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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。2 R2 l* u0 y4 G: `9 b) K9 O* R" y
http://www.angui.org/read.php?tid=8740
0 W7 J. `, J" F; U! d在有些标准中有定义：
2 e8 P* w! V- Y5 s6 P9 i! U7 f# u1.引用kuiyin001 \Hand-held appliances are operated for 20 min.' j1 a6 c7 X9 ?5 x5 o
Other appliances are operated until steady conditions are established.--60335－2－32 章节11.7! U! X2 @& w8 W! k
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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
0 N. O* y2 e, K3.引用caballo3157. R" B6 _; U- W$ y
IEC60598:
) \# b$ `% R' x+ h2 N12.4.1 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.
* h7 W5 R T* P% h0 cUL1029:
% |- b3 x$ h" B! Z E21.1.6 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.
4 t) q/ I3 ]7 _ j) }- iUL1278:5 l' e" x/ e$ Z4 ^/ K
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.
) O/ c w, @1 _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
; P* d9 S0 ]! _3 w" p7 K' A! n0 _请各路高手多多指点及补充。 |
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发表于 2011-7-5 16:49
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