|

楼主 |
发表于 2013-10-7 09:54
|
显示全部楼层
Nezof 发表于 2013-10-7 09:39 4 `! f( N4 [+ Z# x/ M+ P
两个标准年份不一样,可能还没更新吧 6 ]8 [; y) z; r
60335-1 © IEC:2010 里面第36页有这么一句话,可以算答案吗?-----k is equal to
- y* }2 \5 F: B1 y" ]• 225 for aluminium windings and copper/aluminium windings with an aluminium content
3 Y8 G$ u: T* E$ H/ j3 X2 T3 K≥ 85 %,
' P0 s) n! }% c* w( k• 229,75 for copper/aluminium windings with an copper content > 15 % to < 85 %,+ U9 R1 R3 y9 n* J
• 234,5 for copper windings and copper/aluminium windings with an copper content
" h5 G8 |- e) H! s ~( x≥ 85 %; |
|