 Din 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
/ s) ?8 P4 g# \# c# xin primary circuits,1.5mm minimum spacing are maintained through air and 3.0mm minimum spacing  ...

! V; S2 ?# Y+ J3 t) C这个是哪个标准的啊

jsspace

hzj101988 发表于 2013-5-23 17:27
这个是哪个标准的啊

服了你，这个也被你翻出来了
2 n0 Q8 x7 c: H) E4 z" [9 w3 ^$ jLED灯泡的PCB没有距离要求，满足耐压即可

zhangtaooo

UL 1993
A ballast for high-intensity discharge lamps shall comply with the
requirements of UL 1029 and UL 935.
6.4.2 A ballast not previously investigated as described in Clause 6.4.1 shall be evaluated in the device.
The construction requirements of UL 935 or CSA C22.2 No. 74 or NOM-058-SCFI shall apply. See the
appropriate standard for details on coil insulation materials, thermal and overcurrent protective
1 \6 y4 U8 V7 O  d4 M/ wcomponents, printed wiring boards, and spacing of electrical parts on the printed wiring board.

clause 6.6 and table 6.1.

and LED lamp for ul 8750  clause 7.7 and table 7.4。
$ }( _- t+ ?; _1 M2 Y
3 Q/ F- B1 }- t4 |) X$ D