Safety in electroheat installations -- Part 7: Particular requirements for installations with electron guns

This part of IEC 60519 deals with safety of electroheat installations with electron guns. It applies to all the electroheat applications with electron guns. This standard, whilst prepared for electroheat installations with electron guns may, however, also be used for non-thermal applications with electron guns and equipment employing glow discharge systems, where applicable. This standard applies also to high-voltage sources feeding electron guns. All requirements of IEC 60519-1 apply. Additional requirements for installations covered by this part of the standard are given in Clauses 6 to 16.

Sicherheit in Elektrowärmeanlagen - Teil 7: Besondere Anforderungen an Anlagen mit Elektronenkanonen

Sécurité dans les installations électrothermiques - Partie 7: Exigences particulières pour les installations comportant des canons à électrons

Traite de la sécurité des installations électrothermiques comportant des canons à électrons et s'applique à toutes les applications de l'électrothermie comportant des canons à électrons. Peut être utilisé pour des applications non thermiques comportant des canons à électrons et des équipements employant des systèmes à décharge luminescente. S'applique aussi aux sources à haute tension alimentant les canons à électrons. Les modifications principales par rapport à l'édition précédente comprennent: prise en compte des dernières éditions des publications CEI; addition de nouveaux articles; mise à jour des exigences du système de mise à la terre; modification de la disposition du conducteur de retour.

Varnost pri električnih grelnih inštalacijah - 7. del: Posebne zahteve za inštalacije z elektronskimi topovi (IEC 60519-7:2008)

General Information

Status
Published
Publication Date
18-Aug-2009
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jul-2009
Due Date
11-Sep-2009
Completion Date
19-Aug-2009

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SLOVENSKI STANDARD
SIST EN 60519-7:2009
01-september-2009

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Safety in electroheat installations -- Part 7: Particular requirements for installations with

electron guns

Sécurité dans les installations électrothermiques - Partie 7: Exigences particulières pour

les installations comportant des canons à électrons
Ta slovenski standard je istoveten z: EN 60519-7:2008
ICS:
25.180.10 (OHNWULþQHSHþL Electric furnaces
SIST EN 60519-7:2009 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60519-7:2009
---------------------- Page: 2 ----------------------
SIST EN 60519-7:2009
EUROPEAN STANDARD
EN 60519-7
NORME EUROPÉENNE
December 2008
EUROPÄISCHE NORM
ICS 25.180.10
English version
Safety in electroheat installations -
Part 7: Particular requirements for installations with electron guns
(IEC 60519-7:2008)
Sécurité dans les installations Sicherheit in Elektrowärmeanlagen -
électrothermiques - Teil 7: Besondere Anforderungen
Partie 7: Exigences particulières an Anlagen mit Elektronenkanonen
pour les installations comportant (IEC 60519-7:2008)
des canons à électrons
(CEI 60519-7:2008)

This European Standard was approved by CENELEC on 2008-10-21. 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: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60519-7:2008 E
---------------------- Page: 3 ----------------------
SIST EN 60519-7:2009
EN 60519-7:2008 - 2 -
Foreword

The text of document 27/578/CDV, future edition 2 of IEC 60519-7, prepared by IEC TC 27, Industrial

electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by

CENELEC as EN 60519-7 on 2008-10-21.

This standard is to be used in conjunction with EN 60519-1:2003. It is intended to specify particular

requirements for electroheating installations with electron guns.
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) 2009-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60519-7:2008 was approved by CENELEC as a European

Standard without any modification.
__________
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SIST EN 60519-7:2009
- 3 - EN 60519-7:2008
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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60050-841 2004 International electrotechnical vocabulary - - -
Part 841: Industrial electroheat

IEC 60204-1 (mod) 2005 Safety of machinery - Electrical equipment of EN 60204-1 2006

machines -
Part 1: General requirements
IEC 60364-4-43 - Low voltage electrical installations - - -
Part 4-43: Protection for safety - Protection
against overcurrent
IEC 60519-1 2003 Safety in electroheat installations - EN 60519-1 2003
Part 1: General requirements
Undated reference.
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SIST EN 60519-7:2009
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SIST EN 60519-7:2009
IEC 60519-7
Edition 2.0 2008-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheat installations –
Part 7: Particular requirements for installations with electron guns
Sécurité dans les installations électrothermiques –
Partie 7: Exigences particulières pour les installations comportant des canons à
électrons
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 25.180.10 ISBN 2-8318-9634-7
---------------------- Page: 7 ----------------------
SIST EN 60519-7:2009
– 2 – 60519-7 © IEC:2008
CONTENTS

FOREWORD...........................................................................................................................3

1 Scope...............................................................................................................................5

2 Normative references .......................................................................................................5

3 Terms and definitions .......................................................................................................5

4 Components of electron beam installations.......................................................................7

5 Types of electron guns .....................................................................................................7

6 Main risks.........................................................................................................................7

7 Earthing of high-voltage parts in gun chamber during maintenance ..................................8

7.1 Manual earthing device ...........................................................................................8

7.2 Mechanical earthing system ....................................................................................8

7.3 Automatic earthing system ......................................................................................8

8 High-voltage feeding ........................................................................................................8

8.1 High-voltage feeder cables ......................................................................................8

8.2 Return conductor.....................................................................................................9

8.3 Minimum distance between bare high-voltage components......................................9

9 Protection against electric shock ......................................................................................9

10 Protection against overcurrent and overvoltage ..............................................................10

10.1 General requirements............................................................................................10

10.2 High-voltage power supply ....................................................................................10

11 Equipotential bonding .....................................................................................................10

12 Control circuits and control functions ..............................................................................10

12.1 Control circuits ......................................................................................................10

12.2 Control functions ...................................................................................................10

13 Liquid cooling .................................................................................................................10

14 Risks caused by certain processes or components .........................................................11

14.1 Risk of fire.............................................................................................................11

14.2 Danger of explosion ..............................................................................................11

14.3 Environmental pollution .........................................................................................11

14.4 Health hazards ......................................................................................................11

14.5 Vacuum plant ........................................................................................................11

15 X-rays ............................................................................................................................12

16 Marking, labelling, technical documentation and instructions ..........................................12

16.1 Marking, labelling and technical documentation.....................................................12

16.2 Information on inspection and commissioning, and instructions for utilization

and maintenance of installations with electron guns ..............................................12

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SIST EN 60519-7:2009
60519-7 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN ELECTROHEAT INSTALLATIONS –
Part 7: Particular requirements for installations
with electron guns
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 60519-7 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 are as follows:

• the latest edition of IEC 60519-1 has been taken into account (the structure of clauses

was adapted to it as far as practicable);

• some definitions have been modified or brought into line with IEC 60050-841:2004;

• Clauses 4 and 5 were added;

• requirements for the earthing system were updated according to technical progress;

• the arrangement of the return conductor was changed to avoid earthing connections from

the process current as far as possible;
---------------------- Page: 9 ----------------------
SIST EN 60519-7:2009
– 4 – 60519-7 © IEC:2008

• possible risks caused by certain processes or components were described in Clause 14.

This part of IEC 60519 is to be used in conjunction with IEC 60519-1:2003. It is intended to

specify particular requirements for electroheating installations with electron guns.

The text of this standard is based on the following documents:
FDIS Report on voting
27/578/CDV 27/622/RVC

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 list of all parts of the IEC 60519 series, under the general title Safety in electroheat

installations, can be found on the IEC website.

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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SIST EN 60519-7:2009
60519-7 © IEC:2008 – 5 –
SAFETY IN ELECTROHEAT INSTALLATIONS –
Part 7: Particular requirements for installations
with electron guns
1 Scope

This part of IEC 60519 deals with safety of electroheat installations with electron guns. It

applies to all the electroheat applications with electron guns.

This standard, whilst prepared for electroheat installations with electron guns may, however,

also be used for non-thermal applications with electron guns and equipment employing glow

discharge systems, where applicable.
This standard applies also to high-voltage sources feeding electron guns.

All requirements of IEC 60519-1 apply. Additional requirements for installations covered by

this part of the standard are given in Clauses 6 to 16.
2 Normative references

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.

IEC 60050-841:2004, International Electrotechnical Vocabulary – Part 841: Industrial

electroheat

IEC 60204-1:2005, Safety of machinery – Electrical equipment of machines – Part 1: General

requirements

IEC 60364-4-43, Electrical installations of buildings – Part 4-43: Protection for safety –

Protection against overcurrent

IEC 60519-1:2003, Safety in electroheat installations – Part 1: General requirements

3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-841,

IEC 60519-1 and the following apply.
3.1
electron beam

electron flux emitted from one source (cathode or plasma) and moving along the exactly

determined tracks at very great velocities
[IEV 841-30-01, modified]
3.2
electron (beam) gun
system of generating, forming and accelerating one or more electron beams
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SIST EN 60519-7:2009
– 6 – 60519-7 © IEC:2008
[IEV 841-30-08, modified]
3.3
anode (of an electron gun)
electrode capable of educing and accelerating electrons from the medium of lower
conductivity
[IEV 841-22-31, modified]
3.4
cathode (of an electron gun)

electrode capable of emitting electrons from the medium of low conductivity and also of

receiving positive carriers, if necessary
[IEV 841-22-32, modified]
3.5
beam accelerating voltage
potential difference between the cathode and the
...

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