EN 61000-4-31:2017

SLOVENSKI STANDARD
01-april-2017
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Electromagnetic Compatibility (EMC) - Part 4-31: Testing and measurement techniques -
AC mains ports broadband conducted disturbance immunity test
Compatibilité électromagnétique (CEM) - Partie 4-31: Techniques d'essai et de mesure -
Essai d'immunité aux perturbations conduites à large bande sur les accès d'alimentation
secteur en courant alternatif
Ta slovenski standard je istoveten z: EN 61000-4-31:2017
ICS:
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61000-4-31

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2017
ICS 33.100.20
English Version
Electromagnetic compatibility (EMC) -
Part 4-31: Testing and measurement techniques - AC mains
ports broadband conducted disturbance immunity test
(IEC 61000-4-31:2016)
Compatibilité électromagnétique (CEM) -  Elektromagnetische Verträglichkeit (EMV) -
Partie 4-31: Techniques d'essai et de mesure - Essai Teil 4-31: Prüf- und Messverfahren - Prüfung der
d'immunité aux perturbations conduites à large bande sur Störfestigkeit gegen leitungsgeführte breitbandige
les accès d'alimentation secteur en courant alternative Störgrößen an Wechselstrom-Netzanschlüssen
(IEC 61000-4-31:2016) (IEC 61000-4-31:2016)
This European Standard was approved by CENELEC on 2016-09-01. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61000-4-31:2017 E
European foreword
The text of document 77B/758/FDIS, future edition 1 of IEC 61000-4-31, prepared by SC 77B “High
frequency phenomena” of IEC/TC 77 “Electromagnetic compatibility" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 61000-4-31:2017.

The following dates are fixed:
(dop) 2017-08-24
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-02-24
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61000-4-31:2016 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:

CISPR 16-1-2 NOTE Harmonized as EN 55016-1-2.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60050-161 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 161: Electromagnetic compatibility
IEC 61000-4-6 2013 Electromagnetic compatibility (EMC) - EN 61000-4-6 2014
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-4-31 ®
Edition 1.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Electromagnetic compatibility (EMC) –

Part 4-31: Testing and measurement techniques – AC mains ports broadband

conducted disturbance immunity test

Compatibilité électromagnétique (CEM) –

Partie 4-31: Techniques d'essai et de mesure – Essai d'immunité aux

perturbations conduites à large bande sur les accès d'alimentation secteur en

courant alternatif
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-3564-5

– 2 – IEC 61000-4-31:2016 © IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope and object . 8
2 Normative references. 8
3 Terms and definitions . 8
4 General . 10
5 Test levels . 11
6 Test equipment and level setting procedures . 13
6.1 Test generator . 13
6.2 Coupling and decoupling devices . 14
6.2.1 General . 14
6.2.2 CDND for the port under test . 15
6.2.3 Coupling/decoupling networks (CDNs) for cables that are not under test . 15
6.3 Verification of the test systems . 17
6.3.1 General . 17
6.3.2 Verification procedure of test generator flatness . 17
6.3.3 Verification procedure of the insertion loss of the CDND using
transformer jigs . 18
6.3.4 Insertion loss of the injection coupling system . 20
6.4 Test level setting procedure . 21
6.4.1 General . 21
6.4.2 Setting of the output level at the EUT port of the CDND . 21
7 Test set-up and injection methods . 22
7.1 Test set-up. 22
7.2 EUT comprised of a single unit . 22
7.3 EUT comprised of several units . 23
7.4 CDN and CDND termination application . 25
8 Test procedure . 26
9 Evaluation of the test results . 27
10 Test report. 27
Annex A (informative) Measurement uncertainty of the power spectral density test
level . 29
A.1 General . 29
A.2 Uncertainty budgets for test methods . 29
A.2.1 General symbols . 29
A.2.2 Definition of the measurand . 29
A.2.3 MU contributors of the measurand . 29
A.2.4 Input quantities and calculation examples for expanded uncertainty . 30
A.3 Expression of the calculated measurement uncertainty and its application . 31
Annex B (informative) Rationale for the selection of the preferred broadband source –
Information on test signal generation . 33
B.1 General . 33
B.2 Principles of band-limited broadband signal generation . 33
B.2.1 General . 33
B.2.2 (True) random noise generation. 33

IEC 61000-4-31:2016 © IEC 2016 – 3 –
B.2.3 Pseudo-random noise sequence . 34
B.2.4 Impulse . 38
B.2.5 OFDM scheme . 40
B.3 Selection of the preferred broadband source . 42
Bibliography . 43

Figure 1 – Immunity test to broadband conducted disturbances . 11
Figure 2 – Example of voltage spectrum of a broadband test signal measured with a
120 kHz resolution bandwidth . 13
Figure 3 – Principle of the test generator . 14
Figure 4 – Example of simplified diagram for the circuit of CDND . 15
Figure 5 – Example of coupling and decoupling network for power ports other than AC
mains . 16
Figure 6 – Test set-up regarding test generator flatness and typical test signal . 18
Figure 7 – Typical circuit diagram of the transformer jig showing 50 Ω side and 100 Ω
side of the transformer and 2 pcs 0,1 µF coupling capacitors . 18
Figure 8 – Transformer jig specifications . 20
Figure 9 – Example of the set-up geometry to verify the insertion loss of the injection
coupling system . 20
Figure 10 – Set-up for the evaluation of the total insertion loss of the injection
coupling system . 21
Figure 11 – Set-up for level setting . 22
Figure 12 – Example of test set-up for an EUT comprised of a single unit (top view) . 23
Figure 13 – Example of a test set-up for an EUT comprised of several uni
...