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看了寒烟翠以下链接的文章后,真是受益颇多。只是对试验稳定条件建立时所对应的时间没有明确的定义。
! {$ Y- h7 N5 W8 g" U+ m* Ohttp://www.angui.org/read.php?tid=8740, t% j, C- D! \: u
在有些标准中有定义:
* c. K( i5 a: R/ l6 o4 D* a& V1.引用kuiyin001 \Hand-held appliances are operated for 20 min.9 f# \3 u" N# Q& l8 N1 j2 Q
Other appliances are operated until steady conditions are established.--60335-2-32 章节11.7
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2.The temperature is considered to be stabilized when three successive readings, taken at intervals of 10 percent of the previously elapsed duration of the test but not less than 5 minutes indicate no change.---UL859 /37.1.10
4 a! g: R3 j# H7 s3.引用caballo3157. K( P. k/ \5 [8 n, g! u; H
IEC60598:
3 v. y1 f3 R1 x u U7 Z, i12.4.1 f Measurements shall not be taken until the luminaire has stabilized thermally, i.e. temperatures are changing at a rate less than 1 °C per hour.
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21.1.6 A thermocouple-measured temperature is to be considered constant if three successive readings, taken at not less than 15-minute intervals, indicate no upward change.0 k/ {! S! v& p8 \- F' ?# p# {
UL1278:( B: Z: r9 J) S' c4 W6 V' S2 f
39.1.8 To determine whether a heater complies with the requirement in 39.1.1, it is to be operated continuously until constant temperatures have been reached. A temperature is considered to be constant when three successive readings, taken at intervals of 10 percent of the previously elapsed duration of the test (but not less than 5-minute intervals), indicate no change." F% S4 H$ b5 q% `. z* J0 L
4. 引用寒烟翠:所谓的稳定的意思是一个小时内温度上升不超过1度就可以停止测试,当然是指所有的点;不知是通标EN60335中哪个章节?5.UL1082第33.1.8条等等! J, ?" }* I, g( z6 F
请各路高手多多指点及补充。 |
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