IEC 60034-12:2024
Collections
International IEC standards
Publication date
May 2024
Number of pages
50 p.
Reference
IEC 60034-12:2024
IEC 60034-12:2024
May 2024
International standard
Current
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
IEC 60034-12:2024 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 as defined in IEC 60034-5 and explosion protection.This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27- new clause on methods for measuring locked-rotor current and torque;- new informative annex on the general current and torque characteristics with locked rotor;- new informative annex on correction of voltage and frequency;- aligned with the requirements for explosion protected motors from TC31 WG27.
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Sumary
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
IEC 60034-12:2024 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 as defined in IEC 60034-5 and explosion protection.
This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27
- new clause on methods for measuring locked-rotor current and torque;
- new informative annex on the general current and torque characteristics with locked rotor;
- new informative annex on correction of voltage and frequency;
- aligned with the requirements for explosion protected motors from TC31 WG27.
IEC 60034-12:2024 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 as defined in IEC 60034-5 and explosion protection.
This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27
- new clause on methods for measuring locked-rotor current and torque;
- new informative annex on the general current and torque characteristics with locked rotor;
- new informative annex on correction of voltage and frequency;
- aligned with the requirements for explosion protected motors from TC31 WG27.
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Replaced standards
(1)
IEC 60034-12:2016
November 2016
International standard
Cancelled
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
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.
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The Requirements department helps you quickly locate within the normative text:
- mandatory clauses to satisfy,
- non-essential but useful clauses to know, such as permissions and recommendations.
The identification of these types of clauses is based on the document “ISO / IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents ”as well as on a constantly enriched list of verbal forms.
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