IEC 62236-2:2008

IEC 62236-2
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 2: Emission of the whole railway system to the outside world

Applications ferroviaires – Compatibilité électromagnétique –
Partie 2: Emission du système ferroviaire dans son ensemble vers le monde
extérieur
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IEC 62236-2
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 2: Emission of the whole railway system to the outside world

Applications ferroviaires – Compatibilité électromagnétique –
Partie 2: Emission du système ferroviaire dans son ensemble vers le monde
extérieur
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 45.060 ISBN 978-2-88910-646-2
– 2 – 62236-2 © IEC:2008
CONTENTS
FOREWORD.3

1 Scope.5

2 Normative references .5

3 Terms and definitions .5

4 Emission limits .6

4.1 Emission from the open railway route during train operation.6

4.2 Radio frequency emission from railway substations .6

5 Method of measurement of emission from moving trains.7
5.1 Measurement parameters.7
5.2 Frequency selection .9
5.2.1 Selected frequencies .9
5.2.2 Sweep frequency.9
5.3 Transients .10
5.4 Measuring conditions .10
5.4.1 Weather conditions.10
5.4.2 Railway operating modes.10
5.4.3 Multiple sources from remote trains .10
5.5 Test report .10
5.6 Antenna positions.10
Annex A (normative) Method of measurement of electromagnetic emission from
railway substations .17
Annex B (informative) Background to the method of measurement.18
Annex C (informative) Cartography – Electric and magnetic fields at traction
frequencies.23
Bibliography.24

Figure 1 – Emission limits in frequency range 9 kHz to 1 GHz.12
Figure 2 – Emission limit for substations.13
Figure 3 – Position of antenna for measurement of magnetic field in the 9 kHz to
30 MHz frequency band .14
Figure 4 – Position (vertical polarisation) of antenna for measurement of electric field
in the 30 MHz to 300 MHz frequency band.15

Figure 5 – Position (vertical polarisation) of antenna for measurement of electric field
in the 300 MHz to 1 GHz frequency band.16
Figure B.1 – Time variation of emissions from a moving train with many transient
events.22

Table C.1 – Typical maximum electric and magnetic field values at fundamental
frequency of different electrification systems.23

62236-2 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 2: Emission of the whole railway system

to the outside world
FOREWORD
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International Standard IEC 62236-2 has been prepared by IEC technical committee 9:
Electrical equipment and systems for railways.
This second edition cancels and replaces the first edition published in 2003. It constitutes a
technical revision and is based on EN 50121-2:2006.
The main change with respect to the previous edition is listed below:
– distance conversion factor n defined in the frequency range from 9 kHz to 150 kHz.

– 4 – 62236-2 © IEC:2008
The text of this standard is based on the following documents:

FDIS Report on voting
9/1185/FDIS 9/1213/RVD
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 of IEC 62236 series, published under the general title Railway applications –
Electromagnetic compatibility, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site 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.
62236-2 © IEC:2008 – 5 –
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 2: Em
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