 |
| Purchase Information |
| Use this form to request purchase information on IEC online subscriptions. |
|
|
Document IEC 60034-12 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
IEC 60034-12 Document Information:
Title
Rotating electrical machines – Part 12: Starting performance of single-speed three-phase cage induction motors
Machines électriques tournantes – Partie 12: Caractéristiques de démarrage des moteurs triphasés à induction à cage à une seule vitesse
International Electrotechnical Commission
Publication Date:
Sep 1, 2007
Scope:
This International standard specifies 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 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.
The standard also applies to dual voltage motors provided that the flux saturation level is the same for both voltages and to motors having type of protection 'e - increased safety' with temperature classes T1 to T3 complying with IEC 60079-0 and IEC 60079-7
NOTE 1 It is not expected that all manufacturers will produce machines for all four designs. The selection of any specific design in accordance with this standard will be a matter of agreement between the manufacturer and the purchaser.
NOTE 2 Designs other than the four specified may be necessary for particular applications.
NOTE 3 The values of torque and apparent power given in this standard are limiting values (that is, minimum or maximum without tolerance), but it should be noted that values given in manufacturers' catalogues may include tolerances in accordance with IEC 60034-1.
NOTE 4 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 value. The current peak and decay time are a function of the motor design and switching angle.
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
