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Nezof 发表于 2013-10-7 09:39 ' I8 s6 D+ p+ B; Y% Q
两个标准年份不一样,可能还没更新吧
y2 ] i- i; f& I8 k# C60335-1 © IEC:2010 里面第36页有这么一句话,可以算答案吗?-----k is equal to
) U! W8 M( u0 _! B• 225 for aluminium windings and copper/aluminium windings with an aluminium content' {& ?! v8 T) e- |! ]0 I9 X
≥ 85 %,5 t/ A, e0 \0 T W% T# |6 P8 ^
• 229,75 for copper/aluminium windings with an copper content > 15 % to < 85 %,2 g% C# c [9 c( J0 N
• 234,5 for copper windings and copper/aluminium windings with an copper content, J% T" z7 p7 s7 U
≥ 85 %; |
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