IEC 61000-3-3:2008

Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection

IEC 61000-3-3:2008 is concerned with the limitation of voltage fluctuations and flicker impressed on the public low-voltage system. It specifies limits of voltage changes which may be produced by an equipment tested under specified conditions and gives guidance on methods of assessment. This part of IEC 61000 is applicable to electrical and electronic equipment having an input current equal to or less than 16 A per phase, intended to be connected to public low-voltage distribution systems of between 220 V and 250 V line to neutral at 50 Hz, and not subject to conditional connection. The tests according to this part are type tests. Particular test conditions are given in annex A and the test circuit is shown in Figure 1. This second edition IEC 61000-3-3 cancels and replaces the first edition published in 1994, amendment 1 (2001) and amendment 2 (2005). This edition constitutes a revised edition.

Compatibilité électromagnétique (CEM) - Partie 3-3: Limites - Limitation des variations de tension, des fluctuations de tension et du papillotement dans les réseaux publics d'alimentation basse tension, pour les matériels ayant un courant assigné ≤16 A par phase et non soumis à un raccordement conditionnel

IEC 61000-3-3:2008 traite des limitations des fluctuations de tension et du flicker appliqués sur le réseau de distribution public basse tension. Elle spécifie les limites des variations de tension pouvant être produites par un équipement essayé dans des conditions spécifiées et formule des recommandations pour les méthodes d'évaluation. La présente partie de la CEI 61000 s'applique aux matériels électriques et électroniques ayant un courant appelé inférieur ou égal à 16 A par phase et destinés à être raccordés à des réseaux publics de distribution basse tension présentant une tension nominale phase-neutre comprise entre 220 V et 250 V à 50 Hz et non soumis à un raccordement conditionnel. Les essais effectués selon la présente partie sont des essais de type. Les conditions d'essai pour des équipements particuliers sont données en Annexe A, et les circuits d'essai sont indiqués en Figure 1. Cette deuxième édition de la CEI 61000-3-3 annule et remplace la première édition parue en 1994, l'amendement 1 (2001) et l'amendement 2 (2005). Cette édition constitue une édition révisée.

General Information

• Status: Published
• Publication Date: 22-Jun-2008
• ICS: 33.100.10 - Emission
• Technical Committee: SC 77A - EMC - Low frequency phenomena
• Drafting Committee: WG 2 - TC 77/SC 77A/WG 2
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 14-May-2013

Relations

• Revises: IEC 61000-3-3:1994 - Electromagnetic compatibility (EMC) - Part 3: Limits - Section 3: Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current <= 16 A
• Effective Date: 05-Sep-2023
• Revised: IEC 61000-3-3:2013 - Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection
• Effective Date: 05-Sep-2023
• Revises: IEC 61000-3-3:1994/AMD2:2005 - Amendment 2 - Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection
• Effective Date: 05-Sep-2023
• Revises: IEC 61000-3-3:1994/AMD1:2001 - Amendment 1 - Electromagnetic compatibility (EMC) - Part 3: Limits - Section 3: Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current ≤ 16 A
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61000-3-3
Edition 2.0 2008-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromagnetic compatibility (EMC) –
Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations and flicker
in public low-voltage supply systems, for equipment with rated current ≤16 A per
phase and not subject to conditional connection

Compatibilité électromagnétique (CEM) –
Partie 3-3: Limites – Limitation des variations de tension, des fluctuations de
tension et du papillotement dans les réseaux publics d'alimentation basse
tension, pour les matériels ayant un courant assigné ≤16 A par phase et non
soumis à un raccordement conditionnel

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.

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IEC 61000-3-3
Edition 2.0 2008-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromagnetic compatibility (EMC) –
Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations and flicker
in public low-voltage supply systems, for equipment with rated current ≤16 A
per phase and not subject to conditional connection

Compatibilité électromagnétique (CEM) –
Partie 3-3: Limites – Limitation des variations de tension, des fluctuations de
tension et du papillotement dans les réseaux publics d'alimentation basse
tension, pour les matériels ayant un courant assigné ≤16 A par phase et non
soumis à un raccordement conditionnel

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 33.100.10 ISBN 2-8318-9831-5

– 2 – 61000-3-3 © IEC:2008
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Definitions.7
4 Assessment of voltage changes, voltage fluctuations and flicker .8
4.1 Assessment of a relative voltage change, "d" .8
4.2 Assessment of the short-term flicker value, P .9
st
4.2.1 Flickermeter.9
4.2.2 Simulation method.9
4.2.3 Analytical method.9
4.2.4 Use of P = 1 curve.10
st
4.3 Assessment of long-term flicker value, P .10
lt
5 Limits.10
6 Test conditions.11
6.1 General.11
6.2 Measurement accuracy.12
6.3 Test supply voltage.12
6.4 Reference impedance.12
6.5 Observation period.12
6.6 General test conditions.13
Annex A (normative) Application of limits and type test conditions
for specific equipment.18
Annex B (normative) Test conditions and procedures for measuring d voltage
max
changes caused by manual switching .25

Figure 1 – Reference network for single-phase and three-phase supplies derived
from a three-phase, four-wire supply.14
Figure 2 – Histogram evaluation of U(t).15
Figure 3 – Relative voltage change characteristic .15
Figure 4 – Curve for P =1 for rectangular equidistant voltage changes .16
st
Figure 5 – Shape factors F for double-step and ramp-voltage characteristics.16
Figure 6 – Shape factors F for rectangular and triangular voltage characteristics.17
Figure 7 – Shape factor F for motor-start voltage characteristics
having various front times .17

Table 1 – Assessment method .9
Table A.1 – Electrode parameters.23
Table A.2 – Frequency factor R related to repetition rate "r" .24

61000-3-3 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –

Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations
and flicker in public low-voltage supply systems, for equipment
with rated current ≤16 A per phase and not subject
to conditional connection
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61000-3-3 has been prepared by subcommittee 77A: Low-
frequency phenomena, of IEC technical committee 77: Electromagnetic compatibility.
This second edition IEC 61000-3-3 cancels and replaces the first edition published in 1994,
amendment 1 (2001) and amendment 2 (2005). This edition constitutes a revised edition.
The document 77A/644/FDIS, circulated to the National Committees as amendment 3, led to
the publication of the new edition.

– 4 – 61000-3-3 © IEC:2008
The text of this standard is based on the first edition, its amendment 1, amendment 2 and on
the following documents:
FDIS Report on voting
77A/644/FDIS 77A/650/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this amendment and the base publication w
...

IEC 61000-3-3 ®
Edition 2.0 2008-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromagnetic compatibility (EMC) –
Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations and flicker
in public low-voltage supply systems, for equipment with rated current ≤ 16 A
per phase and not subject to conditional connection

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 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.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

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.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
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Restez informé sur les nouvelles publications de la CEI.
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Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 61000-3-3 ®
Edition 2.0 2008-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromagnetic compatibility (EMC) –

Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations and flicker

in public low-voltage supply systems, for equipment with rated current ≤ 16 A

per phase and not subject to conditional connection

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10 ISBN 2-8318-9831-5

IEC 61000-3-3
Edition 2.0 2008-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromagnetic compatibility (EMC) –
Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations and flicker
in public low-voltage supply systems, for equipment with rated current ≤16 A per
phase and not subject to conditional connection

Compatibilité électromagnétique (CEM) –
Partie 3-3: Limites – Limitation des variations de tension, des fluctuations de
tension et du papillotement dans les réseaux publics d'alimentation basse
tension, pour les matériels ayant un courant assigné ≤16 A par phase et non
soumis à un raccordement conditionnel

– 2 – 61000-3-3 © IEC:2008
CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope.6

2 Normative references.6

3 Definitions.7

4 Assessment of voltage changes, voltage fluctuations and flicker .8

4.1 Assessment of a relative voltage change, "d" .8
4.2 Assessment of the short-term flicker value, P .9
st
4.2.1 Flickermeter.9
4.2.2 Simulation method.9
4.2.3 Analytical method.9
4.2.4 Use of P = 1 curve.10
st
4.3 Assessment of long-term flicker value, P .10
lt
5 Limits.10
6 Test conditions.11
6.1 General.11
6.2 Measurement accuracy.12
6.3 Test supply voltage.12
6.4 Reference impedance.12
6.5 Observation period.12
6.6 General test conditions.13
Annex A (normative) Application of limits and type test conditions
for specific equipment.18
Annex B (normative) Test conditions and procedures for measuring d voltage
max
changes caused by manual switching .25

Figure 1 – Reference network for single-phase and three-phase supplies derived
from a three-phase, four-wire supply.14
Figure 2 – Histogram evaluation of U(t).15
Figure 3 – Relative voltage change characteristic .15
Figure 4 – Curve for P =1 for rectangular equidistant voltage changes .16
st
Figure 5 – Shape factors F for double-step and ramp-voltage characteristics.16
Figure 6 – Shape factors F for rectangular and triangular voltage characteristics.17
Figure 7 – Shape factor F for motor-start voltage characteristics
having various front times .17

Table 1 – Assessment method .9
Table A.1 – Electrode parameters.23
Table A.2 – Frequency factor R related to repetition rate "r" .24

61000-3-3 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –

Part 3-3: Limits – Limitation of voltage changes, voltage fluctuations

and flicker in public low-voltage supply systems, for equipment

with rated current ≤16 A per phase and not subject

to conditional connection
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61000-3-3 has been prepared by subcommittee 77A: Low-
frequency phenomena, of IEC technical committee 77: Electromagnetic compatibility.
This second edition IEC 61000-3-3 cancels and replaces the first edition published in 1994,
amendment 1 (2001) and amendment 2 (2005). This edition constitutes a revised edition.
The document 77A/644/FDIS, circulated to the National Committees as amendment 3, led to
the publication of the new edition.

– 4 – 61000-3-3 © IEC:2008
The text of this standard is based on the first edition, its amendmen
...