IEC 61000-4-8:2009

Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test

IEC 61000-4-8:2009 relates to the immunity requirements of equipment, only under operational conditions, to magnetic disturbances at power frequencies 50 Hz and 60 Hz related to:
- residential and commercial locations;
- industrial installations and power plants;
- medium voltage and high voltage sub-stations. The applicability of IEC 61000-4-8:2009 to equipment installed in different locations is determined by the presence of the phenomenon, as specified in Clause 4. This standard does not consider disturbances due to capacitive or inductive coupling in cables or other parts of the field installation. Other IEC standards dealing with conducted disturbances cover these aspects. The object of IEC 61000-4-8:2009 is to establish a common and reproducible basis for evaluating the performance of electrical and electronic equipment for household, commercial and industrial applications when subjected to magnetic fields at power frequency (continuous and short duration field). IEC 61000-4-8:2009 defines:
- recommended test levels;
- test equipment;
- test set-up;
- test procedure.
This second edition cancels and replaces the first edition published in 1993 and its Amendment 1 (2000). It forms a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the scope is extended in order to cover 60 Hz. Characteristics, performance and verification of the test generator and related inductive coils are revised. Modifications are also introduced in the test set-up (GRP) and test procedure. IEC 61000-4-8:2009 has the status of a basic EMC publication in accordance with IEC Guide 107.

Compatibilité électromagnétique (CEM) - Partie 4-8: Techniques d'essai et de mesure - Essai d'immunité au champ magnétique à la fréquence du réseau

IEC 61000-4-8:2009 traite des exigences en matière d'immunité des matériels, uniquement dans les conditions d'utilisation, contre les perturbations magnétiques à des fréquences de 50 Hz et 60 Hz relatives aux:
- locaux résidentiels et commerciaux;
- installations industrielles et centrales électriques;
- postes moyenne et haute tension. Les conditions d'application de la CEI 61000-4-8:2009 aux matériels installés dans les différents secteurs sont déterminées par la présence du phénomène dans les conditions spécifiées dans l'article 4. La présente norme ne traite pas des perturbations engendrées par le couplage capacitif ou inductif sur les câbles ou autres parties de l'installation. D'autres normes CEI traitant des perturbations conduites couvrent ces aspects. La CEI 61000-4-8:2009 a pour objet d'établir une base commune et reproductible pour évaluer la performance des matériels électriques et électroniques à vocation domestique, commerciale ou industrielle lorsqu'ils sont soumis à des champs magnétiques à la fréquence du réseau (champs permanents et courte durée). La CEI 61000-4-8:2009 définit:
- les niveaux recommandés d'essai;
- le matériel d'essai;
- l'installation d'essai;
- la procédure d'essai. Cette deuxième édition annule et remplace la première édition publiée en 1993 et son amendement 1 (2000). Elle constitue une révision technique. La présente édition inclut les modification techniques majeures suivantes par rapport à la première édition: le domaine d'application est étendu de façon à couvrir le 60 Hz. Les caractéristiques, les performances et la vérification du générateur d'essai et de la bobine d'induction associée sont révisées. Des modifications sont aussi introduites dans l'installation d'essai (PS) et dans la procédure d'essai. La CEI 61000-4-8:2009 a le statut de publication fondamentale en CEM en accord avec le Guide 107 de la CEI.

General Information

• Status: Published
• Publication Date: 02-Sep-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.100.20 - Immunity
• Technical Committee: SC 77A - EMC - Low frequency phenomena
• Drafting Committee: WG 6 - TC 77/SC 77A/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 30-Sep-2009
• Completion Date: 03-Sep-2009

Relations

• Revises: IEC 61000-4-8:1993/AMD1:2000 - Amendment 1 - Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 8: Power frequency magnetic field immunity test. Basic EMC Publication
• Effective Date: 05-Sep-2023
• Revises: IEC 61000-4-8:1993 - Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 8: Power frequency magnetic field immunity test. Basic EMC Publication
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61000-4-8 ®
Edition 2.0 2009-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-8: Testing and measurement techniques – Power frequency magnetic field
immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-8: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique à la fréquence du réseau

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
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: 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.
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It also gives information on projects, withdrawn and replaced publications.
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on-line and also by email.
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The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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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.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
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texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
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publications parues. Disponible en-ligne et aussi par email.
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Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
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Service clients ou contactez-nous:
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IEC 61000-4-8 ®
Edition 2.0 2009-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-8: Testing and measurement techniques – Power frequency magnetic
field immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-8: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique à la fréquence du réseau

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 33.100.20 ISBN 978-2-88910-378-2
– 2 – 61000-4-8 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 General .8
5 Test levels.9
6 Test equipment.10
6.1 General .10
6.2 Test generator.10
6.2.1 Current source.10
6.2.2 Characteristics and performances of the test generator for different
inductive coils.10
6.2.3 Verification of the characteristics of the test generator .11
6.3 Inductive coil .12
6.3.1 Field distribution.12
6.3.2 Characteristics of the inductive standard coils 1 m × 1 m and
1 m × 2,6 m .12
6.3.3 Characteristics of the inductive coils for table top and floor standing
equipment .12
6.3.4 Measurement of the inductive coil factor.13
6.4 Test and auxiliary instrumentation .13
6.4.1 Test instrumentation .13
6.4.2 Auxiliary instrumentation .14
7 Test set-up .14
7.1 Test set-up components .14
7.2 Ground (reference) plane for floor standing equipment .14
7.3 Equipment under test .14
7.4 Test generator.15
7.5 Inductive coil .15
8 Test procedure .15
8.1 General .15
8.2 Laboratory reference conditions .15
8.2.1 General .15
8.2.2 Climatic conditions .15
8.2.3 Electromagnetic conditions .16
8.3 Carrying out the test.16
9 Evaluation of the test results .17
10 Test report.17
Annex A (normative) Inductive coil calibration method .22
Annex B (normative) Characteristics of the inductive coils .23
Annex C (informative) Selection of the test levels .29
Annex D (informative) Information on power frequency magnetic field strength .31
Bibliography.33

61000-4-8 © IEC:2009 – 3 –
Figure 1 – Example of application of the test field by the immersion method .18
Figure 2 – Example of schematic circuit of the test generator for power frequency
magnetic field .18
Figure 3 – Example of test set-up for table-top equipment .19
Figure 4 – Calibration of the standard coils .19
Figure 5 – Example of test set-up for floor-standing equipment.20
Figure 6 – Example of investigation of susceptibility to magnetic field by the proximity
method with the 1 m × 1 m inductive coil.20
Figure 7 – Illustration of Helmholtz coils .21
Figure B.1 – Characteristics of the field generated by a square inductive coil (1 m
side) in its plane .25
Figure B.2 – 3 dB area of the field generated by a square inductive coil (1 m side) in its
plane .25
Figure B.3 – 3 dB area of the field generated by a square inductive coil (1 m side) in
the mean orthogonal plane (component orthogonal to the plane of the coil) .26
Figure B.4 – 3 dB area of the field generated by two square inductive coils (1 m side)
0,6 m spaced, in the mean orthogonal plane (component orthogonal to the plane of
the coils).26
Figure B.5 – 3 dB area of the field generated by two square inductive coils (1 m side)
0,8 m spaced, in the mean orthogonal plane (component orthogonal to the plane of
the coils).27
Figure B.6 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
in its plane .27
Figure B.7 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
in its plane (ground plane as a side of the inductive coil) .28
Figure B.8 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
with ground plane, in the mean orthogonal plane (component orthogonal to the plane of
the coil) .28

Table 1 – Test levels for continuous field .9
Table 2 – Test levels for short duration: 1 s to 3 s.10
Table 3 – Specification of the generator for different inductive coils .11
Table 4 – Verification parameter for the different inductive coils .11
Table D.1 – Values of the maximum magnetic field produced by household appliances
(results of the measurements of 100 different devices of 25 basic types) .31
Table D.2 – Values of the magnetic field generated by a 400 kV line .31
Table D.3 – Values of the magnetic field in
...

IEC 61000-4-8 ®
Edition 2.0 2009-09
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Electromagnetic compatibility (EMC) –
Part 4-8: Testing and measurement techniques – Power frequency magnetic field
immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-8: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique à la fréquence du réseau

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
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: 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.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
 IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
 Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
 Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
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.
 Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
 Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
 Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
 Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 61000-4-8 ®
Edition 2.0 2009-09
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Electromagnetic compatibility (EMC) –
Part 4-8: Testing and measurement techniques – Power frequency magnetic
field immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-8: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique à la fréquence du réseau

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-88910-378-2
IEC 61000-4-8 ®
Edition 2.0 2009-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-8: Testing and measurement techniques – Power frequency magnetic field
immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-8: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique à la fréquence du réseau

– 2 – 61000-4-8 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 General .8
5 Test levels.9
6 Test equipment.10
6.1 General .10
6.2 Test generator.10
6.2.1 Current source.10
6.2.2 Characteristics and performances of the test generator for different
inductive coils.10
6.2.3 Verification of the characteristics of the test generator .11
6.3 Inductive coil .12
6.3.1 Field distribution.12
6.3.2 Characteristics of the inductive standard coils 1 m × 1 m and
1 m × 2,6 m .12
6.3.3 Characteristics of the inductive coils for table top and floor standing
equipment .12
6.3.4 Measurement of the inductive coil factor.13
6.4 Test and auxiliary instrumentation .13
6.4.1 Test instrumentation .13
6.4.2 Auxiliary instrumentation .14
7 Test set-up .14
7.1 Test set-up components .14
7.2 Ground (reference) plane for floor standing equipment .14
7.3 Equipment under test .14
7.4 Test generator.15
7.5 Inductive coil .15
8 Test procedure .15
8.1 General .15
8.2 Laboratory reference conditions .15
8.2.1 General .15
8.2.2 Climatic conditions .15
8.2.3 Electromagnetic conditions .16
8.3 Carrying out the test.16
9 Evaluation of the test results .17
10 Test report.17
Annex A (normative) Inductive coil calibration method .22
Annex B (normative) Characteristics of the inductive coils .23
Annex C (informative) Selection of the test levels .29
Annex D (informative) Information on power frequency magnetic field strength .31
Bibliography.33

61000-4-8 © IEC:2009 – 3 –
Figure 1 – Example of application of the test field by the immersion method .18
Figure 2 – Example of schematic circuit of the test generator for power frequency
magnetic field .18
Figure 3 – Example of test set-up for table-top equipment .19
Figure 4 – Calibration of the standard coils .19
Figure 5 – Example of test set-up for floor-standing equipment.20
Figure 6 – Example of investigation of susceptibility to magnetic field by the proximity
method with the 1 m × 1 m inductive coil.20
Figure 7 – Illustration of Helmholtz coils .21
Figure B.1 – Characteristics of the field generated by a square inductive coil (1 m
side) in its plane .25
Figure B.2 – 3 dB area of the field generated by a square inductive coil (1 m side) in its
plane .25
Figure B.3 – 3 dB area of the field generated by a square inductive coil (1 m side) in
the mean orthogonal plane (component orthogonal to the plane of the coil) .26
Figure B.4 – 3 dB area of the field generated by two square inductive coils (1 m side)
0,6 m spaced, in the mean orthogonal plane (component orthogonal to the plane of
the coils).26
Figure B.5 – 3 dB area of the field generated by two square inductive coils (1 m side)
0,8 m spaced, in the mean orthogonal plane (component orthogonal to the plane of
the coils).27
Figure B.6 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
in its plane .27
Figure B.7 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
in its plane (ground plane as a side of the inductive coil) .28
Figure B.8 – 3 dB area of the field generated by a rectangular inductive coil (1 m × 2,6 m)
with ground plane, in the mean orthogonal plane (component orthogonal to the plane of
the coil) .28

Table 1 – Test levels for continuous field .9
Table 2 – Test levels for short duration: 1 s to 3 s.
...