DIN EN 60034-7-2001 旋转电机.第7部分:结构型式、安装配置和终端接线盒位置(IM码)的分类
Rotating electrical machines - Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM code) (IEC 60034-7:1992 + A1:2000); German version EN 60034-7:1993 + A1:2001