EN 61000-2-12:2003

SLOVENSKI STANDARD
01-december-2003
Electromagnetic compatibility (EMC) -- Part 2-12: Environment - Compatibility
levels for low-frequency conducted disturbances and signalling in public medium-
voltage power supply systems (IEC 61000-2-12:2003)
Electromagnetic compatibility (EMC) -- Part 2-12 : Environment - Compatibility levels for
low-frequency conducted disturbances and signalling in public medium-voltage power
supply systems
Elektromagnetische Verträglichkeit -- Teil 2-12: Umgebungsbedingungen -
Verträglichkeitspegel für niederfrequente leitungsgeführte Störgrößen und
Signalübertragung in öffentlichen Mittelspannungsnetzen
Compatibilité électromagnétique (CEM) -- Partie 2-12: Environnement - Niveaux de
compatibilité pour les perturbations conduites à basse fréquence et la transmission des
signaux sur les réseaux publics d'alimentation moyenne tension
Ta slovenski standard je istoveten z: EN 61000-2-12:2003
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61000-2-12
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2003
ICS 33.100.01
English version
Electromagnetic compatibility (EMC)
Part 2-12 : Environment –
Compatibility levels for low-frequency conducted disturbances and
signalling in public medium-voltage power supply systems
(IEC 61000-2-12:2003)
Compatibilité électromagnétique (CEM) Elektromagnetische Verträglichkeit
Partie 2-12: Environnement – Teil 2-12: Umgebungsbedingungen -
Niveaux de compatibilité pour Verträglichkeitspegel für niederfrequente
les perturbations conduites à basse leitungsgeführte Störgrößen und
fréquence et la transmission des signaux Signalübertragung in öffentlichen
sur les réseaux publics d'alimentation Mittelspannungsnetzen
moyenne tension (IEC 61000-2-12:2003)
(CEI 61000-2-12:2003)
This European Standard was approved by CENELEC on 2003-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61000-2-12:2003 E
Foreword
The text of document 77A/404/FDIS, future edition 1 of IEC 61000-2-12, prepared by SC 77A, Low
frequency phenomena, of IEC TC 77, Electromagnetic compatibility, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61000-2-12 on 2003-06-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-06-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61000-2-12:2003 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 60038 NOTE Harmonized as HD 472 S1:1989 (modified).
IEC 60868 NOTE Harmonized as HD 498 S1:1987 (not modified).
IEC 60868-0 NOTE Harmonized as EN 60868-0:1993 (not modified).
IEC 61000-3-2 NOTE Harmonized as EN 61000-3-2:2000 (modified).
IEC 61000-3-3 NOTE Harmonized as EN 61000-3-3:1995 (not modified).
__________
- 3 - EN 61000-2-12:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60071 Series Insulation co-ordination EN 60071 Series

1) 2)
IEC 60071-1 - Insulation co-ordination EN 60071-1 1995
Part 1: Definitions, principles and rules

1) 2)
IEC 61000-2-2 - Electromagnetic compatibility (EMC) EN 61000-2-2 2002
Part 2-2: Environment - Compatibility
levels for low-frequency conducted
disturbances and signalling in public
low-voltage power supply systems

1) 2)
IEC 61000-2-4 - Part 2-4: Environment - Compatibility EN 61000-2-4 2002
levels in industrial plants for low-
frequency conducted disturbances

1) 2)
IEC 61000-4-7 - Part 4-7: Testing and measurement EN 61000-4-7 2002
techniques - General guide on
harmonics and interharmonics
measurements and instrumentation, for
power supply systems and equipment
connected thereto
1)
Undated reference.
2)
Valid edition at date of issue.

NORME CEI
INTERNATIONALE IEC
61000-2-12
INTERNATIONAL
Première édition
STANDARD
First edition
2003-04
Compatibilité électromagnétique (CEM) –
Partie 2-12:
Environnement – Niveaux de compatibilité
pour les perturbations conduites à basse
fréquence et la transmission des signaux
sur les réseaux publics d'alimentation
moyenne tension
Electromagnetic compatibility (EMC) –
Part 2-12:
Environment – Compatibility levels for
low-frequency conducted disturbances and
signalling in public medium-voltage power
supply systems
 IEC 2003 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
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U
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Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61000-2-12  IEC:2003 – 3 –
CONTENTS
FOREWORD . 5
INTRODUCTION .9
1 Scope and object .11
2 Normative references.13
3 Terms and definitions.13
3.1 General definitions.13
3.2 Phenomena related definitions .15
4 Compatibility levels .19
4.1 General comment .19
4.2 Voltage fluctuations and flicker.21
4.3 Harmonics .21
4.4 Interharmonics and voltage components at frequencies above that of the
th
50 harmonic.23
4.5 Voltage dips and short supply interruptions.23
4.6 Voltage unbalance .25
4.7 Transient overvoltages.25
4.8 Temporary power frequency variation.25
4.9 DC component.25
4.10 Mains signalling .27
Annex A (informative) The function of compatibility levels and planning levels in EMC.31
A.1 The need for compatibility levels .31
A.2 Relation between compatibility level and immunity levels .31
A.3 Relation between compatibility level and emission limits .33
A.4 Planning levels.37
A.5 Illustration of compatibility, emission, immunity and planning levels .37
Annex B (informative) Discussion of some disturbance phenomena .41
B.1 Resolution of non-sinusoidal voltages and currents .41
th
B.2 Interharmonics and voltage components at frequencies above that of the 50
harmonic.45
B.3 Voltage dips and short supply interruptions.51
B.4 Transient overvoltages.53
B.5 DC component.53
Bibliography .55

61000-2-12  IEC:2003 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 2-12: Environment –
Compatibility levels for low-frequency conducted disturbances and
signalling in public medium-voltage power supply systems
FOREWORD
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