|
看标准原文.5 ^# F. e# Q8 d( R
12.3.1 Test$ H- o5 z' P x6 f/ @+ ]
a) The luminaire shall be mounted in a thermal enclosure with means for controlling the0 }) t% H5 w. z
ambient temperature within the enclosure.
: T3 |$ A' T2 o$ U* vThe luminaire shall be positioned on a similar supporting surface (and in the same
# B; k) }# \6 S; G5 X5 Eoperating position) as for the normal operation thermal test (see 12.4.1).' J4 @# I7 z, m- }3 d
b) The ambient temperature within the enclosure shall be maintained within ±2 °C of (ta + 10) °C& j7 g$ a2 M4 [, J# Z
during the test; ta is 25 °C unless otherwise marked on the luminaire.
: s8 {, q+ ?3 a" P4 u5 ^) `The ambient temperature within the enclosure shall be measured in accordance with1 D t) r1 ] c8 I# K
Annex K. Ballasts for operation separate from the luminaire shall be mounted in free air, not
8 j) D0 g. m* ^+ z' p/ }7 s; Ynecessarily in the thermal enclosure, and shall be operated in an ambient temperature
8 g1 i$ l) @& | y! pof 25 °C ± 5 °C./ ^- T) ^9 _% r* F1 v/ n
写得很清楚,是在恒温箱里做的,至于要用木箱还是别的什么箱则不做要求,只要求温度恒定. 其实这种常规测试, 找本标准看看比问人快. 至于空气对流的问题, 在任何测试中, 稳定的空气条件都是基本要求.除非样品本身问题无法实现.例如风扇,气泵什么的. |
|