IEC 61000-4-12:2017

Electromagnetic Compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test

IEC 61000-4-12:2017 relates to the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, to ring waves occurring in low-voltage power, control and signal lines supplied by public and non-public networks.
The object of this document is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to ring waves. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.
It has the status of a basic EMC publication in accordance with IEC Guide 107.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of a mathematical modelling of ring wave waveform;
b) new Annex B on selection of generators and test levels;
c) new Annex C on explanatory notes;
d) new Annex D on measurement uncertainty;
e) addition of high speed CDN;
f) addition of a calibration procedure for CDN.

Compatibilité électromagnétique (CEM) - Partie 4-12: Techniques d'essai et de mesure - Essai d'immunité à l'onde sinusoïdale amortie

L’IEC 61000-4-12:2017 traite des méthodes d'essai des matériels électriques et électroniques dans leurs conditions d'exploitation et des exigences d'immunité aux ondes sinusoïdales fortement amorties se manifestant sur les alimentations basse tension ainsi que sur les lignes de commande et de signal raccordées aux réseaux publics ou privés.
Le présent document a pour objet d'établir une référence commune dans le but d'évaluer l’immunité des matériels électriques et électroniques soumis à des ondes sinusoïdales fortement amorties. La méthode d’essai documentée dans la présente partie de l’IEC 61000 décrit une méthode cohérente en vue d'évaluer l'immunité d'un matériel ou d'un système vis‑à-vis d'un phénomène défini.
Elle a le statut de publication fondamentale en CEM en accord avec le Guide 107 de l’IEC.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout d’une modélisation mathématique de forme d’onde sinusoïdale fortement amortie;
b) ajout d’une nouvelle Annexe B relative à la sélection des générateurs et des niveaux d’essai;
c) ajout d’une nouvelle Annexe C relative aux notes explicatives;
d) ajout d’une nouvelle Annexe D relative à l’incertitude de mesure;
e) ajout d’un RCD à grande vitesse;
f) ajout d’une procédure d’étalonnage pour le RCD.

General Information

• Status: Published
• Publication Date: 17-Jul-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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: 07-Aug-2017
• Completion Date: 18-Jul-2017

Relations

• Revises: IEC 61000-4-12:2006 - Electromagnetic compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61000-4-12 ®
Edition 3.0 2017-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –
Part 4-12: Testing and measurement techniques – Ring wave immunity test

IEC 61000-4-12:2017-07 RLV(en)

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.

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3, rue de Varembé Fax: [phone]
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Switzerland www.iec.ch
About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 61000-4-12 ®
Edition 3.0 2017-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –

Part 4-12: Testing and measurement techniques – Ring wave immunity test

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.20 ISBN 978-2-8322-4625-2

– 2 – IEC 61000-4-12:2017 RLV © IEC 2017
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope and object . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 11
4 General . 12
4.1 Description of the phenomenon . 12
4.2 Relevant parameters . 14
4.2.1 Repetition rate . 14
4.2.2 Phase angle . 14
5 Test levels . 14
6 Test equipment instrumentation . 15
6.1 Test Ring wave generator . 15
6.1.1 Ring wave generator circuit . 15
6.1.2 Impedance values . 15
6.1.3 Verification of the characteristics of the test generator .
6.1.3 Performance characteristics of the test ring wave generator . 16
6.1.4 Calibration of the ring wave generator . 17
6.2 Coupling/decoupling networks specifications . 18
6.2.1 Coupling/decoupling network for a.c./d.c. power supply ports .
6.2.2 Coupling/decoupling network for signals and control ports .
6.2.1 General . 19
6.2.2 Coupling/decoupling networks for AC/DC power port rated up to 63 A
per line . 20
6.2.3 Coupling/decoupling networks for interconnection lines . 23
6.3 Calibration of coupling/decoupling networks . 26
6.3.1 General . 26
6.3.2 Calibration of CDNs for AC/DC power port rated up to 63 A per line . 26
6.3.3 Calibration of CDNs for interconnection lines . 27
7 Test setup . 31
7.1 Test of power supply ports .
7.2 Test of input/output ports .
7.3 Test of communication ports .
7.4 Earthing connections .
7.5 Equipment under test .
7.6 Coupling/decoupling networks .
7.1 Test equipment . 31
7.2 Verification of the test instrumentation . 35
7.3 Test setup for ring waves applied to EUT power ports . 35
7.4 Test setup for ring waves applied to unshielded unsymmetrical
interconnection lines . 36
7.5 Test setup for ring waves applied to unshielded symmetrical interconnection
lines . 36
7.6 Test setup for ring waves applied to shielded lines . 36

7.7 Protective earth connection . 37
8 Test procedure . 38
8.1 General . 38
8.2 Laboratory reference conditions . 38
8.2.1 Climatic conditions . 38
8.2.2 Electromagnetic conditions . 38
8.3 Execution of the test . 38
9 Evaluation of test results . 41
10 Test report . 41
Annex A (informative) Information on test levels for the ring wave .
Annex A (informative) Information on electromagnetic environments, installation
classes and test levels . 50
Annex B (informative) Selection of generators and test levels . 52
B.1 General . 52
B.2 The classification of environments . 52
B.3 The definition of port types. 52
B.4 Selection of the test levels . 53
Annex C (informative) Explanatory notes . 55
C.1 Different source impedance . 55
C.2 Application of the tests . 55
C.2.1 Equipment level immunity . 55
C.2.2 System level immunity . 55
Annex D (informative) Measurement uncertainty (MU) considerations . 56
D.1 General . 56
D.2 Legend for ring wave parameters . 56
D.3 Uncertainty contributors to the ring wave measurement uncertainty . 57
D.4 Uncertainty of the generator output voltage and current measurement . 57
D.4.1 General . 57
D.4.2 Rise time of the ring wave . 57
D.4.3 Peak of the ring wave . 59
D.4.4 Further MU contributions to time measurements . 60
D.4.5 Rise time of the step response and bandwidth of the frequency
response of the measuring system . 60
D.4.6 Impulse peak and width distortion due to the limited bandwidth of the
measuring system . 61
D.5 Application of uncertainties in the ring waveform compliance criterion . 62
Bibliography . 63

Figure 1 – Waveform of the ring wave (open-circuit voltage and short-circuit current) . 13
Figure 2 – Example of schematic circuit of the ring wave generator . 15
Figure 3 – Example of test set-up for table-top equipment using the ground
reference plane .
Figure 4 – Example of test set-up for floor-standing equipment using the ground
reference plane .
Figure 5 – AC/DC power supply port, single phase, line-to-line test .
Figure 6 – AC/DC power supply port, single phase, line-to-ground test .
Figure 7 – Example of test setup for capacitive coupling on a.c. lines (3 phases) –
line L3 to line L1 coupling .

– 4 – IEC 61000-4-12:2017 RLV © IEC 2017
Figure 8 – Example of test setup for capacitive coupling on a.c. lines (3 phases) –
line L3 to ground coupling .
Figure 9 – Example of test setup for unshielded unsymmetrical interco
...

IEC 61000-4-12 ®
Edition 3.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-12: Testing and measurement techniques – Ring wave immunity test

Compatibilité électromagnétique (CEM) –
Partie 4-12: Techniques d'essai et de mesure – Essai d'immunité à l’onde
sinusoïdale fortement amortie
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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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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IEC 61000-4-12 ®
Edition 3.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Electromagnetic compatibility (EMC) –

Part 4-12: Testing and measurement techniques – Ring wave immunity test

Compatibilité électromagnétique (CEM) –

Partie 4-12: Techniques d'essai et de mesure – Essai d'immunité à l’onde

sinusoïdale fortement amortie
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-4556-9

– 2 – IEC 61000-4-12:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 10
4 General . 10
4.1 Description of the phenomenon . 10
4.2 Relevant parameters . 12
4.2.1 Repetition rate . 12
4.2.2 Phase angle . 12
5 Test levels . 13
6 Test instrumentation . 13
6.1 Ring wave generator . 13
6.1.1 Ring wave generator circuit . 13
6.1.2 Impedance values . 14
6.1.3 Performance characteristics of the ring wave generator . 14
6.1.4 Calibration of the ring wave generator . 15
6.2 Coupling/decoupling networks . 15
6.2.1 General . 15
6.2.2 Coupling/decoupling networks for AC/DC power port rated up to 63 A
per line . 16
6.2.3 Coupling/decoupling networks for interconnection lines . 19
6.3 Calibration of coupling/decoupling networks . 22
6.3.1 General . 22
6.3.2 Calibration of CDNs for AC/DC power port rated up to 63 A per line . 22
6.3.3 Calibration of CDNs for interconnection lines . 23
7 Test setup . 26
7.1 Test equipment . 26
7.2 Verification of the test instrumentation . 27
7.3 Test setup for ring waves applied to EUT power ports . 27
7.4 Test setup for ring waves applied to unshielded unsymmetrical
interconnection lines . 28
7.5 Test setup for ring waves applied to unshielded symmetrical interconnection
lines . 28
7.6 Test setup for ring waves applied to shielded lines . 28
7.7 Protective earth connection . 29
8 Test procedure . 30
8.1 General . 30
8.2 Laboratory reference conditions . 30
8.2.1 Climatic conditions . 30
8.2.2 Electromagnetic conditions . 30
8.3 Execution of the test . 30
9 Evaluation of test results . 31

10 Test report . 32
Annex A (informative) Information on electromagnetic environments, installation
classes and test levels . 33
Annex B (informative) Selection of generators and test levels . 35
B.1 General . 35
B.2 The classification of environments . 35
B.3 The definition of port types. 35
B.4 Selection of the test levels . 36
Annex C (informative) Explanatory notes . 38
C.1 Different source impedance . 38
C.2 Application of the tests . 38
C.2.1 Equipment level immunity . 38
C.2.2 System level immunity . 38
Annex D (informative) Measurement uncertainty (MU) considerations . 39
D.1 General . 39
D.2 Legend for ring wave parameters . 39
D.3 Uncertainty contributors to the ring wave measurement uncertainty . 40
D.4 Uncertainty of the generator output voltage and current measurement . 40
D.4.1 General . 40
D.4.2 Rise time of the ring wave . 40
D.4.3 Peak of the ring wave . 42
D.4.4 Further MU contributions to time measurements .
...