|
|

楼主 |
发表于 2010-8-20 14:55
|
显示全部楼层
c) The luminaire shall be tested in the enclosure for a total duration of 168 h consisting of; W) B: V; }1 b( z, Q7 Q2 c5 c
seven successive cycles of 24 h. Supply voltage as specified in item d) below shall be
# i) H/ v' Z i9 w9 X0 iapplied to the luminaire for the first 21 h and disconnected for the remaining 3 h of each
2 @3 M- l6 s! B- G- w" \cycle. The initial heating period of the luminaire is part of the first test cycle.- T# `7 c5 n- W( C. l
The circuit condition shall be as in normal operation for the first six cycles, and as in
( p3 ^( `7 S) {/ E4 j( I6 pabnormal operation (see Annex C) for the seventh cycle. For luminaires containing an
/ B: X+ s1 L* X" r+ o- {electrical motor (e.g. a fan) the abnormal condition which most adversely affects the result1 [0 \5 X, W2 B; |+ L$ m
of the test shall be selected.
& ?$ @% D; d) i) QFor luminaires for which there is no abnormal condition test according to 12.5.1, the total
* R1 P& K3 y6 Z8 r1 f7 x0 P2 ytest duration shall be 240 h (i.e. 10 x 24 cycles at normal operation). For filament! ?0 _, Q& r/ S, T6 ^) y* i" c
luminaires, the total test duration of 240 h shall apply in all cases.2 ^9 Z. Z7 k. e( |
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! |
|