IEC 60034-1:2022

Rotating electrical machines - Part 1: Rating and performance

IEC 60034-1:2022 is applicable to all rotating electrical machines, except rotating electrical machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines within the scope of this document may also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092. This fourteenth edition cancels and replaces the thirteenth edition published in 2017.

Machines électriques tournantes - Partie 1: Caractéristiques assignées et caractéristiques de fonctionnement

L'IEC 60034-1:2022 s'applique à toutes les machines électriques tournantes à l’exception des machines destinées aux véhicules ferroviaires et routiers, qui sont couvertes par la série de normes IEC 60349. Les machines comprises dans le domaine d’application du présent document peuvent également être soumises à des exigences nouvelles, modifiées ou complémentaires figurant dans d’autres normes, par exemple, les séries IEC 60079 et IEC 60092. Cette quatorzième édition annule et remplace la treizième édition parue en 2017.

Električni rotacijski stroji - 1. del: Nazivni podatki in preskus lastnosti

Standard IEC 60034-1:2022 je na voljo kot IEC 60034-1:2022 RLV, ki vsebuje mednarodni standard in njegovo različico z revizijami, ki prikazujejo vse spremembe tehnične vsebine v primerjavi s prejšnjo izdajo. Standard IEC 60034-1:2022 se uporablja za vse električne rotacijske stroje, razen za električne rotacijske stroje za železniška in cestna vozila, zajeta v seriji standardov IEC 60349. Stroje, ki spadajo na področje uporabe tega dokumenta, lahko nadomeščajo, spreminjajo ali zanje veljajo zahteve drugih standardov, kot sta npr. IEC 60079 in IEC 60092. Štirinajsta izdaja razveljavlja in nadomešča trinajsto izdajo, objavljeno leta 2017.

General Information

• Status: Published
• Publication Date: 13-Feb-2022
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: WG 12 - TC 2/WG 12
• Current Stage: PPUB - Publication issued
• Start Date: 11-Mar-2022
• Completion Date: 14-Feb-2022
• Ref Project: SIST IEC 60034-1:2023 - Rotating electrical machines - Part 1: Rating and performance

Relations

• Revises: IEC 60034-1:2017 - Rotating electrical machines - Part 1: Rating and performance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2023
Električni rotacijski stroji - 1. del: Nazivni podatki in preskus lastnosti
Rotating electrical machines - Part 1: Rating and performance
Machines électriques tournantes - Partie 1: Caractéristiques assignées et
caractéristiques de fonctionnement
Ta slovenski standard je istoveten z: IEC 60034-1:2022
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

IEC 60034-1 ®
Edition 14.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Rotating electrical machines –

Part 1: Rating and performance

Machines électriques tournantes –

Partie 1: Caractéristiques assignées et caractéristiques de fonctionnement

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-1076-8

– 2 – IEC 60034-1:2022 © IEC 2022
CONTENTS
FOREWORD . 7
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Duty . 17
4.1 Declaration of duty . 17
4.2 Duty types . 18
4.2.1 Duty type S1 – Continuous running duty . 18
4.2.2 Duty type S2 – Short-time duty . 19
4.2.3 Duty type S3 – Intermittent periodic duty . 20
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 21
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 22
4.2.6 Duty type S6 – Continuous operation periodic duty . 24
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 25
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 26
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 27
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 28
5 Rating. 31
5.1 Assignment of rating . 31
5.2 Classes of rating . 31
5.2.1 Rating for continuous running duty . 31
5.2.2 Rating for short-time duty . 31
5.2.3 Rating for periodic duty . 31
5.2.4 Rating for non-periodic duty . 31
5.2.5 Rating for duty with discrete constant loads and speeds . 32
5.2.6 Rating for equivalent loading . 32
5.3 Selection of a class of rating . 32
5.4 Allocation of outputs to class of rating . 32
5.5 Rated output . 33
5.5.1 DC generators . 33
5.5.2 AC generators . 33
5.5.3 Motors . 33
5.5.4 Synchronous compensators . 33
5.6 Rated voltage . 33
5.6.1 DC generators . 33
5.6.2 AC generators . 33
5.6.3 AC motors . 33
5.7 Preferred combinations of voltages and outputs . 33
5.8 Machines with more than one rating . 34
6 Site conditions . 34
6.1 General . 34
6.2 Altitude . 34
6.3 Maximum ambient air temperature . 34
6.4 Minimum ambient air temperature . 34
6.5 Water coolant temperature . 35

6.6 Standstill, storage and transport . 35
6.7 Purity of hydrogen coolant . 35
7 Electrical operating conditions . 35
7.1 Electrical supply . 35
7.2 Form and symmetry of voltages and currents . 36
7.2.1 AC motors . 36
7.2.2 AC generators . 37
7.2.3 Synchronous machines . 37
7.2.4 DC motors supplied from static power converters . 38
7.3 Voltage during starting of AC motors . 39
7.4 Voltage and frequency variations during operation . 39
7.5 Three-phase AC machines operating on unearthed systems . 41
7.6 Voltage (peak and gradient) withstand levels . 42
8 Thermal performance and tests . 42
8.1 Thermal class . 42
8.2 Reference coolant . 42
8.3 Conditions for thermal tests . 43
8.3.1 Electrical supply . 43
8.3.2 Temperature of machine before test . 43
8.3.3 Temperature of coolant . 44
8.3.4 Measurement of coolant temperature during test . 44
8.4 Temperature rise of a part of a machine . 44
8.5 Methods of measurement of temperature . 45
8.5.1 General . 45
8.5.2 Resistance method . 45
8.5.3 Embedded temperature detector (ETD) method . 45
8.5.4 Thermometer method. 45
8.6 Determination of winding temperature . 45
8.6.1 Choice of method . 45
8.6.2 Determination by resistance method . 46
8.6.3 Determination by ETD method . 48
8.6.4 Determination by thermometer method . 48
8.7 Duration of thermal tests . 48
8.7.1 Rating for continuous running duty . 48
8.7.2 Rating for short-time duty . 49
8.7.3 Rating for periodic duty . 49
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 49
8.8 Determination of the thermal equivalent time constant for machines of
duty type S9 . 49
8.9 Measurement of bearing temperature . 49
8.10 Limits of temperature and of temperature rise . 50
8.10.1 General . 50
8.10.2 Indirect cooled windings . 50
8.10.3 Direct cooled windings . 54
8.10.4 Adjustments to take account of hydrogen purity on test . 55
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 55
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 55

– 4 – IEC 60034-1:2022 © IEC 2022
9 Other performance and tests . 57
9.1 Routine tests. 57
9.2 Withstand voltage test . 58
9.3 Occasional excess current . 62
9.3.1 General . 62
9.3.2 Generators . 62
9.3.3 Motors (except commutator motors and permanent magnet motors) . 62
9.3.4 Commutator machines . 62
9.4 Momentary excess torque for motors . 62
9.4.1 Polyphase induction motors and DC motors . 62
9.4.2 Polyphase synchronous motors . 63
9.4.3 Other motors . 63
9.5 Pull-up torque and locked-rotor torque for cage induction motors with direct
online starting . 63
9.6 Safe operating speed of cage induction motors . 63
9.7 Overspeed . 64
9.8 Short-circuit current for synchronous machines . 65
9.9 Short-circuit withstand test for synchronous machines . 65
9.10 Commutation test for commutator machines .
...

IEC 60034-1 ®
Edition 14.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Rotating electrical machines –
Part 1: Rating and performance

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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and French, with equivalent terms in 19 additional languages.
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(IEV) online.
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If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60034-1 ®
Edition 14.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Rotating electrical machines –

Part 1: Rating and performance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.160.01 ISBN 978-2-8322-1082-6

– 2 – IEC 60034-1:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 7
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Duty . 18
4.1 Declaration of duty . 18
4.2 Duty types . 18
4.2.1 Duty type S1 – Continuous running duty . 18
4.2.2 Duty type S2 – Short-time duty . 19
4.2.3 Duty type S3 – Intermittent periodic duty . 20
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 21
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 22
4.2.6 Duty type S6 – Continuous operation periodic duty . 24
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 25
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 26
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 27
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 28
5 Rating. 31
5.1 Assignment of rating . 31
5.2 Classes of rating . 31
5.2.1 Rating for continuous running duty . 31
5.2.2 Rating for short-time duty . 31
5.2.3 Rating for periodic duty . 31
5.2.4 Rating for non-periodic duty . 31
5.2.5 Rating for duty with discrete constant loads and speeds . 32
5.2.6 Rating for equivalent loading . 32
5.3 Selection of a class of rating . 32
5.4 Allocation of outputs to class of rating . 32
5.5 Rated output . 33
5.5.1 DC generators . 33
5.5.2 AC generators . 33
5.5.3 Motors . 33
5.5.4 Synchronous condensers compensators . 33
5.6 Rated voltage . 33
5.6.1 DC generators . 33
5.6.2 AC generators . 33
5.6.3 AC motors . 33
5.7 Co-ordination Preferred combination of voltages and outputs . 33
5.8 Machines with more than one rating . 34
6 Site conditions . 34
6.1 General . 34
6.2 Altitude . 34
6.3 Maximum ambient air temperature . 34
6.4 Minimum ambient air temperature . 34
6.5 Water coolant temperature . 35

6.6 Standstill, storage and transport . 35
6.7 Purity of hydrogen coolant . 35
7 Electrical operating conditions . 35
7.1 Electrical supply . 35
7.2 Form and symmetry of voltages and currents . 36
7.2.1 AC motors . 36
7.2.2 AC generators . 37
7.2.3 Synchronous machines . 37
7.2.4 DC motors supplied from static power converters . 38
7.3 Voltage during starting of AC motors . 39
7.4 Voltage and frequency variations during operation . 39
7.5 Three-phase AC machines operating on unearthed systems . 42
7.6 Voltage (peak and gradient) withstand levels . 43
8 Thermal performance and tests . 43
8.1 Thermal class . 43
8.2 Reference coolant . 43
8.3 Conditions for thermal tests . 44
8.3.1 Electrical supply . 44
8.3.2 Temperature of machine before test . 45
8.3.3 Temperature of coolant . 45
8.3.4 Measurement of coolant temperature during test . 45
8.4 Temperature rise of a part of a machine . 45
8.5 Methods of measurement of temperature . 46
8.5.1 General . 46
8.5.2 Resistance method . 46
8.5.3 Embedded temperature detector (ETD) method . 46
8.5.4 Thermometer method. 46
8.6 Determination of winding temperature . 46
8.6.1 Choice of method . 46
8.6.2 Determination by resistance method . 47
8.6.3 Determination by ETD method . 49
8.6.4 Determination by thermometer method . 49
8.7 Duration of thermal tests . 50
8.7.1 Rating for continuous running duty . 50
8.7.2 Rating for short-time duty . 50
8.7.3 Rating for periodic duty . 50
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 50
8.8 Determination of the thermal equivalent time constant for machines of
duty type S9 . 50
8.9 Measurement of bearing temperature . 50
8.10 Limits of temperature and of temperature rise . 51
8.10.1 General . 51
8.10.2 Indirect cooled windings . 51
8.10.3 Direct cooled windings . 55
8.10.4 Adjustments to take account of hydrogen purity on test . 56
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 56
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 56

– 4 – IEC 60034-1:2022 RLV © IEC 2022
9 Other performance and tests . 58
9.1 Routine tests. 58
9.2 Withstand voltage test . 60
9.3 Occasional excess current . 64
9.3.1 General .
...

IEC 60034-1 ®
Edition 14.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Rotating electrical machines –
Part 1: Rating and performance

Machines électriques tournantes –
Partie 1: Caractéristiques assignées et caractéristiques de fonctionnement

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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latest edition, a corrigendum or an amendment might have been published.

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IEC 60034-1 ®
Edition 14.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Rotating electrical machines –

Part 1: Rating and performance

Machines électriques tournantes –

Partie 1: Caractéristiques assignées et caractéristiques de fonctionnement

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-1076-8

– 2 – IEC 60034-1:2022 © IEC 2022
CONTENTS
FOREWORD . 7
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Duty . 17
4.1 Declaration of duty . 17
4.2 Duty types . 18
4.2.1 Duty type S1 – Continuous running duty . 18
4.2.2 Duty type S2 – Short-time duty . 19
4.2.3 Duty type S3 – Intermittent periodic duty . 20
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 21
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 22
4.2.6 Duty type S6 – Continuous operation periodic duty . 24
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 25
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 26
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 27
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 28
5 Rating. 31
5.1 Assignment of rating . 31
5.2 Classes of rating . 31
5.2.1 Rating for continuous running duty . 31
5.2.2 Rating for short-time duty . 31
5.2.3 Rating for periodic duty . 31
5.2.4 Rating for non-periodic duty . 31
5.2.5 Rating for duty with discrete constant loads and speeds . 32
5.2.6 Rating for equivalent loading . 32
5.3 Selection of a class of rating . 32
5.4 Allocation of outputs to class of rating . 32
5.5 Rated output . 33
5.5.1 DC generators . 33
5.5.2 AC generators . 33
5.5.3 Motors . 33
5.5.4 Synchronous compensators . 33
5.6 Rated voltage . 33
5.6.1 DC generators . 33
5.6.2 AC generators . 33
5.6.3 AC motors . 33
5.7 Preferred combinations of voltages and outputs . 33
5.8 Machines with more than one rating . 34
6 Site conditions . 34
6.1 General . 34
6.2 Altitude . 34
6.3 Maximum ambient air temperature . 34
6.4 Minimum ambient air temperature . 34
6.5 Water coolant temperature . 35

6.6 Standstill, storage and transport . 35
6.7 Purity of hydrogen coolant . 35
7 Electrical operating conditions . 35
7.1 Electrical supply . 35
7.2 Form and symmetry of voltages and currents . 36
7.2.1 AC motors . 36
7.2.2 AC generators . 37
7.2.3 Synchronous machines . 37
7.2.4 DC motors supplied from static power converters . 38
7.3 Voltage during starting of AC motors . 39
7.4 Voltage and frequency variations during operation . 39
7.5 Three-phase AC machines operating on unearthed systems . 41
7.6 Voltage (peak and gradient) withstand levels . 42
8 Thermal performance and tests . 42
8.1 Thermal class . 42
8.2 Reference coolant . 42
8.3 Conditions for thermal tests . 43
8.3.1 Electrical supply . 43
8.3.2 Temperature of machine before test . 43
8.3.3 Temperature of coolant . 44
8.3.4 Measurement of coolant temperature during test . 44
8.4 Temperature rise of a part of a machine . 44
8.5 Methods of measurement of temperature . 45
8.5.1 General . 45
8.5.2 Resistance method . 45
8.5.3 Embedded temperature detector (ETD) method . 45
8.5.4 Thermometer method. 45
8.6 Determination of winding temperature . 45
8.6.1 Choice of method . 45
8.6.2 Determination by resistance method . 46
8.6.3 Det
...