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本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑 ( ?( o W6 a2 Y# }) V/ O4 ^5 s
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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!- O' S: m S- K6 M3 p
标准原文:
$ @% D2 W' R* j Z- D5 r! J44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
5 d9 j) H2 ~0 k3 ~' S' p0 e$ Q% x1 mcloth and then operated until the moisture has been evaporated and the heating surface of the unit has( g2 ?/ M/ L @! r" H* e! C, h
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during8 \+ }" ?7 u e4 y$ b1 Y
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be7 e; S ]" w" R
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be" X5 V8 W7 ^* X% @
measured throughout the test.
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44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the
3 F) I3 i6 a" \. [& `test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
# s" o" y/ Z6 `the heater.% V$ e9 M/ l- p8 m; m% y# L3 x
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疑问如下:: X) `+ j9 z& x& _4 Z- ]4 c0 s* x
1,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。( j/ [7 r6 [9 X I; _: o5 M* s
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( K; r- a. Z: @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?
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) }' m$ J9 [$ H0 E7 q4,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稳定状态?这两个条款是针对不同产品吗?指哪些产品呢?2 d- t) r0 \5 X8 a! A* c/ b+ [
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