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你可以看12.6合格性判定方法那几条,要求比12.5要多
7 ^& K3 G5 O3 G: w2 M0 db) The values of the ambient temperature and the temperature measured at 1,1 times (the
+ e0 H, }% _: V2 {6 i5 grated voltage or the maximum of the rated voltage range) are plotted on a graph (Figure 9)" ~ ]. }' }" c
and the best straight line obtained using linear regression is drawn through these points.
" A# Q8 o1 j2 ?3 r- xThe extrapolation of this straight line shall not reach a point representing a mounting
! U/ \7 s5 m" x/ ^, S2 X( Rsurface temperature of 180 °C at a ballast or transformer winding temperature of less than
! J! g# r L# o* P7 M- z3 C350 °C.
- M% B2 O/ w9 v c/ H它要求要绘一个曲线图的,如果一个灯,做12.5时,稳定后安装面的温度没有超过130度,但它在很短的时间内就升高了,这时用曲线图的话,可能就不合格了 |
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