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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 of3 e" @( j" C! m: m' A. ] ]0 ?# W# {
seven successive cycles of 24 h. Supply voltage as specified in item d) below shall be
+ [ n/ S4 _$ N4 Y$ x6 H: Bapplied to the luminaire for the first 21 h and disconnected for the remaining 3 h of each
/ L1 p9 i5 | g& ?: d! Y2 x7 j2 tcycle. The initial heating period of the luminaire is part of the first test cycle.
( Y; {" g& V+ G4 T! j( _$ W& {6 R) eThe circuit condition shall be as in normal operation for the first six cycles, and as in$ |7 Q; c9 y0 J' ~6 K
abnormal operation (see Annex C) for the seventh cycle. For luminaires containing an3 ?9 V& k6 u4 g7 v( p7 G0 j
electrical motor (e.g. a fan) the abnormal condition which most adversely affects the result
' Y+ n" y% b3 L8 f( |7 yof the test shall be selected.5 a) p; y! \! m$ J3 f
For luminaires for which there is no abnormal condition test according to 12.5.1, the total& l: F" Q) J, y/ F& |8 u2 h
test duration shall be 240 h (i.e. 10 x 24 cycles at normal operation). For filament
9 u8 X, z$ G4 K5 zluminaires, the total test duration of 240 h shall apply in all cases.
0 ^& K) M; N# ^1 ~8 [ U( b5 P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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