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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* l% Y9 p4 `8 L/ Q
b) The values of the ambient temperature and the temperature measured at 1,1 times (the# K' N8 U" Q C, _
rated voltage or the maximum of the rated voltage range) are plotted on a graph (Figure 9)
: n: q+ Q* \' P, n. {! c; uand the best straight line obtained using linear regression is drawn through these points.
- m7 J% p5 u+ |+ A1 r( LThe extrapolation of this straight line shall not reach a point representing a mounting
5 v d; Q2 R3 D3 A4 _4 ysurface temperature of 180 °C at a ballast or transformer winding temperature of less than
: c# x" L, y9 j% _( R350 °C.
1 i8 T5 v* ~* O2 E ]+ D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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