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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
3 F( T) s$ m+ y& E- S: j' G3 y6 K8 ^seven successive cycles of 24 h. Supply voltage as specified in item d) below shall be0 b2 d$ v. V7 M) |3 V% F
applied to the luminaire for the first 21 h and disconnected for the remaining 3 h of each
1 t+ h* r) @* I# d$ ^8 @1 wcycle. The initial heating period of the luminaire is part of the first test cycle.
& |: S' a9 R8 h0 R7 Q. v0 LThe circuit condition shall be as in normal operation for the first six cycles, and as in# p0 t [. A, Q9 }' P) |
abnormal operation (see Annex C) for the seventh cycle. For luminaires containing an; L1 J2 u2 ?3 v; d6 w
electrical motor (e.g. a fan) the abnormal condition which most adversely affects the result) P7 f1 y+ y7 J( V
of the test shall be selected.: f% x3 s. ]# w$ F7 u" ?2 x
For luminaires for which there is no abnormal condition test according to 12.5.1, the total- [, r# o0 z4 S9 _; s
test duration shall be 240 h (i.e. 10 x 24 cycles at normal operation). For filament% D5 S1 U& f" o* [! q# h; K4 J
luminaires, the total test duration of 240 h shall apply in all cases.0 k: c- H& F% f8 s" l8 B) z
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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