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The values of the temperature rise in Table 3 of IEC 60065, second and third column, are# I# W/ U( { U9 | i1 G
based on a maximum ambient temperature of 35 °C. Because the test will be made with the: H: z# n9 b( n7 J6 `8 F
case temperature at tC, the relevant ambient temperature shall be measured and the values in
$ C5 Z& n% H3 h; eTable 3 changed respectively. If these temperature rises are higher than those allowed by the
5 |. q5 j. p3 N/ q& v+ j# {class of the relevant insulating material, the nature of the material is the governing factor. The5 z9 V1 G/ z8 c. W8 K7 V
permissible temperature rises are based on the recommendations in IEC 60085. The& g7 q2 X' V3 z8 B9 k C* B
materials quoted in Table 3 of IEC 60065 are shown only as examples. If materials other than
" i- a0 B! c; {( hthose listed in IEC 60085 are used, the maximum temperatures shall not exceed those which7 l# S j8 l$ y8 w
have proved to be satisfactory.
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下面这段话说 温升是要在Tc 下,如果驱动在整个灯具中做随机,Tc 怎么确定,看哪里的 ,
0 M) I H) U% t, R
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