Rotating electrical machines - Part 26: Effects of unbalanced voltages on the performance of three-phase cage induction motors

Describes the effects of unbalanced voltages on the performance of three-phase cage induction motors.

Drehende elektrische Maschinen - Teil 26: Auswirkungen von Spannungsunsymmetrien auf das Betriebsverhalten von Drehstrom-Induktionsmotoren

Machines électriques tournantes - Partie 26: Effets d'un système de tensions déséquilibrées sur les caractéristiques de fonctionnement des moteurs à cage asynchrones triphasés

Décrit les effets des tensions déséquilibrées sur les caractéristiques de fonctionnement des moteurs asynchrones triphasés à cage.

Električni rotacijski stroji - 26. del: Učinkovanje nesimetričnih napetosti na lastnosti trifaznih motrojev s kratkostično kletko (IEC 60034-26:2006)

Opisuje vpliv nesimetričnih napetosti na lastnosti trifaznih motorjev s kratkostično kletko.

General Information

Status
Published
Publication Date
29-Nov-2006
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
6060 - Document made available
Due Date
30-Nov-2006
Completion Date
30-Nov-2006

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SLOVENSKI STANDARD
SIST EN 60034-26:2007
01-marec-2007
1DGRPHãþD
SIST-TS CLC/TS 60034-26:2005
(OHNWULþQLURWDFLMVNLVWURMLGHO8þLQNRYDQMHQHVLPHWULþQLKQDSHWRVWLQD
ODVWQRVWLWULID]QLKPRWURMHYVNUDWNRVWLþQRNOHWNR ,(&
Rotating electrical machines - Part 26: Effects of unbalanced voltages on the
performance of three-phase cage induction motors (IEC 60034-26:2006)
Drehende elektrische Maschinen - Teil 26: Auswirkungen von Spannungsunsymmetrien
auf das Betriebsverhalten von Drehstrom-Induktionsmotoren (IEC 60034-26:2006)
Machines électriques tournantes - Partie 26: Effets d'un système de tensions
déséquilibrées sur les caractéristiques de fonctionnement des moteurs à cage
asynchrones triphasés (CEI 60034-26:2006)
Ta slovenski standard je istoveten z: EN 60034-26:2006
ICS:
29.160.30 Motorji Motors
SIST EN 60034-26:2007 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60034-26:2007
---------------------- Page: 2 ----------------------
SIST EN 60034-26:2007
EUROPEAN STANDARD
EN 60034-26
NORME EUROPÉENNE
November 2006
EUROPÄISCHE NORM
ICS 29.160 Supersedes CLC/TS 60034-26:2004
English version
Rotating electrical machines
Part 26: Effects of unbalanced voltages on the performance
of three-phase cage induction motors
(IEC 60034-26:2006)
Machines électriques tournantes Drehende elektrische Maschinen
Partie 26: Effets d'un système de tensions Teil 26: Auswirkungen
déséquilibrées sur les caractéristiques von Spannungsunsymmetrien
de fonctionnement des moteurs auf das Betriebsverhalten
à cage asynchrones triphasés von Drehstrom-Induktionsmotoren
(CEI 60034-26:2006) (IEC 60034-26:2006)

This European Standard was approved by CENELEC on 2006-11-01. 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, 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

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60034-26:2006 E
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SIST EN 60034-26:2007
EN 60034-26:2006 - 2 -
Foreword

The text of document 2/1391/FDIS, future edition 1 of IEC 60034-26, prepared by IEC TC 2, Rotating

machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as

EN 60034-26 on 2006-11-01.
This European Standard supersedes CLC/TS 60034-26:2004.
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) 2007-08-01
– latest date by which the national standards conflicting
(dow) 2009-11-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60034-26:2006 was approved by CENELEC as a European

Standard without any modification.
__________
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SIST EN 60034-26:2007
- 3 - EN 60034-26:2006
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 60034-12 - Rotating electrical machines EN 60034-12 2002
Part 12: Starting performance of single-speed
three-phase cage induction motors
Undated reference.
Valid edition at date of issue.
---------------------- Page: 5 ----------------------
SIST EN 60034-26:2007
---------------------- Page: 6 ----------------------
SIST EN 60034-26:2007
NORME CEI
INTERNATIONALE
IEC
60034-26
INTERNATIONAL
Première édition
STANDARD
First edition
2006-07
Machines électriques tournantes –
Partie 26:
Effets d’un système de tensions déséquilibrées
sur les caractéristiques de fonctionnement des
moteurs à cage asynchrones triphasés
Rotating electrical machines –
Part 26:
Effects of unbalanced voltages on the performance
of three-phase cage induction motors
 IEC 2006 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.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

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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International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 7 ----------------------
SIST EN 60034-26:2007
60034-26  IEC:2006 – 3 –
CONTENTS

FOREWORD...........................................................................................................................5

INTRODUCTION.....................................................................................................................9

1 Scope.............................................................................................................................11

2 Normative references .....................................................................................................11

3 Effects of unbalanced voltages on performance..............................................................11

3.1 Currents ................................................................................................................11

3.2 Heating .................................................................................................................11

3.3 Torques.................................................................................................................13

3.4 Full-load speed .....................................................................................................13

4 Derating of motor to prevent overheating........................................................................13

Annex A (informative) Determination of the symmetrical components of the line-to-line

voltages U , U , U of a three-phase system .......................................................................17

1 2 3

Annex B (informative) Approximate determination................................................................21

Figure 1 – Typical values of derating of design N, three-phase cage induction motors

within the scope of IEC 60034-12 .........................................................................................15

Figure A.1 – Phasor diagram ................................................................................................17

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SIST EN 60034-26:2007
60034-26  IEC:2006 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 26: Effects of unbalanced voltages on the performance
of three-phase cage induction motors
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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