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本帖最后由 shuaijiachen 于 2016-8-26 22:17 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！
6 l* Z0 d4 _- ~3 x- V" V% a标准原文：
% |$ O/ R& [7 Z v& k44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened2 [5 f1 P% ] r2 M5 r+ c, n' {
cloth and then operated until the moisture has been evaporated and the heating surface of the unit has
& g# d4 M2 V6 o _ K2 F3 Kattained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
" r' p& Q' S1 B: O* |which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be& P- b7 V) c) ^- O U
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be
5 F2 F N2 w; L! G9 A$ Imeasured throughout the test.2 y) F$ d a1 q7 q
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! X# ?( b5 e* A4 j44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the/ n1 A9 C* |) _: [( H: u. ^
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
4 |( T/ C& }8 E+ p' x! ~) [the heater.
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疑问如下：) `2 e ~$ z+ `( I
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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- j6 {" `* Z! z! z3 n2，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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, A. y; f/ a6 ]: f5 ]; _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？" l2 ~7 C& `- y, e' s
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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稳定状态？这两个条款是针对不同产品吗？指哪些产品呢？
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发表于 2016-8-26 22:09
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