SN EN 60034-12 : 1995 AMD 11 1999

1 Scope<br>2 Normative references<br>3 Definitions<br>4 Symbols<br>5 Designation<br>&nbsp;&nbsp;5.1 General<br>&nbsp;&nbsp;5.2 Design N<br>&nbsp;&nbsp;5.3 Design NY<br>&nbsp;&nbsp;5.4 Design H<br>&nbsp;&nbsp;5.5 Design HY<br>6 Design N requirements<br>&nbsp;&nbsp;6.1 Torque characteristics<br>&nbsp;&nbsp;6.2 Locked rotor apparent power<br>&nbsp;&nbsp;6.3 Starting requirements<br>7 Design NY starting requirements<br>8 Design H requirements<br>&nbsp;&nbsp;8.1 Starting torque<br>&nbsp;&nbsp;8.2 Locked rotor apparent power<br>&nbsp;&nbsp;8.3 Starting requirements<br>9 Design HY requirements starting requirements<br>Table 1 - Minimum value of torques for design N<br>Table 2 - Maximum value of locked rotor apparent power for design<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N and H<br>Table 3 - External inertia (J)<br>Table 4 - Minimum values of torques for design H <br>Table 5 - Minimum value of torques for design N-e starting<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;performance for motors with type of protection 'e'<br>Table 6 - Maximum value of locked rotor apparent power for motors<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with type of protection 'e'<br>Table 7 - External inertia (J) for motors with type of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;protection 'e'<br>Annex ZA (normative) Normative references to international<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;publications with their corresponding European<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;publications

Defines the parameters for four 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 1000 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.