IEC 61000-4-9:2016

Electromagnetic compatibility (EMC) - Part 4-9: Testing and measurement techniques - Impulse magnetic field immunity test

IEC 61000-4-9:2016 specifies the immunity requirements, test methods, and range of recommended test levels for equipment subjected to impulse magnetic disturbances mainly encountered in industrial installations, power plants, railway installations, and medium voltage and high voltage sub-stations. This second edition cancels and replaces the first edition published in 1993 and Amendment 1:2000. This edition constitutes a technical revision.

Compatibilité électromagnétique (CEM) - Partie 4-9: Techniques d'essai et de mesure - Essai d'immunité au champ magnétique impulsionnel

L'IEC 61000-4-9:2016 spécifie les exigences en matière d'immunité, les méthodes d'essai et la plage des niveaux d'essai recommandés des équipements soumis aux perturbations magnétiques impulsionnelles, principalement dans les installations industrielles, centrales électriques, installations ferroviaires, et postes moyenne et haute tension. Cette deuxième édition annule et remplace la première édition parue en 1993 et l'Amendement 1:2000. Cette édition constitue une révision technique.

General Information

• Status: Published
• Publication Date: 12-Jul-2016
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.080.10 - Insulators
• ICS: 29.240.20 - Power transmission and distribution lines
• ICS: 33.100.20 - Immunity
• Technical Committee: SC 77B - High frequency phenomena
• Drafting Committee: MT 12 - TC 77/SC 77B/MT 12
• Current Stage: PPUB - Publication issued
• Start Date: 15-Sep-2016
• Completion Date: 13-Jul-2016

Relations

• Revises: IEC 61000-4-9:1993 - Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 9: Pulse magnetic field immunity test. Basic EMC Publication
• Effective Date: 05-Sep-2023
• Revises: IEC 61000-4-9:1993/AMD1:2000 - Amendment 1 - Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 9: Pulse magnetic field immunity test. Basic EMC Publication
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61000-4-9 ®
Edition 2.0 2016-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –
Part 4-9: Testing and measurement techniques – Pulse Impulse magnetic field
immunity test
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.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland 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.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 61000-4-9 ®
Edition 2.0 2016-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –

Part 4-9: Testing and measurement techniques – Pulse Impulse magnetic field

immunity test
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.20 ISBN 978-2-8322-3533-1

– 2 – IEC 61000-4-9:2016 RLV  IEC 2016
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope and object . 9
2 Normative references. 9
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms . 12
4 General . 12
5 Test levels . 13
6 Test equipment .
6 Test instrumentation . 17
6.1 General . 17
6.2 Combination wave generator . 17
6.2.1 General . 17
6.2.2 Performance characteristics of the generator . 18
6.2.3 Calibration of the generator . 19
6.3 Induction coil. 19
6.3.1 Field distribution . 19
6.3.2 Characteristics of the standard induction coils of 1 m × 1 m and
1 m × 2,6 m . 20
6.4 Calibration of the test system . 20
7 Test setup . 21
7.2 Verification of the test instrumentation . 23
7.3 Test setup for impulse magnetic field applied to a table-top EUT . 23
7.4 Test setup for impulse magnetic field applied to a floor standing EUT . 24
7.5 Test setup for impulse magnetic field applied in-situ . 25
7.1 Test equipment . 21
8 Test procedure . 26
8.1 General . 26
8.2 Laboratory reference conditions . 26
8.2.1 Climatic conditions . 26
8.2.2 Electromagnetic conditions . 26
8.3 Carrying out Execution of the test . 27
9 Evaluation of test results and test report . 28
10 Test report. 29
Annex A (normative informative) Characteristics of non standard induction coils
calibration method . 33
A.1 General . 33
A.2 Determination of the coil factor . 33
A.2.1 General . 33
A.2.2 Coil factor measurement . 33
A.2.3 Coil factor calculation . 34
A.3 Magnetic field measurement . 34
A.4 Verification of non standard induction coils . 35
Annex B (normative) Characteristics of the induction coils .

Annex B (informative) Information on the field distribution of standard induction coils . 42
B.1 General . 42
B.2 1 m × 1 m induction coil . 42
B.3 1 m × 2,6 m induction coil with reference ground plane . 43
B.4 1 m × 2,6 m induction coil without reference ground plane . 45
Annex C (informative) Selection of the test levels . 46
Annex D (informative) Information on magnetic field strength .
Annex D (informative) Measurement uncertainty (MU) considerations . 49
D.1 General . 49
D.2 Legend . 49
D.3 Uncertainty contributors to the surge current and to the surge magnetic field
measurement uncertainty . 50
D.4 Uncertainty of surge current and surge magnetic field calibration . 50
D.4.1 General . 50
D.4.2 Front time of the surge current . 50
D.4.3 Peak of the surge current and magnetic field . 52
D.4.4 Duration of the current impulse . 53
D.4.5 Further MU contributions to time measurements . 54
D.4.6 Rise time distortion due to the limited bandwidth of the measuring
system . 54
D.4.7 Impulse peak and width distortion due to the limited bandwidth of the
measuring system . 55
D.5 Application of uncertainties in the surge generator compliance criterion . 56
Annex E (informative) Mathematical modelling of surge current waveforms . 57
E.1 General . 57
E.2 Normalized time domain current surge (8/20 µs) . 57
Annex F (informative) Characteristics using two standard induction coils . 60
F.1 General . 60
F.2 Particular requirements for calibration . 60
F.3 Field distribution of the double induction coil arrangement . 61
Annex G (informative) 3D numerical simulations . 63
G.1 General . 63
G.2 Simulations . 63
G.3 Comments . 63
Bibliography . 71

Figure 1 – Example of application of the test field by the immersion method .
Figure 1 – Simplified circuit diagram of the combination wave generator . 18
Figure 2 – Current waveform of the test generator for pulse magnetic field (6,4/16 µs) .
Figure 2 – Waveform of short-circuit current (8/20 µs) at the output of the generator
with the 18 µF capacitor in series . 19
Figure 3 – Schematic circuit of the test generator for pulse magnetic field (6,4/16 µs) .
Figure 3 – Example of a current measurement of standard induction coils . 20
Figure 4 – Example of test set-up for table-top equipment .
Figure 4 – Example of test setup for table-top equipment showing the vertical
orthogonal plane . 24

– 4 – IEC 61000-4-9:2016 RLV © IEC 2016
Figure 5 – Example of test set-up for floor-standing equipment .
Figure 5 – Example of test setup for floor standing equipment showing the horizontal
orthogonal plane . 24
Figure 6 – Example of investigation of susceptibility to magnetic field by
the proximity method .
Figure
...

IEC 61000-4-9 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-9: Testing and measurement techniques – Impulse magnetic field
immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-9: Techniques d'essai et de mesure – Essai d'immunité au champ
magnétique impulsionnel
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 l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland 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.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) 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 IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 15
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC
65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte,
et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les
publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées.
antérieures extraites des publications des CE 37, 77, 86 et

CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues.
Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email.
publication ou si vous avez des questions contactez-nous:

[e-mail].
IEC 61000-4-9 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Electromagnetic compatibility (EMC) –

Part 4-9: Testing and measurement techniques – Impulse magnetic field

immunity test
Compatibilité électromagnétique (CEM) –

Partie 4-9: Techniques d'essai et de mesure – Essai d'immunité au champ

magnétique impulsionnel
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-3502-7

– 2 – IEC 61000-4-9:2016  IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope and object . 8
2 Normative references. 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 10
4 General . 11
5 Test levels . 11
6 Test instrumentation . 12
6.1 General . 12
6.2 Combination wave generator . 12
6.2.1 General . 12
6.2.2 Performance characteristics of the generator . 13
6.2.3 Calibration of the generator . 13
6.3 Induction coil. 14
6.3.1 Field distribution . 14
6.3.2 Characteristics of the standard induction coils of 1 m × 1 m and 1
m × 2,6 m . 14
6.4 Calibration of the test system . 14
7 Test setup . 15
7.1 Test equipment . 15
7.2 Verification of the test instrumentation . 16
7.3 Test setup for impulse magnetic field applied to a table-top EUT . 16
7.4 Test setup for impulse magnetic field applied to a floor standing EUT . 17
7.5 Test setup for impulse magnetic field applied in-situ . 18
8 Test procedure . 19
8.1 General . 19
8.2 Laboratory reference conditions . 19
8.2.1 Climatic conditions . 19
8.2.2 Electromagnetic conditions . 19
8.3 Execution of the test . 19
9 Evaluation of test results . 20
10 Test report. 20
Annex A (informative) Characteristics of non standard induction coils . 22
A.1 General . 22
A.2 Determination of the coil factor . 22
A.2.1 General . 22
A.2.2 Coil factor measurement . 22
A.2.3 Coil factor calculation . 23
A.3 Magnetic field measurement . 23
A.4 Verification of non standard induction coils . 24
Annex B (informative) Information on the field distribution of standard induction coils . 25
B.1 General . 25
B.2 1 m × 1 m induction coil . 25

B.3 1 m × 2,6 m induction coil with reference ground plane . 26
B.4 1 m × 2,6 m induction coil without reference ground plane . 28
Annex C (informative) Selection of the test levels . 29
Annex D (informative) Measurement uncertainty (MU) considerations . 31
D.1 General . 31
D.2 Legend . 31
D.3 Uncertainty contributors to the surge current and to the surge magnetic field
measurement uncertainty . 32
D.4 Uncertainty of surge current and surge magnetic field calibration . 32
D.4.1 General . 32
D.4.2 Front time of the surge current . 32
D.4.3 Peak of the surge current and magnetic field . 34
D.4.4 Duration of the current impulse . 35
D.4.5 Further MU contributions to time measurements . 36
D.4.6 Rise time distortion due to the limited bandwidth of the measuring
system . 36
D.4.7 Impulse peak and width distortion due to the limited bandwidth of the
measuring system . 37
D.5 Application of uncertainties in the surge generator compliance criterion . 38
Annex E (informative) Mathematical modelling of surge current waveforms . 39
E.1 General . 39
E.2 Normalized time domain current surge (8/20 µs) . 39
Annex F (informative) Characteristics using two standard induction coils . 42
F.1
...