IEC 60519-4:2013

IEC 60519-4 ®
Edition 4.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheating installations –
Part 4: Particular requirements for arc furnace installations

Sécurité dans les installations électrothermiques –
Partie 4: Exigences particulières pour les installations de fours à arc

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les
microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: csc@iec.ch.

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: csc@iec.ch.
IEC 60519-4 ®
Edition 4.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheating installations –

Part 4: Particular requirements for arc furnace installations

Sécurité dans les installations électrothermiques –

Partie 4: Exigences particulières pour les installations de fours à arc

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 25.180.10 ISBN 978-2-83220-873-1

– 2 – 60519-4 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Classification of electroheating equipment . 7
5 General requirements . 7
6 Isolation and switching . 8
7 Connections to the electrical supply network and internal connections . 10
8 Protection against electric shock . 10
9 Equipotential bonding . 11
10 Control circuits and control functions . 11
11 Protection against thermal influences . 11
12 Protection against other hazards . 11
13 Marking, labelling and technical documentation . 11
14 Commissioning, inspection, operation and maintenance . 11
Annex A (normative) Protection against electric shock – special measures . 14
Annex AA (normative) Systems to assure improved safety for personnel working in
the vicinity of electrodes and other live parts of secondary circuit . 15
Annex BB (normative) Additional requirements for the safety of non-electrical
components of furnace installations . 18
Annex CC (normative) Additional requirements for safety with respect to design of an
installation . 20
Bibliography . 23

Figure AA.1 – Arc furnace supply with HV furnace switch (or HV furnace breaker) in
open position and HV disconnector in open position . 15
Figure AA.2 – Arc furnace supply with HV furnace switch (or HV furnace breaker) in
open position and HV earthing switch in closed position . 15
Figure AA.3 – Arc furnace supply with buck-boost transformer or intermediate circuit
transformer . 16
Figure AA.4 – DC furnace supply with HV furnace switch (or HV furnace breaker) in
open position and HV disconnector in open position . 17
Figure AA.5 – DC furnace supply with HV furnace switch (or HV furnace breaker) in
closed position, valve firing pulses stopped and LV disconnector switch in open
position . 17

60519-4 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN ELECTROHEATING INSTALLATIONS –

Part 4: Particular requirements for arc furnace installations

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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60519-4 has been prepared by IEC technical committee 27:
Industrial electroheating and electromagnetic processing.
This fourth edition cancels and replaces the third edition published in 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– The structure has been amended and adjusted to IEC 60519-1:2010;
– The classification (Clause 4) has been adapted to details with respect to secondary
voltage in electric arc furnace installations;
– All provisions have been redrafted and the text is more concise with respect to EAF;
– Annexes AA, BB and CC have been restructured, with respect to details concerning high
voltage designs and non-electrical issues, however to be aware of in those installations.

– 4 – 60519-4 © IEC:2013
The text of this standard is based on the following documents:
FDIS Report on voting
27/904/FDIS 27/928/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.
A list of all the parts of IEC 60519 series, under the general title Safety in electroheating
installations, can be found on the IEC website.
The clauses of parts of the IEC 60519 series (hereinafter called Particular Requirements)
supplement or modify the corresponding clauses of IEC 60519-1:2010 (General requirements
hereinafter called Part 1).
This part of IEC 60519 is to be read in conjunction with Part 1. It supplements or modifies the
corresponding clauses of Part 1. Where the text indicates an "addition" to or a "replacement"
of the relevant provision of Part 1, these changes ar
...