EN 60519-21:2009

SLOVENSKI STANDARD
01-oktober-2009
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SIST EN 60519-21:1999
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Safety in electroheat installations -- Part 21: Particular requirements for resistance
heating equipment - Heating and melting glass equipment
Sicherheit in Elektrowärmeanlagen - Teil 21: Besondere Anforderungen an Einrichtungen
mit Widerstandserwärmung - Einrichtungen zum Erwärmen und Schmelzen von Glas
Sécurité dans les installations électrothermiques -- Partie 21: Exigences particulières
pour les installations de chauffage par résistance - Installations électrothermiques de
fusion de verre
Ta slovenski standard je istoveten z: EN 60519-21:2009
ICS:
25.180.10 (OHNWULþQHSHþL Electric furnaces
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60519-21
NORME EUROPÉENNE
January 2009
EUROPÄISCHE NORM
ICS 25.180.10 Supersedes EN 60519-21:1998

English version
Safety in electroheat installations -
Part 21: Particular requirements for resistance heating equipment -
Heating and melting glass equipment
(IEC 60519-21:2008)
Sécurité dans les installations Sicherheit in Elektrowärmeanlagen -
électrothermiques - Teil 21: Besondere Anforderungen
Partie 21: Exigences particulières an Einrichtungen
pour les installations de chauffage mit Widerstandserwärmung -
par résistance - Einrichtungen zum Erwärmen
Installations électrothermiques und Schmelzen von Glas
de fusion de verre (IEC 60519-21:2008)
(CEI 60519-21:2008)
This European Standard was approved by CENELEC on 2008-12-01. 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: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60519-21:2009 E
Foreword
The text of document 27/630/CDV, future edition 2 of IEC 60519-21, prepared by IEC TC 27, Industrial
electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60519-21 on 2008-12-01.
This European Standard supersedes EN 60519-21:1998.
The significant changes with respect to EN 60519-21:1998 are as follows:
– EN 60519-1:2003 and EN 60519-2:2006 have been taken into account;
– definitions have been brought into line with IEC 60050-841:2004.
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) 2009-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-12-01
This standard is to be used in conjunction with EN 60519-2:2006. It is intended to specify particular
requirements for resistance heating and melting glass equipment. This Part 21 supplements or modifies
the corresponding clauses of EN 60519-2, so as to convert it into a European Standard.
Where a particular subclause of Part 2 is not mentioned in this Part 21, that subclause applies as far as is
reasonable. Where this standard states "addition", "modification" or "replacement", the relevant text of
Part 2 is to be adapted accordingly.
NOTE  Subclauses and notes which are additional to those in Part 2 are numbered starting from 101.
__________
Endorsement notice
The text of the International Standard IEC 60519-21:2008 was approved by CENELEC as a European
Standard without any modification.
__________
IEC 60519-21
Edition 2.0 2008-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheat installations –
Part 21: Particular requirements for resistance heating equipment – Heating and
melting glass equipment
Sécurité dans les installations électrothermiques –
Partie 21: Exigences particulières pour les installations de chauffage par
résistance – Installations électrothermiques de fusion de verre

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
H
CODE PRIX
ICS 25.180.10 ISBN 2-8318-1001-9
– 2 – 60519-21 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope and object.5
2 Normative references .5
3 Terms and definitions .5
4 Classification of electroheat equipment according to voltage bands.6
5 Classification of electroheat equipment according to frequency bands.6
6 General requirements .6
7 Isolation and switching .6
8 Connection to the supply network and internal connections .6
9 Protection against electric shock .6
10 Protection against overcurrent.7
11 Equipotential bonding .7
12 Control circuits and control functions .7
13 Protection against thermal influences .7
14 Risk of fire and danger of explosion.7
15 Marking, labelling and technical documentation .7
16 Information on inspection and commissioning and instructions for utilization and
maintenance of electroheat installations .7

60519-21 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 21: Particular requirements
for resistance heating equipment –
Heating and melting glass equipment

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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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
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...