EN IEC 61000-4-11:2020
(Main)Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase
Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase
IEC 61000-4-11:2020 is available as IEC 61000-4-11:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61000-4-11:2020 defines the immunity test methods and range of preferred test levels for electrical and electronic equipment connected to low-voltage power supply networks for voltage dips, short interruptions, and voltage variations. This document applies to electrical and electronic equipment having a rated input current not exceeding 16 A per phase, for connection to 50 Hz or 60 Hz AC networks. It does not apply to electrical and electronic equipment for connection to 400 Hz AC networks. Tests for these networks will be covered by future IEC documents. The object of this document is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to voltage dips, short interruptions and voltage variations. NOTE 1 Voltage fluctuation immunity tests are covered by IEC 61000-4-14. The test method documented in this document describes a consistent method to assess the immunity of equipment or a system against a defined phenomenon. NOTE 2 As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the IEC. As also stated in Guide 107, the IEC product committees are responsible for determining whether this immunity test standard should be applied or not, and, if applied, they are responsible for defining the appropriate test levels. Technical committee 77 and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular immunity tests for their products. This third edition cancels and replaces the second edition published in 2004 and Amendment 1:2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - rise time and fall time of transients are now defined terms in Clause 3; - the origin of voltage dips and short interruptions is now stated in Clause 4. Keywords: immunity test methods, low-voltage power supply networks
Elektromagnetische Verträglichkeit (EMV) - Teil 4-11: Prüf- und Messverfahren - Prüfungen der Störfestigkeit gegen Spannungseinbrüche, Kurzzeitunterbrechungen und Spannungsschwankungen für Geräte mit einem Eingangsstrom bis zu und einschließlich 16 A je Leiter
Compatibilité électromagnétique (CEM) - Partie 4-11: Techniques d'essai et de mesure - Essais d'immunité aux creux de tension, coupures brèves et variations de tension pour les appareils à courant d’entrée inférieur ou égal à 16 A par phase
IEC 61000-4-11:2020 est disponible sous forme de IEC 61000-4-11:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 61000-4-11:2020 définit les méthodes d'essai d'immunité ainsi que la plage des niveaux d'essais préférentiels pour les matériels électriques et électroniques connectés à des réseaux d'alimentation à basse tension pour les creux de tension, les coupures brèves et les variations de tension. Le présent document s’applique aux matériels électriques et électroniques dont le courant assigné d’entrée ne dépasse pas 16 A par phase et destinés à être reliés à des réseaux électriques à courant alternatif de 50 Hz ou 60 Hz. Il ne s'applique pas aux matériels électriques et électroniques destinés à être reliés à des réseaux électriques à courant alternatif de 400 Hz. Les essais pour ces réseaux seront traités dans des documents IEC à venir. Le but du présent document est d'établir une référence commune pour l'évaluation de l'immunité des matériels électriques et électroniques soumis à des creux de tension, à des coupures brèves et à des variations de tension. NOTE 1 Les essais d’immunité aux fluctuations de tension sont traités dans l’IEC 61000-4-14. La méthode d’essai décrite dans le présent document détaille une méthode sans faille pour évaluer l’immunité d’un matériel ou d’un système à un phénomène prédéfini. NOTE 2 Comme cela est décrit dans le Guide 107 de l’IEC, ce document est une publication fondamentale en CEM destinée à l’usage des comités de produits de l’IEC. Comme cela est également mentionné dans le Guide 107, les comités de produits de l’IEC sont chargés de décider s’il convient d’utiliser ou non cette norme d’essai d’immunité et, si elle est utilisée, les comités sont responsables de la définition des niveaux d’essai appropriés. Le comité d’études 77 et ses sous-comités sont prêts à coopérer avec les comités de produits pour l’évaluation de la pertinence des essais particuliers d’immunité pour leurs produits. Cette troisième édition annule et remplace la deuxième édition parue en 2004 et l'Amendement 1:2017. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - le temps de montée et le temps de descente sont désormais des termes définis à l’Article 3; - l’origine des creux de tension et des coupures brèves est désormais décrite à l’Article 4. Mots-clés : méthodes d'essai d'immunité, réseaux d'alimentation à basse tension
Elektromagnetna združljivost (EMC) - 4-11. del: Preskusne in merilne tehnike - Preskusi odpornosti proti upadom napetosti, kratkotrajnim prekinitvam in odklonom napetosti za opremo z vhodnim tokom do 16 A na fazo
Ta del standarda IEC 61000 določa metode preskušanja odpornosti in obseg najprimernejših preskusnih nivojev za električno in elektronsko opremo, ki je priključena na nizkonapetostna električna omrežja za upade napetosti, kratkotrajne prekinitve in napetostna kolebanja.
Ta dokument se uporablja za električno in elektronsko opremo z nazivnim vhodnim tokom, ki ne presega 16 A na fazo, za priključitev na omrežja z izmeničnim napajanjem 50 Hz ali 60 Hz.
Ne uporablja se za električno in elektronsko opremo za priključitev na omrežja z izmeničnim tokom 400 Hz.
Preskusi za ta omrežja bodo zajeti v prihodnjih dokumentih Mednarodne elektrotehniške komisije (IEC).
Namen tega dokumenta je določiti skupno referenco za vrednotenje odpornosti električne in elektronske opreme na upade napetosti, kratkotrajne prekinitve ter napetostna kolebanja.
OPOMBA 1: Preskusi odpornosti pri spremembi napetosti so zajeti v standardu IEC 61000-4-14.
Preskusna metoda, dokumentirana v tem dokumentu, opisuje skladno metodo za oceno odpornosti opreme ali sistema proti opredeljenemu pojavu.
OPOMBA 2: To je osnovna objava o elektromagnetni združljivosti, ki jo uporabljajo tehnični odbori v okviru Mednarodne elektrotehniške komisije (IEC), kot je opisano v vodilu 107 Mednarodne elektrotehniške komisije. Poleg tega je v vodilu 107 navedeno, da so tehnični odbori v okviru Mednarodne elektrotehniške komisije odgovorni za določitev morebitne uporabe tega standarda s preskusom odpornosti, v primeru uporabe pa so odgovorni za določitev ustreznih preskusnih ravni. Tehnični odbor 77 in njegovi pododbori so pripravljeni za sodelovanje s tehničnimi odbori pri vrednotenju posameznih preskusov odpornosti za ustrezne izdelke.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN 61000-4-11:2005
SIST EN 61000-4-11:2005/A1:2017
Elektromagnetna združljivost (EMC) - 4-11. del: Preskusne in merilne tehnike -
Preskusi odpornosti proti upadom napetosti, kratkotrajnim prekinitvam in
napetostnim kolebanjem za opremo z vhodnim tokom do 16 A na fazo
Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques -
Voltage dips, short interruptions and voltage variations immunity tests for equipment with
input current up to 16 A per phase
Compatibilité électromagnétique (CEM) - Partie 4-11: Techniques d'essai et de mesure -
Essais d'immunité aux creux de tension, coupures brèves et variations de tension pour
les appareils à courant d’entrée inférieur ou égal à 16 A par phase
Ta slovenski standard je istoveten z: EN IEC 61000-4-11:2020
ICS:
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61000-4-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 33.100.20 Supersedes EN 61000-4-11:2004 and all of its
amendments and corrigenda (if any)
English Version
Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and
voltage variations immunity tests for equipment with input current
up to 16 A per phase
(IEC 61000-4-11:2020)
Compatibilité électromagnétique (CEM) - Partie 4-11: Elektromagnetische Verträglichkeit (EMV) - Teil 4-11: Prüf-
Techniques d'essai et de mesure - Essais d'immunité aux und Messverfahren - Prüfungen der Störfestigkeit gegen
creux de tension, coupures brèves et variations de tension Spannungseinbrüche, Kurzzeitunterbrechungen und
pour les appareils à courant d'entrée inférieur ou égal à 16 Spannungsschwankungen für Geräte mit einem
A par phase Eingangsstrom bis zu und einschließlich 16 A je Leiter
(IEC 61000-4-11:2020) (IEC 61000-4-11:2020)
This European Standard was approved by CENELEC on 2020-03-03. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61000-4-11:2020 E
European foreword
The text of document 77A/1039/FDIS, future edition 3 of IEC 61000-4-11, prepared by SC 77A "EMC -
Low frequency phenomena" of IEC/TC 77 "Electromagnetic compatibility" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 61000-4-11:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-12-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-03-03
document have to be withdrawn
This document supersedes EN 61000-4-11:2004 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 61000-4-11:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61000-2 (series) NOTE Harmonized as EN 61000-2 (series)
IEC 61000-2-4 NOTE Harmonized as EN 61000-2-4
IEC 61000-4-11:2004 NOTE Harmonized as EN 61000-4-11:2004 (not modified)
IEC 61000-4-14 NOTE Harmonized as EN 61000-4-14
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 TR 61000-2-8 - Electromagnetic compatibility (EMC) − Part 2-8: - -
Environment – Voltage dips and short interruptions
on public electric power supply systems with
statistical measurement results
IEC 61000-4-11 ®
Edition 3.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-11: Testing and measurement techniques – Voltage dips, short
interruptions and voltage variations immunity tests for equipment with input
current up to 16 A per phase
Compatibilité électromagnétique (CEM) –
Partie 4-11: Techniques d'essai et de mesure – Essais d'immunité aux creux
de tension, coupures brèves et variations de tension pour les appareils
à courant d’entrée inférieur ou égal à 16 A par phase
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-7546-7
– 2 – IEC 61000-4-11:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 9
5 Test levels . 9
5.1 General . 9
5.2 Voltage dips and short interruptions . 9
5.3 Voltage variations . 11
6 Test instrumentation . 14
6.1 Test generator . 14
6.1.1 General. 14
6.1.2 Characteristics and performance of the generator . 15
6.1.3 Verification of the characteristics of the voltage dips, short
interruptions generators . 15
6.2 Power source . 16
7 Test set-up . 16
8 Test procedures . 17
8.1 General . 17
8.2 Laboratory reference conditions . 17
8.2.1 Climatic conditions . 17
8.2.2 Electromagnetic conditions . 18
8.3 Execution of the test . 18
8.3.1 General. 18
8.3.2 Voltage dips and short interruptions . 18
8.3.3 Voltage variations . 19
9 Evaluation of test results . 19
10 Test report . 20
Annex A (normative) Test circuit details . 21
A.1 Test generator peak inrush current drive capability . 21
A.2 Current monitor's characteristics for measuring peak inrush current
capability . 21
A.3 EUT peak inrush current requirement . 21
Annex B (informative) Electromagnetic environment classes . 23
Annex C (informative) Test instrumentation. 24
Annex D (informative) Rationale for generator specification regarding voltage, rise-
time and fall-time, and inrush current capability . 27
D.1 Concept of basic standard . 27
D.2 IEC 61000-4-11:1994 (first edition) . 27
D.3 Rationale for the need of rapid fall-times . 27
D.4 Interpretation of the rise-time and fall-time requirements during EUT testing . 28
D.5 Main conclusions . 28
D.6 Rationale for inrush current capability . 28
Bibliography . 30
IEC 61000-4-11:2020 © IEC 2020 – 3 –
Figure 1 – Voltage dip – Examples . 12
Figure 2 – Short interruption . 13
Figure 3 – Detailed view of rise and fall time . 13
Figure 4 – Voltage variation . 14
Figure 5 – Phase-to-neutral and phase-to-phase testing on three-phase systems . 19
Figure A.1 – Circuit for determining the inrush current drive capability of the short
interruptions generator . 22
Figure A.2 – Circuit for determining the peak inrush current requirement of an EUT . 22
Figure C.1 – Schematics of test instrumentation for voltage dips, short interruptions
and voltage variations . 25
Figure C.2 – Schematic of test instrumentation for three-phase voltage dips, short
interruptions and voltage variations using a power amplifier . 26
Table 1 – Preferred test levels and durations for voltage dips .
...
SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN 61000-4-11:2005
SIST EN 61000-4-11:2005/A1:2017
Elektromagnetna združljivost (EMC) - 4-11. del: Preskusne in merilne tehnike -
Preskusi odpornosti proti upadom napetosti, kratkotrajnim prekinitvam in
odklonom napetosti za opremo z vhodnim tokom do 16 A na fazo
Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques -
Voltage dips, short interruptions and voltage variations immunity tests for equipment with
input current up to 16 A per phase
Elektromagnetische Verträglichkeit (EMV) - Teil 4-11: Prüf- und Messverfahren -
Prüfungen der Störfestigkeit gegen Spannungseinbrüche, Kurzzeitunterbrechungen und
Spannungsschwankungen für Geräte mit einem Eingangsstrom bis zu und einschließlich
16 A je Leiter
Compatibilité électromagnétique (CEM) - Partie 4-11: Techniques d'essai et de mesure -
Essais d'immunité aux creux de tension, coupures brèves et variations de tension pour
les appareils à courant d’entrée inférieur ou égal à 16 A par phase
Ta slovenski standard je istoveten z: EN IEC 61000-4-11:2020
ICS:
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61000-4-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 33.100.20 Supersedes EN 61000-4-11:2004 and all of its
amendments and corrigenda (if any)
English Version
Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and
voltage variations immunity tests for equipment with input current
up to 16 A per phase
(IEC 61000-4-11:2020)
Compatibilité électromagnétique (CEM) - Partie 4-11: Elektromagnetische Verträglichkeit (EMV) - Teil 4-11: Prüf-
Techniques d'essai et de mesure - Essais d'immunité aux und Messverfahren - Prüfungen der Störfestigkeit gegen
creux de tension, coupures brèves et variations de tension Spannungseinbrüche, Kurzzeitunterbrechungen und
pour les appareils à courant d'entrée inférieur ou égal à 16 Spannungsschwankungen für Geräte mit einem
A par phase Eingangsstrom bis zu und einschließlich 16 A je Leiter
(IEC 61000-4-11:2020) (IEC 61000-4-11:2020)
This European Standard was approved by CENELEC on 2020-03-03. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61000-4-11:2020 E
European foreword
The text of document 77A/1039/FDIS, future edition 3 of IEC 61000-4-11, prepared by SC 77A "EMC -
Low frequency phenomena" of IEC/TC 77 "Electromagnetic compatibility" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 61000-4-11:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-12-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-03-03
document have to be withdrawn
This document supersedes EN 61000-4-11:2004 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 61000-4-11:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61000-2 (series) NOTE Harmonized as EN 61000-2 (series)
IEC 61000-2-4 NOTE Harmonized as EN 61000-2-4
IEC 61000-4-11:2004 NOTE Harmonized as EN 61000-4-11:2004 (not modified)
IEC 61000-4-14 NOTE Harmonized as EN 61000-4-14
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 TR 61000-2-8 - Electromagnetic compatibility (EMC) − Part 2-8: - -
Environment – Voltage dips and short interruptions
on public electric power supply systems with
statistical measurement results
IEC 61000-4-11 ®
Edition 3.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-11: Testing and measurement techniques – Voltage dips, short
interruptions and voltage variations immunity tests for equipment with input
current up to 16 A per phase
Compatibilité électromagnétique (CEM) –
Partie 4-11: Techniques d'essai et de mesure – Essais d'immunité aux creux
de tension, coupures brèves et variations de tension pour les appareils
à courant d’entrée inférieur ou égal à 16 A par phase
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-7546-7
– 2 – IEC 61000-4-11:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 9
5 Test levels . 9
5.1 General . 9
5.2 Voltage dips and short interruptions . 9
5.3 Voltage variations . 11
6 Test instrumentation . 14
6.1 Test generator . 14
6.1.1 General. 14
6.1.2 Characteristics and performance of the generator . 15
6.1.3 Verification of the characteristics of the voltage dips, short
interruptions generators . 15
6.2 Power source . 16
7 Test set-up . 16
8 Test procedures . 17
8.1 General . 17
8.2 Laboratory reference conditions . 17
8.2.1 Climatic conditions . 17
8.2.2 Electromagnetic conditions . 18
8.3 Execution of the test . 18
8.3.1 General. 18
8.3.2 Voltage dips and short interruptions . 18
8.3.3 Voltage variations . 19
9 Evaluation of test results . 19
10 Test report . 20
Annex A (normative) Test circuit details . 21
A.1 Test generator peak inrush current drive capability . 21
A.2 Current monitor's characteristics for measuring peak inrush current
capability . 21
A.3 EUT peak inrush current requirement . 21
Annex B (informative) Electromagnetic environment classes . 23
Annex C (informative) Test instrumentation. 24
Annex D (informative) Rationale for generator specification regarding voltage, rise-
time and fall-time, and inrush current capability . 27
D.1 Concept of basic standard . 27
D.2 IEC 61000-4-11:1994 (first edition) . 27
D.3 Rationale for the need of rapid fall-times . 27
D.4 Interpretation of the rise-time and fall-time requirements during EUT testing . 28
D.5 Main conclusions . 28
D.6 Rationale for inrush current capability . 28
Bibliography . 30
IEC 61000-4-11:2020 © IEC 2020 – 3 –
Figure 1 – Voltage dip – Examples . 12
Figure 2 – Short interruption . 13
Figure 3 – Detailed view of rise and fall time . 13
Figure 4 – Voltage variation . 14
Figure 5 – Phase-to-neutral and phase-to-phase testing on three-phase systems . 19
Figure A.1 – Circuit for determining the inrush current drive capability of the short
interruptions generator . 22
Figure A.2 – Circuit for determining the peak inrush current requirement of an EUT . 22
Figure C.1 – Schematics of test instrumentation for voltage dips, short interruptions
and voltage variations . 25
Figure C.2 – Schem
...
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