Historical
BS EN 60034-7:1993
Rotating electrical machines. Classification of types of constructions and mounting arrangements (IM Code) (British Standard)
Provides a uniform system of codification. Code I is an alpha-numeric code covering machines with endshield bearings and one shaft extension. Code II is all numeric and applies comprehensively to a wider motor range, including those covered by Code I.
British Standards Institution [bsi]
