Rotating electrical machines - Part 1: Rating and performance

IEC 60034-1:2026 is available as IEC 60034-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-1:2026 is applicable to all rotating electric machines, except rotating electric machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines with integrated EMC-active components such as a variable frequency converter are considered being a power drive system (see the IEC 61800 series of standards). In such cases, this document applies to the motor component of the power drive system only. Machines within the scope of this document can also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092.
NOTE If particular clauses of this document are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible. This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
Clause 1: Clarification with respect to machines with integrated EMC-active components added
Clause 2: Normative references updated
Clause 3: Note on meaning of “agreement” deleted; list of abbreviations added
Clause 4.2.9, 4.2.10: References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36
Clause 5.1: Reference to IEC TS 60034-25 converted into note
Clause 6.6 Clarification of requirements
Clause 7.2.1: Reference to IEC TS 60034-25 converted into note
Clause 7.5: Clarification of requirements
Clause 7.6: Reference to IEC TS 60034-25 converted into note
Clause 8.1: Clarification of references
Clause 8.6.1: Clarification on choice of method for large machines
Table 11: Updated values for thermal class 200 (N)
Clause 8.10.3: Clarification of requirements
Clause 9.2: Clarification on test voltage for old machines after rewinding
Table 17: Items 9 and 10 merged and clarified
Clause 9.7: Clarification on overspeed test for machines held at stock added
Table 20: Clarification on test speed for converter duty machines
Clause 10.2: Clarification of term ‘digital form’
Clause :10.3 Note on QR code deleted
Clause 11.1: Reference to protective earth test added
Clause 13.1: Clarifying flowchart added
Clause 13.2.2: Clarification on motors with integrated VSD added
Clause 13.3: Clarification of requirements after consultation with ACEC
Clause 13.5: Clarification of requirements after consultation with ACEC
Clause 14: Note on safety converted to normal text

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

IEC 60034-1:2026 est disponible sous forme de IEC 60034-1:2026 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60034-1:2026 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 avec composants CEM actifs intégrés comme un convertisseur à fréquence variable sont considérées comme un entraînement électrique de puissance (voir la série de normes IEC 61800). Dans ce cas, le présent document s'applique uniquement au composant moteur de l'entraînement électrique de puissance. 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 l'IEC 60079 et l'IEC 60092.
NOTE Si certains articles du présent document sont modifiés afin de permettre des applications spéciales, par exemple pour les machines soumises à la radioactivité ou les machines aérospatiales, tous les autres articles s'appliquent dans la mesure où ils sont compatibles.
Cette quinzième édition annule et remplace la quatorzième édition parue en 2022. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
Paragraphe 1: Clarification ajoutée en ce qui concerne les machines avec composants CEM actifs intégrés
Paragraphe 2: Références normatives mises à jour
Paragraphe 3: Note sur la signification du terme "accord" supprimée, liste des abréviations ajoutée
Paragraphe 4.2.9, 4.1.10: Références à l'IEC TS 60034-25 supprimées, le terme "machine fonctionnant exclusivement sur convertisseur" étant désormais défini en 3.36
Paragraphe 5.1: Référence à l'IEC TS 60034-25 convertie en note
Paragraphe 6.6: Clarification des exigences
Paragraphe 7.2.1: Référence à l'IEC TS 60034-25 convertie en note
Paragraphe 7.5: Clarification des exigences
Paragraphe 7.6: Référence à l'IEC TS 60034-25 convertie en note
Paragraphe 8.1: Clarification des références
Paragraphe 8.6.1: Clarification du choix de la méthode pour les machines de grande taille
Tableau 11: Valeurs mises à jour pour la classe thermique 200 (N)
Paragraphe 8.10.3: Clarification des exigences
Paragraphe 9.2: Clarification de la tension d'essai des anciennes machines après rebobinage
Tableau 17: Points 9 et 10 fusionnés et clarifiés
Paragraphe 9.7: Clarification ajoutée en ce qui concerne l'essai de survitesse des machines stockées
Tableau 20: Clarification de la vitesse d'essai pour les machines fonctionnant exclusivement sur convertisseur
Paragraphe 10.2: Clarification du terme "forme numérique"
Paragraphe 10.3: Note sur le QR code supprimée
Paragraphe 11.!: Référence à l'essai de mise à la terre de protection ajoutée
Paragraphe 13.1: Ajout d'un organigramme explicatif
Paragraphe 13.2.2: Clarification ajoutée en ce qui concerne les moteurs avec variateur de vitesse intégré
Paragraphe 13.3: Clarification des exigences après consultation de l'ACEC
Paragraphe 13.5:Clarification des exigences après consultation de l'ACEC
Paragraphe 14: Note sur la sécurité convertie en texte normal

General Information

Status
Published
Publication Date
12-Mar-2026
Technical Committee
TC 2 - Rotating machinery
Drafting Committee
WG 12 - TC 2/WG 12
Current Stage
PPUB - Publication issued
Start Date
13-Mar-2026
Completion Date
03-Apr-2026

Relations

Effective Date
17-Nov-2023

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Frequently Asked Questions

IEC 60034-1:2026 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Rotating electrical machines - Part 1: Rating and performance". This standard covers: IEC 60034-1:2026 is available as IEC 60034-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-1:2026 is applicable to all rotating electric machines, except rotating electric machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines with integrated EMC-active components such as a variable frequency converter are considered being a power drive system (see the IEC 61800 series of standards). In such cases, this document applies to the motor component of the power drive system only. Machines within the scope of this document can also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092. NOTE If particular clauses of this document are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible. This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Clause 1: Clarification with respect to machines with integrated EMC-active components added Clause 2: Normative references updated Clause 3: Note on meaning of “agreement” deleted; list of abbreviations added Clause 4.2.9, 4.2.10: References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36 Clause 5.1: Reference to IEC TS 60034-25 converted into note Clause 6.6 Clarification of requirements Clause 7.2.1: Reference to IEC TS 60034-25 converted into note Clause 7.5: Clarification of requirements Clause 7.6: Reference to IEC TS 60034-25 converted into note Clause 8.1: Clarification of references Clause 8.6.1: Clarification on choice of method for large machines Table 11: Updated values for thermal class 200 (N) Clause 8.10.3: Clarification of requirements Clause 9.2: Clarification on test voltage for old machines after rewinding Table 17: Items 9 and 10 merged and clarified Clause 9.7: Clarification on overspeed test for machines held at stock added Table 20: Clarification on test speed for converter duty machines Clause 10.2: Clarification of term ‘digital form’ Clause :10.3 Note on QR code deleted Clause 11.1: Reference to protective earth test added Clause 13.1: Clarifying flowchart added Clause 13.2.2: Clarification on motors with integrated VSD added Clause 13.3: Clarification of requirements after consultation with ACEC Clause 13.5: Clarification of requirements after consultation with ACEC Clause 14: Note on safety converted to normal text

IEC 60034-1:2026 is available as IEC 60034-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-1:2026 is applicable to all rotating electric machines, except rotating electric machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines with integrated EMC-active components such as a variable frequency converter are considered being a power drive system (see the IEC 61800 series of standards). In such cases, this document applies to the motor component of the power drive system only. Machines within the scope of this document can also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092. NOTE If particular clauses of this document are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible. This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Clause 1: Clarification with respect to machines with integrated EMC-active components added Clause 2: Normative references updated Clause 3: Note on meaning of “agreement” deleted; list of abbreviations added Clause 4.2.9, 4.2.10: References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36 Clause 5.1: Reference to IEC TS 60034-25 converted into note Clause 6.6 Clarification of requirements Clause 7.2.1: Reference to IEC TS 60034-25 converted into note Clause 7.5: Clarification of requirements Clause 7.6: Reference to IEC TS 60034-25 converted into note Clause 8.1: Clarification of references Clause 8.6.1: Clarification on choice of method for large machines Table 11: Updated values for thermal class 200 (N) Clause 8.10.3: Clarification of requirements Clause 9.2: Clarification on test voltage for old machines after rewinding Table 17: Items 9 and 10 merged and clarified Clause 9.7: Clarification on overspeed test for machines held at stock added Table 20: Clarification on test speed for converter duty machines Clause 10.2: Clarification of term ‘digital form’ Clause :10.3 Note on QR code deleted Clause 11.1: Reference to protective earth test added Clause 13.1: Clarifying flowchart added Clause 13.2.2: Clarification on motors with integrated VSD added Clause 13.3: Clarification of requirements after consultation with ACEC Clause 13.5: Clarification of requirements after consultation with ACEC Clause 14: Note on safety converted to normal text

IEC 60034-1:2026 is classified under the following ICS (International Classification for Standards) categories: 29.160.01 - Rotating machinery in general. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 60034-1:2026 has the following relationships with other standards: It is inter standard links to IEC 60034-1:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

IEC 60034-1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


IEC 60034-1 ®
Edition 15.0 2026-03
INTERNATIONAL
STANDARD
REDLINE VERSION
Rotating electrical machines -
Part 1: Rating and performance
ICS 29.160.01 ISBN 978-2-8327-1151-4
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CONTENTS
FOREWORD . 6
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 11
3.1 Terms and definitions. 11
3.2 Abbreviated terms . 17
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 . 27
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 28
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 29
5 Rating . 32
5.1 Assignment of rating . 32
5.2 Classes of rating . 32
5.2.1 Rating for continuous running duty . 32
5.2.2 Rating for short-time duty . 32
5.2.3 Rating for periodic duty . 32
5.2.4 Rating for non-periodic duty . 32
5.2.5 Rating for duty with discrete constant loads and speeds . 33
5.2.6 Rating for equivalent loading . 33
5.3 Selection of a class of rating . 33
5.4 Allocation of outputs to class of rating . 34
5.5 Rated output . 34
5.5.1 DC generators . 34
5.5.2 AC generators . 34
5.5.3 Motors . 34
5.5.4 Synchronous compensators . 34
5.6 Rated voltage . 34
5.6.1 DC generators . 34
5.6.2 AC generators . 34
5.6.3 AC motors . 34
5.7 Preferred combinations of voltages and outputs . 35
5.8 Machines with more than one rating . 35
6 Site conditions . 35
6.1 General . 35
6.2 Altitude . 35
6.3 Maximum ambient air temperature . 35
6.4 Minimum ambient air temperature . 36
6.5 Water coolant temperature . 36
6.6 Standstill, storage and transport . 36
6.7 Purity of hydrogen coolant . 36
7 Electrical operating conditions . 36
7.1 Electric supply . 36
7.2 Form and symmetry of voltages and currents . 37
7.2.1 AC motors . 37
7.2.2 AC generators . 38
7.2.3 Synchronous machines . 39
7.2.4 DC motors supplied from static power converters . 40
7.3 Voltage during starting of AC motors . 41
7.4 Voltage and frequency variations during operation . 41
7.5 Three-phase AC machines operating on unearthed systems . 44
7.6 Voltage (peak and gradient) withstand levels . 44
7.7 Sudden short circuits . 45
8 Thermal performance and tests . 45
8.1 Thermal class . 45
8.2 Reference coolant . 45
8.3 Conditions for thermal tests . 46
8.3.1 Electric supply . 46
8.3.2 Temperature of machine before test . 46
8.3.3 Temperature of coolant . 46
8.3.4 Measurement of coolant temperature during test . 46
8.4 Temperature rise of a part of a machine . 47
8.5 Methods of measurement of temperature . 47
8.5.1 General . 47
8.5.2 Resistance method . 47
8.5.3 Embedded temperature detector (ETD) method . 47
8.5.4 Thermometer method . 48
8.6 Determination of winding temperature . 48
8.6.1 Choice of method . 48
8.6.2 Determination by resistance method . 49
8.6.3 Determination by ETD method . 50
8.6.4 Determination by thermometer method . 51
8.7 Duration of thermal tests . 51
8.7.1 Rating for continuous running duty . 51
8.7.2 Rating for short-time duty . 51
8.7.3 Rating for periodic duty . 51
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 51
8.8 Determination of the thermal equivalent time constant for machines of
duty type S9. 52
8.9 Measurement of bearing temperature . 52
8.10 Limits of temperature and of temperature rise . 52
8.10.1 General . 52
8.10.2 Indirect cooled windings . 53
8.10.3 Direct cooled windings . 57
8.10.4 Adjustments to take account of hydrogen purity on test . 58
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 58
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 58
9 Other performance and tests . 60
9.1 Routine tests . 60
9.2 Withstand voltage test. 61
9.3 Occasional excess current . 65
9.3.1 General . 65
9.3.2 Generators . 65
9.3.3 Motors (except commutator motors and permanent magnet motors) . 65
9.3.4 Commutator machines . 65
9.4 Momentary excess torque for motors . 65
9.4.1 Polyphase induction motors and DC motors . 65
9.4.2 Polyphase synchronous motors . 66
9.4.3 Other motors . 66
9.5 Pull-up torque and locked-rotor torque for cage induction motors with direct
online starting . 66
9.6 Safe operating speed of cage induction motors . 66
9.7 Overspeed . 67
9.8 Short-circuit current for synchronous machines . 68
9.9 Short-circuit withstand test for synchronous machines . 68
9.10 Commutation test for commutator machines . 69
9.11 Total harmonic distortion (THD) for synchronous machines . 69
9.11.1 General . 69
9.11.2 Limits . 69
9.11.3 Tests . 69
9.12 Protective earth test . 70
9.13 Measurement of insulation resistance and polarization index of winding
insulation . 70
9.14 Shaft-voltage test . 71
10 Information requirements . 71
10.1 General . 71
10.2 Product documentation . 71
10.3 Rating plate . 71
10.4 Information content . 72
10.4.1 General . 72
10.4.2 Minimum information requirements . 72
10.4.3 AC machines . 73
10.4.4 All DC machines . 73
10.4.5 Machines over 5 kW (or 5 kVA) rated output . 73
10.4.6 Optional information . 73
11 Miscellaneous requirements . 74
11.1 Protective earthing of machines . 74
11.2 Shaft-end key(s) . 75
12 Tolerances . 76
12.1 General . 76
12.2 Tolerances on values of quantities . 76
13 Electromagnetic compatibility (EMC) . 77
13.1 General . 77
13.2 Immunity . 79
13.2.1 Machines not incorporating electronic circuits . 79
13.2.2 Machines incorporating electronic circuits . 80
13.3 Emission . 80
13.4 Immunity tests . 80
13.5 Emission measurements . 80
14 Application requirements . 81
Annex A (informative) Guidance for the application of duty type S10 and for
establishing the value of relative thermal life expectancy . 82
Annex B (informative) Electromagnetic compatibility (EMC) limits . 83
Bibliography . 84

Figure 1 – Continuous running duty – Duty type S1. 18
Figure 2 – Short-time duty – Duty type S2 . 19
Figure 3 – Intermittent periodic duty – Duty type S3 . 20
Figure 4 – Intermittent periodic duty with starting – Duty type S4 . 22
Figure 5 – Intermittent periodic duty with electric braking – Duty type S5 . 23
Figure 6 – Continuous operation periodic duty – Duty type S6 . 25
Figure 7 – Continuous operation periodic duty with electric braking – Duty type S7 . 26
Figure 8 – Continuous operation periodic duty with related load/speed changes – Duty
type S8 . 28
Figure 9 – Duty with non-periodic load and speed variations – Duty type S9 . 29
Figure 10 – Duty with discrete constant loads – Duty type S10 . 31
Figure 11 – Voltage and frequency limits for motors and for generators except
generators or synchronous compensators within the scope of IEC 60034-3 and
hydrogenerators within the scope of IEC 60034-33 . 43
Figure 12 – Worst case increase in temperature rise (∆θ) and recommended reduction
of output power (∆P) of motors as a function of the combined change of voltage and
frequency |∆∅| (indicative guideline to users of motors and generators only) . 44
Figure 13 – Factor K as a function of rated power in kW for determining R . 70
PE,M
Figure 14 – Flowchart clarifying the EMC requirements . 79

Table 1 – Preferred voltage ratings . 35
Table 2 – Unbalanced operating conditions for synchronous machines . 40
Table 3 – CCC symbol designation . 41
Table 4 – Primary functions of machines . 43
Table 5 – Reference coolant (see also Table 11) . 45
Table 6 – Time interval . 50
Table 7 – Measuring points . 52
Table 8 – Limits of temperature rise of windings indirectly cooled by air . 54
Table 9 – Limits of temperature rise of windings indirectly cooled by hydrogen . 55
Table 10 – Adjustments to limits of temperature rise at the operating site of indirect
cooled windings to take account of non-reference operating conditions and ratings . 56
Table 11 – Assumed maximum ambient temperature . 57
Table 12 – Adjusted limits of temperature rise at the test site (∆θ ) for windings
T
indirectly cooled by air to take account of test site operating conditions . 58
Table 13 – Limits of temperature of directly cooled windings and their coolants . 59
Table 14 – Adjustments to limits of temperature at the operating site for windings
directly cooled by air or hydrogen to take account of non-reference operating
conditions and ratings . 60
Table 15 – Adjusted limits of temperature at the test site θ for windings directly
T
cooled by air to take account of test site operating conditions . 60
Table 16 – Minimum routine tests for machines assembled and tested in the factory of
the manufacturer. 61
Table 17 – Withstand voltage tests . 63
Table 18 – Test voltage factors for machines with an assigned IVIC according to
IEC 60034-18-41 and IEC 60034-18-42 . 64
Table 19 – Maximum safe operating speed (min− ) of three-phase single-speed cage
induction motors for voltages up to and including 1 000 V . 67
Table 20 – Overspeeds . 68
Table 21 – Cross-sectional areas of earthing conductors . 75
Table 22 – Schedule of tolerances on values of quantities . 76
Table B.1 – Electromagnetic emission limits per CISPR 11 Class B Group 1 . 83
Table B.2 – Electromagnetic emission limits per CISPR 11 Class A Group 1 . 83

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Rotating electrical machines -
Part 1: Rating and performance

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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This redline version of the official IEC Standard allows the user to identify the changes made
to the previous edition IEC 60034-1:2022. A vertical bar appears in the margin wherever a
change has been made. Additions are in green text, deletions are in strikethrough red text.

IEC 60034-1 has been prepared by IEC technical committee 2: Rotating machinery. It is an
International Standard.
This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
Clause,
subclause or Change
table number
1 Clarification with respect to machines with integrated EMC-active components added
2 Normative references updated
3 Note on meaning of “agreement” deleted; list of abbreviations added
4.2.9, 4.2.10 References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36
5.1 Reference to IEC TS 60034-25 converted into note
6.6 Clarification of requirements
7.2.1 Reference to IEC TS 60034-25 converted into note
7.5 Clarification of requirements
7.6 Reference to IEC TS 60034-25 converted into note
8.1 Clarification of references
8.6.1 Clarification on choice of method for large machines
Table 11 Updated values for thermal class 200 (N)
8.10.3 Clarification of requirements
9.2 Clarification on test voltage for old machines after rewinding
Table 17 Items 9 and 10 merged and clarified
9.7 Clarification on overspeed test for machines held at stock added
Table 20 Clarification on test speed for converter duty machines
10.2 Clarification of term ‘digital form’
10.3 Note on QR code deleted
11.1 Reference to protective earth test added
13.1 Clarifying flowchart added
13.2.2 Clarification on motors with integrated VSD added
13.3 Clarification of requirements after consultation with ACEC
13.5 Clarification of requirements after consultation with ACEC
14 Note on safety converted to normal text

The text of this International Standard is based on the following documents:
Draft Report on voting
2/2257/FDIS 2/2296/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts of the IEC 60034 series, published under the general title Rotating electrical
machines, can be found on the IEC website.
NOTE A table of cross-references of all IEC TC 2 publications can be found on the IEC TC 2 dashboard on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
1 Scope
This part of IEC 60034 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 with integrated EMC-active components such as a variable frequency converter are
considered being a power drive system (see the IEC 61800 series of standards). In such cases,
this document applies to the motor component of the power drive system only.
Machines within the scope of this document may can also be subject to superseding, modifying
or additional requirements in other standards, for example, IEC 60079 and IEC 60092.
NOTE If particular clauses of this document are modified to meet special applications, for example machines subject
to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60027-1:1992, Letters symbols to be used in electrical technology - Part 1: General
IEC 60027-1:1992/AMD1:1997
IEC 60027-1:1992/AMD2:2005
IEC 60027-4:2006, Letter symbols to be used in electrical technology - Part 4: Rotating electric
machines
IEC 60034-2 (all parts), Rotating electrical machines - Part 2: Standard methods for determining
losses and efficiency from tests (excluding machines for traction vehicles)
IEC 60034-3:2020, Rotating electrical machines - Part 3: Specific requirements for synchronous
generators driven by steam turbines or combustion gas turbines and for synchronous
compensators
IEC 60034-5:2020, Rotating electrical machines - Part 5: Degrees of protection provided by the
integral design of rotating electrical machines (IP code) - Classification
IEC 60034-6:1991, Rotating electrical machines - Part 6: Methods of cooling (IC code)
IEC 60034-8:2007, Rotating electrical machines - Part 8: Terminal markings and direction of
rotation
IEC 60034-8:2007/AMD1:2014
IEC 60034-12:2016, Rotating electrical machines - Part 12: Starting performance of single-
speed three-phase cage induction motors
IEC 60034-15:2009, Rotating electrical machines - Part 15: Impulse voltage withstand levels of
form-wound stator coils for rotating a.c. machines
IEC 60034-18 (all parts), Rotating electrical machines – Part 18: Functional evaluation of
insulation systems
IEC 60034-18-41:2014, Rotating electrical machines - Part 18-41: Partial discharge free
electrical insulation systems (Type I) used in rotating electrical machines fed from voltage
converters - Qualification and quality control tests
IEC 60034-18-41:2014/AMD1:2019
IEC 60034-18-42:2017, Rotating electrical machines - Part 18-42: Partial discharge resistant
electrical insulation systems (Type II) used in rotating electrical machines fed from voltage
converters - Qualification tests
IEC 60034-18-42:2017/AMD1:2020
IEC 60034-19:2014, Rotating electrical machines – Part 19: Specific test methods for d.c.
machines on conventional and rectifier-fed supplies
IEC TS 60034-25:2014, Rotating electrical machines – Part 25: AC electrical machines used in
power drive systems – Application guide
IEC 60034-27-4, Rotating electrical machines - Part 27-4: Measurement of insulation resistance
and polarization index of winding insulation of rotating electrical machines
IEC 60034-29:2008, Rotating electrical machines - Part 29: Equivalent loading and
superposition techniques - Indirect testing to determine temperature rise
IEC 60034-30-1:2014, Rotating electrical machines - Part 30-1: Efficiency classes of line
operated AC motors (IE code)
IEC TS 60034-30-2, Rotating electrical machines – Part 30-2: Efficiency classes of variable
speed AC motors (IE-code)
IEC 60034-30-3, Rotating electrical machines - Part 30-3: Efficiency classes of high voltage AC
motors (IE-code)
IEC 60034-33, Rotating electrical machines - Part 33: Specific technical requirements for hydro
generators Synchronous hydrogenerators including motor-generators - Specific requirements
IEC 60050-411:1996, International Electrotechnical Vocabulary (IEV) - Part 411: Rotating
machinery
IEC 60050-411:1996/AMD1:2007
IEC 60050-411:1996/AMD2:2021
IEC 60060-1:2010, High-voltage test techniques - Part 1: General terminology and test
requirements
IEC 60085:2007, Electrical insulation - Thermal evaluation and designation
IEC 60204-1:2016, Safety of machinery - Electrical equipment of machines - Part 1: General
requirements
IEC 60204-11:2018, Safety of machinery - Electrical equipment of machines - Part 11:
Requirements for equipment for voltages above 1 000 V AC or 1 500 V DC and not exceeding
36 kV
IEC 60335-1:2020, Household and similar electrical appliances - Safety - Part 1: General
requirements
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60417, Graphical symbols for use on equipment - 12-month subscription to regularly
updated online database comprising all graphical symbols published in IEC 60417
IEC 60445:2017, Basic and safety principles for man-machine interface, marking and
identification - Identification of equipment terminals, conductor terminations and conductors
IEC 60664-1:2020, Insulation coordination for equipment within low-voltage systems - Part 1:
Principles, requirements and tests
IEC 61148:2011, Terminal markings for valve device stacks and assemblies and for power
conversion equipment
IEC TS 61800-8, Adjustable speed electrical power drive systems – Part 8: Specification of
voltage on the power interface
CISPR 11:20152024, Industrial, scientific and medical equipment - Radio-frequency
disturbance characteristics - Limits and methods of measurement
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019
CISPR 14 (all parts), Electromagnetic compatibility - Requirements for household appliances,
electric tools and similar apparatus
CISPR 16 (all parts), Specification for radio disturbance and immunity measuring apparatus
and methods
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions in IEC 60050-411, and the
following apply.
NOTE 2 For the purposes of this document, the term ‘agreement’ means ‘agreement between the manufacturer and
purchaser’.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
– IEC Electropedia: available at http://www.electropedia.org/
– ISO Online browsing platform: available at http://www.iso.org/obp
NOTE For definitions concerning cooling and coolants, other than those in 3.17 to 3.22, IEC 60034-6 applies.
3.1.1
rated value
quantity value assigned, generally by a manufacturer, for a specified operating condition of a
machine
Note 1 to entry: The rated voltage or voltage range is the rated voltage or voltage range between lines at the
machine terminals.
[SOURCE: IEC 60050-411:1996, 411-51-23, modified – Note 1 to entry has been added.]
3.1.2
rating
set of rated values and operating conditions
[SOURCE: IEC 60050-411:1996, 411-51-24]
3.1.3
rated output
value of the output included in the rating
3.1.4
load
all the values of the, in case of a generator, electrical and, in case of a motor, mechanical
quantities that signify the demand made on a rotating machine by an electrical circuit or a
mechanism at a given instant
[SOURCE: IEC 60050-411:1996, 411-51-01, modified:modification indicated in italics – “in case
of a generator” and “in case of a motor” have been added.]
3.1.5
no-load
state of a machine rotating with zero output power (but under otherwise normal
operating conditions)
[SOURCE: IEC 60050-411:1996, 411-51-02, modified: modification indicated in italics – “(but
under otherwise normal operating conditions)” has been added.]
3.1.6
full load
load which causes a machine to operate at its rating
[SOURCE: IEC 60050-411:1996, 411-51-10]
3.1.7
full load value
quantity value for a machine operating at full load
Note 1 to entry: This concept applies to power (for example “full load power”), torque, current, speed, etc.
[SOURCE: IEC 60050-411:19962007, 411-51-11 411-50-25, modified – Note 1 to entry has
been added.]
3.1.8
rest and de-energized
complete absence of all movement and of all electrical supply or mechanical drive
[SOURCE: IEC 60050-411:1996, 411-51-03]
3.1.9
duty
statement of the load(s) to which the machine is subjected, including, if applicable, starting,
electric braking, no-load and rest and de-energized periods, and including their durations and
sequence in time
[SOURCE: IEC 60050-411:1996, 411-51-06]
3.1.10
duty type
continuous, short-time or periodic duty, comprising one or more loads remaining constant for
the duration specified, or a non-periodic duty in which generally load and speed vary within the
permissible operating range
[SOURCE: IEC 60050-411:1996, 411-51-13]
3.1.11
cyclic duration factor
ratio between the period of loading, including starting and electric braking, and the duration of
the duty cycle, expressed as a percentage
[SOURCE: IEC 60050-411:1996, 411-51-09]
3.1.12
locked-rotor torque
minimum measured torque the motor develops at its shaft end with the rotor locked, over all its
angular positions, at rated voltage and frequency
[SOURCE: IEC 60050-411:1996, 411-48-06, modified – “smallest” has been replaced with
“minimum”.]
3.1.13
locked-rotor current
greatest steady-state root mean square (RMS) current taken from the line with the rotor locked,
over all angular positions of its rotor, at rated voltage and frequency
[SOURCE: IEC 60050-411:1996, 411-48-16, modified – “motor held at rest” has been replaced
with “rotor locked”.]
3.1.14
pull-up torque
minimum steady-state asynchronous torque which the motor develops
between zero speed and the speed which corresponds to the breakdown torque, when the motor
is supplied at the rated voltage and frequency
Note 1 to entry: This definition does not apply to those asynchronous motors of which the torque continually
decreases with increase in speed.
Note 2 to entry: In addition to the steady-state asynchronous torques, harmonic s
...


IEC 60034-1 ®
Edition 15.0 2026-03
INTERNATIONAL
STANDARD
Rotating electrical machines -
Part 1: Rating and performance
ICS 29.160.01  ISBN 978-2-8327-1115-6

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CONTENTS
FOREWORD . 6
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 11
3.1 Terms and definitions. 11
3.2 Abbreviated terms . 17
4 Duty . 17
4.1 Declaration of duty . 17
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 . 22
4.2.6 Duty type S6 – Continuous operation periodic duty . 23
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 . 33
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 . 34
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 . 35
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 Electric 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 . 38
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 . 40
7.5 Three-phase AC machines operating on unearthed systems . 43
7.6 Voltage (peak and gradient) withstand levels . 43
7.7 Sudden short circuits . 44
8 Thermal performance and tests . 44
8.1 Thermal class . 44
8.2 Reference coolant . 44
8.3 Conditions for thermal tests . 45
8.3.1 Electric supply . 45
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 . 46
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 . 47
8.6 Determination of winding temperature . 47
8.6.1 Choice of method . 47
8.6.2 Determination by resistance method . 48
8.6.3 Determination by ETD method . 49
8.6.4 Determination by thermometer method . 50
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. 51
8.9 Measurement of bearing temperature . 51
8.10 Limits of temperature and of temperature rise . 51
8.10.1 General . 51
8.10.2 Indirect cooled windings . 52
8.10.3 Direct cooled windings . 56
8.10.4 Adjustments to take account of hydrogen purity on test . 57
8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 57
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 57
9 Other performance and tests . 59
9.1 Routine tests . 59
9.2 Withstand voltage test. 60
9.3 Occasional excess current . 64
9.3.1 General . 64
9.3.2 Generators . 64
9.3.3 Motors (except commutator motors and permanent magnet motors) . 64
9.3.4 Commutator machines . 64
9.4 Momentary excess torque for motors . 64
9.4.1 Polyphase induction motors and DC motors . 64
9.4.2 Polyphase synchronous motors . 65
9.4.3 Other motors . 65
9.5 Pull-up torque and locked-rotor torque for cage induction motors with direct
online starting . 65
9.6 Safe operating speed of cage induction motors . 65
9.7 Overspeed . 66
9.8 Short-circuit current for synchronous machines . 67
9.9 Short-circuit withstand test for synchronous machines . 67
9.10 Commutation test for commutator machines . 68
9.11 Total harmonic distortion (THD) for synchronous machines . 68
9.11.1 General . 68
9.11.2 Limits . 68
9.11.3 Tests . 68
9.12 Protective earth test . 69
9.13 Measurement of insulation resistance and polarization index of winding
insulation . 69
9.14 Shaft-voltage test . 70
10 Information requirements . 70
10.1 General . 70
10.2 Product documentation . 70
10.3 Rating plate . 70
10.4 Information content . 71
10.4.1 General . 71
10.4.2 Minimum information requirements . 71
10.4.3 AC machines . 72
10.4.4 All DC machines . 72
10.4.5 Machines over 5 kW (or 5 kVA) rated output . 72
10.4.6 Optional information . 72
11 Miscellaneous requirements . 73
11.1 Protective earthing of machines . 73
11.2 Shaft-end key(s) . 74
12 Tolerances . 75
12.1 General . 75
12.2 Tolerances on values of quantities . 75
13 Electromagnetic compatibility (EMC) . 76
13.1 General . 76
13.2 Immunity . 78
13.2.1 Machines not incorporating electronic circuits . 78
13.2.2 Machines incorporating electronic circuits . 79
13.3 Emission . 79
13.4 Immunity tests . 79
13.5 Emission measurements . 79
14 Application requirements . 80
Annex A (informative) Guidance for the application of duty type S10 and for
establishing the value of relative thermal life expectancy . 81
Annex B (informative) Electromagnetic compatibility (EMC) limits . 82
Bibliography . 83

Figure 1 – Continuous running duty – Duty type S1. 18
Figure 2 – Short-time duty – Duty type S2 . 19
Figure 3 – Intermittent periodic duty – Duty type S3 . 20
Figure 4 – Intermittent periodic duty with starting – Duty type S4 . 21
Figure 5 – Intermittent periodic duty with electric braking – Duty type S5 . 23
Figure 6 – Continuous operation periodic duty – Duty type S6 . 24
Figure 7 – Continuous operation periodic duty with electric braking – Duty type S7 . 25
Figure 8 – Continuous operation periodic duty with related load/speed changes – Duty
type S8 . 27
Figure 9 – Duty with non-periodic load and speed variations – Duty type S9 . 28
Figure 10 – Duty with discrete constant loads – Duty type S10 . 30
Figure 11 – Voltage and frequency limits for motors and for generators except
generators or synchronous compensators within the scope of IEC 60034-3 and
hydrogenerators within the scope of IEC 60034-33 . 42
Figure 12 – Worst case increase in temperature rise (∆θ) and recommended reduction
of output power (∆P) of motors as a function of the combined change of voltage and
frequency |∆∅| (indicative guideline to users of motors and generators only) . 43
Figure 13 – Factor K as a function of rated power in kW for determining R . 69
PE,M
Figure 14 – Flowchart clarifying the EMC requirements . 78

Table 1 – Preferred voltage ratings . 34
Table 2 – Unbalanced operating conditions for synchronous machines . 38
Table 3 – CCC symbol designation . 39
Table 4 – Primary functions of machines . 41
Table 5 – Reference coolant (see also Table 11) . 44
Table 6 – Time interval . 49
Table 7 – Measuring points . 51
Table 8 – Limits of temperature rise of windings indirectly cooled by air . 53
Table 9 – Limits of temperature rise of windings indirectly cooled by hydrogen . 54
Table 10 – Adjustments to limits of temperature rise at the operating site of indirect
cooled windings to take account of non-reference operating conditions and ratings . 55
Table 11 – Assumed maximum ambient temperature . 56
Table 12 – Adjusted limits of temperature rise at the test site (∆θ ) for windings
T
indirectly cooled by air to take account of test site operating conditions . 57
Table 13 – Limits of temperature of directly cooled windings and their coolants . 58
Table 14 – Adjustments to limits of temperature at the operating site for windings
directly cooled by air or hydrogen to take account of non-reference operating
conditions and ratings . 58
Table 15 – Adjusted limits of temperature at the test site θ for windings directly
T
cooled by air to take account of test site operating conditions . 59
Table 16 – Minimum routine tests for machines assembled and tested in the factory of
the manufacturer. 60
Table 17 – Withstand voltage tests . 62
Table 18 – Test voltage factors for machines with an assigned IVIC according to
IEC 60034-18-41 and IEC 60034-18-42 . 63
Table 19 – Maximum safe operating speed (min− ) of three-phase single-speed cage
induction motors for voltages up to and including 1 000 V . 66
Table 20 – Overspeeds . 67
Table 21 – Cross-sectional areas of earthing conductors . 74
Table 22 – Schedule of tolerances on values of quantities . 75
Table B.1 – Electromagnetic emission limits per CISPR 11 Class B Group 1 . 82
Table B.2 – Electromagnetic emission limits per CISPR 11 Class A Group 1 . 82

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Rotating electrical machines -
Part 1: Rating and performance

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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shall not be held responsible for identifying any or all such patent rights.
IEC 60034-1 has been prepared by IEC technical committee 2: Rotating machinery. It is an
International Standard.
This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
Clause,
subclause or Change
table number
1 Clarification with respect to machines with integrated EMC-active components added
2 Normative references updated
3 Note on meaning of “agreement” deleted; list of abbreviations added
4.2.9, 4.2.10 References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36
5.1 Reference to IEC TS 60034-25 converted into note
6.6 Clarification of requirements
7.2.1 Reference to IEC TS 60034-25 converted into note
7.5 Clarification of requirements
7.6 Reference to IEC TS 60034-25 converted into note
8.1 Clarification of references
8.6.1 Clarification on choice of method for large machines
Table 11 Updated values for thermal class 200 (N)
8.10.3 Clarification of requirements
9.2 Clarification on test voltage for old machines after rewinding
Table 17 Items 9 and 10 merged and clarified
9.7 Clarification on overspeed test for machines held at stock added
Table 20 Clarification on test speed for converter duty machines
10.2 Clarification of term ‘digital form’
10.3 Note on QR code deleted
11.1 Reference to protective earth test added
13.1 Clarifying flowchart added
13.2.2 Clarification on motors with integrated VSD added
13.3 Clarification of requirements after consultation with ACEC
13.5 Clarification of requirements after consultation with ACEC
14 Note on safety converted to normal text

The text of this International Standard is based on the following documents:
Draft Report on voting
2/2257/FDIS 2/2296/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts of the IEC 60034 series, published under the general title Rotating electrical
machines, can be found on the IEC website.
NOTE A table of cross-references of all IEC TC 2 publications can be found on the IEC TC 2 dashboard on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
1 Scope
This part of IEC 60034 is applicable to all rotating electric machines, except rotating electric
machines for rail and road vehicles, which are covered by the IEC 60349 series of standards.
Machines with integrated EMC-active components such as a variable frequency converter are
considered being a power drive system (see the IEC 61800 series of standards). In such cases,
this document applies to the motor component of the power drive system only.
Machines within the scope of this document can also be subject to superseding, modifying or
additional requirements in other standards, for example, IEC 60079 and IEC 60092.
NOTE If particular clauses of this document are modified to meet special applications, for example machines subject
to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60027-1, Letters symbols to be used in electrical technology - Part 1: General
IEC 60027-4, Letter symbols to be used in electrical technology - Part 4: Rotating electric
machines
IEC 60034-2 (all parts), Rotating electrical machines - Part 2: Standard methods for determining
losses and efficiency from tests (excluding machines for traction vehicles)
IEC 60034-3, Rotating electrical machines - Part 3: Specific requirements for synchronous
generators driven by steam turbines or combustion gas turbines and for synchronous
compensators
IEC 60034-5, Rotating electrical machines - Part 5: Degrees of protection provided by the
integral design of rotating electrical machines (IP code) - Classification
IEC 60034-6, Rotating electrical machines - Part 6: Methods of cooling (IC code)
IEC 60034-8, Rotating electrical machines - Part 8: Terminal markings and direction of rotation
IEC 60034-12:2016, Rotating electrical machines - Part 12: Starting performance of single-
speed three-phase cage induction motors
IEC 60034-15, Rotating electrical machines - Part 15: Impulse voltage withstand levels of form-
wound stator coils for rotating a.c. machines
IEC 60034-18-41, Rotating electrical machines - Part 18-41: Partial discharge free electrical
insulation systems (Type I) used in rotating electrical machines fed from voltage converters -
Qualification and quality control tests
IEC 60034-18-42, Rotating electrical machines - Part 18-42: Partial discharge resistant
electrical insulation systems (Type II) used in rotating electrical machines fed from voltage
converters - Qualification tests
IEC 60034-27-4, Rotating electrical machines - Part 27-4: Measurement of insulation resistance
and polarization index of winding insulation of rotating electrical machines
IEC 60034-29, Rotating electrical machines - Part 29: Equivalent loading and superposition
techniques - Indirect testing to determine temperature rise
IEC 60034-30-1, Rotating electrical machines - Part 30-1: Efficiency classes of line operated
AC motors (IE code)
IEC 60034-30-3, Rotating electrical machines - Part 30-3: Efficiency classes of high voltage AC
motors (IE-code)
IEC 60034-33, Rotating electrical machines - Part 33: Synchronous hydrogenerators including
motor-generators - Specific requirements
IEC 60050-411:1996, International Electrotechnical Vocabulary (IEV) - Part 411: Rotating
machinery
IEC 60060-1, High-voltage test techniques - Part 1: General terminology and test requirements
IEC 60085, Electrical insulation - Thermal evaluation and designation
IEC 60204-1, Safety of machinery - Electrical equipment of machines - Part 1: General
requirements
IEC 60204-11, Safety of machinery - Electrical equipment of machines - Part 11: Requirements
for equipment for voltages above 1 000 V AC or 1 500 V DC and not exceeding 36 kV
IEC 60335-1:2020, Household and similar electrical appliances - Safety - Part 1: General
requirements
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60417, Graphical symbols for use on equipment - 12-month subscription to regularly
updated online database comprising all graphical symbols published in IEC 60417
IEC 60445, Basic and safety principles for man-machine interface, marking and identification -
Identification of equipment terminals, conductor terminations and conductors
IEC 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1:
Principles, requirements and tests
CISPR 11:2024, Industrial, scientific and medical equipment - Radio-frequency disturbance
characteristics - Limits and methods of measurement
CISPR 14 (all parts), Electromagnetic compatibility - Requirements for household appliances,
electric tools and similar apparatus
CISPR 16 (all parts), Specification for radio disturbance and immunity measuring apparatus
and methods
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions in IEC 60050-411, and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
– IEC Electropedia: available at http://www.electropedia.org/
– ISO Online browsing platform: available at http://www.iso.org/obp
NOTE For definitions concerning cooling and coolants, other than those in 3.17 to 3.22, IEC 60034-6 applies.
3.1.1
rated value
quantity value assigned, generally by a manufacturer, for a specified operating condition of a
machine
Note 1 to entry: The rated voltage or voltage range is the rated voltage or voltage range between lines at the
machine terminals.
[SOURCE: IEC 60050-411:1996, 411-51-23, modified – Note 1 to entry has been added.]
3.1.2
rating
set of rated values and operating conditions
[SOURCE: IEC 60050-411:1996, 411-51-24]
3.1.3
rated output
value of the output included in the rating
3.1.4
load
all the values of the, in case of a generator, electrical and, in case of a motor, mechanical
quantities that signify the demand made on a rotating machine by an electrical circuit or a
mechanism at a given instant
[SOURCE: IEC 60050-411:1996, 411-51-01, modified – “in case of a generator” and “in case of
a motor” have been added.]
3.1.5
no-load
state of a machine rotating with zero output power (but under otherwise normal
operating conditions)
[SOURCE: IEC 60050-411:1996, 411-51-02, modified – “(but under otherwise normal operating
conditions)” has been added.]
3.1.6
full load
load which causes a machine to operate at its rating
[SOURCE: IEC 60050-411:1996, 411-51-10]
3.1.7
full load value
quantity value for a machine operating at full load
Note 1 to entry: This concept applies to power (for example “full load power”), torque, current, speed, etc.
[SOURCE: IEC 60050-411:2007, 411-50-25, modified – Note 1 to entry has been added.]
3.1.8
rest and de-energized
complete absence of all movement and of all electrical supply or mechanical drive
[SOURCE: IEC 60050-411:1996, 411-51-03]
3.1.9
duty
statement of the load(s) to which the machine is subjected, including, if applicable, starting,
electric braking, no-load and rest and de-energized periods, and including their durations and
sequence in time
[SOURCE: IEC 60050-411:1996, 411-51-06]
3.1.10
duty type
continuous, short-time or periodic duty, comprising one or more loads remaining constant for
the duration specified, or a non-periodic duty in which generally load and speed vary within the
permissible operating range
[SOURCE: IEC 60050-411:1996, 411-51-13]
3.1.11
cyclic duration factor
ratio between the period of loading, including starting and electric braking, and the duration of
the duty cycle, expressed as a percentage
[SOURCE: IEC 60050-411:1996, 411-51-09]
3.1.12
locked-rotor torque
minimum measured torque the motor develops at its shaft end with the rotor locked, over all its
angular positions, at rated voltage and frequency
[SOURCE: IEC 60050-411:1996, 411-48-06, modified – “smallest” has been replaced with
“minimum”.]
3.1.13
locked-rotor current
greatest steady-state root mean square (RMS) current taken from the line with the rotor locked,
over all angular positions of its rotor, at rated voltage and frequency
[SOURCE: IEC 60050-411:1996, 411-48-16, modified – “motor held at rest” has been replaced
with “rotor locked”.]
3.1.14
pull-up torque
minimum steady-state asynchronous torque which the motor develops
between zero speed and the speed which corresponds to the breakdown torque, when the motor
is supplied at the rated voltage and frequency
Note 1 to entry: This definition does not apply to those asynchronous motors of which the torque continually
decreases with increase in speed.
Note 2 to entry: In addition to the steady-state asynchronous torques, harmonic synchronous torques, which are a
function of rotor load angle, will be present at specific speeds. At such speeds, the accelerating torque may be
negative for some rotor load angles.
Note 3 to entry: Experience and calculation show this to be an unstable operating condition, and therefore, harmonic
synchronous torques do not prevent motor acceleration, and are excluded from this definition.
[SOURCE: IEC 60050-411:1996, 411-48-42, modified – “smallest” has been replaced with
“minimum”. Note 2 to entry has been modified. Note 3 to entry has been added.]
3.1.15
breakdown torque
maximum steady-state asynchronous torque which the motor develops
without an abrupt drop in speed, when the motor is supplied at the rated voltage and frequency
Note 1 to entry: This definition does not apply to motors with torques that continually decrease with increase in
speed.
[SOURCE: IEC 60050-411:1996, 411-48-43]
3.1.16
pull-out torque
maximum torque which the synchronous motor develops at
synchronous speed with rated voltage, frequency and field current
[SOURCE: IEC 60050-411:1996, 411-48-44]
3.1.17
cooling
procedure by means of which heat resulting from losses occurring in a machine is given up to
a primary coolant, which may be continuously replaced or may itself be cooled by a secondary
coolant in a heat exchanger
[SOURCE: IEC 60050-411:1996, 411-44-01]
3.1.18
coolant
medium, liquid or gas, by means of which heat is transferred
[SOURCE: IEC 60050-411:1996, 411-44-02]
3.1.19
primary coolant
medium, liquid or gas, which, being at a lower temperature than a part of a machine and in
contact with it, removes heat from that part
[
...


IEC 60034-1 ®
Edition 15.0 2026-03
NORME
INTERNATIONALE
Machines électriques tournantes -
Partie 1: Caractéristiques assignées et caractéristiques de fonctionnement
ICS 29.160.01  ISBN 978-2-8327-1115-6

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SOMMAIRE
AVANT-PROPOS . 6
1 Domaine d'application . 9
2 Références normatives . 9
3 Termes, définitions et abréviations . 11
3.1 Termes et définitions . 11
3.2 Abréviations . 17
4 Services . 17
4.1 Spécification du service . 17
4.2 Services types . 18
4.2.1 Service type S1 – Service continu . 18
4.2.2 Service type S2 – Service temporaire . 19
4.2.3 Service type S3 – Service intermittent périodique . 20
4.2.4 Service type S4 – Service intermittent périodique à démarrage . 21
4.2.5 Service type S5 – Service intermittent périodique à freinage électrique . 23
4.2.6 Service type S6 – Service ininterrompu périodique . 24
4.2.7 Service type S7 – Service ininterrompu périodique à freinage électrique . 26
4.2.8 Service type S8 – Service ininterrompu périodique à changements liés
de charge et de vitesse. 27
4.2.9 Service type S9 – Service à variations non périodiques de charge et de
vitesse . 28
4.2.10 Service type S10 – Service avec charges et vitesses constantes
discrètes . 29
5 Caractéristiques assignées . 32
5.1 Attribution des caractéristiques assignées . 32
5.2 Classes de caractéristiques assignées . 32
5.2.1 Caractéristiques assignées pour service continu . 32
5.2.2 Caractéristiques assignées pour service temporaire . 32
5.2.3 Caractéristiques assignées pour service périodique . 32
5.2.4 Caractéristiques assignées pour service non périodique . 32
5.2.5 Caractéristiques assignées pour service avec charges et vitesses
constantes discrètes . 33
5.2.6 Caractéristiques assignées pour charge équivalente . 33
5.3 Choix d'une classe de caractéristiques assignées . 33
5.4 Attribution de la puissance (utile) à une classe de caractéristiques assignées . 34
5.5 Puissance (utile) assignée . 34
5.5.1 Génératrices à courant continu . 34
5.5.2 Alternateurs . 34
5.5.3 Moteurs . 34
5.5.4 Compensateurs synchrones . 34
5.6 Tension assignée . 34
5.6.1 Génératrices à courant continu . 34
5.6.2 Alternateurs . 34
5.6.3 Moteurs à courant alternatif . 35
5.7 Combinaison préférentielle des tensions et des puissances (utiles) . 35
5.8 Machines qui ont plus d'un ensemble de caractéristiques assignées . 35
6 Conditions de fonctionnement sur site . 35
6.1 Généralités . 35
6.2 Altitude . 36
6.3 Température maximale de l'air ambiant . 36
6.4 Température minimale de l'air ambiant. 36
6.5 Température de l'eau de refroidissement . 36
6.6 Arrêt, stockage et transport . 36
6.7 Pureté de l'hydrogène de refroidissement . 36
7 Conditions de fonctionnement électriques . 37
7.1 Alimentation électrique . 37
7.2 Forme et symétrie des tensions et des courants . 38
7.2.1 Moteurs à courant alternatif . 38
7.2.2 Alternateurs . 39
7.2.3 Machines synchrones . 39
7.2.4 Moteurs à courant continu alimentés par convertisseurs statiques de
puissance . 40
7.3 Tension au démarrage des moteurs à courant alternatif . 41
7.4 Variations de tension et de fréquence en fonctionnement . 42
7.5 Machines triphasées à courant alternatif fonctionnant sur réseaux isolés . 45
7.6 Niveaux de tenue en tension (crête et gradient) . 45
7.7 Courts-circuits brusques . 46
8 Caractéristiques thermiques de fonctionnement et essais thermiques . 46
8.1 Classe thermique . 46
8.2 Fluide de refroidissement de référence . 46
8.3 Conditions des essais thermiques . 47
8.3.1 Alimentation électrique . 47
8.3.2 Température de la machine avant l'essai . 48
8.3.3 Température du fluide de refroidissement . 48
8.3.4 Mesurage de la température du fluide de refroidissement au cours des
essais . 48
8.4 Échauffement d'un élément de machine . 48
8.5 Méthodes de mesure de la température . 49
8.5.1 Généralités . 49
8.5.2 Méthode par variation de résistance . 49
8.5.3 Méthode par indicateurs internes de température (IIT) . 49
8.5.4 Méthode par thermomètre . 49
8.6 Détermination de la température d'enroulement . 49
8.6.1 Choix de la méthode . 49
8.6.2 Détermination par la méthode par variation de résistance . 50
8.6.3 Détermination par la méthode par indicateurs internes de température
(IIT) . 52
8.6.4 Détermination par la méthode du thermomètre . 53
8.7 Durée des essais thermiques . 53
8.7.1 Caractéristiques assignées pour service continu . 53
8.7.2 Caractéristiques assignées pour service temporaire . 53
8.7.3 Caractéristiques assignées pour service périodique . 53
8.7.4 Caractéristiques assignées pour service non périodique et
caractéristiques assignées pour service avec charges constantes
discrètes . 53
8.8 Détermination de la constante de temps thermique équivalente des
machines pour service type S9 . 53
8.9 Mesurage de la température des roulements . 54
8.10 Limites d'échauffement et de température . 54
8.10.1 Généralités . 54
8.10.2 Enroulements à refroidissement indirect . 55
8.10.3 Enroulements à refroidissement direct . 60
8.10.4 Corrections pour tenir compte de la pureté de l'hydrogène au cours de
l'essai . 60
8.10.5 Enroulements continuellement fermés sur eux-mêmes, circuits
magnétiques et tous les éléments de structure (à l'exclusion des
roulements), qu'ils soient ou non en contact direct avec une isolation . 60
8.10.6 Collecteurs et bagues, ouverts ou enfermés, et leurs balais et porte-
balais . 60
9 Autres caractéristiques de fonctionnement et essais . 63
9.1 Essais individuels de série . 63
9.2 Essais de tension de tenue . 64
9.3 Surintensité occasionnelle . 68
9.3.1 Généralités . 68
9.3.2 Génératrices . 68
9.3.3 Moteurs (sauf les moteurs à collecteur et les moteurs à aimants
permanents) . 68
9.3.4 Machines à collecteur . 69
9.4 Excès momentané de couple des moteurs . 69
9.4.1 Moteurs à induction polyphasés et moteurs à courant continu . 69
9.4.2 Moteurs synchrones polyphasés . 69
9.4.3 Autres moteurs . 70
9.5 Couple minimal pendant le démarrage et couple à rotor bloqué des moteurs
à induction à cage pour un démarrage direct en ligne . 70
9.6 Vitesse de sécurité en fonctionnement des moteurs à induction à cage . 70
9.7 Survitesse . 70
9.8 Courant de court-circuit des machines synchrones . 72
9.9 Essai de tenue au court-circuit des machines synchrones . 72
9.10 Essai de commutation des machines à collecteur. 73
9.11 Distorsion harmonique totale (THD) des machines synchrones . 73
9.11.1 Généralités . 73
9.11.2 Limites . 73
9.11.3 Essais . 73
9.12 Essai de mise à la terre de protection . 74
9.13 Mesurage de la résistance d'isolement et de l'indice de polarisation de
l'isolation d'enroulement . 75
9.14 Essai de la tension d'arbre . 75
10 Exigences relatives aux informations . 75
10.1 Généralités . 75
10.2 Documentation sur le produit . 76
10.3 Plaque signalétique . 76
10.4 Contenu des informations . 76
10.4.1 Généralités . 76
10.4.2 Exigences minimales relatives aux informations . 77
10.4.3 Machines à courant alternatif . 78
10.4.4 Toutes les machines à courant continu . 78
10.4.5 Machines de puissance (utile) assignée supérieure à 5 kW (ou 5 kVA) . 78
10.4.6 Informations facultatives . 78
11 Exigences diverses . 79
11.1 Mise à la terre de protection des machines . 79
11.2 Clavette(s) de bout d'arbre . 80
12 Tolérances . 81
12.1 Généralités . 81
12.2 Tolérances sur les valeurs des grandeurs . 81
13 Compatibilité électromagnétique (CEM) . 83
13.1 Généralités . 83
13.2 Immunité . 84
13.2.1 Machines n'incorporant pas de circuit électronique . 84
13.2.2 Machines incorporant des circuits électroniques . 85
13.3 Émission . 85
13.4 Essais d'immunité . 85
13.5 Mesurages des émissions . 85
14 Exigences relatives aux applications . 86
Annexe A (informative) Recommandations relatives à l'application du service type S10
et pour l'obtention de la valeur de l'espérance de vie thermique relative . 87
Annexe B (informative) Limites de compatibilité électromagnétique (CEM) . 88
Bibliographie . 89

Figure 1 – Service continu – Service type S1 . 18
Figure 2 – Service temporaire – Service type S2. 19
Figure 3 – Service intermittent périodique – Service type S3 . 21
Figure 4 – Service intermittent périodique à démarrage – Service type S4 . 22
Figure 5 – Service intermittent périodique à freinage électrique – Service type S5 . 24
Figure 6 – Service ininterrompu périodique – Service type S6. 25
Figure 7 – Service ininterrompu périodique à freinage électrique – Service type S7 . 26
Figure 8 – Service ininterrompu périodique à changements liés de charge et de vitesse
– Service type S8 . 28
Figure 9 – Service à variations non périodiques de charge et de vitesse – Service
type S9 . 29
Figure 10 – Service avec charges constantes discrètes – Service type S10 . 31
Figure 11 – Valeurs limites de tension et de fréquence pour les moteurs et les
génératrices à l'exception des génératrices et des compensateurs synchrones couverts
par l'IEC 60034-3 et les hydrogénératrices couvertes par l'IEC 60034-33 . 44
Figure 12 – Cas le plus défavorable d'échauffement (∆θ) et diminution recommandée
de la puissance utile (∆P) des moteurs en fonction de la variation conjointe de la
tension et de la fréquence |∆∅| (ligne directrice indicative pour les utilisateurs des
moteurs et des génératrices seulement) . 45
Figure 13 – Facteur K en fonction de la puissance assignée en kW pour déterminer
R . 75
PE,M
Figure 14 – Organigramme explicatif des exigences CEM . 84

Tableau 1 – Tensions assignées préférentielles . 35
Tableau 2 – Conditions de fonctionnement déséquilibrées pour les machines
synchrones . 40
Tableau 3 – Désignation du symbole CCC . 41
Tableau 4 – Fonctions principales des machines . 43
Tableau 5 – Fluide de refroidissement de référence (voir aussi le Table 11) . 47
Tableau 6 – Délai . 51
Tableau 7 – Points de mesure . 54
Tableau 8 – Limites d'échauffement des enroulements à refroidissement indirect par
l'air. . 56
Tableau 9 – Limites d'échauffement des enroulements à refroidissement indirect par
hydrogène . 57
Tableau 10 – Corrections aux limites des échauffements sur le site de fonctionnement
des enroulements à refroidissement indirect pour tenir compte de conditions de
fonctionnement et de caractéristiques assignées qui ne sont pas celles de référence . 58
Tableau 11 – Températures ambiantes maximales estimées . 59
Tableau 12 – Limites corrigées des échauffements sur le site d'essai (∆θ ) des
T
enroulements à refroidissement indirect par air pour tenir compte des conditions de
fonctionnement sur le site d'essai . 61
Tableau 13 – Limites des températures des enroulements à refroidissement direct et
de leurs fluides de refroidissement . 62
Tableau 14 – Corrections aux limites de température sur le site de fonctionnement
pour les enroulements à refroidissement direct par air ou hydrogène pour tenir compte
de conditions de fonctionnement et de caractéristiques assignées qui ne sont pas
celles de référence . 63
Tableau 15 – Limites corrigées de température sur le site d'essai θ pour les
T
enroulements à refroidissement direct par air pour tenir compte des conditions de
fonctionnement sur le site d'essai . 63
Tableau 16 – Essais individuels de série minimaux pour les machines assemblées et
soumises à l'essai dans l'installation du constructeur . 64
Tableau 17 – Essais de tension de tenue . 66
Tableau 18 – Facteurs de tension d'essai pour les machines à IVIC attribuée
conformément à l'IEC 60034-18-41 et à l'IEC 60034-18-42 . 68
Tableau 19 – Vitesse maximale de fonctionnement en sécurité (min− ) des moteurs
triphasés à induction à cage à une seule vitesse pour des tensions d'alimentation
inférieures ou égales à 1 000 V . 70
Tableau 20 – Survitesses . 72
Tableau 21 – Section des conducteurs de terre . 80
Tableau 22 – Nomenclature des tolérances sur les valeurs des grandeurs . 81
Tableau B.1 – Limites d'émission électromagnétique selon la CISPR 11, Classe B,
Groupe 1 . 88
Tableau B.2 – Limites d'émission électromagnétique selon la CISPR 11, Classe A,
Groupe 1 . 88

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Machines électriques tournantes -
Partie 1: Caractéristiques assignées et caractéristiques
de fonctionnement
AVANT-PROPOS
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6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
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8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L'IEC attire l'attention sur le fait que la mise en application du présent document peut entraîner l'utilisation d'un
ou de plusieurs brevets. L'IEC ne prend pas position quant à la preuve, à la validité et à l'applicabilité de tout
droit de brevet revendiqué à cet égard. À la date de publication du présent document, l'IEC n'avait pas reçu
notification qu'un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois, il y a lieu
d'avertir les responsables de la mise en application du présent document que des informations plus récentes
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L'IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de brevets.
L'IEC 60034-1 a été établie par le comité d'études 2 de l'IEC: Machines tournantes. Il s'agit
d'une Norme internationale.
Cette quinzième édition annule et remplace la quatorzième édition parue en 2022. Cette édition
constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
Numéro
d'article, de
Modification
paragraphe
ou de tableau
1 Clarification ajoutée en ce qui concerne les machines avec composants CEM actifs intégrés
2 Références normatives mises à jour
3 Note sur la signification du terme "accord" supprimée, liste des abréviations ajoutée
4.2.9, 4.2.10 Références à l'IEC TS 60034-25 supprimées, le terme "machine fonctionnant exclusivement
sur convertisseur" étant désormais défini en 3.36
5.1 Référence à l'IEC TS 60034-25 convertie en note
6.6 Clarification des exigences
7.2.1 Référence à l'IEC TS 60034-25 convertie en note
7.5 Clarification des exigences
7.6 Référence à l'IEC TS 60034-25 convertie en note
8.1 Clarification des références
8.6.1 Clarification du choix de la méthode pour les machines de grande taille
Tableau 11 Valeurs mises à jour pour la classe thermique 200 (N)
8.10.3 Clarification des exigences
9.2 Clarification de la tension d'essai des anciennes machines après rebobinage
Tableau 17 Points 9 et 10 fusionnés et clarifiés
9.7 Clarification ajoutée en ce qui concerne l'essai de survitesse des machines stockées
Tableau 20 Clarification de la vitesse d'essai pour les machines fonctionnant exclusivement sur
convertisseur
10.2 Clarification du terme "forme numérique"
10.3 Note sur le QR code supprimée
11.1 Référence à l'essai de mise à la terre de protection ajoutée
13.1 Ajout d'un organigramme explicatif
13.2.2 Clarification ajoutée en ce qui concerne les moteurs avec variateur de vitesse intégré
13.3 Clarification des exigences après consultation de l'ACEC
13.5 Clarification des exigences après consultation de l'ACEC
14 Note sur la sécurité convertie en texte normal

Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
2/2257/FDIS 2/2296/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l'élaboration de cette Norme internationale est l'anglais.
La version française de la norme n’a pas été soumise au vote.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2. Il a été développé selon les
Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par
l'IEC sont décrits plus en détail sous www.iec.ch/standardsdev/publications.
Une liste de toutes les parties de la série IEC 60034, publiées sous le titre général Machines
électriques tournantes, se trouve sur le site web de l'IEC.
NOTE Un tableau des correspondances entre toutes les publications du CE 2 de l'IEC peut être consulté sur la
page d'accueil du CE 2 de l'IEC, sur le site web de l'IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document
recherché. À cette date, le document sera
– reconduit,
– supprimé, ou
– révisé.
1 Domaine d'application
La présente partie de l'IEC 60034 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 avec composants CEM actifs intégrés comme un convertisseur à fréquence
variable sont considérées comme un entraînement électrique de puissance (voir la série de
normes IEC 61800). Dans ce cas, le présent document s'applique uniquement au composant
moteur de l'entraînement électrique de puissance.
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 l'IEC 60079 et l'IEC 60092.
NOTE Si certains articles du présent document sont modifiés afin de permettre des applications spéciales, par
exemple pour les machines soumises à la radioactivité ou les machines aérospatiales, tous les autres articles
s'appliquent dans la mesure où ils sont compatibles.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu'ils constituent, pour tout ou partie
de leur contenu, des exigences du présent document. Pour les références datées, seule
l'édition citée s'applique. Pour les références non datées, la dernière édition du document de
référence s'applique (y compris les éventuels amendements).
IEC 60027-1, Symboles littéraux à utiliser en électrotechnique - Partie 1: Généralités
IEC 60027-4, Symboles littéraux à utiliser en électrotechnique - Partie 4: Machines électriques
tournantes
IEC 60034-2 (toutes les parties), Machines électriques tournantes - Partie 2: Méthodes
normalisées pour la détermination des pertes et du rendement à partir d'essais (à l'exclusion
des machines pour véhicules de traction)
IEC 60034-3, Machines électriques tournantes - Partie 3: Exigences spécifiques pour les
alternateurs synchrones entraînés par des turbines à vapeur ou par des turbines à gaz et pour
les compensateurs synchrones
IEC 60034-5, Machines électriques tournantes - Partie 5: Degrés de protection procurés par la
conception intégrale de machines électriques tournantes (code IP) - Classification
IEC 60034-6, Machines électriques tournantes - Partie 6: Modes de refroidissement (code IC)
IEC 60034-8, Machines électriques tournantes - Partie 8: Marquages d'extrémité et sens de
rotation
IEC 60034-12:2016, Machines électriques tournantes - Partie 12: Caractéristiques de
démarrage des moteurs triphasés à induction à cage à une seule vitesse
IEC 60034-15, Machines électriques tournantes - Partie 15: Niveaux de tenue au choc
électrique des bobines de stator préformées des machines tournantes à courant alternatif
IEC 60034-18-41, Machines électriques tournantes - Partie 18-41: Systèmes d'isolation
électrique sans décharge partielle (Type I) utilisés dans des machines électriques tournantes
alimentées par des convertisseurs de tension - Essais de qualification et de contrôle qualité
IEC 60034-18-42, Machines électriques tournantes - Partie 18-42: Systèmes d'isolation
électrique résistants aux décharges partielles (Type II) utilisés dans des machines électriques
tournantes alimentées par convertisseurs de tension - Essais de qualification
IEC 60034-27-4, Machines électriques tournantes - Partie 27-4: Mesure de la résistance
d'isolement et de l'index de polarisation sur le système d'isolation des enroulements des
machines électriques tournantes
IEC 60034-29, Machines électriques tournantes - Partie 29: Techniques par charge équivalente
et par superposition - Essais indirects pour déterminer l'échauffement
IEC 60034-30-1, Machines électriques tournantes - Partie 30-1: Classes de rendement pour les
moteurs à courant alternatif alimentés par le réseau (code IE)
IEC 60034-30-3, Machines électriques tournantes - Partie 30-3: Classes de rendement des
moteurs à courant alternatif à haute tension (code IE)
IEC 60034-33, Machines électriques tournantes - Partie 33: Hydrogénératrices synchrones y
compris les groupes moteur-générateurs - Exigences spécifiques
IEC 60050-411:1996, Vocabulaire électrotechnique international (IEV) - Partie 411: Machines
tournantes
IEC 60060-1, Techniques des essais à haute tension - Partie 1: Terminologie générale et
exigences d'essai
IEC 60085, Isolation électrique - Évaluation et désignation thermiques
IEC 60204-1, Sécurité des machines - Équipement électrique des machines -
Partie 1: Exigences générales
IEC 60204-11, Sécurité des machines - Équipement électrique des machines -
Partie 11: Exigences pour les équipements fonctionnant à des tensions supérieures à 1 000 V
en courant alternatif ou 1 500 V en courant continu et ne dépassant pas 36 kV
IEC 60335-1:2020, Appareils électrodomestiques et analogues - Sécurité - Partie 1: Exigences
générales
IEC 60364 (toutes les parties), Installations électriques à basse tension
IEC 60417, Symboles graphiques utilisables sur le matériel - Abonnement de 12 mois à la base
de données en ligne régulièrement mise à jour comprenant tous les symboles graphiques
publiés dans l'IEC 60417
IEC 60445, Principes fondamentaux et de sécurité pour les interfaces homme-machine, le
marquage et l'identification - Identification des bornes de matériels, des extrémités de
conducteurs et des conducteurs
IEC 60664-1, Coordination de l'isolement des matériels dans les réseaux d'énergie électrique
à basse tension - Partie 1: Principes, exigences et essais
CISPR 11:2024, Appareils industriels, scientifiques et médicaux - Caractéristiques de
perturbations radioélectriques - Limites et méthodes de mesure
CISPR 14 (toutes les parties), Compatibilité électromagnétique - Exigences relatives aux
appareils électrodomestiques, aux outils électriques et aux appareils analogues
CISPR 16 (toutes les parties), Spécifications des méthodes et des appareils de mesure des
perturbations radioélectriques et de l'immunité aux perturbations radioélectriques
3 Termes, définitions et abréviations
3.1 Termes et définitions
Pour les besoins du présent document, les termes et définitions de l'IEC 60050-411 ainsi que
les suivants s'appliquent.
L'ISO et l'IEC tiennent à jour des bases de données terminologiques destinées à être utilisées
en normalisation, consultables aux adresses suivantes:
– IEC Electropedia: disponible à l'adresse http://www.electropedia.org/
– ISO Online browsing platform: disponible à l'adresse http://www.iso.org/obp
NOTE Pour des définitions autres que celles du 3.17 au 3.22 concernant le refroidissement et les fluides de
refroidissement, l'IEC 60034-6 s'applique.
3.1.1
valeur assignée
valeur d'une grandeur fixée, généralement par le constructeur, pour un fonctionnement spécifié
d'une machine
Note 1 à l'article: La tension assignée ou plage de tensions assignées est la tension assignée ou plage de tensions
assignées entre phases aux bornes de la machine.
[SOURCE: IEC 60050-411:1996, 411-51-23, modifié – La Note 1 à l'article a été ajoutée.]
3.1.2
caractéristiques assignées
ensemble des valeurs assignées et des conditions de fonctionnement
[SOURCE: IEC 60050-411:1996, 411-51-24]
3.1.3
puissance (utile) assignée
valeur de la puissance (utile) incluse dans les caractéristiques assignées
3.1.4
charge
ensemble des valeurs des grandeurs électriques, dans le cas d'un générateur, et mécaniques,
dans le cas d'un moteur, qui caractérisent les exigences imposées à une machine tournante
par un circuit électrique ou un dispositif mécanique à un instant donné
[SOURCE: IEC 60050-411:1996, 411-51-01, modifié – "dans le cas d'un générateur" et "dans
le cas d'un moteur" ont été ajoutés.]
3.1.5
à vide
état de fonctionnement d'une machine tournant à puissance nulle (mais en
conditions normales de fonctionnement par ailleurs)
[SOURCE: IEC 60050-411:1996, 411-51-02, modifié – "(mais en conditions normales de
fonctionnement par ailleurs)" a été ajouté.]
3.
...

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