Rotating electrical machines - Part 2-2: Specific methods for determining separate losses of large machines from tests - Supplement to IEC 60034-2-1

IEC 60034-2-2:2024 applies to large rotating electrical machines and establishes additional methods of determining separate losses and to define an efficiency supplementing IEC 60034‑2‑1. These methods apply when full-load testing is not practical and results in a greater uncertainty. The specific methods described are:
- Calibrated-machine method.
- Retardation method.
- Calorimetric method.
- Summation of losses for permanent magnet excited synchronous machines.
This second edition cancels and replaces the first edition published in 2010. This edition includes the following significant technical changes with respect to the previous edition:
- Layout and procedures aligned with IEC 60034-2-1 and IEC 60034-2-3.
- Annex A added: an informative procedure for the summation of losses for large permanent-magnet excited synchronous machines.

Machines électriques tournantes - Partie 2-2: Méthodes spécifiques pour déterminer les pertes séparées des machines de grande taille à partir d'essais - Complément à l'IEC 60034-2-1

L'IEC 60034-2-2:2024 s'applique aux machines électriques tournantes de grande taille et établit des méthodes supplémentaires pour la détermination des pertes séparées et qui sont destinées à définir un rendement, en complément de l'IEC 60034‑2‑1. Ces méthodes s'appliquent lorsqu'un essai à pleine charge n'est pas possible ou qu'il présente une plus grande incertitude. Les méthodes spécifiques décrites sont:
- la méthode de la machine étalonnée;
- la méthode du ralentissement;
- la méthode calorimétrique;
- la sommation des pertes pour les machines synchrones avec une excitation à aimants permanents.
Cette deuxième édition annule et remplace la première édition parue en 2010. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement de la disposition et des procédures sur l'IEC 60034-2-1 et l'IEC 60034-2-3;
b) ajout de l'Annexe A: procédure informative pour la sommation des pertes des machines synchrones de grande taille avec une excitation à aimants permanents.

General Information

Status
Published
Publication Date
11-Mar-2024
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
01-Mar-2024
Completion Date
12-Mar-2024
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IEC 60034-2-2:2024 - Rotating electrical machines - Part 2-2: Specific methods for determining separate losses of large machines from tests - Supplement to IEC 60034-2-1 Released:3/12/2024 Isbn:9782832281710
English and French language
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IEC 60034-2-2 ®
Edition 2.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 2-2: Specific methods for determining separate losses of large machines
from tests – Supplement to IEC 60034-2-1

Machines électriques tournantes –
Partie 2-2: Méthodes spécifiques pour déterminer les pertes séparées des
machines de grande taille à partir d'essais – Complément à l'IEC 60034-2-1
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IEC 60034-2-2 ®
Edition 2.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –

Part 2-2: Specific methods for determining separate losses of large machines

from tests – Supplement to IEC 60034-2-1

Machines électriques tournantes –

Partie 2-2: Méthodes spécifiques pour déterminer les pertes séparées des

machines de grande taille à partir d'essais – Complément à l'IEC 60034-2-1

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01  ISBN 978-2-8322-8171-0

– 2 – IEC 60034-2-2:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviated terms . 7
4.1 Symbols . 7
4.2 Additional subscripts . 8
5 Basic requirements . 8
5.1 Direct and indirect efficiency determination . 8
5.1.1 General . 8
5.1.2 Direct . 8
5.1.3 Indirect . 8
5.2 Uncertainty . 9
6 Additional test methods for the determination of the efficiency of large machines . 9
6.1 General . 9
6.1.1 Overview . 9
6.1.2 Efficiency . 10
6.1.3 Total loss . 10
6.2 Method 2-2-A – Calibrated machine . 11
6.2.1 General . 11
6.2.2 Test procedure . 12
6.2.3 Direct efficiency determination . 12
6.2.4 Determination of separate losses . 13
6.3 Method 2-2-B – Retardation method. 13
6.3.1 General . 13
6.3.2 Test procedure . 15
6.3.3 Determination of deceleration and retardation constant . 17
6.3.4 Determination of separate losses . 19
6.4 Method 2-2-C – Calorimetric method . 20
6.4.1 General . 20
6.4.2 Calorimetric instrumentation . 22
6.4.3 Test procedure . 25
6.4.4 Determination of losses . 26
Annex A (informative) Summation of losses for permanent-magnet synchronous
machines . 30
A.1 General . 30
A.2 No-load test with magnetized rotor . 30
A.3 No-load test with unmagnetized rotor . 30
A.4 Iron losses . 31
A.5 Test with rotor removed . 31
A.6 Rated stator winding losses and additional load losses . 32
A.7 Total losses . 33
Bibliography . 34

Figure 1 – Efficiency determination according to method 2-2-A . 11
Figure 2 – Efficiency determination according to method 2-2-B . 14

Figure 3 – Method of the chord . 17
Figure 4 – Efficiency determination according to method 2-2-C . 21
Figure 5 – Reference surface . 22
Figure 6 – Four coolers connected in parallel, single calorimeter, single coolant . 23
Figure 7 – Series connected coolers, two coolants . 24
Figure 8 – Bypass piping . 24
Figure 9 – Parallel piping . 25
Figure 10 – Characteristics of pure water as a function of temperature . 27

Table 1 – Additional methods for large machines . 9

– 4 – IEC 60034-2-2:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –

Part 2-2: Specific methods for determining
separate losses of large machines from tests –
Supplement to IEC 60034-2-1
FOREWORD
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