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楼主 |
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 of4 l2 B) _$ F D* p3 m0 n0 g" k- ~
seven successive cycles of 24 h. Supply voltage as specified in item d) below shall be( K% b) O5 F1 T
applied to the luminaire for the first 21 h and disconnected for the remaining 3 h of each
/ V- J* q# ~$ b l8 N* fcycle. The initial heating period of the luminaire is part of the first test cycle.
4 G) p; }" c+ f2 {# kThe circuit condition shall be as in normal operation for the first six cycles, and as in1 h1 g8 ?% C1 t, X7 X# s
abnormal operation (see Annex C) for the seventh cycle. For luminaires containing an% M, M. e0 [# X* `) @' t* s1 C3 C
electrical motor (e.g. a fan) the abnormal condition which most adversely affects the result) o: d% b1 A6 @( u* H; M( Q
of the test shall be selected.: N* n& i5 w6 N& x+ y( U" q
For luminaires for which there is no abnormal condition test according to 12.5.1, the total0 r9 R$ B0 E% a- L3 ]$ a5 X
test duration shall be 240 h (i.e. 10 x 24 cycles at normal operation). For filament$ }+ F, P* u' J- ?& D" S
luminaires, the total test duration of 240 h shall apply in all cases.9 i# S# [+ ^1 o) c( j3 i/ A
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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