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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
w2 y& l" N/ Q Hb) The values of the ambient temperature and the temperature measured at 1,1 times (the
) d) B; w0 m( t/ X, W* srated voltage or the maximum of the rated voltage range) are plotted on a graph (Figure 9)) T* S: Y9 y4 {' D
and the best straight line obtained using linear regression is drawn through these points.( j. \' w. X5 \/ |6 P! [
The extrapolation of this straight line shall not reach a point representing a mounting
3 Z+ o- N' G% T, n, Y% D& Nsurface temperature of 180 °C at a ballast or transformer winding temperature of less than
9 U) j, i) F! r% y; `350 °C.
" O& R0 p3 T, U; q3 s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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