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看标准原文.
( \3 t& Z+ `! @4 i( E12.3.1 Test
" s. j, k% J& ~# `" Ka) The luminaire shall be mounted in a thermal enclosure with means for controlling the w& x- |# g, e% {. a; [. Q4 @
ambient temperature within the enclosure.6 t+ `0 V9 S( L' ? I
The luminaire shall be positioned on a similar supporting surface (and in the same
- Z8 t9 L3 U/ k: V3 H( |# p- foperating position) as for the normal operation thermal test (see 12.4.1).
! a% I1 P- `+ O7 j0 zb) The ambient temperature within the enclosure shall be maintained within ±2 °C of (ta + 10) °C9 ?' h$ ^3 w; V& J- @0 @
during the test; ta is 25 °C unless otherwise marked on the luminaire.
, \2 Q, R7 ?& \) V" kThe ambient temperature within the enclosure shall be measured in accordance with
4 }6 ?4 g! C; r3 @4 `, K" E0 \Annex K. Ballasts for operation separate from the luminaire shall be mounted in free air, not
2 Z0 G2 F7 M% i$ s/ J9 ?. Wnecessarily in the thermal enclosure, and shall be operated in an ambient temperature
" k" ?- E: i0 Xof 25 °C ± 5 °C.
; h9 C! i# z! Y% ?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. |
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