IEC 62597:2019

IEC 62597 ®
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
Magnetic field levels generated by electronic and electrical apparatus in the
railway environment with respect to human exposure – Measurement
procedures
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IEC 62597 ®
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
Magnetic field levels generated by electronic and electrical apparatus in the

railway environment with respect to human exposure – Measurement

procedures
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 45.060.01 ISBN 978-2-8322-7103-2

– 2 – IEC 62597:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 Measurement procedure . 9
4.1 General . 9
4.2 Rolling stock . 10
4.2.1 General . 10
4.2.2 Accessible areas for workers inside rolling stock . 10
4.2.3 Public areas inside rolling stock . 10
4.2.4 Areas outside rolling stock (public and workers) . 10
4.3 Fixed installation . 10
4.3.1 General . 10
4.3.2 Open railway route (public and worker) . 11
4.3.3 Areas close to fixed power supply installations (public and workers) . 11
4.3.4 Platform (public and worker) . 11
4.3.5 Simulation/calculation . 11
4.4 Test conditions . 12
4.4.1 Test of rolling stock . 12
4.4.2 Test of infrastructure . 12
4.5 Test environment . 13
5 Measurement technique . 13
5.1 General . 13
5.2 Frequency range . 13
5.3 Measurement equipment . 13
5.3.1 General . 13
5.3.2 Field probes . 13
5.3.3 Summation of spatial components . 14
5.3.4 Data logging . 14
5.3.5 Dynamic range . 14
5.3.6 Isotropy . 14
5.3.7 Linearity . 14
5.3.8 Calibration and accuracy . 14
5.4 Evaluation methods . 14
5.4.1 General . 14
5.4.2 DC magnetic field . 14
5.4.3 AC magnetic field . 15
5.5 Measurement execution . 16
5.5.1 General . 16
5.5.2 Rolling stock . 16
5.5.3 Infrastructure . 16
6 Report . 16
(normative) Test plan . 18

A.1 General . 18
A.2 Rolling stock . 18
A.2.1 General . 18
A.2.2 Electromagnetic sources . 18
A.2.3 Frequency range of measurement. 18
A.2.4 Measurement positions . 19
A.3 Infrastructure . 19
A.3.1 Open line . 19
A.3.2 Level crossing . 19
A.3.3 Platform . 20
A.3.4 Bridges/underpass . 20
A.3.5 Fixed power supply installations . 20
(informative) Measurement technique for lower frequency . 21
B.1 Lower frequency ranges . 21
B.2 Field probes for lower frequency . 21
B.3 Dynamic range . 21
(informative) Consistency to IEC 62110 in some countries . 22
C.1 General . 22
C.2 Terms and definitions . 22
C.3 Fundamental measurement procedure . 22
C.4 Measurement procedure for fixed installations . 22
C.4.1 General . 22
C.4.2 Open railway route . 22
C.4.3 Areas close to fixed power supply installations . 23
C.4.4 Platforms . 23
C.4.5 Procedure to find out the measurement point . 24
Bibliography . 25

Table 1 – Location and distances . 11
Table C.1 – Location and distances . 23

– 4 – IEC 62597:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC FIELD LEVELS GENERATED BY ELECTRONIC
AND ELECTRICAL APPARATUS IN THE RAILWAY ENVIRONMENT
WITH RESPECT TO HUMAN EXPOSURE –
MEASUREMENT PROCEDURES
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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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 62597 has been prepared by IEC technical committee 9: Electrical
equipment and systems for railways.
This first edition cancels and replaces IEC TS 62597 published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the Technical
Specification:
– Annex A test plan has been converted to normative text
– New Annex B (informative) for measurement technique for lower frequency has been
added
– New Annex C (informative) about consistency to IEC 62110 in some countries has been
added
The text of this International Standard is based on the following documents:
FDIS Report on voting
9/2505/FDIS 9/2517/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
A bilingual version of this publication may be issued at a later date.

– 6 – IEC 62597:2019 © IEC 2019
INTRODUCTION
The intention of this document is to establish a suitable measuring/calculation method for
determining the magnetic fields in the space around the equipment mentioned in the scope, to
standardize operating conditions and to fix measuring/calculation distances.

MAGNETIC FIELD LEVELS GENERATED BY ELECTRONIC
AND ELECTRICAL APPARATUS IN THE RAILWAY ENVIRONMENT
WITH RESPECT TO HUMAN EXPOSURE –
MEASUREMENT PROCEDURES
1 Scope
The scope of this document is limited to apparatus, systems and fixed installations which are
intended for use in the railway environment. The frequency range covered is 0 Hz to 300 GHz.
Technical considerations and measurements are specified for frequencies up to 20 kHz
because no relevant field strengths are expected above due to the physical nature of
EMF-sources in the railway environment.
The object of this document is to provide measurement and calculation procedures of electric
and magnetic field levels generated by electronic and electrical apparatus in the railway
environment with respect to human exposure.
The regulations regarding the protection of human beings during exposure to non-ionizing
electromagnetic fields in the railway environment are different within the countries worldwide.
This document offers a procedure regarding measurement, simulation/calculation and
evaluation.
The measurement procedures and points of measurement cover also the aspect of persons
bearing active implantable medical devices.
This document does not apply to the risk assessment for persons bearing active implants in
magnetic field generated by electronic and electrical apparatus in the railway environment.
This document does not apply to personal electronic devices (e.g. mobile phones, laptop
computers, wireless communication systems, etc.) of passengers and workers.
This document does not apply to intentional transmitters with frequencies higher than 20 kHz.
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 62311, Assessment of electronic and electrical equipment related to human exposure
restrictions for electromagnetic fields (0 Hz – 300 GHz)
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:
– 8 – IEC 62597:2019 © IEC 2019
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
worker
driver, train-staff and all people working in the railway environment
3.1.2
fixed installation
infrastructure of railway environment without rolling stock
3.1.3
electric traction system
railway electric distribution network used to provide energy for rolling stock
Note 1 to entry: This system includes:
contact line systems,
return circuit of electric traction systems,
running rails of non-electric traction systems, which are in the vicinity of, and conductively connected to the
running rails of an electric traction system,
electrical installations, which are supplied from contact lines either directly or via a transformer,
electrical installations in power plants and substations, which are utilized solely for generation and distribution
of power directly to the contact line,
electric installations of switching stations.
[SOURCE: IEC 60050-811:2017, 811-36-21]
3.1.4
main line
railway line for passenger and freight trains in regional and long-distances operation
3.1.5
urban transport
railway line for underground trainsets, trams, LRV (Light Rail Vehicles), trolleybuses to
operate within the boundary of a city
3.1.6
rolling stock
smallest unit which can be operated covering all vehicles with or without motors
[SOURCE: IEC 60050-811:2017, 811-02-01, modified – “smallest unit which can be operated
covering” has been added.]”
3.1.7
level crossing
crossing of railway and a road at the same level
[SOURCE: IEC 60050-811: 2017, 811-07-01]
3.2 Abbreviated terms
AC Alternating Current
DC Direct Current
EMF Electromagnetic fields
FFT Fast Fourier transform
ICNIRP International Commission on Non-Ionizing Radiation Protection

IEEE Institute of Electrical and Electronics Engineers
LIM Linear Induction Motor
4 Measurement procedure
4.1 General
In railways three electromagnetic sources can affect human beings: rolling stock, fixed power
supply installation and signalling equipment.
According to generic EMF standard IEC 62311, there are two separate summation regimes for
simultaneous exposure to fields of different frequencies. They depend on the effects of the
exposure. In the frequency range from 1 Hz to 10 MHz the electrical stimulation is relevant
and the underlying basic restriction is induced current density. In the frequency range from
100 kHz to 300 GHz, thermal effects are relevant.
As the detectable emission of rolling stock, fixed power supply installation and signalling
equipment is in the frequency range from DC up to 20 kHz, measurements, simulation and
calculation are restricted to this range. Accordingly only one summation regime is applied. In
this frequency range the magnetic field is dominant and the electric field can be neglected.
As power of signalling equipment is low in comparison with other sources of EMF in the
railway environment, its contribution can be neglected.
The measurement procedure of the whole railway system is divided into two cases.
Case 1: Rolling stock (see 4.2)
- measurements inside rolling stock, and
- measurements outside rolling stock (on platform or alternative).
Case 2: Fixed installation (see 4.3)
- measurement of existing railway infrastructure,
- simulation/calculation of worst case situation (e.g. bridges, level crossing, maximum
possible current in overhead contact line or catenary, third rails).
NOTE 1 Compliance of rolling stock can be demonstrated with the first explained case. Compliance of
infrastructure can be demonstrated with the second explained case.
For the apparatus, systems and fixed installations in railway environment there are basic
restrictions for general public and workers specified in ICNIRP, IEEE and other country-
specific documents (see Bibliography).
With compliance of both cases, it can be assumed that the whole railway system is in
compliance with the regulations referenced in this document.
NOTE 2 The process defined in this subclause applies also to demonstrate the compliance of railway equipment
with active implantable medical devices.
Subclause 4.2 defines the measurement points in established areas inside and outside rolling
stock.
Subclause 4.3 defines the measurement points in established areas in fixed installation and
gives details regarding simulation/calculation.
Subclause 4.4 defines the test conditions during the measurement of the magnetic field.

– 10 – IEC 62597:2019 © IEC 2019
Subclause 4.5 is related to the test environment.
A test plan for rolling stock and infrastructure is given in Annex A.
4.2 Rolling stock
4.2.1 General
The following measurement points are specified inside and outside rolling stock.
4.2.2 Accessible areas for workers inside rolling stock
The measurements indicate the emissions of the train equipment in standstill and dynamic
condition (see 4.4.1).
Measurements shall be carried out close to the sources of emission of the train (e.g. power
converters, power cables and power inductors) where workers usually can be in normal
operating conditions of train and appliance and at the driver seat. The measurement heights
above the floor shall be 0,9 m and 1,5 m. The horizontal measuring distance to the walls is
0,3 m or at the minimum distance (> 0,3 m) where workers can be.
4.2.3 Public areas inside rolling stock
The measurements indicate the emissions of the train equipment in standstill and dynamic
condition (see 4.4.1).
Measurements shall be carried out at the closest possible position of the sources of emission
of the train (e.g. power converters, power cables and power inductors), where public can be.
In this case then the measurement heights above the floor of all the public areas shall be
0,3 m, 0,9 m and 1,5 m. The horizontal measuring distance to the walls is 0,3 m or at the
minimum distance (> 0,3 m) where public can be.
4.2.4 Areas outside rolling stock (public and workers)
The measurements close to rolling stock indicate the emissions of the train equipment in
standstill condition (see 4.4.1) in 0,3 m horizontal distance to the train enclosure at the
closest possible position of the sources of emission of the train (e.g. power converters, power
cables and power inductors) at 0,5 m, 1,5 m and 2,5 m height from the top of the running rails.
Measurements for public shall not be carried out at the same side of the third rail with respect
to the tracks.
4.3 Fixed installation
4.3.1 General
Demonstration of compliance of the existing infrastructure shall include fixed electric traction
system of railway environment.
Positions where compliance has to be demonstrated are given in 4.3.2 to 4.3.4.
Simulation/calculation can give worst case figures (see 4.3.5).
NOTE Country specific measurement procedures can be found in Annex C.

4.3.2 Open railway route (public and worker)
Measurements and/or simulation/calculation regarding public shall be carried out in the
distances from the centre of the nearest track of regarded system as given below in Table 1
or in higher distances within the nearest accessible area for public, 1,5 m above ground level
(standing area) where people can be at the detected location.
Table 1 – Location and distances
Location Horizontal distance from centre of Remark
track
m
Main line 10 (for public) If not regulated by legislative
requirements.
Main line without access to the
rails for public.
Urban transport 3 (for public) If not regulated by legislative
requirements.
Urban transport without access to
the rails for public.
Trams, trolley buses 0
Level crossings 0
Bridges 0
Underpass 0
NOTE 1 Combined systems (main line and urban line close together) have to be regarded individually which
may lead to other distances.
NOTE 2 There are some cases where the location of maximum field strength is different from the centre of the
track. In these cases the place with the maximum field strength has to be considered.

Measurements for workers on open railway routes shall be carried out at the closest possible
(not restricted) position to the sources of emission where workers can be.
Short circuit conditions are excluded.
4.3.3 Areas close to fixed power supply installations (public and workers)
Measurements and/or simulation/calculation shall be carried out at the closest possible (not
restricted) position to the sources of emission from fixed power supply installations where
public and workers can be (e.g. as marked on the floor or given by fences). In this case then
the consideration of all the public areas shall be at heights of 0,3 m, 0,9 m and 1,5 m and of
all the worker areas shall be at heights of 0,9 m and 1,5 m. The horizontal measuring distance
to the walls or fences is 0,3 m or at the minimum distance (> 0,3 m) where public and workers
can be.
4.3.4 Platform (public and worker)
Measurements and/or simulation/calculation on the platform shall be carried out at heights
of 0,9 m and 1,5 m above the platform level and with 0,3 m horizontal distance from the edge
of the platform.
4.3.5 Simulation/calculation
If measurements cannot cover the worst case condition
...