EN 50121-2:2015

SLOVENSKI STANDARD
01-julij-2015
Železniške naprave - Elektromagnetna združljivost - 2. del: Sevanje celotnega
železniškega sistema v okolje
Railway applications - Electromagnetic compatibility -- Part 2: Emission of the whole
railway system to the outside world
Bahnanwendungen - Elektromagnetische Verträglichkeit -- Teil 2: Störaussendungen des
gesamten Bahnsystems in die Außenwelt
Applications ferroviaires - Compatibilité électromagnétique -- Partie 2: Emission du
système ferroviaire dans son ensemble vers le monde extérieur
Ta slovenski standard je istoveten z: EN 50121-2:2015
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
45.020 Železniška tehnika na Railway engineering in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50121-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2015
ICS 29.280; 33.100.10; 45.020 Supersedes EN 50121-2:2006
English Version
Railway applications - Electromagnetic compatibility - Part 2:
Emission of the whole railway system to the outside world
Applications ferroviaires - Compatibilité électromagnétique - Bahnanwendungen - Elektromagnetische Verträglichkeit -
Partie 2: Emission du système ferroviaire dans son Teil 2: Störaussendungen des gesamten Bahnsystems in
ensemble vers le monde extérieur die Außenwelt
This European Standard was approved by CENELEC on 2015-01-05. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50121-2:2015 E
Contents
Foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 Emission limits . 7
4.1 Emission from the open railway system during train operation . 7
4.2 Radio frequency emission from railway substations . 7
5 Method of measurement of emission from moving rolling stock and substations . 8
5.1 General and specific measurement parameters . 8
5.1.1 General measurement parameters. 8
5.1.2 Measurement parameter for moving trains. 10
5.1.3 Measurement parameter for railway substations . 11
5.2 Acquisition methods . 11
5.2.1 General . 11
5.2.2 Fixed frequency method . 12
5.2.3 Frequency sweeping method . 12
5.3 Transients . 12
5.4 Measuring conditions . 13
5.4.1 Weather conditions . 13
5.4.2 Railway system operating modes . 13
5.4.3 Multiple sources from remote trains . 13
5.5 Test report . 13
Annex A (informative) Background to the method of measurement . 19
A.1 Introduction . 19
A.2 Requirement for a special method of measurement . 19

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A.3 Justification for a special method of measurement . 19
A.4 Frequency range . 20
A.5 Antenna positions . 20
A.6 Conversion of results if not measured at 10 m . 20
A.7 Measuring scales . 20
A.8 Repeatability of results. 21
A.9 Railway system conditions . 21
A.9.1 Weather . 21
A.9.2 Speed, traction power . 21
A.9.3 Multiple sources from remote trains . 21
A.10 Number of traction vehicles per train . 22
Annex B (informative) Cartography - Electric and Magnetic fields at traction frequencies . 23
Annex C (informative) Emission values for lower frequency range . 25
Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 27
Bibliography . 28

Foreword
This document (EN 50121-2:2015) has been prepared by CLC/TC 9X: “Electrical and electronic
applications for railways”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2016-01-05
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2018-01-05
conflicting with this document have to
be withdrawn
This document supersedes EN 50121-2:2006.
EN 50121-2:2006:
− clarification of scope (Clause 1);
− set dated normative references (Clause 2);
− combination of former Clause 5 and Annex A related to method of measurement for moving
trains and railway substations; (5.1)
− moving emission values for radiated H-fields in the frequency range 9 kHz – 150 kHz into new
Annex C due to the fact that:
− there are very few outside world victims;
− there is low reproducibility;
− clarification of acquisition method (5.2).
This European Standard is to be read in conjunction with EN 50121-1.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
This standard forms Part 2 of the European Standard series EN 50121, published under the general
title “Railway applications - Electromagnetic compatibility”. The series consists of:
− Part 1: General
− Part 2: Emission of the whole railway system to the outside world
− Part 3-1: Rolling stock - Train and complete vehicle

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− Part 3-2: Rolling stock - Apparatus
− Part 4: Emission and immunity of the signalling and telecommunications apparatus
− Part 5: Emission and immunity of fixed power supply installations and apparatus

1 Scope
This European Standard is intended to define the electromagnetic environment of the whole railway
system including urban mass transit and light rail system. It describes the measurement method to
verify the emissions, and gives the cartography values of the fields most frequently encountered.
This European standard specifies the emission limits of the whole railway system to the outside world.
The emission parameters refer to the particular measuring points defined in Clause 5. These
emissions should be assumed to exist at all points in the vertical planes which are 10 m from the
centre lines of the outer electrified railway tracks, or 10 m from the fence of the substations.
Also, the zones above and below the railway system may be affected by electromagnetic emissions
and particular cases shall be considered individually.
These specific provisions are to be used in conjunction with the general provisions in
EN 50121-1:2015.
For existing railway lines, it is assumed that compliance with the emission requirements of
EN 50121-3-1, EN 50121-3-2, EN 50121-4 and EN 50121-5 will ensure the compliance with the
emission values given in this part.
For newly build railway systems it is best practice to provide compliance to the emission limits given in
this part of the standard (to be defined in the EMC plan according to EN 50121-1).
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.
EN 50121-1:2015, Railway applications - Electromagnetic compatibility - Part 1: General
EN 55016-1-1:2010, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus
(CISPR 16-1-1:2010)
EN 55016-1-4:2010, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for
radiated disturbance measurements (CISPR 16-1-4:2010)
IEC 60050-161, International Electrotechnical Vocabulary (IEV)
3 Terms, definitions and abbreviations
For the purpose of this document, the terms and definitions given in IEC 60050-161 and the following
apply.
3.1 Terms and definitions
3.1.1
apparatus
an electric or electronic product with an intrinsic function intended for implementation into a fixed
railway installation
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3.1.2
environment
the surrounding objects or region which may influence the behaviour of the system and/or may be
influenced by the system
3.1.3
railway substation
an installation the main function of which is to supply a contact line system at which the voltage of a
primary supply system, and in some cases the frequency, is transformed to the voltage and frequency
of the contact line
3.1.4
rolling stock
It covers traction stock and trainsets including urban vehicles for use in city streets
3.2 Abbreviations
a.c. alternating current
bw band width
d.c. direct current
E electric (field)
EMC Electromagnetic Compatibility
FFT Fast Fourier transform
H magnetic (field)
HV high voltage
4 Emission limits
...