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Nezof 发表于 2013-10-7 09:39 9 y- I( v. o7 ]
两个标准年份不一样,可能还没更新吧
( d1 L$ O5 {0 [+ k2 O4 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
p9 B8 `. ]3 B) e5 b. P• 225 for aluminium windings and copper/aluminium windings with an aluminium content7 @" v1 h& l4 Q# Z
≥ 85 %,
8 y. `! }) ~3 W. X# k" e3 _! S• 229,75 for copper/aluminium windings with an copper content > 15 % to < 85 %,
8 n+ _" J$ ?' c+ P( L U: a2 n1 c• 234,5 for copper windings and copper/aluminium windings with an copper content
- S* l5 `5 [: p9 H≥ 85 %; |
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