IEC 61000-4-10:2016
(Main)Electromagnetic compatibility (EMC) - Part 4-10: Testing and measurement techniques - Damped oscillatory magnetic field immunity test
Electromagnetic compatibility (EMC) - Part 4-10: Testing and measurement techniques - Damped oscillatory magnetic field immunity test
IEC 61000-4-10:2016 specifies the immunity requirements, test methods, and range of recommended test levels for equipment subjected to damped oscillatory magnetic disturbances related to medium voltage and high voltage sub-stations. This second edition cancels and replaces the first edition published in 1993 and Amendment 1:2000. This edition constitutes a technical revision.
Compatibilité électromagnétique (CEM) - Partie 4-10: Techniques d'essai et de mesure - Essai d'immunité au champ magnétique oscillatoire amorti
IEC 61000-4-10:2016 specifies the immunity requirements, test methods, and range of recommended test levels for equipment subjected to damped oscillatory magnetic disturbances related to medium voltage and high voltage sub-stations. This second edition cancels and replaces the first edition published in 1993 and Amendment 1:2000. This edition constitutes a technical revision.
General Information
Relations
Standards Content (Sample)
IEC 61000-4-10 ®
Edition 2.0 2016-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –
Part 4-10: Testing and measurement techniques – Damped oscillatory magnetic
field immunity test
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.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
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.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC 61000-4-10 ®
Edition 2.0 2016-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
BASIC EMC PUBLICATION
Electromagnetic compatibility (EMC) –
Part 4-10: Testing and measurement techniques – Damped oscillatory magnetic
field immunity test
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.20 ISBN 978-2-8322-3525-6
– 2 – IEC 61000-4-10:2016 RLV IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope and object . 8
2 Normative references. 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 10
4 General . 11
5 Test levels . 11
6 Test equipment .
6 Test instrumentation . 15
6.1 General . 15
6.2 Damped oscillatory wave generator . 15
6.2.1 General . 15
6.2.2 Performance characteristics of the generator connected to the
standard induction coil . 16
6.3 Standard induction coil . 18
6.4 Calibration of the test system . 18
7 Test setup . 19
7.1 Test equipment . 19
7.2 Verification of the test instrumentation . 21
7.3 Test setup for table-top EUT . 21
7.4 Test setup for floor standing EUT . 22
7.5 Test setup for damped oscillatory field applied in-situ . 24
8 Test procedure . 24
8.1 General . 24
8.2 Laboratory reference conditions . 24
8.2.1 Climatic conditions . 24
8.2.2 Electromagnetic conditions . 25
8.3 Carrying out Execution of the test . 25
9 Evaluation of test results . 26
10 Test report. 27
Annex A (normative) Induction coil calibration method .
Annex A (informative) Information on the field distribution of standard induction coils . 32
A.1 General . 32
A.2 Determination of the coil factor . 32
A.2.1 General . 32
A.2.2 Coil factor calculation . 32
A.3 1 m × 1 m standard induction coil . 33
A.4 1 m × 2,6 m standard induction coil with reference ground plane . 34
A.5 1 m × 2,6 m standard induction coil without reference ground plane . 35
Annex B (normative) Characteristics of the induction coils .
Annex B (informative) Selection of the test levels . 43
Annex C (informative) Damped oscillatory magnetic field frequency . 46
Annex D (informative) Information on magnetic field strength .
Annex D (informative) Measurement uncertainty (MU) considerations . 47
D.1 General . 47
D.2 Legend . 47
D.3 Uncertainty contributors to the peak current and to the damped oscillatory
magnetic field measurement uncertainty . 47
D.4 Uncertainty of peak current and damped oscillatory magnetic field calibration . 48
D.4.1 General . 48
D.4.2 Peak current . 48
D.4.3 Further MU contributions to amplitude and time measurements . 50
D.4.4 Rise time of the step response and bandwidth of the frequency
response of the measuring system . 50
D.4.5 Impulse peak distortion due to the limited bandwidth of the measuring
system . 51
D.5 Application of uncertainties in the damped oscillatory wave generator
compliance criterion . 52
Annex E (informative) 3D numerical simulations . 53
E.1 General . 53
E.2 Simulations . 53
E.3 Comments . 53
Bibliography . 59
Figure 1 – Example of application of the test field by the immersion method .
Figure 1 – Simplified schematic circuit of the test generator for damped oscillatory
magnetic field . 16
Figure 2 – Current waveform of the test generator for damped oscillatory magnetic field
(sinusoid wave) .
Figure 2 – Waveform of short-circuit current in the standard coils . 17
Figure 3 – Schematic circuit of the test generator for damped oscillatory magnetic field .
Figure 3 – Waveform of short-circuit current showing the repetition time T . 17
rep
Figure 4 – Example of a current measurement of standard induction coils . 18
Figure 5 – Example of test set-up for floor-standing equipment .
Figure 5 – Example of test setup for table-top equipment . 22
Figure 6 – Example of investigation of susceptibility to magnetic field by the proximity
method .
Figure 6 – Example of test setup for floor standing equipment showing the horizontal
orthogonal plane . 23
Figure 7 – Illustration of Helmholtz coils .
Figure 7 – Example of test setup for floor standing equipment showing the vertical
orthogonal plane . 23
Figure 8 – Example of test setup using the proximity method . 24
Figure A.1 – Rectangular induction coil with sides a + b and c . 33
Figure A.2 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane
for the 1 m × 1 m induction coil . 33
Figure A.3 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-z plane for the 1 m × 1 m induction coil . 34
Figure A.4 – +3 dB isoline for the magnetic field strength (magnitude) in the x-z plane
for the 1 m × 2,6 m induction coil with reference ground plane . 34
– 4 – IEC 61000-4-10:2016 RLV IEC 2016
Figure A.5 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-y plane for the 1 m × 2,6 m induction coil with reference ground plane . 35
Figure A.6 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane
for the 1 m × 2,6 m induction coil without reference ground plane . 35
Figure A.7 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-z plane for the 1 m × 2,6 m induction coil without reference ground plane . 36
Figure B.1 – Characteristics of the field generated by a square induction coil
(1 m side) in its plane .
Figure B.2 – 3 dB area of the field generated by a square induction coil (1 m side)
in its plane .
Figure B.3 –3 dB area of the field generated by a square induction coil (1 m side)
in the mean orthogonal plane (component orthogonal to the plane of the coil) .
Figure B.4 – 3 dB area of the field generated by two square induction coils
(1 m side) 0,6 m spaced, in the mean orthogonal plane (component orthogonal
to the plane of the coils) .
Figure B.5 – 3 dB area of the field generated by two square induction coils
(1 m side) 0,8 m spaced, in the mean orthogonal plane (component orthogonal
to the plane of the coils) .
Figure B.6 – 3 dB area of the field generated by a rectangular induction coil
(1 m × 2,6 m) in its plane .
Figure B.7 – 3 dB area of the field generated by a rectangular induction coil
(1 m × 2,6 m) in its plane (ground plane as a side of the induction coil) .
Figure B.8 – 3 dB area of the field generated by a rectangular induction coil
(1 m × 2,6 m) with ground plane, in the mean orthogonal plane (component orthogonal
to the plane of the coil) .
Figure E.1 – Current with period of 1 µs and H-field in the center of the 1 m × 1 m
standard induction coil . 54
Figure E.2 – Hx–field along the side of 1 m × 1 m standard induction coil in A/m . 54
Figure E.3 – Hx–field in direction x perpendicular to the plane of the 1 m × 1 m
standard induction coil . 55
Figure E.4 – Hx–field along the side in dB for 1 m × 1 m standard induction coil . 55
Figure E.5 – Hx–field along the diagonal in dB for the 1 m × 1 m standard induction coil . 56
Figure E.6 – Hx–field plot on y-z plane for the 1 m × 1 m standard induction coil . 56
Figure E.7 – Hx-field plot on x-y plane for the 1 m × 1 m standard induction coil . 57
Figure E.8 – Hx–field along the vertical middle line in dB for the 1 m × 2,6 m standard
induction coil . 57
Figure E.9 – Hx–field 2D–plot on y-z plane for the 1 m × 2,6 m standard induction coil . 58
Figure E.10 – Hx–field 2D–plot on x-y plane at z = 0,5 m for the 1 m × 2,6 m standard
induction coil . 58
Table 1 – Test levels . 11
Table 2 – Peak current specifications of the test system . 19
Table 3 – Waveform specifications of the test system . 19
Table D.1 – Example of uncertainty budget for the peak of the damped oscillatory
current impulse (I ) . 49
p
α
Table D.2 – factor (see equation (D.6)) of different unidirectional impulse responses
corresponding to the same bandwidth of the system B . 51
Table D.3 – β factor (equation (D.12)) of the damped oscillatory waveform . 52
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 4-10: Testing and measurement techniques –
Damped oscillatory magnetic field immunity test
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 6 – IEC 61000-4-10:2016 RLV IEC 2016
International Standard IEC 61000-4-10 has been prepared by subcommittee 77B: High
frequency phenomena, of IEC technical committee 77: Electromagnetic compatibility.
It forms Part 4-10 of the IEC 61000 series. It has the status of a basic EMC publication in
accordance with IEC Guide 107.
This second edition cancels and replaces the first edition published in 1993 and Amendment
1:2000. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) new Annex A on induction coil field distribution;
b) new Annex D on measurement uncertainty;
c) new Annex E for numerical simulations;
d) calibration using current measurement has been addressed in this edition.
The text of this standard is based on the following documents:
CDV Report on voting
77B/730/CDV 77B/746A/RVC
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.
A list of all parts in the IEC 61000 series, published under the general title Electromagnetic
compatibility (EMC), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
IEC 61000 is published in separate parts according to the following structure:
Part 1: General
General considerations (introduction, fundamental principles)
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of the environment
Compatibility levels
Part 3: Limits
Emission limits
Immunity limits (insofar as they do not fall under the responsibility of the product
committees)
Part 4: Testing and measurement techniques
Measurement techniques
Testing techniques
Part 5: Installation and mitigation guidelines
Installation guidelines
Mitigation methods and devices
Part 6: Generic standards
Part 9: Miscellaneous
Each part is further subdivided into several parts, published either as international standards
or as technical specifications or technical reports, some of which have already been published
as sections. Others will be published with the part number followed by a dash and a second
number identifying the subdivision (example: IEC 61000-6-1).
These standards and reports will be published in chronological order and numbered
accordingly.
This part is an international standard which gives immunity requirements and test procedures
related to "damped oscillatory magnetic field".
– 8 – IEC 61000-4-10:2016 RLV IEC 2016
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 4-10: Testing and measurement techniques –
Damped oscillatory magnetic field immunity test
1 Scope and object
This part of IEC 61000 relates to specifies the immunity requirements of equipment, only
under operational conditions, test methods, and range of recommended test levels for
equipment subjected to damped oscillatory magnetic disturbances related to medium voltage
and high voltage sub-stations.
The applicability of this standard to equipment installed in different locations is determined by
the presence of the phenomenon, as specified in clause 3.
The test defined in this standard is applied to equipment which is intended to be installed in
locations where the phenomenon as specified in Clause 4 will be encountered.
This standard does not consider specify disturbances due to capacitive or inductive coupling
in cables or other parts of the field installation. IEC 61000-4-18, which deals with conducted
disturbances, covers these aspects.
The object of this standard is to establish a common and reproducible basis for evaluating the
performance of electrical and electronic equipment for medium voltage and high voltage sub-
stations when subjected to damped oscillatory magnetic fields.
The test is mainly applicable to electronic equipment to be installed in H.V. sub-stations.
Power plants, switchgear installations, smart grid systems may also be applicable to this
standard and may be considered by product committees.
NOTE 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 is applied or not, and if applied, they are responsible for determining the appropriate test levels and
performance criteria. TC 77 and its sub-committees are prepared to co-operate with product committees in the
evaluation of the value of particular immunity test levels for their products.
This standard has the object to defines:
– recommended a range of test levels;
– test equipment;
– test setups;
– test procedures.
2 Normative references
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.
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV) (available at
www.electropedia.org)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
The following definitions and terms are used in this standard and apply to the restricted field
of magnetic disturbances; not all of them are included in IEC 60050(161) [IEV].
For the purposes of this document, the terms and definitions given in IEC 60050 as well as
the following apply.
3.1.1
calibration
set of operations which establishes, by reference to standards, the relationship which exists,
under specified conditions, between an indication and a result of a measurement
Note 1 to entry: This term is based on the "uncertainty" approach.
Note 2 to entry: The relationship between the indications and the results of measurement can be expressed, in
principle, by a calibration diagram.
[SOURCE: IEC 60050-311:2001, 311-01-09]
3.1.2
damped oscillatory wave generator
generator delivering a damped oscillation whose frequency can be set to 100 kHz or 1 MHz
and whose damping time constant is five periods
3.1.3
immunity
ability of a device, equipment or system to perform without degradation in the presence of an
electromagnetic disturbance
[SOURCE: IEC 60050-161:1990, 161-01-20]
3.1.4
induction coil
conductor loop of defined shape and dimensions, in which a current flows, generating a
magnetic field of defined constancy in its plane and in the enclosed uniformity in a defined
volume
3.1.5
induction coil factor
ratio between the magnetic field strength generated by an induction coil of given dimensions
and the corresponding current value
Note 1 to entry: The field is that measured at the centre of the coil plane, without the EUT.
4.4
immersion method
method of application of the magnetic field to the EUT, which is placed in the centre of an
induction coil (figure 1)
3.1.6
proximity method
method of application of the magnetic field to the EUT, where a small induction coil is moved
along the side of the EUT in order to detect particularly sensitive areas
– 10 – IEC 61000-4-10:2016 RLV IEC 2016
4.6
ground (reference) plane (GRP)
a flat conductive surface whose potential is used as a common reference for the magnetic
field generator and the auxiliary equipment (the ground plane can be used to close the loop of
the induction coil, as in figure 5)
[IEV 161-04-36, modified]
4.7
decoupling network, back filter
electrical circuit intended to avoid reciprocal influence with other equipment not submitted to
the magnetic field test
4.8
burst
a sequence of a limited number of distinct pulses or an oscillation of limited duration
[IEV 161-02-07]
3.1.7
reference ground
part of the Earth considered as conductive, the electrical potential of which is conventionally
taken as zero, being outside the zone of influence of any earthing (grounding) arrangement
[SOURCE: IEC 60050-195:1998, 195-01-01]
3.1.8
system
set of interdependent elements constituted to achieve a given objective by performing a
specified function
Note 1 to entry: The system is considered to be separated from the environment and other external systems by an
imaginary surface which cuts the links between them and the considered system. Through these links, the system
is affected by the environment, is acted upon by the external systems, or acts itself on the environment or the
external systems.
3.1.9
transient, adjective and noun
pertaining to or designating a phenomenon or a quantity which varies between two
consecutive steady states during a time interval short compared to the time scale of interest
[SOURCE: IEC 60050-161:1990, 161-02-01]
3.1.10
verification
set of operations which is used to check the test equipment system (e.g. the test generator
and its interconnecting cables) to demonstrate that the test system is functioning
Note 1 to entry: The methods used for verification may be different from those used for calibration.
Note 2 to entry: For the purposes of this basic EMC standard this definition is different from the definition given in
IEC 60050-311:2001, 311-01-13.
3.2 Abbreviations
AE Auxiliary equipment
EMC Electromagnetic compatibility
EUT Equipment under test
MU Measurement uncertainty
PE Protective earth
RGP Reference ground plane
4 General
Damped oscillatory magnetic fields are generated by the switching of H.V. bus-bars by
isolators or disconnectors. The magnetic fields to which equipment is subjected may can
influence the reliable operation of equipment and systems.
The following tests are intended to demonstrate the immunity of equipment when subjected
to damped oscillatory magnetic field related to the specific location and installation condition
of the equipment (e.g. proximity of equipment to the disturbance source).
The test is mainly applicable to electronic equipment to be installed in H.V. sub-stations.
Possible other applications may be considered by the product committees.
The wave shape of the test field consists of corresponds to a damped oscillatory wave (see
Figure 2). The characteristics are given in 6.2.2.
Information on the oscillation frequency is given in Annex C.
5 Test levels
The preferred range of test levels is given in Table 1.
Table 1 – Test levels
Level Damped oscillatory magnetic field strength
A/m (peak)
1 not applicable
2 not applicable
3 10
4 30
5 100
a
X special
NOTE The magnetic field strength is expressed in A/m; 1 A/m corresponds to
a free space magnetic flux density of 1,26 µT.
a
"n.a." = not applicable.
"x" is an open can be any level, above, below or in between the others.
This level, as well the duration of the test, can be given in the product
specification shall be specified in the dedicated equipment specification.
Information on the selection of the test levels is given in Annex C.
Information on actual levels is given in annex D.
The duration of the test is 2 s.
The test levels shall be selected according to the installation conditions. Classes of
installation are given in Annex B.
6 Test equipment
The test magnetic field is obtained by a current flowing in an induction coil; the application of
the test field to the EUT is by the immersion method.
An example of application of the immersion method is given in figure 1.
– 12 – IEC 61000-4-10:2016 RLV IEC 2016
The test equipment includes the current source (test generator), the induction coil and
auxiliary test instrumentation.
6.1 Test generator
The generator, with the output waveform corresponding to the test magnetic field, shall be
able to deliver the required current in the induction coils specified in 6.2.
The generator power capability shall therefore be dimensioned by taking into account the coil
impedance; the inductance may range from 2,5 µH for the 1 m standard coil, to several µH
(e.g. 6 µH) for a rectangular induction coil (1 m × 2,6 m, see 6.2).
The specifications of the generator are:
– current capability, determined by the maximum selected test level and induction coil factor
(see 6.2.2 and annex A), ranging from 0,87 (1 m standard coil for testing table-top or small
equipment to 0,66 (rectangular induction coil, 1 m × 2,6 m, for testing floor-standing or
large equipment).
– operability in short-circuit condition;
– low output terminal connected to the earth terminal (for connection to the safety earth of
the laboratory);
– precautions to prevent the emission of large disturbances that may be injected in the
power supply network or may influence the test results.
The characteristics and performances of the current source or test generator for the field
considered in this standard are given in 6.1.1.
6.1.1 Characteristics and performances of the test generator
The test generator is a repetitive damped sinusoid current generator with characteristics as
follows:
Specifications
Oscillation frequency: 0,1 MHz and 1 MHz ± 10 %
Decay rate: 50 % of the peak value after 3 to 6 cycles
Repetition rate: at least 40 transients/s at 0,1 MHz, 400 transients/s at 1 MHz
Test duration: 2 s (+10 %, –0 %) or continuous
Output current range: from 10 A to 100 A, divided by the coil factor
NOTE The output current range for the standard coil is from 12 A to 120 A.
The waveform of the output current is given in figure 2.
The schematic circuit of the generator is given in figure 3.
6.1.2 Verification of the characteristics of the test generator
In order to compare the results for different test generators, the essential characteristics of
the output current parameters shall be verified.
The output current shall be verified with the generator connected to the standard induction
coil specified in 6.2.1 a); the connection shall be realized by twisted conductors or coaxial
cable of up to 3 m length and suitable cross-section.
The emission of disturbances by the generator shall be verified (see 6.1).
The characteristics to be verified are:
– output current peak value;
– damping;
– frequency of oscillation;
– repetition rate.
The verifications shall be carried out with a current probe and oscilloscope or other equivalent
measurement instrumentation with 10 MHz minimum bandwidth.
The accuracy of the measurements shall be ±10 %.
6.2 Induction coil
6.2.1 Characteristics of the induction coil
The induction coil, connected to the test generator previously defined (see 6.1.1), shall
generate a field strength corresponding to the selected test level and the defined
homogeneity.
The induction coil shall be made of copper, aluminium or any conductive non-magnetic
material, of such cross-section and mechanical arrangement as to facilitate its stable
positioning during the tests.
The coil shall be "single turn" and have a suitable current capability, as necessary for the
selected test level.
The induction coil shall be adequately dimensioned to surround the EUT (three orthogonal
positions).
Depending on the size of the EUT, induction coils of different dimensions may be used.
The dimensions recommended below are suitable for the generation of magnetic field over the
whole volume of the EUTs (table-top equipment or floor-standing equipment), with an
acceptable variation of ±3 dB.
The characteristics of induction coils in respect of the magnetic field distribution are given in
annex B.
a) Induction coil for table-top equipment
The induction coil of standard dimensions for testing small equipment (e.g. computer
monitors, watt-hour meters, transmitters for process control, etc.) has a square (or
circular) form with 1 m side (or diameter), made of a conductor of relatively small cross-
section.
The test volume of the standard square coil is 0,6 m × 0,6 m × 0,5 m (height).
A double coil of standard size (Helmholtz coil) could be used in order to obtain a field
homogeneity better than 3 dB or for testing larger EUTs.
The double coil (Helmholtz coil) shall be comprised of two or more series of turns, properly
spaced (see figure 7, figure B.4, figure B.5).
The test volume of a double standard size coil, 0,8 m spaced, for a 3 dB homogeneity
is 0,6 m × 0,6 m × 1 m (height).
For example, the Helmholtz coils, for a 0,2 dB inhomogeneity, have dimensions and
separation distances as given in figure 7.
b) Induction coil for floor-standing equipment
– 14 – IEC 61000-4-10:2016 RLV IEC 2016
Induction coils shall be made according to the dimensions of the EUT and the different
field polarizations.
The coil shall be able to envelop the EUT; the coil dimensions shall be such as to give a
minimum distance of coil conductors to EUT walls equal to 1/3 of the dimension of the
EUT considered.
The coils shall be made of conductors of relatively small cross-section.
NOTE Due to the possible large dimensions of EUTs, the coils may be made of "C" or "T" sections in order to
have sufficient mechanical rigidity.
The test volume is determined by the testing area of the coil (60 % × 60 % of each side)
multiplied by a depth corresponding to 50 % of the shorter side of the coil.
6.2.2 Calibration of the induction coil, coil factor
In order to make it possible to compare the test results from different test equipment, the
induction coils shall be calibrated in their operating condition, before conducting the test
(without the EUT, in free space condition).
An induction coil of the correct dimensions for the EUT dimensions, shall be positioned at
1 m minimum distance from the wall of the laboratory and any magnetic material, by using
insulating supports, and shall be connected to the test generator as prescribed in 6.1.2.
Appropriate magnetic field sensors (B.W. > 10 MHz), with dynamics and frequency response
in accordance with the oscillatory field, shall be used to verify the magnetic field strength
generated by the induction coil.
The field sensor shall be positioned at the centre of the induction coil (without the EUT) and
with suitable orientation to detect the maximum value of the field.
The current in the induction coil shall be adjusted to obtain the field strength specified by the
test level.
The calibration shall be carried out at power frequency: the current value that generates a
given field strength shall be used for the damped oscillatory test of the present standard.
The calibration procedure shall be carried out on the test generator and induction coils.
The coil factor is determined (and verified) by the above procedure.
The coil factor gives the current value to be injected in the coil to obtain the required test
magnetic field (H/l).
Information on the measurement of the test magnetic field is given in annex A.
6.3 Test and auxiliary instrumentation
6.3.1 Test instrumentation
The test instrumentation includes:
– current measuring system (sensors and instrument) for setting and measuring the current
injected in the induction coil;
– termination networks, back filters, etc., on power supply, control and signal lines.
The termination network gives a defined impedance of 50 Ω to earth for all the external
circuits connected to the EUT terminals. It may be represented by the line impedance
stabilization network for power supply circuits, coupling/decoupling network, or resistor-
capacitor series for input/output control and signal circuits. These networks shall be described
in the test plan. The termination networks, back filters, etc. shall be compatible with the
operating signals.
Back filters shall be used in the connections to the simulator (see 6.3.2).
The current measuring system is a calibrated current probe or shunt; the transient current
measurement instrumentation shall have a bandwidth up to 10 MHz.
The accuracy of the measurement instrumentation shall be ±10 %.
6.3.2 Auxiliary instrumentation
The auxiliary instrumentation comprises a simulator and any other instrument necessary for
the operation and verification of the EUT functional specifications.
6 Test instrumentation
6.1 General
The test system comprises the damped oscillatory wave generator and the induction coil for a
table-top test setup and, in addition, an RGP for a floor-standing test setup.
6.2 Damped oscillatory wave
...
IEC 61000-4-10 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-10: Testing and measurement techniques – Damped oscillatory magnetic
field immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-10: Techniques d'essai et de mesure – Essai d'immunité du champ
magnétique oscillatoire amorti
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 l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
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.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) 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 IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 15
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC
65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte,
et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les
publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées.
antérieures extraites des publications des CE 37, 77, 86 et
CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues.
Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email.
publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 61000-4-10 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-10: Testing and measurement techniques – Damped oscillatory magnetic
field immunity test
Compatibilité électromagnétique (CEM) –
Partie 4-10: Techniques d'essai et de mesure – Essai d'immunité du champ
magnétique oscillatoire amorti
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-3501-0
– 2 – IEC 61000-4-10:2016 IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope and object . 8
2 Normative references. 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 10
4 General . 10
5 Test levels . 10
6 Test instrumentation . 11
6.1 General . 11
6.2 Damped oscillatory wave generator . 11
6.2.1 General . 11
6.2.2 Performance characteristics of the generator connected to the
standard induction coil . 12
6.3 Standard induction coil . 14
6.4 Calibration of the test system . 14
7 Test setup . 15
7.1 Test equipment . 15
7.2 Verification of the test instrumentation . 15
7.3 Test setup for table-top EUT . 16
7.4 Test setup for floor standing EUT . 16
7.5 Test setup for damped oscillatory field applied in-situ . 18
8 Test procedure . 18
8.1 General . 18
8.2 Laboratory reference conditions . 18
8.2.1 Climatic conditions . 18
8.2.2 Electromagnetic conditions . 18
8.3 Execution of the test . 19
9 Evaluation of test results . 19
10 Test report. 20
Annex A (informative) Information on the field distribution of standard induction coils . 21
A.1 General . 21
A.2 Determination of the coil factor . 21
A.2.1 General . 21
A.2.2 Coil factor calculation . 21
A.3 1 m × 1 m standard induction coil . 22
A.4 1 m × 2,6 m standard induction coil with reference ground plane . 23
A.5 1 m × 2,6 m standard induction coil without reference ground plane . 24
Annex B (informative) Selection of the test levels . 26
Annex C (informative) Damped oscillatory magnetic field frequency . 28
Annex D (informative) Measurement uncertainty (MU) considerations . 29
D.1 General . 29
D.2 Legend . 29
D.3 Uncertainty contributors to the peak current and to the damped oscillatory
magnetic field measurement uncertainty . 29
D.4 Uncertainty of peak current and damped oscillatory magnetic field calibration . 30
D.4.1 General . 30
D.4.2 Peak current . 30
D.4.3 Further MU contributions to amplitude and time measurements . 32
D.4.4 Rise time of the step response and bandwidth of the frequency
response of the measuring system . 32
D.4.5 Impulse peak distortion due to the limited bandwidth of the measuring
system . 33
D.5 Application of uncertainties in the damped oscillatory wave generator
compliance criterion . 34
Annex E (informative) 3D numerical simulations . 35
E.1 General . 35
E.2 Simulations . 35
E.3 Comments . 35
Bibliography . 41
Figure 1 – Simplified schematic circuit of the test generator for damped oscillatory
magnetic field . 12
Figure 2 – Waveform of short-circuit current in the standard coils . 13
Figure 3 – Waveform of short-circuit current showing the repetition time T . 13
rep
Figure 4 – Example of a current measurement of standard induction coils . 14
Figure 5 – Example of test setup for table-top equipment . 16
Figure 6 – Example of test setup for floor standing equipment showing the horizontal
orthogonal plane . 17
Figure 7 – Example of test setup for floor standing equipment showing the vertical
orthogonal plane . 17
Figure 8 – Example of test setup using the proximity method . 18
Figure A.1 – Rectangular induction coil with sides a + b and c . 22
Figure A.2 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane
for the 1 m × 1 m induction coil . 22
Figure A.3 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-z plane for the 1 m × 1 m induction coil . 23
Figure A.4 – +3 dB isoline for the magnetic field strength (magnitude) in the x-z plane
for the 1 m × 2,6 m induction coil with reference ground plane . 23
Figure A.5 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-y plane for the 1 m × 2,6 m induction coil with reference ground plane . 24
Figure A.6 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane
for the 1 m × 2,6 m induction coil without reference ground plane . 24
Figure A.7 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in
the x-z plane for the 1 m × 2,6 m induction coil without reference ground plane . 25
Figure E.1 – Current with period of 1 µs and H-field in the center of the 1 m × 1 m
standard induction coil . 36
Figure E.2 – Hx–field along the side of 1 m × 1 m standard induction coil in A/m . 36
Figure E.3 – Hx–field in direction x perpendicular to the plane of the 1 m × 1 m
standard induction coil . 37
Figure E.4 – Hx–field along the side in dB for 1 m × 1 m standard induction coil . 37
– 4 – IEC 61000-4-10:2016 IEC 2016
Figure E.5 – Hx–field along the diagonal in dB for the 1 m × 1 m standard induction coil . 38
Figure E.6 – Hx–field plot on y-z plane for the 1 m × 1 m standard induction coil . 38
Figure E.7 – Hx-field plot on x-y plane for the 1 m × 1 m standard induction coil . 39
Figure E.8 – Hx–field along the vertical middle line in dB for the 1 m × 2,6 m standard
induction coil . 39
Figure E.9 – Hx–field 2D–plot on y-z plane for the 1 m × 2,6 m standard induction coil . 40
Figure E.10 – Hx–field 2D–plot on x-y plane at z = 0,5 m for the 1 m × 2,6 m standard
induction coil . 40
Table 1 – Test levels . 11
Table 2 – Peak current specifications of the test system . 15
Table 3 – Waveform specifications of the test system . 15
Table D.1 – Example of uncertainty budget for the peak of the damped oscillatory
current impulse (I ) . 31
p
Table D.2 – α factor (see equation (D.6)) of different unidirectional impulse responses
corresponding to the same bandwidth of the system B . 33
Table D.3 – β factor (equation (D.12)) of the damped oscillatory waveform . 34
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 4-10: Testing and measurement techniques –
Damped oscillatory magnetic field immunity test
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 61000-4-10 has been prepared by subcommittee 77B: High
frequency phenomena, of IEC technical committee 77: Electromagnetic compatibility.
It forms Part 4-10 of the IEC 61000 series. It has the status of a basic EMC publication in
accordance with IEC Guide 107.
This second edition cancels and replaces the first edition published in 1993 and Amendment
1:2000. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) new Annex A on induction coil field distribution;
b) new Annex D on measurement uncertainty;
– 6 – IEC 61000-4-10:2016 IEC 2016
c) new Annex E for numerical simulations;
d) calibration using current measurement has been addressed in this edition.
The text of this standard is based on the following documents:
CDV Report on voting
77B/730/CDV 77B/746A/RVC
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.
A list of all parts in the IEC 61000 series, published under the general title Electromagnetic
compatibility (EMC), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
IEC 61000 is published in separate parts according to the following structure:
Part 1: General
General considerations (introduction, fundamental principles)
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of the environment
Compatibility levels
Part 3: Limits
Emission limits
Immunity limits (insofar as they do not fall under the responsibility of the product
committees)
Part 4: Testing and measurement techniques
Measurement techniques
Testing techniques
Part 5: Installation and mitigation guidelines
Installation guidelines
Mitigation methods and devices
Part 6: Generic standards
Part 9: Miscellaneous
Each part is further subdivided into several parts, published either as international standards
or as technical specifications or technical reports, some of which have already been published
as sections. Others will be published with the part number followed by a dash and a second
number identifying the subdivision (example: IEC 61000-6-1).
This part is an international standard which gives immunity requirements and test procedures
related to "damped oscillatory magnetic field".
– 8 – IEC 61000-4-10:2016 IEC 2016
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 4-10: Testing and measurement techniques –
Damped oscillatory magnetic field immunity test
1 Scope and object
This part of IEC 61000 specifies the immunity requirements, test methods, and range of
recommended test levels for equipment subjected to damped oscillatory magnetic
disturbances related to medium voltage and high voltage sub-stations.
The test defined in this standard is applied to equipment which is intended to be installed in
locations where the phenomenon as specified in Clause 4 will be encountered.
This standard does not specify disturbances due to capacitive or inductive coupling in cables
or other parts of the field installation. IEC 61000-4-18, which deals with conducted
disturbances, covers these aspects.
The object of this standard is to establish a common and reproducible basis for evaluating the
performance of electrical and electronic equipment for medium voltage and high voltage sub-
stations when subjected to damped oscillatory magnetic fields.
The test is mainly applicable to electronic equipment to be installed in H.V. sub-stations.
Power plants, switchgear installations, smart grid systems may also be applicable to this
standard and may be considered by product committees.
NOTE 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 is applied or not, and if applied, they are responsible for determining the appropriate test levels and
performance criteria. TC 77 and its sub-committees are prepared to co-operate with product committees in the
evaluation of the value of particular immunity test levels for their products.
This standard defines:
– a range of test levels;
– test equipment;
– test setups;
– test procedures.
2 Normative references
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.
IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV) (available at
www.electropedia.org)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050 as well as
the following apply.
3.1.1
calibration
set of operations which establishes, by reference to standards, the relationship which exists,
under specified conditions, between an indication and a result of a measurement
Note 1 to entry: This term is based on the "uncertainty" approach.
Note 2 to entry: The relationship between the indications and the results of measurement can be expressed, in
principle, by a calibration diagram.
[SOURCE: IEC 60050-311:2001, 311-01-09]
3.1.2
damped oscillatory wave generator
generator delivering a damped oscillation whose frequency can be set to 100 kHz or 1 MHz
and whose damping time constant is five periods
3.1.3
immunity
ability of a device, equipment or system to perform without degradation in the presence of an
electromagnetic disturbance
[SOURCE: IEC 60050-161:1990, 161-01-20]
3.1.4
induction coil
conductor loop of defined shape and dimensions, in which a current flows, generating a
magnetic field of defined uniformity in a defined volume
3.1.5
induction coil factor
ratio between the magnetic field strength generated by an induction coil of given dimensions
and the corresponding current value
Note 1 to entry: The field is that measured at the centre of the coil plane, without the EUT.
3.1.6
proximity method
method of application of the magnetic field to the EUT, where a small induction coil is moved
along the side of the EUT in order to detect particularly sensitive areas
3.1.7
reference ground
part of the Earth considered as conductive, the electrical potential of which is conventionally
taken as zero, being outside the zone of influence of any earthing (grounding) arrangement
[SOURCE: IEC 60050-195:1998, 195-01-01]
– 10 – IEC 61000-4-10:2016 IEC 2016
3.1.8
system
set of interdependent elements constituted to achieve a given objective by performing a
specified function
Note 1 to entry: The system is considered to be separated from the environment and other external systems by an
imaginary surface which cuts the links between them and the considered system. Through these links, the system
is affected by the environment, is acted upon by the external systems, or acts itself on the environment or the
external systems.
3.1.9
transient, adjective and noun
pertaining to or designating a phenomenon or a quantity which varies between two
consecutive steady states during a time interval short compared to the time scale of interest
[SOURCE: IEC 60050-161:1990, 161-02-01]
3.1.10
verification
set of operations which is used to check the test equipment system (e.g. the test generator
and its interconnecting cables) to demonstrate that the test system is functioning
Note 1 to entry: The methods used for verification may be different from those used for calibration.
Note 2 to entry: For the purposes of this basic EMC standard this definition is different from the definition given in
IEC 60050-311:2001, 311-01-13.
3.2 Abbreviations
AE Auxiliary equipment
EMC Electromagnetic compatibility
EUT Equipment under test
MU Measurement uncertainty
PE Protective earth
RGP Reference ground plane
4 General
Damped oscillatory magnetic fields are generated by the switching of H.V. bus-bars by
isolators or disconnectors. The magnetic fields to which equipment is subjected can influence
the reliable operation of equipment and systems.
The following tests are intended to demonstrate the immunity of equipment when subjected
to damped oscillatory magnetic field related to the specific location and installation condition
of the equipment (e.g. proximity of equipment to the disturbance source).
The wave shape of the test field corresponds to a damped oscillatory wave (see Figure 2).
The characteristics are given in 6.2.2.
Information on the oscillation frequency is given in Annex C.
5 Test levels
The preferred range of test levels is given in Table 1.
Table 1 – Test levels
Level Damped oscillatory magnetic field strength
A/m (peak)
1 not applicable
2 not applicable
3 10
4 30
5 100
a
X special
NOTE The magnetic field strength is expressed in A/m; 1 A/m corresponds to
a free space magnetic flux density of 1,26 µT.
a
"X" can be any level, above, below or in between the others. This level, as
well the duration of the test, shall be specified in the dedicated equipment
specification.
The test levels shall be selected according to the installation conditions. Classes of
installation are given in Annex B.
6 Test instrumentation
6.1 General
The test system comprises the damped oscillatory wave generator and the induction coil for a
table-top test setup and, in addition, an RGP for a floor-standing test setup.
6.2 Damped oscillatory wave generator
6.2.1 General
The damped oscillatory wave generator shall be able to deliver the required impulse current to
the induction coils specified in 6.3.
NOTE For this application, a modified version of a damped oscillatory wave generator similar to the generator
mentioned in IEC 61000-4-18 is used as a current source.
The waveform is specified as a short-circuit current and therefore shall be measured with the
induction coil connected.
A simplified circuit diagram of the generator is given in Figure 1.
– 12 – IEC 61000-4-10:2016 IEC 2016
C
R
c
S
S
To induction
L
U
coil
C C
1 2
IEC
U: High voltage source R : Charging resistor
c
C: Control duration L: Coil oscillation circuit
S Frequency selector S Duration selector
1 2
C , C : Capacitors oscillation circuit (switchable from 0,1 MHz to 1 MHz)
1 2
Figure 1 – Simplified schematic circuit of the test generator
for damped oscillatory magnetic field
6.2.2 Performance characteristics of the generator connected to the standard
induction coil
The performance characteristics below are applicable for the generator connected to the
standard induction coils outlined in 6.3.
Oscillation period see Table 3
Current in the coils (Pk value) see Table 2
Waveform of the damped oscillatory magnetic field see Figure 2
Decay rate D , D Pk shall be > 50 % of the Pk value and Pk
r1 r2 5 1 10
shall be < 50 % of the Pk value
Repetition rate 1/T (see Figure 3) 40/s ± 10 % for 100 kHz and 400/s ± 10 % for
rep
1 MHz
Test duration not less than 2 s
Phase shifting no requirement
Oscillation frequency is defined as the reciprocal of the period of the first and third zero
crossings after the initial peak. This period is shown as T in Figure 2.
Pk
Pk
Pk
t
Pk
Pk
T
IEC
Key
T = 1 µs (1 MHz) or 10 µs (0,1 MHz)
Figure 2 – Waveform of short-circuit current in the standard coils
t
T
rep
IEC
Figure 3 – Waveform of short-circuit current showing the repetition time T
rep
The formula of the ideal waveform of Figure 2, I (t), is as follows:
DOS
nh
t
t
i
1h
I (t) = K sin(βt)
DOS i
t
KH nh
t
t
2h
1+ e
t
1h
with
t t nh
1h 2h
− nh
t t
2h 1h
KH = e
where the parameters for oscillation period T = 1 µs are:
K = 1; i = 0,963; t = 0,08 µs; t = 4,8 µs; nh = 2,1; β = 6,27 × 10 rad/s:
i 1 1h 2h
I (t)
DOS
I
– 14 – IEC 61000-4-10:2016 IEC 2016
and the parameters for the oscillation period T = 10 µs are:
K = 1; i = 0,963; t = 0,8 µs; t = 48 µs; nh = 2,1; β = 0,627 × 10 rad/s;
i 1 1h 2h
6.3 Standard induction coil
For the two single-turn standard coils of 1 m x 1 m and 1 m x 2,6 m, the field distribution is
known and shown in Annex A. Therefore, no field verification or field calibration is necessary;
the current measurement as shown in Figure 4 is sufficient.
Oscilloscope
Attenuator
Current probe
Damped oscillatory
wave generator
IEC
Figure 4 – Example of a current measurement of standard induction coils
The induction coil shall be made of copper, aluminium or any conductive non-magnetic
material, of such cross-section and mechanical arrangement as to facilitate its stable
positioning during the tests.
The characteristics of induction coils with respect to the magnetic field distribution are given
in Annex A.
6.4 Calibration of the test system
The essential characteristics of the test system shall be calibrated by a current measurement
(see Figure 4).
The output current shall be verified with the generator connected to the standard induction
coil specified in 6.3. The connection shall be realized by twisted conductors or a coaxial cable
of up to 3 m length and a suitable cross-section.
The specifications given in Table 3 are not applicable for calibrations performed at test level 5
with the 1 m × 2,6 m standard induction coil connected. In this case, the calibration shall be
performed by only using the 1 m × 1 m standard induction coil.
The following specifications given in Table 2 and Table 3 shall be verified.
Table 2 – Peak current specifications of the test system
Test
Peak current I ± 20 %
A
level
System using 1 m × 1 m System using 1 m × 2,6 m
standard induction coil standard induction coil
1 not applicable not applicable
2 not applicable not applicable
3 11,1 15,2
4 33,3 45,5
5 111 see note 2
X special/0,9 special/0,66
NOTE 1 The values 0,9 and 0,66 are the calculated coil factors of standard
induction coils.
NOTE 2 The calculated value is 152; however, there is currently no
commercial generator available.
Table 3 – Waveform specifications of the test system
Calibration items Oscillation frequency
100 kHz 1 MHz
Oscillation period T = 10 µs ± 1 µs T = 1 µs ± 0,1 µs
Repetition time of the pulses
T = 25 ms ± 2,5 ms T = 2,5 ms ± 0,25 ms
rep rep
Decay rate of one pulse
D = I(PK )÷ I(PK ) > 50 % D = I(PK )÷ I(PK ) > 50 %
r1 5 1 r1 5 1
< 50 % < 50 %
D = I(PK )÷ I(PK ) D = I(PK )÷ I(PK )
r2 10 1 r2 10 1
The calibrations shall be performed at all levels which are used by laboratories.
The calibrations shall be carried out with a current probe and oscilloscope or other equivalent
measurement instrumentation with a 10 MHz minimum bandwidth.
7 Test setup
7.1 Test equipment
The following equipment is part of the test setup:
– equipment under test (EUT);
– auxiliary equipment (AE) when required;
– cables (of specified type and length);
– damped oscillatory wave generator;
– standard induction coil;
– RGP in case of testing floor standing equipment.
7.2 Verification of the test instrumentation
The purpose of verification is to ensure that the test setup is operating correctly. The test
setup includes:
– the damped oscillatory wave generator;
– 16 – IEC 61000-4-10:2016 IEC 2016
– the induction coil;
– the interconnection cables of the test equipment.
To verify that the system is functioning correctly, the following signal should be checked:
– impulse present at the standard induction coil terminals.
It is sufficient to verify that the impulse is present at any level by using suitable measuring
equipment (e.g. current probe, oscilloscope).
NOTE Test laboratories can define an internal control reference value assigned to this verification procedure.
7.3 Test setup for table-top EUT
Table-top EUTs shall be placed on a non-conductive table. The 1 m × 1 m standard induction
coil may be used for testing EUTs with dimensions up to 0,6 m × 0,6 m × 0,5 m (L × W × H).
The 1 m × 2,6 m standard induction coil may be used for testing EUTs with dimensions up to
0,6 m × 0,6 m × 2 m (L × W × H).
The induction coil shall be positioned in three orthogonal orientations.
When an EUT does not fit into the induction coil of 1 m x 2,6 m, the proximity method (see
7.4) shall be applied.
It is not necessary to maximize the impact of cables during this test. The proximity of the
cables to the induction coil can impact the results so the cables shall be routed to minimize
this impact. The minimized cabling dimension shall be incorporated into the determination of
the maximum size of an EUT that can be tested.
An RGP is not required below the EUT (see Figure 5 below). The induction coil shall be kept
at least 0,5 m from any conducting surfaces, for example the walls and floor of a shielded
enclosure.
Twisted
EUT
cable length
H
maximum 3 m
Damped oscillatory
wave generator
IEC
Figure 5 – Example of test setup for table-top equipment
7.4 Test setup for floor standing EUT
The standard induction coil for testing floor standing equipment (e.g. racks) has a rectangular
shape of 1 m × 2,6 m where one short side may be the RGP for large sized equipment (see
Figure 7). The 1 m × 1 m induction coil can be used for floor standing equipment with the
maximum dimensions of 0,6 m × 0,6 m.
The RGP shall have a minimum thickness of 0,65 mm and a minimum size of 1 m × 1 m. The
EUT shall be insulated from the RGP.
Damped
EUT
oscillatory
wave generator
H
RGP
IEC
Figure 6 – Example of test setup for floor standing equipment
showing the horizontal orthogonal plane
For floor standing equipment (e.g. cabinets) where the top of the EUT is greater than 0,75 m
from the RGP, more than one position shall be tested. In any case, the induction coil shown in
Figure 6 shall not be placed below 0,5 m. Figure 7 shows an example for testing with a
vertical orthogonal plane.
Damped
EUT
oscillatory
wave generator
H
RGP
IEC
Figure 7 – Example of test setup for floor standing equipment
showing the vertical orthogonal plane
The test volume of the rectangular coil is 0,6 m × 0,6 m × 2 m (L × W × H).
When an EUT does not fit into the rectangular coil of 1 m × 2,6 m, the proximity method (see
Figure 8 and 7.5 for more detailed information) shall be applied.
It is not necessary to maximize the impact of cables during this test. The proximity of the
cables to the induction coil can impact the results so the cables shall be routed to minimize
this impact. The minimized cabling dimension shall be incorporated into the determination of
the maximum size of the EUT that can be tested.
1,5 m
1,0 m
0,5 m
– 18 – IEC 61000-4-10:2016 IEC 2016
10 cm
EUT
H
H H
10 cm H
IEC
Figure 8 – Example of test setup using the proximity method
7.5 Test setup for damped oscillatory field applied in-situ
In-situ testing is generally the only practical test method available for large machinery or
similar equipment. During in-situ testing, an RGP is normally not available. Therefore the
proximity method is the only practical test method without the RGP in place. Figure 8 gives an
example for a test setup for in-situ testing. The 1 m × 1 m standard induction coil should be
used when examining EUTs using the proximity method. Further, it is necessary that the
standard induction coil is isolated from the EUT. The distance between the standard induction
coil and the EUT shall be (10 ± 1) cm.
NOTE The distance has been defined to ensure the same field strength as in the center of the standard induction
coil.
8 Test procedure
8.1 General
The test procedure includes:
– the verification of the test instrumentation according to 7.2;
– the establishment of the laboratory reference conditions;
– the confirmation of the correct operation of the EUT;
– the execution of the test;
– the evaluation of the test results (see Clause 9).
8.2 Laboratory reference conditions
8.2.1 Climatic conditions
Unless otherwise specified in generic, product-family or product standards, the climatic
conditions in the laboratory shall be within any limits specified for the operation of the EUT
and the test equipment by their respective manufacturers.
Tests shall not be performed if the relative
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...