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本帖最后由 shuaijiachen 于 2016-8-26 22:18 编辑
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( K5 S% Y2 v" v请教各位大师关于UL859:2012中section 44 的温升测试方法问题。我看标准很有歧义,公司做法跟我的理解好像不一致!1 a# ^. j+ X" Y3 h6 [
标准原文:
$ n% D+ b& Z0 b$ k+ h7 `44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
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attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during+ S; q; E- Q1 Y; F1 d
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be& R: `9 i7 F* m- X2 [
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be
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9 G% y' X) u0 _$ v44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the, _8 ]8 i; Z, n, Y
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
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6 U) m! w( F0 Y& X$ |疑问如下:
N' \6 B+ c2 J* o6 u& p( M( x1,直发器和卷发器的温升测试方法是一样的吗?具体步骤是怎么样的?
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2,我看标准理解是:直发器和卷发器测试方法一致,发热板上夹湿布,开始上电,直到蒸发完成且发热板表面温度达到204度时,断电;停止2分钟,期间换上第二块湿布,再次上电,直至温度达到204度,完成测试(总共测试2cycles)。这种理解正确吗?难道只做2cycles/换2次湿布就可以完成温升测试了?好像这样温度都没有达到稳定状态。
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4 i+ l- z3 P4 b- r U7 M' n |; N4 |3,标准说达到204度后断电,换湿布,那么如果我们的产品发热板表面温度没有达到204度,那什么做测试?: j% Q8 s3 W# ^& l
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4,为什么44.1.19中是测试2cycles,而44.1.21中却说是要一直工作到温度状态?这两个条款是针对不同产品吗?指哪些产品呢?
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