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本帖最后由 shuaijiachen 于 2016-8-26 22:18 编辑
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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!
, w3 a. c: U! k8 k' j/ }5 {7 u标准原文:
* z/ I9 X2 X) x1 G; Z* b/ Y1 a9 ]6 p% _44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
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8 n% w1 M8 d2 C# Mattained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
3 {, h5 s1 E# i% i+ Iwhich it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be, O/ R8 A$ \+ \8 L
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be
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7 y W, \. A+ T5 }2 t+ a44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the
$ G7 i! Q+ U* K0 x" j, qtest is to consist of operation of the appliance until temperatures are constant, with the clips in place on C: G4 |4 Q# d% ?# p
the heater.8 \& n c+ ]* J {6 q- y/ `
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; V6 l7 F- |! L8 _6 X5 g$ N2 J) @疑问如下:
7 @/ g: V0 Y# N# _' ]2 @5 S1,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?/ U2 p/ F' t3 f. Q! e+ {8 G# L
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4 {) h2 \# Y/ P7 O2,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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Y0 }# V, t" ?4 u% K V4 _' `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?9 X4 f5 M) n6 M
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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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