Adjustable speed electrical power drive systems -- Part 3: EMC requirements and specific test methods

Specifies electromagnetic compatibility (EMC) requirements for power drive systems (PDSs). A PDS is defined in 3.1. These are adjustable speed a.c. or d.c. motor drives. Requirements are stated for PDSs with converter input and/or output voltages (line-to-line voltage), up to 35 kV a.c. r.m.s. The three main changes are: a) the classes of distribution of the PDS have been replaced by categories of PDS (C1 to C4) with definitions related to the product itself and its intended use, b) better coverage of emission limits, c) an EMC plan is generalized for categeory C4.

Drehzahlveränderbare elektrische Antriebe -- Teil 3: EMV-Anforderungen einschließlich spezieller Prüfverfahren

Entraînements électriques de puissance à vitesse variable -- Partie 3: Exigences de CEM et méthodes d'essais spécifiques

spécifie les prescriptions de compatibilité électromagnétique (CEM) applicables aux entraînements de puissance (PDS). Le PDS est défini en 3.1. Il s'agit d'entraînements à vitesse variable pour moteurs électriques à courant alternatif ou continu. Cette norme spécifie les exigences afférentes aux PDS avec convertisseurs ayant des tensions d'entrée et/ou sortie (tensions entre phases), de valeur efficace allant jusqu'à 35 kV en alternatif.

Električni pogonski sistemi z nastavljivo hitrostjo - 3. del: Zahteve za elektromagnetno združljivost in posebne preskusne metode (IEC 61800-3:2004)

Standard določa zahteve za elektromagnetno združljivost za pogonske sisteme. Pogonski sistem je opredeljen v točki 3.1. Pogonski sistemi so motorni pogoni z enosmerno ali izmenično napetostjo z nastavljivo hitrostjo. Zahteve so določene za pogonske sisteme s pretvornimi vhodnimi in/ali izhodnimi napetostmi (medlinijska napetost), do 35 kV izmenične napetosti efektivne vrednosti. Tri glavne spremembe so: a) distribucijske razrede pogonskih sistemov so nadomestile kategorije pogonskih sistemov (C1 do C4), pri čemer so opredelitve povezane s samim proizvodom in njegovo nameravano uporabo, b) boljša pokritost mejnih vrednosti emisij, c) za kategorijo C4 je posplošen načrt v zvezi z elektromagnetno združljivostjo.

General Information

Status
Withdrawn
Publication Date
31-May-2005
Withdrawal Date
15-Aug-2021
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
30-Jul-2021
Due Date
22-Aug-2021
Completion Date
16-Aug-2021

Relations

Buy Standard

Standard
EN 61800-3:2005
English language
122 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

SLOVENSKI SIST EN 61800-3:2005

STANDARD
junij 2005
(OHNWULþQLSRJRQVNLVLVWHPL]QDVWDYOMLYRKLWURVWMRGHO=DKWHYH]D
HOHNWURPDJQHWQR]GUXåOMLYRVWLQSRVHEQHSUHVNXVQHPHWRGH ,(&
3:2004)
Adjustable speed electrical power drive systems - Part 3: EMC requirements and
specific test methods (IEC 61800-3:2004)
ICS 5HIHUHQþQDãWHYLOND
29.200; 33.100.01
SIST EN 61800-3:2005(en)
! "#$%!&!%’()*#+’

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD EN 61800-3
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2004

ICS 29.200 ; 33.100 Supersedes EN 61800-3:1996 + A11:2000


English version


Adjustable speed electrical power drive systems
Part 3: EMC requirements and specific test methods
(IEC 61800-3:2004)


Entraînements électriques de puissance  Drehzahlveränderbare elektrische
à vitesse variable Antriebe
Partie 3: Exigences de CEM et méthodes Teil 3: EMV-Anforderungen einschließlich
d'essais spécifiques spezieller Prüfverfahren
(CEI 61800-3:2004) (IEC 61800-3:2004)






This European Standard was approved by CENELEC on 2004-10-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61800-3:2004 E

---------------------- Page: 2 ----------------------

EN 61800-3:2004 - 2 -
Foreword
The text of document 22G/127/FDIS, future edition 2 of IEC 61800-3, prepared by SC 22G, Adjustable
speed electric drive systems incorporating semiconductor power converters, of IEC TC 22, Power
electronic systems and equipment, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 61800-3 on 2004-10-01.
This European Standard supersedes EN 61800-3:1996 + A11:2000 + corrigendum May 2001.
This European Standard introduces three main changes:
a) the classes of distribution (unrestricted and restricted) of the PDS have been replaced by
categories of PDS (C1 to C4) with definitions related to the product itself and its intended use;
b) better coverage of emission limits;
c) an EMC plan is generalized for category C4.
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) 2005-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-10-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of Directive
89/336/EEC. See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
__________

---------------------- Page: 3 ----------------------

- 3 - EN 61800-3:2004
Endorsement notice
The text of the International Standard IEC 61800-3:2004 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 60146-1-3 NOTE Harmonized as EN 60146-1-3:1993 (not modified).
IEC 60146-2 NOTE Harmonized as EN 60146-2:2000 (not modified).
IEC 61000-2-12 NOTE Harmonized as EN 61000-2-12:2003 (not modified).
IEC 61000-4-1 NOTE Harmonized as EN 61000-4-1:2000 (not modified).
IEC 61000-4-7 NOTE Harmonized as EN 61000-4-7:2000 (not modified).
IEC 61000-4-9 NOTE Harmonized as EN 61000-4-9:1993 (not modified).
IEC 61000-4-10 NOTE Harmonized as EN 61000-4-10:1993 (not modified).
IEC 61000-6-1 NOTE Harmonized as EN 61000-6-1:2001 (modified).
IEC 61000-6-2 NOTE Harmonized as EN 61000-6-2:1999 (not modified).
IEC 61000-6-4 NOTE Harmonized as EN 61000-6-4:2001 (modified).
IEC 61800-5-1 NOTE Harmonized as EN 61800-5-1:2003 (not modified).
__________

---------------------- Page: 4 ----------------------

EN 61800-3:2004 - 4 -
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-131 2002 International Electrotechnical - -
Vocabulary
Part 131: Circuit theory

IEC 60050-151 2001 Part 151: Electrical and magnetic - -
devices

IEC 60050-161 1990 Chapter 161: Electromagnetic - -
compatibility

IEC 60146-1-1 1991 Semiconductor convertors - General EN 60146-1-1 1993
requirements and line commutated
convertors
Part 1-1: Specifications of basic
requirements

IEC 60364-1 2001 Electrical installations of buildings - -
Part 1: Fundamental principles,
assessment of general characteristics,
definitions

1)
IEC 60664-1 1992 Insulation coordination for equipment EN 60664-1 2003
within low-voltage systems
Part 1: Principles, requirements and
tests

2)
IEC/TR 61000-1-1 – Electromagnetic compatibility (EMC) - -
Part 1: General - Section 1: Application
and interpretation of fundamental
definitions and terms

IEC/TR 61000-2-1 1990 Part 2: Environment - Section 1: - -
Description of the environment -
Electromagnetic environment for low-
frequency conducted disturbances and
signalling in public power supply
systems


1)
EN 60664-1 includes A1:2000 + A2:2002 to IEC 60664-1.
2)
Undated reference.

---------------------- Page: 5 ----------------------

- 5 - EN 61800-3:2004
Publication Year Title EN/HD Year
IEC 61000-2-2 2002 Part 2-2: Environment - Compatibility EN 61000-2-2 2002
levels for low-frequency conducted
disturbances and signalling in public
low-voltage power supply systems

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

IEC 61000-2-6 1995 Part 2-6: Environment - Assessment of - -
the emission levels in the power supply
of industrial plants as regards low-
frequency conducted disturbances

IEC 61000-3-2 2000 Part 3-2: Limits - Limits for harmonic EN 61000-3-2 2000
(mod) current emissions (equipment input
current up to and including 16 A per
phase)

IEC 61000-3-3 1994 Part 3-3: Limits - Limitation of voltage EN 61000-3-3 1995
changes, voltage fluctuations and flicker + corr. July 1997
in public low-voltage supply systems,
for equipment with rated current ≤16 A
per phase and not subject to conditional
connection

IEC/TS 61000-3-4 1998 Electromagnetic compatibility (EMC) - -
Part 3-4: Limits - Limitation of emission
of harmonic currents in low-voltage
power supply systems for equipment
with rated current greater than 16 A

IEC 61000-3-7 1996 Electrical apparatus for the detection - -
and measurement of combustible
gases, toxic gases or oxygen -
Requirements and tests for apparatus
using software and/or digital
technologies

IEC 61000-3-11 2000 Part 3-11: Limits - Limitation of voltage EN 61000-3-11 2000
changes, voltage fluctuations and flicker
in public low-voltage supply systems -
Equipment with rated current ≤ 75 A
and subject to conditional connection

2) 3)
IEC 61000-4-2 – Part 4-2: Testing and measurement EN 61000-4-2 1995
techniques - Electrostatic discharge
immunity test

IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test


3)
Valid edition at date of issue.

---------------------- Page: 6 ----------------------

EN 61800-3:2004 - 6 -
Publication Year Title EN/HD Year
IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
techniques - Electrical fast
transient/burst immunity test
A1 2000 A1 2001
A2 2001 A2 2001

IEC 61000-4-5 1995 Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test

IEC 61000-4-6 2003 Part 4-6: Testing and measurement - -
techniques - Immunity to conducted
disturbances, induced by radio-
frequency fields

IEC 61000-4-8 1993 Part 4-8: Testing and measurement EN 61000-4-8 1993
techniques - Power frequency magnetic
field immunity test
A1 2000 A1 2001

IEC 61800-1 1997 Adjustable speed electrical power drive EN 61800-1 1998
systems
Part 1: General requirements - Rating
specifications for low voltage adjustable
speed d.c. power drive systems

IEC 61800-2 1998 Part 2: General requirements - Rating EN 61800-2 1998
specifications for low voltage adjustable
frequency a.c. power drive systems

IEC 61800-4 2002 Part 4: General requirements - Rating EN 61800-4 2003
specifications for a.c. power drive
systems above 1 000 V a.c. and not
exceeding 35 kV

CISPR 11 2003 Industrial scientific and medical (ISM) - -
radio-frequency equipment -
Electromagnetic disturbance
characteristics - Limits and methods of
measurement

CISPR 14 Series Electromagnetic compatibility - EN 55014 Series
Requirements for household
appliances, electric tools and similar
apparatus

CISPR 16-1 1999 Specification for radio disturbance and - -
immunity measuring apparatus and
methods
Part 1: Radio disturbance and immunity
measuring apparatus
A1 2002 - -

CISPR 22 2003 Information technology equipment - - -
Radio disturbance characteristics -
Limits and methods of measurement

---------------------- Page: 7 ----------------------

- 7 - EN 61800-3:2004
Annex ZZ
(informative)

Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Article 4 of the EC Directive 89/336/EEC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive[s] concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling
within the scope of this standard.
__________

---------------------- Page: 8 ----------------------

NORME CEI
INTERNATIONALE IEC
61800-3
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-08
Entraînements électriques de puissance
à vitesse variable –
Partie 3:
Exigences de CEM et méthodes
d'essais spécifiques
Adjustable speed electrical power
drive systems –
Part 3:
EMC requirements and specific
test methods
” IEC 2004 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
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale XE
PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

---------------------- Page: 9 ----------------------

61800-3 ” IEC:2004 – 3 –
CONTENTS
FOREWORD.11
1 Scope and object.15
2 Normative references.17
3 Terms and definitions .21
4 Common requirements.31
4.1 General conditions.31
4.2 Tests.33
4.3 Documentation for the user.33
5 Immunity requirements.35
5.1 General conditions.35
5.2 Basic immunity requirements – Low-frequency disturbances.41
5.3 Basic immunity requirements – High-frequency disturbances .51
5.4 Application of immunity requirements – statistical aspect.57
6 Emission.59
6.1 General emission requirements.59
6.2 Basic low-frequency emission limits .59
6.3 Conditions related to high-frequency emission measurement .65
6.4 Basic high-frequency emission limits.67
6.5 Engineering practice.73
6.6 Application of emission requirements – statistical aspects .81
Annex A (informative) EMC techniques.83
A.1 General overview of EMC phenomena.83
A.2 Load conditions regarding high-frequency phenomena .89
A.3 Some immunity aspects .91
A.4 High-frequency emission measurement techniques .93
Annex B (informative) Low-frequency phenomena .103
B.1 Commutation notches .103
B.2 Definitions related to harmonics and interharmonics .113
B.3 Application of harmonic emission standards .125
B.4 Installation rules/Assessment of harmonic compatibility.143
B.5 Voltage unbalance.153
B.6 Voltage dips – Voltage fluctuations .159
B.7 Verification of immunity to low frequency disturbances .163
Annex C (informative) Reactive power compensation – filtering.167
C.1 Installation .167
C.2 Reactive power and harmonics .183

---------------------- Page: 10 ----------------------

61800-3 ” IEC:2004 – 5 –
Annex D (informative) Considerations on high-frequency emission.191
D.1 User guidelines .191
D.2 Safety and RFI-filtering in power supply systems.199
Annex E (informative) EMC analysis and EMC plan .203
E.1 General – System EMC analysis applied to PDSs.203
E.2 Example of EMC plan for general applications.209
E.3 Example of supplement to EMC plan for particular application .217
Bibliography .225
Figure 1 – Definition of the installation and its content .23
Figure 2 – Internal interfaces of the PDS and examples of ports .27
Figure 3 – Power interfaces of a PDS with common d.c. BUS .29
Figure 4 – Power interfaces with common input transformer.29
Figure 5 – Propagation of disturbances .38
Figure 6 – Propagation of disturbances in installation with a PDS rated > 1 000 V.77
Figure A.1 – Coordination between disturbance and immunity.87
Figure B.1 – Typical waveform of commutation notches – Distinction from non-
repetitive transient. .103
Figure B.2 – PCC, IPC, Installation current ratio and R .123
SI
Figure B.3 – PCC, IPC, Installation current ratio and R .125
SC
Figure B.4 – Assessment of the harmonic emission of a PDS.131
Figure B.5 – Load conditions for the measurement of harmonic emission of a PDS .133
Figure B.6 – Test set up with mechanical load .135
Figure B.7 – Test set up with electrical load replacing the loaded motor .135
Figure B.8 – Test set up with resistive load .137
Figure B.9 – Assessment of harmonic emission where PDS are used (apparatus,
systems or installations).145
Figure C.1 – Reactive power compensation .173
Figure C.2 – Simplified diagram of an industrial network .177
Figure C.3 – Impedance versus frequency of the simplified network.177
Figure C.4 – Example of passive filter battery.183
Figure C.5 – Example of inadequate solution in reactive power compensation.185
Figure D.1 – Conducted emission of various unfiltered PDSs .193
Figure D.2 – Expected radiated emission of PDS up to rated voltage 400 V Peak
values normalised at 10 m .195
Figure D.3 – Safety and filtering.201
Figure E.1 – Interaction between systems and EM environment .203
Figure E.2 – Zone concept .205
Figure E.3 – Example of drive .207

---------------------- Page: 11 ----------------------

61800-3 ” IEC:2004 – 7 –
Table 1 – Criteria to prove the acceptance of a PDS against electromagnetic
disturbances.37
Table 2 – Minimum immunity requirements for harmonics and commutation
notches/voltage distortion on power ports of low voltage PDSs .43
Table 3 – Minimum immunity requirements for harmonics and commutation
notches/voltage distortion on main power ports of PDSs of rated voltage above 1 000 V .43
Table 4 – Minimum immunity requirements for harmonics and commutation
notches/voltage distortion on auxiliary low voltage power ports of PDSs.45
Table 5 – Minimum immunity requirements for voltage deviations, dips and short
interruptions on power ports of low voltage PDSs .45
Table 6 – Minimum immunity requirements for voltage deviations, dips and short
interruptions on main power ports of rated voltage above 1 000 V of PDSs .47
Table 7 – Minimum immunity requirements for voltage deviations, dips and short
interruptions on auxiliary low voltage power ports of PDSs.49
Table 8 – Minimum immunity requirements for voltage unbalance and frequency
variations on power ports of low voltage PDSs .49
Table 9 – Minimum immunity requirements for voltage unbalance and frequency
variations on main power ports of rated voltage above 1 000 V of PDSs.51
Table 10 – Minimum immunity requirements for voltage unbalance and frequency
variations on auxiliary low voltage power ports of PDSs.51
Table 11–Minimum immunity requirements for PDSs intended for use in the first
environment.53
Table 12 – Minimum immunity requirements for PDSs intended for use in the second
environment.55
Table 13 – Summary of emission requirements.59
Table 14 – Limits for mains terminal disturbance voltage in the frequency band 150
kHz to 30 MHz .67
Table 15 – Limits for electromagnetic radiation disturbance in the frequency band 30
MHz to 1 000 MHz .69
Table 16 – Limits of disturbance voltage on the power interface – Option 2 .71
Table 17 – Limits for mains terminal disturbance voltage in the frequency band
150 kHz to 30 MHz PDS in the second environment – PDS of category C3.71
Table 18 – Limits for electromagnetic radiation disturbance in the frequency band
30 MHz to 1 000 MHz PDS in the second environment – PDS of category C3.73
Table 19 – Limits for propagated disturbance voltage ("outside" in the first
environment) .79
Table 20 –Limits for propagated disturbance voltage ("outside" in the second
environment) .79
Table 21 – Limits for propagated electromagnetic disturbance above 30 MHz .79
Table 22 – Limits for electromagnetic disturbance below 30 MHz.81

---------------------- Page: 12 ----------------------

61800-3 ” IEC:2004 – 9 –
Table A.1 – EMC overview .85
Table B.1 – Maximum allowable depth of commutation notches at the PC .111
Table B.2 – Harmonic current emission requirements relative to the total current of the
agreed power at the PCC or IPC .149
Table B.3 – Verification plan for immunity to low frequency disturbances .165
Table E.1 – EM interaction between subsystems and environment .207
Table E.2 – Frequency analysis .221

---------------------- Page: 13 ----------------------

61800-3 ” IEC:2004 – 11 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ADJUSTABLE SPEED ELECTRICAL POWER
DRIVE SYSTEMS –
Part 3: EMC requirements and specific test methods
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 61800-3 has been prepared by sub-committee 22G: Adjustable
speed electric drive systems incorporating semiconductor power converte
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.