SIST EN 60034-11:2005

SLOVENSKI STANDARD
SIST EN 60034-11:2005
01-junij-2005
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Rotating electrical machines - Part 11: Thermal protection (IEC 60034-11:2004)
Drehende elektrische Maschinen - Teil 11: Thermischer Schutz (IEC 60034-11:2004)
Machines électriques tournantes - Partie 11: Protection thermique (CEI 60034-11:2004)
Ta slovenski standard je istoveten z: EN 60034-11:2004
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
SIST EN 60034-11:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD EN 60034-11
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2004

ICS 29.160


English version


Rotating electrical machines
Part 11: Thermal protection
(IEC 60034-11:2004)


Machines électriques tournantes Drehende elektrische Maschinen
Partie 11: Protection thermique Teil 11: Thermischer Schutz
(CEI 60034-11:2004) (IEC 60034-11:2004)






This European Standard was approved by CENELEC on 2004-10-01. 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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and 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


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60034-11:2004 E

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EN 60034-11:2004 - 2 -
Foreword
The text of document 2/1299/FDIS, future edition 2 of IEC 60034-11, prepared by IEC TC 2, Rotating
machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60034-11 on 2004-10-01.
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) 2005-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60034-11:2004 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 60034-11:2004
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 Where 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 2004 Rotating electrical machines EN 60034-1 2004
Part 1: Rating and performance

IEC 60034-12 2002 Part 12: Starting performance of single- EN 60034-12 2002
speed three-phase cage induction motors

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NORME CEI
INTERNATIONALE IEC
60034-11
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-07
Machines électriques tournantes –
Partie 11:
Protection thermique
Rotating electrical machines –
Part 11:
Thermal protection
© IEC 2004 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
CODE PRIX
PRICE CODE M
Commission Electrotechnique Internationale
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60034-11 © IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references.11
3 Definitions.11
4 Thermal protection limits .13
5 Protection against thermal overloads with slow variation .13
6 Protection against thermal overloads with rapid variation.15
7 Restart after tripping.17
8 Type Tests.17
8.1 General.17
8.2 Verification of temperature due to the thermal overloads with slow variation.17
8.3 Verification of temperature due to thermal overloads with rapid variation.17
9 Routine tests.19
Figure 1 – Example of thermal overload with slow variation and direct thermal
protection .19
Figure 2 – Example of thermal overload with slow variation in the case of too intensive
intermittent periodic duty with starting (duty S4) and direct thermal protection .21
Figure 3 – Example of thermal overload with rapid variation where the thermally
critical part has direct thermal protection .23
Figure 4 – Example of thermal overload with rapid variation where the thermally
critical part has indirect thermal protection.25
Table 1 – Maximum winding temperatures for overloads with slow variation.15
Table 2 – Maximum winding temperatures for overloads with rapid variation.15

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60034-11 © IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 11: Thermal protection
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60034-11 has been prepared by IEC technical committee 2:
Rotating machinery.
This second edition cancels and replaces the first edition published in 1978. This edition
constitutes a technical revision and applies to machines manufactured in accordance with
IEC 60034-12.
The main change with respect to the previous edition is the reduction of the two categories of
maximum winding temperatures for overloads with slow and rapid variation to one to avoid
confusion.

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60034-11 © IEC:2004 – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
2/1299/FDIS 2/1309/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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60034-11 © IEC:2004 – 9 –
INTRODUCTION
Thermal protection systems are based on the principle of protecting or monitoring the
vulnerable machine parts against excessive temperatures. This requires the selection of the
appropriate thermal protection device to suit both the type of protection required and the
machine component to be protected. This standard does not detail the protection methods
available or specify the protection method to be used for particular applications but instead it
specifies the temperature of the protected parts that should not be exceeded if a fault or
machine abuse occurs.
The requirements are not intended to guarantee a "normal" machine life for all conditions of
use, but rather to avoid both failure and accelerated premature thermal ageing of the winding
insulation. The requirements result from a
...