EN 60034-28:2007

SLOVENSKI STANDARD
01-november-2007
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Rotating electrical machines - Part 28: Test methods for determining quantities of
equivalent circuit diagrams for three-phase low-voltage cage induction motors (IEC
60034-28:2007)
Drehende elektrische Maschinen - Teil 28: Prüfverfahren zur Bestimmung der Größen in
Ersatzschaltbildern dreiphasiger Niederspannungs-Kurzschlussläufer-Induktionsmotoren
(IEC 60034-28:2007)
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 60034-28:2007)
Ta slovenski standard je istoveten z: EN 60034-28:2007
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
May 2007
EUROPÄISCHE NORM
ICS 29.160
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 60034-28:2007)
Machines électriques tournantes -  Drehende elektrische Maschinen -
Partie 28: Méthodes d'essai Teil 28: Prüfverfahren
pour la détermination des grandeurs zur Bestimmung der Größen
des schémas d'équivalence des circuits in Ersatzschaltbildern dreiphasiger
pour moteurs à induction Niederspannungs-Kurzschlussläufer-
à cage basse tension triphasés Induktionsmotoren
(CEI 60034-28:2007) (IEC 60034-28:2007)

This European Standard was approved by CENELEC on 2007-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

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

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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60034-28:2007 E
Foreword
The text of document 2/1415/FDIS, future edition 1 of IEC 60034-28, prepared by IEC TC 2, Rotating
machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60034-28 on 2007-05-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-05-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60034-28:2007 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60034-28:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

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

1) 2)
IEC 60034-1 - Rotating electrical machines - EN 60034-1 2004
Part 1: Rating and performance

IEC 60044 Series Instrument transformers EN 60044 Series

1) 2)
IEC 60051-1 - Direct acting indicating analogue electrical EN 60051-1 1998
measuring instruments and their
accessories -
Part 1: Definitions and general requirements
common to all parts
1)
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)
Undated reference.
2)
Valid edition at date of issue.

NORME CEI
INTERNATIONALE
IEC
60034-28
INTERNATIONAL
Première édition
STANDARD
First edition
2007-03
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
Rotating electrical machines –
Part 28:
Test methods for determining quantities of
equivalent circuit diagrams for three-phase
low-voltage cage induction motors
© IEC 2007 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

60034-28 © IEC:2007 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope.11
2 Normative references .11
3 Terms, definitions and symbols .11
3.1 Symbols .11
3.2 Equivalent Y-connection.17
4 Test requirements .17
4.1 Frequency and voltage .17
4.2 Instrumentation .17
5 Approximations and uncertainties .19
6 Test procedures .19
6.1 General .19
6.2 Stator d.c. line-to-line resistance measurement .21
6.3 Load-test.21
6.4 No-load test.21
6.5 Reverse rotation and locked rotor tests .23
7 Determination of motor quantities .23
7.1 General .23
7.2 Resistance of stator winding R .27
s
7.3 Equivalent resistance of iron losses R .27
fe
7.4 Total stator inductance L = L + L .29
ts m s
7.5 Total leakage inductance L .33
σ
7.6 Magnetizing inductance L and voltage U .37
m m
7.7 Stator and rotor leakage inductances L and L ’ .37
s r
7.8 Inductances for calculations at constant flux (rated load).37
7.9 Resistance of rotor cage R ’ referred to stator winding.39
r
Annex A (informative) Form for calculation of resistance of iron losses R .43
fe
Annex B (informative) Form for calculation of total stator inductance L .45
ts
Annex C (informative) Form for calculation of total leakage inductance L .47
σ
Annex D (informative) Form for calculation of magnetizing inductance L .49
m
Annex E (informative) Sample calculation .51

Figure 1 – Type-T equivalent circuit diagram .25
Figure 2 – Type-T equivalent circuit diagram (iron losses disregarded) .25
Figure 3 – Type-L equivalent circuit diagram (iron losses disregarded) .25
Figure 4 – Typical characteristic of inductance L over current I .31

60034-28 © IEC:2007 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ROTATING ELECTRICAL MACHINES –

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

FOREWORD
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