|
你可以看12.6合格性判定方法那几条,要求比12.5要多
. p6 G9 h- \- e2 Y3 \' a6 F( h; O+ Rb) The values of the ambient temperature and the temperature measured at 1,1 times (the
; i5 i0 {+ F' c3 @! C orated voltage or the maximum of the rated voltage range) are plotted on a graph (Figure 9)) a/ Y, M7 S3 w6 _, R
and the best straight line obtained using linear regression is drawn through these points.1 r; L( M5 ^) F: d P* k. q4 A
The extrapolation of this straight line shall not reach a point representing a mounting# G. o* z6 u$ f( S2 X( |6 }/ y
surface temperature of 180 °C at a ballast or transformer winding temperature of less than' @! \$ q$ [" b! t F, i
350 °C.
6 a6 @. x4 j f: P5 `$ ~1 A$ V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 |
|