EN 60519-8:2005

SLOVENSKI SIST EN 60519-8:2005

STANDARD
december 2005
Varnost pri električnih grelnih inštalacijah – 8. del: Posebne zahteve za peči
za pretaljevanje žlindre (IEC 60519-8:2005)
Safety in electroheat installations – Part 8: Particular requirements for electroslag
remelting furnaces (IEC 60519-8:2005)
ICS 25.180.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60519-8
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2005

ICS 25.180.10
English version
Safety in electroheat installations
Part 8: Particular requirements for electroslag remelting furnaces
(IEC 60519-8:2005)
Sécurité dans les installations Sicherheit in Elektrowärmeanlagen
électrothermiques Teil 8: Besondere Anforderungen
Partie 8: Exigences particulières an Elektroschlacke-Umschmelzöfen
pour fours de refusion sous laitier (IEC 60519-8:2005)
électroconducteur
(CEI 60519-8:2005)
This European Standard was approved by CENELEC on 2005-09-01. 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

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60519-8:2005 E
Foreword
The text of document 27/472/FDIS, future edition 2 of IEC 60519-8, prepared by IEC TC 27, Industrial
electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60519-8 on 2005-09-01.
This part of EN 60519 is to be used in conjunction EN 60519-1:2003. The clauses of this standard
supplement the corresponding clauses of EN 60519-1.
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) 2006-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60519-8:2005 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60519-8:2005
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
1)
IEC 60050-841 - International electrotechnical vocabulary - -
Part 841: Industrial electroheat

IEC 60519-1 2003 Safety in electroheat installations EN 60519-1 2003
Part 1: General requirements
2)
IEC 60779 2005 Industrial electroheat equipment - Test EN 60779 -
methods for electroslag remelting
furnaces
1)
Undated reference.
2)
To be published.
NORME CEI
INTERNATIONALE
IEC
60519-8
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2005-08
Sécurité dans les installations
électrothermiques –
Partie 8:
Exigences particulières pour fours de refusion
sous laitier électroconducteur

Safety in electroheat installations –
Part 8:
Particular requirements for electroslag
remelting furnaces
 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
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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
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60519-8  IEC:2005 – 3 –
CONTENTS
FOREWORD.5

1 Scope and object.9
2 Normative references .9
3 Terms and definitions .9
4 Classification of electroheat equipment according to voltage bands.9
5 Classification of electroheat equipment according to frequency bands.11
6 General requirements .11
7 Isolation and switching .13
8 Connection to the supply network and internal connections .15
9 Protection against electric shock .15
10 Protection against overcurrent.15
11 Equipotential bonding .15
12 Control circuits and control functions .15
13 Protection against thermal influences .17
14 Risk of fire and danger of explosion.17
15 Marking, labelling and technical documentation .19
16 Information on inspection and commissioning, and instructions for utilization and
maintenance of electroheat installations .21

Annex A (normative) Additional requirements for the safety of non-electrical components
of furnace installations.23

60519-8  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 8: Particular requirements for
electroslag remelting furnaces

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 60519-8 has been prepared by IEC technical committee 27:
Industrial electroheating equipment.
This second edition cancels and replaces the first edition published in 1983 and constitutes a
technical revision.
The significant changes with respect to the previous edition result from adjustment to the third
edition of IEC 60519-1, in conjunction with which this standard is to be read. The clauses of
this standard supplement the corresponding clauses of IEC 60519-1.

60519-8  IEC:2005 – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
27/472/FDIS 27/492/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.
IEC 60519 consists of the following parts, under the general title Safety in electroheat
installations:
Part 1: General requirements
Part 2: Particular requirements for resistance heating equipment
Part 3: Particular requirements for induction and conduction heating and induction
melting installations
Part 4: Particular requirements for arc furnace installations
Part 5: Specifications for safety in plasma installations
Part 6: Specifications for safety in industrial microwave heating equipment
Part 7: Particular requirements for installations with electron guns
Part 8: Particular requirements for electroslag remelting furnaces
Part 9: Particular requirements for high-frequency dielectric heating installations
Part 10: Particular requirements for electrical resistance trace heating systems for
industrial and commercial applications
Part 11: Particular requirements for installations for electromagnetic stirring, transport or
pouring of metal liquids
Part 21: Particular requirements for resistance heating equipment – Heating and melting
glass equipment
NOTE If necessary, additional parts covering particular industrial electroheat equipment may be prepared.
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.
60519-8  IEC:2005 – 9 –
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 8: Particular requirements for
electroslag remelting furnaces

1 Scope and object
This part of IEC 60519 applies to electroheat installations for remelting and, in some cases,
for refining processes of metals through direct resistance heating of a conductive slag.
The particular requirements for the safety of persons in or around an electroslag remelting
furnace are the object of this standard. The general requirements are included in IEC 60519-1.
Test methods for electroslag remelting furnaces are specified in IEC 60779.
2 Nor
...