IEC 60034-1:2017

Rotating electrical machines - Part 1: Rating and performance

IEC 60034-1:2017 is applicable to all rotating electrical machines except those covered by other IEC standards, for example, IEC 60349. 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 new edition contains a number of clarifications, corrections and enhancements with regard to the previous edition.

Drehende elektrische Maschinen - Teil 1: Bemessung und Betriebsverhalten

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

L'IEC 60034-1:2017 est applicable à toutes les machines électriques tournantes, excepté celles qui sont couvertes par d’autres normes IEC, par exemple l’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 nouvelle édition contient de multiples calrifications, corrections et améliorations par rapport à l'édition précédente.

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

Ta del standarda IEC 60034 se uporablja za vse električne rotacijske stroje razen tistih, ki so zajeti v drugih standardih IEC, na primer 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.
OPOMBA: Če so določene točke tega dokumenta spremenjene, da ustrezajo posebnim zahtevam, npr. za stroje, ki so izpostavljeni radioaktivnemu sevanju ali stroje za aeronavtiko, veljajo vse druge točke, v kolikor so združljive.

General Information

• Status: Published
• Publication Date: 08-May-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: WG 12 - TC 2/WG 12
• Current Stage: DELPUB - Deleted Publication
• Start Date: 26-Jun-2020
• Completion Date: 14-Feb-2022
• Ref Project: SIST IEC 60034-1:2019 - Rotating electrical machines - Part 1: Rating and performance

Relations

• Revises: IEC 60034-1:2010 - Rotating electrical machines - Part 1: Rating and performance
• Effective Date: 05-Sep-2023
• Revised: IEC 60034-1:2022 - Rotating electrical machines - Part 1: Rating and performance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2019
(OHNWULþQLURWDFLMVNLVWURMLGHO1D]LYQLSRGDWNLLQSUHVNXVODVWQRVWL
Rotating electrical machines - Part 1: Rating and performance
Drehende elektrische Maschinen - Teil 1: Bemessung und Betriebsverhalten
Machines électriques tournantes - Partie 1: Caractéristiques assignées et
caractéristiques de fonctionnement
Ta slovenski standard je istoveten z: IEC 60034-1 Ed. 13.0
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 13.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 978-2-8322-4210-0

– 2 – IEC 60034-1:2017  IEC 2017
CONTENTS
FOREWORD . 6
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Duty . 15
4.1 Declaration of duty . 15
4.2 Duty types . 16
4.2.1 Duty type S1 – Continuous running duty . 16
4.2.2 Duty type S2 – Short-time duty . 17
4.2.3 Duty type S3 – Intermittent periodic duty . 17
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 18
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 20
4.2.6 Duty type S6 – Continuous operation periodic duty . 21
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 22
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 22
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 24
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 24
5 Rating. 26
5.1 Assignment of rating . 26
5.2 Classes of rating . 26
5.2.1 Rating for continuous running duty . 26
5.2.2 Rating for short-time duty . 26
5.2.3 Rating for periodic duty . 26
5.2.4 Rating for non-periodic duty . 27
5.2.5 Rating for duty with discrete constant loads and speeds . 27
5.2.6 Rating for equivalent loading . 27
5.3 Selection of a class of rating . 27
5.4 Allocation of outputs to class of rating . 28
5.5 Rated output . 28
5.5.1 DC generators . 28
5.5.2 AC generators . 28
5.5.3 Motors . 28
5.5.4 Synchronous condensers . 28
5.6 Rated voltage . 28
5.6.1 DC generators . 28
5.6.2 AC generators . 29
5.7 Co-ordination of voltages and outputs . 29
5.8 Machines with more than one rating . 29
6 Site conditions . 29
6.1 General . 29
6.2 Altitude . 29
6.3 Maximum ambient air temperature . 29
6.4 Minimum ambient air temperature . 30
6.5 Water coolant temperature . 30
6.6 Standstill, storage and transport . 30

6.7 Purity of hydrogen coolant . 30
7 Electrical operating conditions . 30
7.1 Electrical supply . 30
7.2 Form and symmetry of voltages and currents . 31
7.2.1 AC motors . 31
7.2.2 AC generators . 32
7.2.3 Synchronous machines . 32
7.2.4 DC motors supplied from static power converters . 33
7.3 Voltage and frequency variations during operation . 34
7.4 Three-phase a.c. machines operating on unearthed systems . 36
7.5 Voltage (peak and gradient) withstand levels . 36
8 Thermal performance and tests . 37
8.1 Thermal class . 37
8.2 Reference coolant . 37
8.3 Conditions for thermal tests . 38
8.3.1 Electrical supply . 38
8.3.2 Temperature of machine before test . 38
8.3.3 Temperature of coolant . 38
8.3.4 Measurement of coolant temperature during test . 38
8.4 Temperature rise of a part of a machine . 39
8.5 Methods of measurement of temperature . 39
8.5.1 General . 39
8.5.2 Resistance method . 39
8.5.3 Embedded temperature detector (ETD) method . 39
8.5.4 Thermometer method. 39
8.6 Determination of winding temperature . 39
8.6.1 Choice of method . 39
8.6.2 Determination by resistance method . 40
8.6.3 Determination by ETD method . 42
8.6.4 Determination by thermometer method . 42
8.7 Duration of thermal tests . 43
8.7.1 Rating for continuous running duty . 43
8.7.2 Rating for short-time duty . 43
8.7.3 Rating for periodic duty . 43
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 43
8.8 Determination of the thermal equivalent time constant for machines of duty
type S9 . 43
8.9 Measurement of bearing temperature . 43
8.10 Limits of temperature and of temperature rise . 44
8.10.1 General . 44
8.10.2 Indirect cooled windings . 44
8.10.3 Direct cooled windings . 49
8.10.4 Adjustments to take account of hydrogen purity on test . 50
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 50
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 50
9 Other performance and tests . 52

– 4 – IEC 60034-1:2017  IEC 2017
9.1 Routine tests. 52
9.2 Withstand voltage test . 53
9.3 Occasional excess current . 55
9.3.1 General . 55
9.3.2 Generators . 56
9.3.3 Motors (except commutator motors and permanent magnet motors) . 56
9.3.4 Commutator machines . 56
9.4 Momentary excess torque for motors . 56
9.4.1 Polyphase induction motors and d.c. motors . 56
9.4.2 Polyphase synchronous motors . 57
9.4.3 Other motors . 57
9.5 Pull-up torque . 57
9.6 Safe operating speed of cage induction motors . 57
9.7 Overspeed . 58
9.8 Short-circuit current for synchronous machines . 59
9.9 Short-circuit withstand test for synchronous machines . 59
9.10 Commutation test for commutator machines . 60
9.11 Total harmonic distortion (THD) for synchronous machines . 60
9.11.1 General .
...

IEC 60034-1 ®
Edition 13.0 2017-05
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.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
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.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
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variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
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and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 60034-1 ®
Edition 13.0 2017-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Rotating electrical machines –

Part 1: Rating and performance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.160.01 ISBN 978-2-8322-4323-7

– 2 – IEC 60034-1:2017 RLV  IEC 2017

CONTENTS
FOREWORD . 7

1 Scope . 10

2 Normative references . 10

3 Terms and definitions . 12

4 Duty . 16

4.1 Declaration of duty . 16

4.2 Duty types . 17
4.2.1 Duty type S1 – Continuous running duty . 17
4.2.2 Duty type S2 – Short-time duty . 18
4.2.3 Duty type S3 – Intermittent periodic duty . 19
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 20
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 21
4.2.6 Duty type S6 – Continuous operation periodic duty . 22
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 23
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 24
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 25
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 26
5 Rating. 29
5.1 Assignment of rating . 29
5.2 Classes of rating . 29
5.2.1 Rating for continuous running duty . 29
5.2.2 Rating for short-time duty . 29
5.2.3 Rating for periodic duty . 29
5.2.4 Rating for non-periodic duty . 29
5.2.5 Rating for duty with discrete constant loads and speeds . 30
5.2.6 Rating for equivalent loading . 30
5.3 Selection of a class of rating . 30
5.4 Allocation of outputs to class of rating . 30
5.5 Rated output . 31
5.5.1 DC generators . 31
5.5.2 AC generators . 31

5.5.3 Motors . 31
5.5.4 Synchronous condensers . 31
5.6 Rated voltage . 31
5.6.1 DC generators . 31
5.6.2 AC generators . 31
5.7 Co-ordination of voltages and outputs . 31
5.8 Machines with more than one rating . 32
6 Site operating conditions . 32
6.1 General . 32
6.2 Altitude . 32
6.3 Maximum ambient air temperature . 32
6.4 Minimum ambient air temperature . 32
6.5 Water coolant temperature . 33
6.6 Standstill, storage and transport . 33

6.7 Purity of hydrogen coolant . 33

7 Electrical operating conditions . 33

7.1 Electrical supply . 33

7.2 Form and symmetry of voltages and currents . 34

7.2.1 AC motors . 34

7.2.2 AC generators . 34

7.2.3 Synchronous machines . 35

7.2.4 DC motors supplied from static power converters . 36

7.3 Voltage and frequency variations during operation . 37

7.4 Three-phase a.c. machines operating on unearthed systems . 39
7.5 Voltage (peak and gradient) withstand levels . 40
8 Thermal performance and tests . 40
8.1 Thermal class . 40
8.2 Reference coolant . 40
8.3 Conditions for thermal tests . 41
8.3.1 Electrical supply . 41
8.3.2 Temperature of machine before test . 41
8.3.3 Temperature of coolant . 42
8.3.4 Measurement of coolant temperature during test . 42
8.4 Temperature rise of a part of a machine . 42
8.5 Methods of measurement of temperature . 42
8.5.1 General . 42
8.5.2 Resistance method . 43
8.5.3 Embedded temperature detector (ETD) method . 43
8.5.4 Thermometer method. 43
8.6 Determination of winding temperature . 43
8.6.1 Choice of method . 43
8.6.2 Determination by resistance method . 44
8.6.3 Determination by ETD method . 45
8.6.4 Determination by thermometer method . 46
8.7 Duration of thermal tests . 46
8.7.1 Rating for continuous running duty . 46
8.7.2 Rating for short-time duty . 46
8.7.3 Rating for periodic duty . 46
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 47

8.8 Determination of the thermal equivalent time constant for machines of duty
type S9 . 47
8.9 Measurement of bearing temperature . 47
8.10 Limits of temperature and of temperature rise . 47
8.10.1 General . 47
8.10.2 Indirect cooled windings . 48
8.10.3 Direct cooled windings . 52
8.10.4 Adjustments to take account of hydrogen purity on test . 53
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 53
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 53
9 Other performance and tests . 55

– 4 – IEC 60034-1:2017 RLV  IEC 2017

9.1 Routine tests. 55

9.2 Withstand voltage test .
...

IEC 60034-1 ®
Edition 13.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
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IEC 60034-1 ®
Edition 13.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 978-2-8322-4210-0

– 2 – IEC 60034-1:2017  IEC 2017
CONTENTS
FOREWORD . 6
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Duty . 15
4.1 Declaration of duty . 15
4.2 Duty types . 16
4.2.1 Duty type S1 – Continuous running duty . 16
4.2.2 Duty type S2 – Short-time duty . 17
4.2.3 Duty type S3 – Intermittent periodic duty . 17
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 18
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 20
4.2.6 Duty type S6 – Continuous operation periodic duty . 21
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 22
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 22
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 24
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 24
5 Rating. 26
5.1 Assignment of rating . 26
5.2 Classes of rating . 26
5.2.1 Rating for continuous running duty . 26
5.2.2 Rating for short-time duty . 26
5.2.3 Rating for periodic duty . 26
5.2.4 Rating for non-periodic duty . 27
5.2.5 Rating for duty with discrete constant loads and speeds . 27
5.2.6 Rating for equivalent loading . 27
5.3 Selection of a class of rating . 27
5.4 Allocation of outputs to class of rating . 28
5.5 Rated output . 28
5.5.1 DC generators . 28
5.5.2 AC generators . 28
5.5.3 Motors . 28
5.5.4 Synchronous condensers . 28
5.6 Rated voltage . 28
5.6.1 DC generators . 28
5.6.2 AC generators . 29
5.7 Co-ordination of voltages and outputs . 29
5.8 Machines with more than one rating . 29
6 Site conditions . 29
6.1 General . 29
6.2 Altitude . 29
6.3 Maximum ambient air temperature . 29
6.4 Minimum ambient air temperature . 30
6.5 Water coolant temperature . 30
6.6 Standstill, storage and transport . 30

6.7 Purity of hydrogen coolant . 30
7 Electrical operating conditions . 30
7.1 Electrical supply . 30
7.2 Form and symmetry of voltages and currents . 31
7.2.1 AC motors . 31
7.2.2 AC generators . 32
7.2.3 Synchronous machines . 32
7.2.4 DC motors supplied from static power converters . 33
7.3 Voltage and frequency variations during operation . 34
7.4 Three-phase a.c. machines operating on unearthed systems . 36
7.5 Voltage (peak and gradient) withstand levels . 36
8 Thermal performance and tests . 37
8.1 Thermal class . 37
8.2 Reference coolant . 37
8.3 Conditions for thermal tests . 38
8.3.1 Electrical supply . 38
8.3.2 Temperature of machine before test . 38
8.3.3 Temperature of coolant . 38
8.3.4 Measurement of coolant temperature during test . 38
8.4 Temperature rise of a part of a machine . 39
8.5 Methods of measurement of temperature . 39
8.5.1 General . 39
8.5.2 Resistance method . 39
8.5.3 Embedded temperature detector (ETD) method . 39
8.5.4 Thermometer method.
...