IEC 60519-1:2003

INTERNATIONAL IEC
STANDARD
60519-1
Third edition
2003-07
Safety in electroheat installations–
Part 1:
General requirements
Sécurité dans les installations électrothermiques –
Partie 1:
Exigences générales
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INTERNATIONAL IEC
STANDARD
60519-1
Third edition
2003-07
Safety in electroheat installations–
Part 1:
General requirements
Sécurité dans les installations électrothermiques –
Partie 1:
Exigences générales
 IEC 2003  Copyright - all rights reserved
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 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
PRICE CODE
Commission Electrotechnique Internationale
U
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60519-1  IEC:2003(E)
CONTENTS
FOREWORD . 4

1 General. 6

1.1 Scope . 6

1.2 Object. 7

2 Normative references. 7

3 Terms and definitions. 8

3.1 General terms. 8
3.2 Electrical quantities and terms .10
4 Classification of electroheat equipment according to voltage bands .13
4.1 Voltage classification .13
4.2 Voltage bands.13
5 Classification of electroheat equipment according to frequency bands .13
5.1 Direct current equipment.13
5.2 Low-frequency equipment .13
5.3 Mains-frequency equipment .13
5.4 Medium-frequency equipment .13
5.5 High-frequency equipment .14
5.6 Microwave equipment .14
6 General requirements.14
6.1 Electroheat equipment .14
6.2 Electrical equipment of electroheat installations.15
6.3 Static charges – Stray fields – Electric and/or magnetic fields.16
6.4 Impact of electromagnetic effects.16
6.5 Ionizing radiation.16
6.6 Liquid cooling.17
7 Isolation and switching .17
7.1 Switching-off of special circuits .17
7.2 Switching at high voltage levels.18
8 Connection to the supply network and internal connections.18
8.1 General requirements .18
8.2 Fixed connection.18

8.3 Removable connection and flexible conductors.18
9 Protection against electric shock .19
9.1 General .19
9.2 Direct contact – special measures.19
9.3 Indirect contact – special measures .20
9.4 Recommendations for the operating instructions .20
10 Protection against overcurrent.20
11 Equipotential bonding.20
11.1 General .20
11.2 Protective bonding circuits .20
11.3 Bonding for operational purposes .21
11.4 Prohibition of the use of earth as part of an active circuit .21

60519-1  IEC:2003(E) – 3 –
12 Control circuits and control functions .21

12.1 Control circuits.21

12.2 Earthing of control circuits.22

13 Protection against thermal influences .23

14 Risk of fire and danger of explosion .23

15 Marking, labelling and technical documentation .23

15.1 Marking .23

15.2 Labelling.24

15.3 Technical documentation .24

16 Information on inspection and commissioning, and instructions for utilization and
maintenance of electroheat installations .24
16.1 General requirements .24
16.2 Information on inspection and commissioning.25
16.3 Instructions for utilization to be given in the technical documentation .25
16.4 Instructions for maintenance work to be given in the technical documentation.25
Bibliography .27

– 4 – 60519-1  IEC:2003(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 1: General requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60519-1 has been prepared by IEC technical committee 27:
Industrial electroheating equipment.

This third edition cancels and replaces the second edition published in 1984. It constitutes
a technical revision.
In this third edition of IEC 60519-1 significant technical changes with respect to the previous
edition are as follows:
– the scope is now extended to cover also voltage band 3 equipment with rated voltage not
exceeding 3 600 V a.c. or 5 000 V d.c.; the relevant provisions for such equipment have
been added in clauses on, for example protection against electric shock, equipotential
bonding or maintenance work;
– requirements concerning equipotential bonding have been essentially modified and
introduced in a separate clause, based on the actual relevant provisions of IEC 60204-1;
– general provisions on the impact of electromagnetic effects have been given;
– information concerning technical documentation has been modified;
– a bibliography has been added.

60519-1  IEC:2003(E) – 5 –
The text of this standard is based on the following documents:

FDIS Report on voting
27/358/FDIS 27/377/RVD
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the a
...