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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5 u8 s7 X7 J" K. I1 Q0 b- a. ?
b) The values of the ambient temperature and the temperature measured at 1,1 times (the
2 Z; ~/ f3 @# e( K' Qrated voltage or the maximum of the rated voltage range) are plotted on a graph (Figure 9)
8 }3 E5 b' u' B q2 q+ j" Nand the best straight line obtained using linear regression is drawn through these points.' r' {5 y3 @& P
The extrapolation of this straight line shall not reach a point representing a mounting
& O2 r3 c3 z+ ]/ esurface temperature of 180 °C at a ballast or transformer winding temperature of less than
; F, J9 w1 G) y. @350 °C.
; A5 o) ?# a8 k O H5 R! h8 g5 c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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