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标题: UL1993 对于PCB的间隙要求 [打印本页]

作者: 622 时间: 2012-1-27 17:36
标题: UL1993 对于PCB的间隙要求
UL1993对于PCB的间隙没有要求，满足耐压测试即可？

作者: zjh407 时间: 2012-1-27 17:36
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.

作者: 622 时间: 2012-1-27 17:36

原文 :
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

作者: mxoghwcsxo 时间: 2012-1-27 17:36
有要求，电气间隙，和爬电距离都有要求，不只是满足耐压

作者: suqaxs 时间: 2012-1-27 17:36

原文 :
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.

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.

这个是参考ＵＬ１９９３的哪一条款呢，知道的指教一下，谢谢！

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