frzh2012 发表于 2013-5-15 16:44

温升

各位大神,我想问个问题,UL60065中 正常工作条件下CLASS B 对应温度为 95K(以温带35 ℃来说就是130K), UL60950中对应的CLASS B温度为120 ℃,这两个CLASS B 对应温度为什么不一样?

yaotongsuo 发表于 2013-5-15 17:26

UL60950:it is based on the assumption that the room ambient air temperature will be 25 °C when the equipment is operating.
UL60065:The values of the temperature rises are based on a maximum ambient temperature of 35 °C for moderate climates and of 45
°C for tropical climates

阿bin 发表于 2013-5-15 22:35

温升值都是95K,只是60065在35℃条件下换算是130℃,60950如果在35℃下换算也是130

frzh2012 发表于 2013-5-16 09:15

yaotongsuo 发表于 2013-5-15 17:26 static/image/common/back.gif
UL60950:it is based on the assumption that the room ambient air temperature will be 25 °C when the ...

谢谢,这个标准中能找到?

yaotongsuo 发表于 2013-5-16 09:30

frzh2012 发表于 2013-5-16 09:15 static/image/common/back.gif
谢谢,这个标准中能找到?

03版的有,07版好像是改掉之前的话,可以看看1.4.12章节,安规的理念不会变的。

hgf397556998 发表于 2013-5-16 09:58

试验温度的限值不一样啊!60065是35啊!60950是25吧!
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