目录简介 | Contents IEC FOREWORD 1 Scope 2 Normative References 3 Letter-symbols for dimensions 4 Designation of machines 5 Location of the terminal box 6 Position of holes in the mounting flange 7 Fixing dimensions 8 Shaft extension, keys and keyways dimensions. Greatest permissible torques on continuous duty for a.c. motors 9 Tolerances for flange-mounted machines 10 Preferred rated output values 11 Dimensional sketches Annex A (Informative) Guide for the selection of dimensions Annex B (Informative) Reference planes and symbols for mounting dimensions of rotating electrical machines Annex C (Informative) General requirements on tolerances and limit values for mounting dimensions |