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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。- ?( q, x# r, M
http://www.angui.org/read.php?tid=8740
7 n# q0 r( j1 c& G" |6 h- \9 b在有些标准中有定义:
3 P; w" c2 l( k! f& U. _0 b1.引用kuiyin001 \Hand-held appliances are operated for 20 min.
6 p4 E4 S: `: U* Q1 SOther appliances are operated until steady conditions are established.--60335-2-32 章节11.79 y9 {5 Q- ]" H0 ~% t. P
; Y* s, |( i( n i0 I2.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
, n6 [0 b a$ \ y( D" f; P* D3.引用caballo31573 M# z2 A" {0 ^6 Z+ P8 N
IEC60598:9 u) k$ h& F6 C3 }- b/ D
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.
3 q, V p9 v9 w6 P$ o2 F' gUL1029:' L$ x+ h0 g, m9 m
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.) N! Q- O( Y2 P3 h
UL1278:
3 {9 ~; {2 h* T39.1.8 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., O7 k0 M% y# _( e2 F" U
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
5 L" o3 t3 a7 i0 v3 A8 m请各路高手多多指点及补充。 |
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