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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。
+ ^# G3 |2 \1 T& g9 dhttp://www.angui.org/read.php?tid=8740
9 h0 G, `8 O% B' a7 |在有些标准中有定义:
G& S% g* W. e# J9 D* s/ k( F1.引用kuiyin001 \Hand-held appliances are operated for 20 min.
( e+ U: M4 T4 [8 TOther appliances are operated until steady conditions are established.--60335-2-32 章节11.7# ]+ o5 W# v* n* v% j
3 y. q2 N. H/ s) `8 v2 h2.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( [. q- x& @( W- \, ?4 P$ ^+ z8 ?
3.引用caballo3157
9 z' W, \9 @ ~( fIEC60598:/ s+ ~1 m: ~) w" S
12.4.1 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. 0 Q' R5 L: F- V, g* L
UL1029:: z! O/ r+ L! p5 Z! k& Z- ^
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./ D1 d, S6 N; M# M
UL1278:
3 g0 [* r6 f. g5 q( Y4 }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. g9 V2 b: \2 b- y: T( |. G
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1 h+ \3 O" n3 |( d3 S' e1 i
请各路高手多多指点及补充。 |
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