IEC 60034-12:2016 is now available as \/2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60034-12:2016 specifies the parameters for eight designs of starting performance of single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 that: – have a rated voltage up to 1 000 V; – are intended for direct-on-line or star-delta starting; – are rated on the basis of duty type S1; – are constructed to any degree of protection and explosion protection. The main changes with respect to the previous edition are as follows: – new design letter E for extended efficiency motors, explanation of all design letters, and description of new designs NE, NEY, HE, and HEY; – addition of a reference to IEC 60079-7; – addition of a formula to calculate locked rotor current from apparent power.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 29<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | 4 Symbols 5 Designation 5.1 General 5.2 Design N 5.3 Design NE 5.4 Designs NY and NEY 5.5 Design H <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 5.6 Design HE 5.7 Designs HY and HEY 6 Design N requirements 6.1 Torque characteristics 6.2 Locked rotor current and apparent power 6.3 Starting requirements <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 7 Design NE starting requirements 8 Designs NY and NEY starting requirements 9 Design H requirements 9.1 Starting torque 9.2 Locked rotor current and apparent power 9.3 Starting requirements <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | 10 Design HE starting requirements 11 Designs HY and HEY starting requirements Tables Table 1 \u2013 Minimum values of torques for design N <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Table 2 \u2013 Maximum values of locked rotor apparent power for designs N and H Table 3 \u2013 Maximum values of locked rotor apparent power for designs NE and HE <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Table 4 \u2013 External moment of inertia (J) <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Table 5 \u2013 Minimum values of torques for design H Table 6 \u2013 Minimum values of torques for design N motors with type of protection ‘Ex eb \u2013 increased safety’ <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Table 7 \u2013 External moment of inertia (J) for motors with type of protection ‘Ex eb \u2013 increased safety’ <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Rotating electrical machines – Starting performance of single-speed three-phase cage induction motors<\/b><\/p>\n |