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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！0 B, @& j. w2 g1 t
标准原文：
- ~; J& R/ c' }$ K4 |+ h44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened
0 y8 J- [, c$ w0 W9 b: L) H& s& ]cloth and then operated until the moisture has been evaporated and the heating surface of the unit has0 d0 a* d1 G* ~! u
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during
" i) {2 X4 M( U$ k ^which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be
6 d% W9 I- Z- b( [conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be/ L$ B; K" S8 k) G6 j" U1 p5 Z
measured throughout the test. h/ l* ]! d' n {* U9 u' U
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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; x, B/ z/ w: `( |
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
; `/ K3 r! [* q8 t; }" C# ^the heater.# K$ h+ U, V9 Q3 V* P
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+ V" L6 h6 g6 Q/ ]5 d' l2 G! [2 f疑问如下：/ P' N2 w6 s4 w8 @2 d' A. o
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？% }9 `8 |, u0 }4 N2 {8 L
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) H& E5 ?5 \" M( b2 e2，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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% p4 N' f2 n5 y5 I7 X7 Z3，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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$ f+ b, A6 i! q$ t9 p: W( h/ r4，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？+ \9 f( E# |1 I$ l# d
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发表于 2016-8-26 22:13
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