IEC 60034-2-1:2007

Rotating electrical machines - Part 2-1:Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)

Establishes methods of determining efficiencies from tests, and also specifies methods of obtaining specific losses. Applies to d.c. machines and to a.c. synchronous and induction machines of all sizes within the scope of IEC 60034-1

Machines électriques tournantes - Partie 2-1: Méthodes normalisées pour la détermination des pertes et du rendement à partir d'essais (à l'exclusion des machines pour véhicules de traction)

Définit les méthodes de détermination du rendement à partir d'essais et spécifie également les méthodes permettant de déterminer des pertes spécifiques. S'applique aux machines à courant continu ainsi qu'aux machines à courant alternatif, synchrones et à induction, de toutes dimensions, qui entrent dans le domaine d'application de la CEI 60034-1.

General Information

• Status: Published
• Publication Date: 09-Sep-2007
• ICS: 29.160.01 - Rotating machinery in general
• ICS: 33.160.40 - Video systems
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: WG 28 - TC 2/WG 28
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 27-Jun-2014

Relations

• Replaces: IEC 61972:2002 - Method for determining losses and efficiency of three-phase cage induction motors
• Effective Date: 05-Sep-2023
• Replaces: IEC 60034-2:1972/AMD2:1996 - Amendment 2 - Rotating electrical machines. Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)
• Effective Date: 05-Sep-2023
• Revised: IEC 60034-2-1:2014 - Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60034-2-1
Edition 1.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 2-1: Standard methods for determining losses and efficiency from tests
(excluding machines for traction vehicles)

Machines électriques tournantes –
Partie 2-1: Méthodes normalisées pour la détermination des pertes et du
rendement à partir d’essais (à l’exclusion des machines pour véhicules de
traction)
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IEC 60034-2-1
Edition 1.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 2-1: Standard methods for determining losses and efficiency from tests
(excluding machines for traction vehicles)

Machines électriques tournantes –
Partie 2-1: Méthodes normalisées pour la détermination des pertes et du
rendement à partir d’essais (à l’exclusion des machines pour véhicules de
traction)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 29.160 ISBN 2-8318-9250-3
– 2 – 60034-2-1 © IEC:2007
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references.7

3 Terms and definitions .8

4 Symbols and abbreviated terms .13

4.1 Symbols .13
4.2 Additional subscripts.14
5 Basic requirements .15
5.1 Direct and indirect efficiency determination .15
5.2 Uncertainty .15
5.3 Preferred methods.16
5.4 Power supply.20
5.5 Instrumentation.20
5.6 Units .21
5.7 Resistance .21
6 Test methods for determination of efficiency .22
6.1 State of the machine under test and test categories .22
6.2 Excitation circuit measurements.23
6.3 Direct measurements.23
6.4 Indirect measurements .25
7 Determination of efficiency (direct current machines) .37
7.1 Determination from direct measurement.37
7.2 Determination from indirect measurement.37
8 Determination of efficiency (induction machines) .42
8.1 Determination from direct measurement.42
8.2 Determination from indirect measurement.43
9 Determination of efficiency (synchronous machines) .54
9.1 Determination from direct measurement.54
9.2 Determination from indirect measurement.55

Annex A (normative) Correction of dynamometer torque readings .61
Annex B (normative) Calculation of values for the Eh-star method .63
Annex C (informative) Types of excitation systems .66
Annex D (normative) Other test methods .67

60034-2-1 © IEC:2007 – 3 –
Figure 1 – Sketch for torque measurement test .24

Figure 2 – Sketch for dual supply back-to-back test (for synchronous machines:

I==If, f ) .24
MG M G
Figure 3 – Sketch for single supply back-to-back test, d.c. machines .26

Figure 4 – Sketch for single supply back-to-back test, synchronous machines .27

Figure 5 – Induction machine, T-model with equivalent iron loss resistor.31

Figure 6 – Sketch for single supply back-to-back, additional losses, d.c. machines .32

Figure 7 – Eh-star test circuit .35
Figure 8 – Vector diagram for obtaining current vector from reduced voltage test.46
Figure 9 – Induction machines, Reduced model for calculation .49
Figure 10 – Smoothing of the residual loss data.51
Figure 11 – Assigned allowance for additional load losses P , induction machines.53
LL
Table 1 – DC machines .17
Table 2 – Induction machines.18
Table 3 – Synchronous machines .19
Table 4 – Reference temperature .22
Table 5 – Multiplying factors for different speed ratios .42

– 4 – 60034-2-1 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ROTATING ELECTRICAL MACHINES –

Part 2-1: Standard methods for determining losses

and efficiency from tests
(excluding machines for traction vehicles)

FOREWORD
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