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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% ^) n- P* t4 a
http://www.angui.org/read.php?tid=8740/ B! J; E: k, A" R2 Z* V
在有些标准中有定义：, ?5 Y+ P) K. F. b
1.引用kuiyin001 \Hand-held appliances are operated for 20 min.
" ^: x* E4 d6 i. f( X5 x* gOther appliances are operated until steady conditions are established.--60335－2－32 章节11.7
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' L# y# X1 m& g) q2.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
# g; {* \1 u0 w0 Q& K) R9 q( ]3.引用caballo3157
# e- Y J9 d( }* L: g m4 ^' AIEC60598:
& g! J; f$ G+ z# d/ W) }3 c12.4.1 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.
2 U; J6 J6 m& [; f) eUL1029:( E8 }" p E+ |$ |
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.
; S' J. z! h0 f$ |UL1278:0 W: W- C4 O0 p( p/ ]. Z
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.
, ]6 V8 t! Y8 f3 O7 I4. 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
0 k/ z9 Y ?. L( I6 d" D2 s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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