EN 60034-28:2013

Rotating electrical machines - Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors

IEC 60034-28:2012 applies to three-phase low-voltage cage induction motors of frame numbers 56 to 400 as specified in IEC 60072-1. This standard establishes procedures to obtain values for elements of single phase equivalent circuit diagrams from tests and defines standard elements of these diagrams. This edition includes the following significant technical changes with respect to the previous edition: - the formulae are now all given for equivalent star-connection equivalent circuit diagrams; - procedures for the determination of equivalent circuit parameters from a load curve test as an alternative to the reverse rotation and locked rotor tests have been added.

Drehende elektrische Maschinen - Teil 28: Prüfverfahren zur Bestimmung der Ersatzschaltbildgrößen dreiphasiger Niederspannungs-Käfigläufer-Asynchronmotoren

Machines électriques tournantes - Partie 28: Méthodes d'essai pour la détermination des grandeurs des schémas d'équivalence des circuits pour moteurs à induction à cage basse tension triphasés

La CEI 60034-28:2012 s'applique aux moteurs à induction à cage basse tension triphasés de désignations de carcasses entre 56 et 400, spécifiés dans la CEI 60072-1. La présente norme définit des éléments normalisés de schémas de circuits équivalents monophasés et établit à partir d'essais des procédures pour obtenir des valeurs pour ces éléments. Cette édition inclut les modifications techniques significatives suivantes par rapport à l'édition précédente: - toutes les formules sont maintenant données pour des circuits de connexion en étoile équivalente; - les procédures pour la détermination des paramètres du circuit équivalent à partir d'un test de courbe de charge, comme alternative aux tests en rotation en sens inverse et rotor bloqué rotors, ont été ajoutées.

Električni rotacijski stroji - 28. del: Preskusne metode za ugotavljanje veličin nadomestnih shem trifaznih nizkonapetostnih motorjev z indukcijsko kletko (IEC 60034-28:2012)

Ta del standarda IEC 60034 se uporablja za trifazne nizkonapetostne motorje z indukcijsko kletko s številkami okvirjev 56 do 400, kot določa standard IEC 60072-1. Ta standard določa postopke za pridobivanje vrednosti za elemente enofaznih ekvivalentnih tokokrogov iz preskusov ter opredeljuje standardne elemente teh tokokrogov.

General Information

• Status: Published
• Publication Date: 13-Jun-2013
• Withdrawal Date: 16-Jan-2016
• ICS: 29.160 - Rotating machinery
• Technical Committee: CLC/TC 2 - Rotating machinery
• Drafting Committee: IEC/TC 2 - IEC_TC_2
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 14-Jun-2013
• Completion Date: 14-Jun-2013
• Ref Project: SIST EN 60034-28:2013 - Rotating electrical machines - Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors (IEC 60034-28:2012)

Relations

• Replaces: EN 60034-28:2007 - Rotating electrical machines - Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2013
1DGRPHãþD
SIST EN 60034-28:2007
(OHNWULþQLURWDFLMVNLVWURMLGHO3UHVNXVQHPHWRGH]DXJRWDYOMDQMHYHOLþLQ
QDGRPHVWQLKVKHPWULID]QLKQL]NRQDSHWRVWQLKPRWRUMHY]LQGXNFLMVNRNOHWNR,(&

Rotating electrical machines - Part 28: Test methods for determining quantities of
equivalent circuit diagrams for three-phase low-voltage cage induction motors (IEC
60034-28:2012)
Drehende elektrische Maschinen - Teil 28: Prüfverfahren zur Bestimmung der Größen in
Ersatzschaltbildern dreiphasiger Niederspannungs-Kurzschlussläufer-Induktionsmotoren
(IEC 60034-28:2012)
Machines électriques tournantes - Partie 28: Méthodes d'essai pour la détermination des
grandeurs des schémas d'équivalence des circuits pour moteurs à induction à cage
basse tension triphasés (CEI 60034-28:2012)
Ta slovenski standard je istoveten z: EN 60034-28:2013
ICS:
29.160.30 Motorji Motors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60034-28
NORME EUROPÉENNE
June 2013
EUROPÄISCHE NORM
ICS 29.160 Supersedes EN 60034-28:2007

English version
Rotating electrical machines -
Part 28: Test methods for determining quantities of equivalent circuit
diagrams for three-phase low-voltage cage induction motors
(IEC 60034-28:2012)
Machines électriques tournantes -  Drehende elektrische Maschinen -
Partie 28: Méthodes d'essai pour la Teil 28: Prüfverfahren zur Bestimmung der
détermination des grandeurs des Ersatzschaltbildgrößen dreiphasiger
schémas d'équivalence des circuits pour Niederspannungs-Käfigläufer-
moteurs à induction à cage basse tension Asynchronmotoren
triphasés (IEC 60034-28:2012)
(CEI 60034-28:2012)
This European Standard was approved by CENELEC on 2013-01-17. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60034-28:2013 E
Foreword
The text of document 2/1685/FDIS, future edition 2 of IEC 60034-28, prepared by IEC/TC 2 "Rotating
machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2013-12-14
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2016-01-17
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60034-28:2007.

EN 60034-28:2007:
a) the formulae are now all given for equivalent star-connection equivalent circuit diagrams. They are
applied even in the case of delta connected windings. All formulae for delta connected equivalent
circuit diagrams have been moved to notes;
b) procedures for the determination of equivalent circuit parameters from a load curve test as an
alternative to the reverse rotation and locked rotor tests have been added.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60034-28:2012 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 60034-28:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60034-1 (mod) 2010 Rotating electrical machines - EN 60034-1 2010
Part 1: Rating and performance + corr. October 2010

IEC 60034-2-1 - Rotating electrical machines - EN 60034-2-1 -
Part 2-1: Standard methods for determining
losses and efficiency from tests (excluding
machines for traction vehicles)

IEC 60034-2-2 - Rotating electrical machines - EN 60034-2-2 -
Part 2-2: Specific methods for determining
separate losses of large machines from tests
- Supplement to IEC 60034-2-1
1)
IEC/TS 60034-2-3 - Rotating electrical machines - - -
Part 2-3: Specific test methods for
determining losses and efficiency of
converter-fed AC motors
IEC/TS 60034-25 - Rotating electrical machines - CLC/TS 60034-25 -
Part 25: Guidance for the design and
performance of a.c. motors specifically
designed for converter supply
IEC 60044 Series Instrument transformers EN 60044 Series

IEC 60051-1 - Direct acting indicating analogue electrical EN 60051-1 -
measuring instruments and their accessories
- Part 1: Definitions and general
requirements common to all parts

IEC 60072-1 - Dimensions and output series for rotating - -
electrical machines -
Part 1: Frame numbers 56 to 400 and flange
numbers 55 to 1 080
1)
To be published.
IEC 60034-28 ®
Edition 2.0 2012-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Rotating electrical machines –

Part 28: Test methods for determining quantities of equivalent circuit diagrams

for three-phase low-voltage cage induction motors

Machines électriques tournantes –

Partie 28: Méthodes d’essai pour la détermination des grandeurs des schémas

d’équivalence des circuits pour moteurs à induction à cage basse tension

triphasés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.160 ISBN 978-2-83220-553-2

– 2 – 60034-28 © IEC:2012
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and conventions . 7
3.1 Terms and definitions . 7
3.2 Symbols . 8
3.3 Subscripts . 9
3.4 Winding connection . 9
4 Test requirements . 10
4.1 General . 10
4.2 Frequency and voltage . 10
4.3 Instrumentation . 10
4.3.1 Measuring instruments for electrical quantities, speed and frequency . 10
4.3.2 Instrument transformers . 10
4.3.3 Temperature measurement . 10
5 Approximations and uncertainties . 10
6 Test procedures . 11
6.1 General . 11
6.2 Stator d.c. line-to-line resistance measurement . 11
6.3 Load-test at rated load . 11
6.4 Load curve test. 12
6.5 No-load test . 12
6.6 Reverse rotation and locked rotor tests . 13
6.6.1 General . 13
6.6.2 Reverse rotation test . 13
6.6.3 Locked rotor test. 13
7 Determination of motor quantities . 13
7.1 General . 13
7.2 Resistance of stator winding R . 15
s
7.3 Total stator inductance L = L + L . 15
ts m σs
7.3.1 General . 15
7.3.2 Determination procedure . 15
7.4 Equivalent resistance of iron losses R . 16
feΓ
7.4.1 Constant losses . 16
7.4.2 Friction and windage losses. 17
7.4.3 Iron losses . 17
7.5 Total leakage inductance L . 18
tσ
7.5.1 General . 18
7.5.2 Distribution of leakage inductances between stator and rotor. 18
7.5.3 Determination of total leakage inductance from a reverse rotation or
locked rotor test (6.6) . 18
7.5.4 Determination of total leakage inductance from a load curve test (6.4) . 20
7.6 Magnetizing inductance L and voltage U . 21
m m
7.6.1 From a reverse rotation or locked rotor test (6.6) . 21
7.6.2 From a load curve test (6.4) . 21

60034-28 © IEC:2012 – 3 –
7.7 Stator and rotor leakage inductances L and L ’ . 22
σs σr
7.7.1 From a reverse rotation or locked rotor test (6.6) . 22
7.7.2 From a load curve test (6.4) . 22
7.8 Inductances for calculations at constant flux (rated load) . 22
7.9 Resistance of rotor cage R ’ referred to the stator winding and frequency . 23
r
7.10 Equivalent resistance of iron losses R . 25
fe
Annex A (informative) Sample calculation . 26

Figure 1 – Type-T equivalent circuit diagram . 14
Figure 2 – Type-T equivalent circuit diagram
...