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发表于 2010-8-20 14:55
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c) The luminaire shall be tested in the enclosure for a total duration of 168 h consisting of
. Z, k; A5 b. iseven successive cycles of 24 h. Supply voltage as specified in item d) below shall be
% C( W) [) {! J$ d4 G; f; H! V& J3 ?applied to the luminaire for the first 21 h and disconnected for the remaining 3 h of each. k/ g- I3 ?# K! ~8 ?: j
cycle. The initial heating period of the luminaire is part of the first test cycle.
+ Q0 J8 v( | v8 H$ Q$ rThe circuit condition shall be as in normal operation for the first six cycles, and as in
Z. k+ G# }/ l* }! f, o- N/ ?abnormal operation (see Annex C) for the seventh cycle. For luminaires containing an
0 P9 Q" i% [4 M6 r5 }$ ?& selectrical motor (e.g. a fan) the abnormal condition which most adversely affects the result( _6 i8 V$ d2 E" N# |' ]( G
of the test shall be selected.
- G, F* }- C# XFor luminaires for which there is no abnormal condition test according to 12.5.1, the total
* f3 k2 \. U8 K4 i1 ^; g& o1 B8 u3 ttest duration shall be 240 h (i.e. 10 x 24 cycles at normal operation). For filament5 m" K: n' V2 m* D+ N$ K: C/ M1 j
luminaires, the total test duration of 240 h shall apply in all cases.& N, D5 G# ~* L @* O! T1 o
标准的语句我拷下来了。最后一段的意思实在是没法理解,特别是最后一句,用灯丝灯泡的灯具要怎么做耐久?还请高手解惑。谢谢! |
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