EN IEC 62764-1:2022

SLOVENSKI STANDARD
01-december-2022
Postopki merjenja nivojev magnetnih polj, ki jih generirata elektronska in
električna oprema v motornih vozilih, glede na izpostavljenost ljudi - 1. del:
Nizkofrekvenčno magnetno polje
Measurement procedures of magnetic field levels generated by electronic and electrical
equipment in the automotive environment with respect to human exposure - Part 1: Low
frequency magnetic fields
Measurement procedures of magnetic field levels generated by electronic and electrical
apparatus in the railway environment with respect to human exposure
Ta slovenski standard je istoveten z: EN IEC 62764-1:2022
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62764-1

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 17.220.20
English Version
Measurement procedures of magnetic field levels generated by
electronic and electrical equipment in the automotive
environment with respect to human exposure - Part 1: Low-
frequency magnetic fields
(IEC 62764-1:2022)
Procédures de mesure de l'exposition humaine aux niveaux Verfahren für die Messung von magnetischen Feldern, die
de champs magnétiques générés par les accessoires von elektrischen und elektronischen Geräten und
électroniques et électriques dans l'environnement Einrichtungen in der Straßenfahrzeugumgebung erzeugt
automobile - Partie 1: Champs magnétiques à basse werden, in Bezug auf die Exposition von Personen - Teil 1:
fréquence Niederfrequente magnetische Felder
(IEC 62764-1:2022) (IEC 62764-1:2022)
This European Standard was approved by CENELEC on 2022-10-20. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62764-1:2022 E

European foreword
The text of document 106/575/FDIS, future edition 1 of IEC 62764-1, prepared by IEC/TC 106
"Methods for the assessment of electric, magnetic and electromagnetic fields associated with human
exposure" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-07-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-10-20
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62764-1:2022 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 standard indicated:
ISO/IEC 17025 NOTE Harmonized as EN ISO/IEC 17025
IEC 62226-1 NOTE Harmonized as EN 62226-1
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61786-1 - Measurement of DC magnetic, AC EN 61786-1 -
magnetic and AC electric fields from 1 Hz
to 100 kHz with regard to exposure of
human beings - Part 1: Requirements for
measuring instruments
IEC 62311 2019 Assessment of electronic and electrical EN IEC 62311 2020
equipment related to human exposure
restrictions for electromagnetic fields (0 Hz
to 300 GHz)
IEC 62764-1 ®
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Measurement procedures of magnetic field levels generated by electronic and

electrical equipment in the automotive environment with respect to human

exposure –
Part 1: Low-frequency magnetic fields

Procédures de mesure de l'exposition humaine aux niveaux de champs

magnétiques générés par les accessoires électroniques et électriques dans

l'environnement automobile –
Partie 1: Champs magnétiques à basse fréquence

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-5607-7

– 2 – IEC 62764-1:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 9
4 Measurement procedure . 9
4.1 Measurement phases . 9
4.2 Measuring conditions . 10
4.3 Test site . 10
4.4 Vehicle set-up . 10
4.5 Measurement locations . 10
4.5.1 General . 10
4.5.2 Inside the vehicle . 11
4.5.3 Outside the vehicle . 12
5 Measurement technique . 12
5.1 Measuring equipment . 12
5.2 Measurement of the magnetic field exposure . 12
6 Measurement procedure . 12
6.1 Vehicle in stationary mode . 12
6.1.1 General . 12
6.1.2 Phase 1: vehicle preparation and set-up . 12
6.1.3 Phase 2: vehicle measurement . 13
6.2 Vehicle in driving mode . 13
6.2.1 General . 13
6.2.2 Phase 1: vehicle preparation and set-up . 13
6.2.3 Phase 2: vehicle measurement (at constant speed) . 13
6.2.4 Phase 3: additional measurements . 14
6.3 Vehicle in dynamic mode . 14
6.3.1 General . 14
6.3.2 Phase 1: vehicle preparation and set-up . 14
6.3.3 Phase 2: vehicle measurement . 14
6.4 Vehicle in plug-in charging mode . 15
6.4.1 General . 15
6.4.2 Phase 1: vehicle preparation and set-up . 15
6.4.3 Phase 2: vehicle measurement . 15
7 Assessment of measurement uncertainty . 16
8 Test report . 16
9 Exposure assessment . 16
Annex A (informative) Practical measurement advice . 17
Annex B (informative) Maximum extents of measurement volumes inside the vehicle . 18
B.1 Motivation . 18
B.2 Anthropometrical information . 18
B.3 Maximum extents of measurement volumes . 19

IEC 62764-1:2022 © IEC 2022 – 3 –
Annex C (informative) Measurement errors due to source proximity and probe
orientation . 20
C.1 Background. 20
C.2 Magnitude of proximity and orientation related errors . 20
C.3 Dipole source contributions to uncertainty parameters . 22
Annex D (informative) Uncertainty estimation . 24
D.1 General . 24
D.2 Uncertainty budget . 24
Annex E (informative) Justification of measurement distances . 26
E.1 General . 26
E.2 Models and numerical methods . 26
E.2.1 Vehicle model and exposure scenarios . 26
E.2.2 Human model . 27
E.2.3 Computational method . 28
E.3 Computational results . 28
E.4 Conclusions . 32
Annex F (informative) Magnetic field levels during acceleration and deceleration . 33
F.1 Example results . 33
F.2 Test description . 33
F.3 Conclusion . 33
Bibliography . 35

Figure 1 – Example of test volumes taking account of all body parts for a left-hand
drive vehicle . 11
Figure 2 – Plug-in charging cable positioning . 15
Figure A.1 – Disc spacer around two types of measurement probes . 17
Figure A.2 – Hemispherical spacer around two types of measurement probes . 17
Figure B.1 – Summary of relevant anthropometrical data . 18
Figure C.1 – Span (error bars) and mode (O) of error distributions for magnetic dipole . 21
Figure C.2 – Span (error bars) and mode (O) of error distributions for linear current . 21
Figure C.3 – Comparison of predicted error distribution percentiles (O) and fitted
models (lines) as a function of s (distance/radius) . 23
Figure E.1 – Schematic explanation and geometry of the vehicle cabin . 27
Figure E.2 – Schematic diagram of electrical motor . 27
Figure E.3 – Definition of each part of the human body model . 28
Figure E.4 – Magnetic field distribution and measuring points . 29
Figure F.1 – Results obtained on a car with a full electric powertrain . 34
Figure F.2 – Results obtained on a car with a parallel hybrid electric powertrain . 34

Table C.1 – Summary of CDF percentile model fitting parameters for dipole source . 22
Table C.2 – CDF percentiles for dipole source at s = 3,545 . 23
Table D.1 – Uncertainty budget example of the evaluation of magnetic field exposures . 25
Table E.1 – Comparison of the ratio of magnetic field and ICNIRP 1998 reference
level, and current density and basic restriction for the wire cable . 30
Table E.2 – Comparison of the ratio of magnetic field and ICNIRP 1998 reference
level, and current density and basic restriction for the electrical motor . 30

– 4 – IEC 62764-1:2022 © IEC 2022
Table E.3 – Comparison of the ratio of magnetic field and ICNIRP 2010 reference
level, and internal electric field and basic restriction for the wire cable . 31
Table E.4 – Comparison of the ratio of magnetic field and ICNIRP 2010 reference
level, and internal electric field and basic restriction for the electrical motor. 31

IEC 62764-1:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEASUREMENT PROCEDURES OF MAGNETIC FIELD LEVELS
GENERATED BY ELECTRONIC AND ELECTRICAL EQUIPMENT IN THE
AUTOMOTIVE ENVIRONMENT WITH RESPECT TO HUMAN EXPOSURE –

Part 1: Low-frequency magnetic fields

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,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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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
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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
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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6) All users should ensure that they have the latest edition of this publication.
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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.
IEC 62764-1 has been prepared by IEC technical committee 106: Methods for the assessment
of electric, magnetic and electromagnetic fields associated with human exposure. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
106/575/FDIS 106/579/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 6 – IEC 62764-1:2022 © IEC 2022
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 62764 series, published under the general title Measurement
procedures of magnetic field levels generated by electronic and electrical equipment in the
automotive environment with respect to human exposure, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document 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.

IEC 62764-1:2022 © IEC 2022 – 7 –
INTRODUCTION
This document specifies a methodology for determining the exposure to multiple magnetic field
sources for passenger cars and light commercial vehicles including standardized operating
conditions and measurement volumes and/or surfaces.

– 8 – IEC 62764-1:2022 © IEC 2022
MEASUREMENT PROCEDURES OF MAGNETIC FIELD LEVELS
GENERATED BY ELECTRONIC AND ELECTRICAL EQUIPMENT IN THE
AUTOMOTIVE ENVIRONMENT WITH RESPECT TO HUMAN EXPOSURE –

Part 1: Low-frequency magnetic fields

1 Scope
This part of IEC 62764 applies to the assessment of human exposure to low-frequency magnetic
fields generated by automotive vehicles. For plug-in vehicles, this includes the electric vehicle
supply equipment (EVSE) and associated cables provided by the car manufacturer. This
excludes the charging station.
This document specifies the measurement procedure for the evaluation of magnetic field
exposures generated by electronic and electrical equipment (excluding intentionally
transmitting radio frequency antennas) in selected automotive environments, for passenger
cars and commercial vehicles of categories M1 and N1 as defined in
ECE/TRANS/WP.29/78/Rev.3 [1] , with respect to human exposure. It provides standardized
operating conditions and defines recommended measurements to assess compliance with the
applicable exposure requirements.
This document covers the frequency range 1 Hz to 100 kHz and is applicable to any type of
engine and/or internal energy source.
This document does not include procedures for assessment of human exposure to
electromagnetic fields generated by wireless power transfer (WPT) equipment operating in
automotive environments. Exposure assessment procedures for WPT equipment are covered
by IEC PAS 63184 [2]. Magnetic field transients shorter than 200 ms occurring when electrical
functions are activated are not considered in this document.
Abnormal operation of the vehicle or its equipment is not taken into consideration.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61786-1, Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to
100 kHz with regard to exposure of human beings – Part 1: Requirements for measuring
instruments
IEC 62311:2019, Assessment of electronic and electrical equipment related to human exposure
restrictions for electromagnetic fields (0 Hz to 300 GHz)
____________
Numbers in square brackets refer to the Bibliography.

IEC 62764-1:2022 © IEC 2022 – 9 –
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
applicable requirement
particular requirement regarding human exposure to low-frequency magnetic fields against
which the vehicle is to be assessed using the methods outlined in this document
Note 1 to entry: Examples of such requirements can be found in [3] to [9].
3.1.2
dynamometer
device allowing a vehicle to rotate all its wheels with a given torque while stationary
3.1.3
magnetic field exposure
specific metric that is used to quantify human exposure to low-frequency magnetic fields in the
applicable requirement
Note 1 to entry: Examples of such metrics can be found in [3] to [9].
3.1.4
powertrain
main system that generates power and delivers it to the road surface
3.2 Abbreviated terms
EV electric vehicle
EVSE electric vehicle supply equipment
HEV hybrid electric vehicle
ICEV internal combustion engine vehicle
SOC state of charge (indicated to the driver)
WPT wireless power transfer
4 Measurement procedure
4.1 Measurement phases
The measurement procedure is divided into four parts regarding the operational vehicle use:
1) vehicle in stationary mode;
2) vehicle in driving mode;
3) vehicle in dynamic mode;
4) vehicle in plug-in charging mode.
These four parts are described in detail in Clause 6.

– 10 – IEC 62764-1:2022 © IEC 2022
4.2 Measuring conditions
The measurements cover only sources of persistent magnetic field exposure. Continuous
occurring sources, or repetitive transient sources such as fan and wipers, are included.
Magnetic field transients shorter than 200 ms occurring when electrical functions are activated
are not considered in this document due the difficulty of performing reliable and repeatable
measurements.
NOTE The rotation of the tyres can produce low-frequency magnetic fields (typically below 50 Hz, depending on
the speed of the vehicle) in and surrounding the vehicle, due to the static magnetization of the tyres [10], [11]. This
can only contribute to measurements inside the vehicle (since no measurements are performed around the vehicle
in dynamic mode).
The measurements shall be performed in the vehicle's standard modes of operation, generating
reasonably foreseeable levels of magnetic field exposure in measuring volumes that are
representative of the occupant (Annex B) and bystander locations.
4.3 Test site
Measurements shall be performed in an area having ambient magnetic field exposure values of
less than 10 % of the values given in the requirements in the measurement volumes.
The ambient magnetic field exposure shall be measured without the vehicle, but in conditions
that are representative of the vehicle test. This measurement can be performed before each
test or periodically in accordance with the laboratory's quality management processes.
A dynamometer (or roller bench) may be used if it rotates all the wheels of the vehicle. It shall
be set to simulate the outdoor dynamics of the vehicle including at least its steady-state torque
in driving mode and its inertial mass during dynamic mode.
If an outdoor track is used, the slope gradient of the section of the track used for the tests shall
be in the range ±2 %.
NOTE In the case of a dynamometer, the ambient magnetic field exposure can depend on the torque and/or speed
of the dynamometer.
4.4 Vehicle set-up
The following configuration is recommended within the passenger compartment, where
practicable:
– all seats except the rearmost seats, if adjustable, centre-positioned horizontally and at the
lowest position vertically;
– the rearmost seats, if horizontally adjustable, in their rearmost position;
– the headrests fully retracted;
– all seat backs except for the rearmost seats, if adjustable, approximately 15° back from the
vertical;
– all seat backs of the rearmost seats, if adjustable, fully tilted backwards;
– the steering wheel centre-positioned vertically and horizontally.
4.5 Measurement locations
4.5.1 General
Measurements are performed in all regions of the vehicle that are accessible by the driver and
passengers, and in the immediate vicinity of the vehicle for bystanders. These include the driver
and passenger area (cabin), the cargo storage area, the engine and/or the electric powertrain
areas, and the areas around the outside of the vehicle.

IEC 62764-1:2022 © IEC 2022 – 11 –
The measurement distance between the surface of any part of the vehicle and the centre of the
probe shall be 20 cm (see Annex A), except for the surfaces of the seats where the distance of
6,5 cm shall be used. These distances (see Annex E) ensure an acceptable measurement
uncertainty for a 100 cm probe (see Annex C).
4.5.2 Inside the vehicle
Measurements shall be performed throughout the volumes accessible in normal vehicle use
cases by parts of the human body to which the applicable exposure requirements apply. These
volumes shall be defined by the car manufacturer depending on the specific vehicle. For
example, in the passenger compartment, occupants are assumed to be seated in positions
where restraint systems are provided. An example of test volumes taking account of all body
parts is illustrated in Figure 1.
Measurements are not required where the components are mounted (no components or parts
shall be removed to perform the measurements).

Figure 1 – Example of test volumes taking account of all body parts
for a left-hand drive vehicle
In the example shown in Figure 1, the following apply.
– For individual seats, the occupants are represented by three volumes corresponding to
(A) the feet, (B) the legs, and (C) the trunk and head. For bench seats, the occupants are
represented by three common volumes: D, E and F.
– The volume G represents the arms and hands on the steering wheel (which can be on the
left-hand side or right-hand side of the vehicle or both, or in the centre).
Measurements shall be performed over the engine and/or the electric powertrain in H and/or I
only in stationary and charging modes if the measurement is required, and if people are
permitted to access these areas while the engine is running and/or the electric powertrain is
active. The bottom of H can be a smooth envelope above all contained components. Volumes
B, C, E and F can also take into account the positions of babies and infants.
NOTE These test volumes are examples defined with consideration of all body parts (including potential exposure
of extremities in volumes A, D, G, H and I), but it is possible that some standards or regulations do not apply to the
whole body.
– 12 – IEC 62764-1:2022 © IEC 2022
Measurement in the areas of the driver's position can be achieved by different means including
the use of a dynamometer. Appropriate safety measures shall be employed to avoid accidents
due to operation of the dynamometer during measurements.
4.5.3 Outside the vehicle
Measurements shall be performed around the outside of the vehicle in all areas accessible to
parts of the human body identified in the applicable requirements.
5 Measurement technique
5.1 Measuring equipment
The measuring equipment shall include a probe covering the frequency range from 1 Hz to
100 kHz. The probe shall comply with the requirements of IEC 61786-1, including that the area
of the probe shall be at most 100 cm .
5.2 Measurement of the magnetic field exposure
For each volume specified in 4.5.2, the measurement of the magnetic field exposure shall be
performed as follows:
1) scan the entire volume to determine the location of the maximum magnetic field exposure;
2) retain the maximum magnetic field exposure.
To scan the measurement volumes, the probe shall be moved sufficiently slowly to ensure that
the spatial maximum is correctly located, especially when measuring sources between
1 Hz and 10 Hz.
The positioning of the probe and the means used to scan the volume shall be defined by the
laboratory depending on the probe and their measurement facilities, manually or automatically.
6 Measurement procedure
6.1 Vehicle in stationary mode
6.1.1 General
In this step, measurements are performed with the vehicle stationary.
For ICEVs, EVs and HEVs, these measurements are not required if all the relevant vehicle
functions can be tested simultaneously in driving mode.
6.1.2 Phase 1: vehicle preparation and set-up
The following conditions shall be applied.
– For ICEVs: idle (engine running) with transmission disengaged (neutral) for both manual
and automatic gearboxes.
– For EVs: ready to drive.
– For HEVs: ready to drive and/or idle (engine running).
– Vehicle parking brake enabled only if all functions can still be activated, otherwise utilize
appropriate means to restrain the vehicle.
– Start/stop function (if present) disabled (with engine continuously running).
– Seats and steering wheel set as defined in 4.4.
– Doors closed.
IEC 62764-1:2022 © IEC 2022 – 13 –
– Front and rear openings of vehicle (e.g. cargo storage area, hood) closed except when
measuring in associated volumes (e.g. H or I).
– Switch on the items of electrical equipment that are considered in 4.2.
– Where a range of settings are available (blower motor, heating), the reasonably foreseeable
use mode of operation shall be used.
NOTE As noted in IEC 62311:2019, 5.3, "For practical reasons it is acceptable to perform the assessment with
the equipment being operated with settings that produce the maximum exposure levels (e.g., maximum rated
load, maximum rated power consumption, maximum speed or other), consistent with reasonably foreseeable
use. The equipment is operated for a sufficient period to ensure that the conditions of operation are stable."
CAUTION: The engine fan or other equipment can start automatically without any warning.
6.1.3 Phase 2: vehicle measurement
Perform the measurement of magnetic field exposure in all volumes defined in 4.5 that are
required by the applicable regulation being assessed.
NOTE Examples of such regulations can be found in [3] to [9].
During the measurements, the SOC shall be kept above 20 % of the maximum SOC for vehicles
having an electric powertrain.
6.2 Vehicle in driving mode
6.2.1 General
In this step, measurements are performed when the vehicle is operated at a constant speed.
6.2.2 Phase 1: vehicle preparation and set-up
The following conditions shall be applied.
– Seats and steering wheel set as defined in 4.4.
– Switch on the items of electrical equipment that are considered in 4.2.
– Where a range of settings are available (blower motor, heating), the reasonably foreseeable
use mode of operation shall be used. See NOTE in 6.1.2.
6.2.3 Phase 2: vehicle measurement (at constant speed)
For ICEVs and EVs, drive the vehicle at a constant speed of (40 ± 8) km/h as indicated to the
driver: a cruise control regulator can be used.
For HEVs, drive the vehicle:
– either in single mode (e.g. serial hybrid) with both the electrical and the internal combustion
propulsion systems functioning to operate the vehicle at (40 ± 8) km/h. The value of the
engine speed shall be recorded in the test report;
– or in two separate modes (e.g. parallel hybrid): internal combustion engine operating alone,
electric propulsion system operating alone.
In all cases, if the vehicle cannot reach (40 ± 8) km/h, the maximum speed shall be chosen and
recorded in the test report.
During driving mode, the vehicle functions activated in stationary mode shall also be activated
simultaneously when possible.
Perform the measurement of magnetic field exposure in all volumes defined in 4.5.

– 14 – IEC 62764-1:2022 © IEC 2022
During the measurements, the SOC shall be kept above 20 % of the maximum SOC for vehicles
having an electric powertrain.
6.2.4 Phase 3: additional measurements
If required in the test plan (see NOTE in 6.1.2), complementary measurements may be carried
out in different vehicle driving conditions suspected to generate high magnetic field exposure.
6.3 Vehicle in dynamic mode
6.3.1 General
In this step, measurements are performed when the vehicle is accelerating.
6.3.2 Phase 1: vehicle preparation and set-up
The following conditions shall be applied.
– Seats and steering wheel set as defined in 4.4.
– Switch on the items of electrical equipment that are considered in 4.2.
– Where a range of settings are available (blower motor, heating), the setting assumed to
produce the highest magnetic field exposure level shall be used.
6.3.3 Phase 2: vehicle measurement
For each location of the maximum magnetic field exposure determined in the vehicle driving
mode test (see 6.2), perform an acceleration and deceleration cycle and measure the maximum
magnetic field exposure level during the cycle.
NOTE 1 Annex F presents typical results of magnetic field levels obtained during an experimental test cycle of two
electric powertrains.
The acceleration stage shall be performed from 0 km/h to 90 km/h, achieving at least 2,5 m/s
between 10 km/h and 75 km/h. In case the vehicle cannot maintain the specified acceleration
for reasons other than power limitations due to battery temperature, or cannot reach the
maximum speed due to the vehicle's capabilities (and not due to the limitations of the test
facility), the achieved acceleration and/or the maximum speed shall be indicated in the test
report.
NOTE 2 An acceleration of 2,5 m/s is chosen in order to be at least in line with other standards dealing with
acceleration-related assessments, such as the GB/T 37130 standard from 2020, the NEDC (New European Driving
2 2
Cycle, ~1 m/s ) or the WLTP (Worldwide harmonized Light vehicles Test Procedure, 1,6 m/s ) and taking into
consideration that it is possible, without major safety issues during acceleration tests on dynamometer, to apply up
to this value.
The deceleration stage shall be performed from 90 km/h to 0 km/h, achieving at least 2,5 m/s
between 75 km/h and 10 km/h. In case the vehicle cannot maintain the specified deceleration,
the achieved deceleration shall be indicated in the test report.
NOTE 3 Storage of the vehicle at room temperature for at least 8 h prior to performing the test can prevent power
limitations due to battery temperature.
For vehicles having an electric powertrain, the minimum and maximum values of the SOC shall
be chosen so that the electric mode of acceleration is fully exercised. These values shall be
specified in the test plan and shall be recorded in the test report.

IEC 62764-1:2022 © IEC 2022 – 15 –
6.4 Vehicle in plug-in charging mode
6.4.1 General
This step is specific to vehicles equipped with an on-board rechargeable electrical energy
storage system (EV, plug-in vehicle, etc.). The measurements are performed for each charging
system of the vehicle and associated charging modes.
6.4.2 Phase 1: vehicle preparation and set-up
The following conditions shall be applied.
– At the beginning of the measurements, the SOC shall be below 20 % of the maximum SOC
for vehicles having an electric powertrain.
– Vehicle parking brake enabled.
– Seats and steering wheel set as defined in 4.4.
– Cable(s) of the plug-in charging system(s) of the vehicle or of the charging station hanging
+02,
vertically at a distance of (0,1 ) m from the vehicle body as described in the examples in
Figure 2 a) and Figure 2 b).
– The closures of volumes H and/or I closed unless measuring in those volumes.
– Key off.
– Switch off all electrical equipment.

Dimensions in centimetres
a) Side view b) Top view
Figure 2 – Plug-in charging cable positioning
6.4.3 Phase 2: vehicle measurement
Perform the measurement of magnetic field exposure in all volumes defined in 4.5 for each
charging system of the vehicle and associated charging modes with a SOC less than 80 %.
A measurement shall be performed around the socket of each charging system of the vehicle.
For each cable supplied by the car manufacturer and EVSE manufacturer, measurements shall
also be performed along and around the cable over its first 0,50 m. For cables including EVSE,
measurements shall also be performed over the surface of the EVSE. During the measurements,
the SOC shall be kept between 20 % and 80 % of the maximum SOC for vehicles having an
electric powertrain.
Other sources, such as the wall-box or charging station, should not be measured.

– 16 – IEC 62764-1:2022 © IEC 2022
7 Assessment of measurement uncertainty
The assessment of measurement uncertainty shall include the information described in
IEC 62311:2019, Clause 6, and in particular the combined uncertainty due to frequency
response flatness, isotropy, linearity, positioning and calibration accuracy of the probe. An
uncertainty of 10 % due to the non-uniformity of the magnetic field for the size and the position
of the probe shall also be included in the combined uncertainty budget (see Annex C). Annex D
also provides information on th
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