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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。
: e" \, ` B/ X5 lhttp://www.angui.org/read.php?tid=8740
B; Q' r0 X% _& T M6 R- M% s f在有些标准中有定义:6 E, g5 d6 r q5 f4 \4 g! D
1.引用kuiyin001 \Hand-held appliances are operated for 20 min.4 s0 V4 S1 C" i" u( ?
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 C( m8 J- v& t @3.引用caballo3157
6 h0 f3 L* z9 _! t- fIEC60598:
* Q; U" Q3 P/ B12.4.1 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. + S' ]% w9 C$ V. n/ u
UL1029:# ]8 A% C0 d6 K9 V% e' w
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. W+ X9 m" H% [0 J1 N$ J' ^
UL1278:+ m# A. ^+ e" W3 R: U
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.
5 i) M/ S. c9 r5 [/ K4 b4. 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" C1 M. G2 _9 N
请各路高手多多指点及补充。 |
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