BS EN 60034-12:2017
$102.76
Rotating electrical machines – Starting performance of single-speed three-phase cage induction motors
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 20 |
This part of IEC 60034 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:
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have a rated voltage up to 1 000 V;
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are intended for direct-on-line or star-delta starting;
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are rated on the basis of duty type S1;
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are constructed to any degree of protection and explosion protection.
This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages.
The values of torque, apparent power and current given in this document are limiting values (that is, minimum or maximum without tolerance).
It is not expected that all manufacturers will produce machines for all eight designs. The selection of any specific design in accordance with this document will be a matter of agreement between the manufacturer and the purchaser.
Designs other than the eight specified may be necessary for particular applications.
It should be noted that values given in manufacturers’ catalogues may include tolerances in accordance with IEC 60034‑1 .
The values tabled for locked rotor apparent power are based on r.m.s. symmetrical steady state locked rotor currents; at motor switch on there will be a one-half cycle asymmetrical instantaneous peak current which may range from 1,8 to 2,8 times the steady state locked rotor value. The current peak and decay time are a function of the motor design and switching angle.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 7 | English CONTENTS |
| 8 | FOREWORD |
| 10 | 1 Scope 2 Normative references 3 Terms and definitions |
| 12 | 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 |
| 13 | 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 |
| 14 | 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 |
| 15 | 10 Design HE starting requirements 11 Designs HY and HEY starting requirements Tables Table 1 – Minimum values of torques for design N |
| 16 | Table 2 – Maximum values of locked rotor apparent power for designs N and H Table 3 – Maximum values of locked rotor apparent power for designs NE and HE |
| 17 | Table 4 – External moment of inertia (J) |
| 18 | Table 5 – Minimum values of torques for design H Table 6 – Minimum values of torques for design N motors with type of protection ‘Ex eb – increased safety’ |
| 19 | Table 7 – External moment of inertia (J) for motors with type of protection ‘Ex eb – increased safety’ |
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BS EN 60034-12:2017 – TC:2020 Edition
Tracked Changes. Rotating electrical machines – Starting performance of single-speed three-phase cage induction motors Published…
