|
本帖最后由 shuaijiachen 于 2016-8-26 22:17 编辑
$ P3 W; d8 I' F& l/ w1 r8 |" q7 H! k7 \- w
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!
, m& k0 l6 G7 z- d/ p标准原文:
8 d t" a ?0 v0 r: E& e44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened! K, U8 d6 M, r
cloth and then operated until the moisture has been evaporated and the heating surface of the unit has, W, w( {2 F: R$ q
attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during: Y# W( N' b9 F3 W) L, [+ F
which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be' k4 F( Q, }# Q4 U/ `
conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be$ _% N3 U ?2 V3 n) U6 \5 C" u
measured throughout the test.$ l# M2 a3 i: C$ k2 M4 g# S+ D
8 t! J+ y) \* w0 ~" G2 Q0 o6 g4 k0 T
: M+ o5 Z" `9 L% w44.1.21 For an appliance in which clips to be applied to the hair are heated by an external heater, the3 i; A( I2 a; B
test is to consist of operation of the appliance until temperatures are constant, with the clips in place on
( j9 l* I4 \# L7 Y: jthe heater.
6 |. |5 F1 f- ~5 j" ?* A
3 F1 F3 Q; g4 _8 M
' @3 b& {3 E. V疑问如下:7 E8 Q0 t; C3 I' A# F
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?+ |6 b) w* k! [, p
! G9 M. p& K( W" o$ F( {
7 {, \" `3 j- y# c9 g% R X7 q+ W
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。0 j! V1 M5 ^5 i# {% ^- `
/ J" t& a4 F G, ^& k% P
9 W. V, }0 I) S; b$ F: L" v
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?
. q* h- F: y) Q. W. h5 P4 ^* i
: T+ ]2 O* [/ P% {. F: z5 @) N2 x: V$ s4 U+ I
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?6 X6 {6 L( X: o$ A
|
|