IEC 60072-1:1967 Dimensions and output ratings of electrical machines - Part 1: Foot-mounted electrical machines with shaft heights between 56 and 315 mm (2 ⅝ and 12 ½ in)
2022IEC 60072-1:2022 Rotating electrical machines - Dimensions and output series - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080
1991IEC 60072-1:1991 Dimensions and output series for rotating electrical machines; part 1: frame numbers 56 to 400 and flange numbers 55 to 1080
1970IEC 60072-1:1967 Dimensions and output ratings of electrical machines - Part 1: Foot-mounted electrical machines with shaft heights between 56 and 315 mm (2 ⅝ and 12 ½ in)