EN 50121-2:2006

SLOVENSKI STANDARD
01-januar-2007
1DGRPHãþD
SIST EN 50121-2:2001
Železniške naprave - Elektromagnetna združljivost - 2. del: Sevanje celotnega
železniškega sistema v okolje (vsebuje popravek AC:2008)
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 50121-2:2006
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
July 2006
EUROPÄISCHE NORM
ICS 29.020; 29.280; 45.020 Supersedes EN 50121-2:2000
Incorporates corrigendum May 2008

English version
Railway applications -
Electromagnetic compatibility
Part 2: Emission of the whole railway system
to the outside world
Applications ferroviaires -  Bahnanwendungen -
Compatibilité électromagnétique Elektromagnetische Verträglichkeit
Partie 2: Emission du système ferroviaire Teil 2: Störaussendungen des gesamten
dans son ensemble vers Bahnsystems in die Außenwelt
le monde extérieur
This European Standard was approved by CENELEC on 2006-07-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50121-2:2006 E
Foreword
This European Standard was prepared by Technical Committee TC 9X: Electrical and electronic
applications for railways. The text of the draft was submitted to the formal vote and was approved by
CENELEC as EN 50121-2 on 2006-07-01.
This European Standard supersedes EN 50121-2:2000.
This European Standard is to be read in conjunction with EN 50121-1.
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
• 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

The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-07-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-07-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 2004/108/EC. See Annex ZZ.
The contents of the corrigendum of May 2008 have been included in this copy.
__________
- 3 - EN 50121-2:2006
Contents
1 Scope . 4
2 Normative references . 4
3 Definitions . 5
4 Emission limits . 5
4.1 Emission from the open railway route during train operation . 5
4.2 Radio frequency emission from railway substations . 5
5 Method of measurement of emission from moving trains . 6
5.1 Measurement parameters . 6
5.2 Frequency selection . 8
5.3 Transients . 8
5.4 Measuring conditions . 8
5.5 Test report . 9
5.6 Antenna positions . 9

Annex A (normative) Method of measurement of electromagnetic emission from railway substations . 15
Annex B (informative) Background to the method of measurement . 16
Annex C (informative) Cartography - Electric and Magnetic fields at traction frequencies . 21
Annex ZZ (informative) Coverage of Essential Requirements of EC Directives . 22

Figure 1 - Emission limits in frequency range 9 kHz to 1 GHz . 10
Figure 2 - Emission limit for substations . 11
Figure 3 - Position of antenna for measurement of magnetic field in the 9 kHz
to 30 MHz frequency band . 12
Figure 4 - Position (vertical polarisation) of antenna for measurement of electric field
in the 30 MHz to 300 MHz frequency band . 13
Figure 5 - Position (vertical polarisation) of antenna for measurement of electric field
in the 300 MHz to 1 GHz frequency band . 14
Figure B.1 - Time variation of emissions from a moving train with many transient events . 20
Table C.1 - Typical maximum electric and magnetic field values
at fundamental frequency of different electrification systems . 21

1 Scope
This European Standard sets the emission limits from the whole railway system including urban
vehicles for use in city streets. It describes the measurement method to verify the emissions, and gives
the cartography values of the fields most frequently encountered.

The limits refer to the particular measuring points defined in Clause 5 and Annex A. 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 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.

This part of the standard covers EMC for fixed installations and therefore is not relevant for CE
marking.
2 Normative references
The following referenced documents are indispensable for the application 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.

EN 50121-1 Railway applications - Electromagnetic compatibility
Part 1: General
EN 50121-3-1 Railway applications - Electromagnetic compatibility
Part 3-1: Rolling stock - Train and complete vehicle

EN 50121-5 Railway applications - Electromagnetic compatibility
Part 5: Emission and immunity of fixed power supply installations
and apparatus
EN 55016-1-1 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)

EN 55022 Information technology equipment - Radio disturbance
characteristics - Limits and methods of measurement
(CISPR 22, mod.)
EN 61000-6-4 Electromagnetic Compatibility (EMC)
Part 6-4: Generic Standards - Emission standard for industrial
environments (IEC 61000-6-4, mod.)

CISPR 18 Radio interference characteristics of overhead power lines and high
voltage equipment
IEC 60050 International Electrotechnical Vocabulary (IEV)

- 5 - EN 50121-2:2006
3 Definitions
For the purpose of this Part 2 of the European Standard, the definitions of IEC 60050 and the following
definitions apply.
3.1
apparatus
an electric or electronic product with an intrinsic function intended for implementation into a fixed railway
installation
3.2
environment
the surrounding objects or region which may influence the behaviour of the system and/or may be
influenced by the system
3.3
external interface
the boundary where a system interacts with any other or where a system interacts with its environment

3.4
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
3.5
railway supply lines
conductors running within the boundary of the railway which supply power to only the railway but are not
energised at railway system voltage

4 Emission limits
4.1 Emission from the open railway route during train operation

The emission limits in the frequency range 9 kHz to 1 GHz are given in Figure 1 and the measurement
method is defined in Clause 5. For non-electrified lines, the limits are as those given for 750 V d.c.

Annex C gives guidance values for typical maximum field values at fundamental frequency of different
electrification systems which may occur. They depend on numerous geometrical and operational
parameters which may be obtained from the infrastructure controller.

For urban vehicles operating in city streets, the emission limits given in Figure 1 for 750 V d.c.
conductor rail shall not be exceeded.

NOTE  It is not possible to undertake complete tests with quasi-peak detection due to the reasons stated in Annex B.

4.2 Radio frequency emission from railway substations

Radio frequency noise emission from the railway substation to the outside environment measured
according to the method defined in Annex A shall not exceed the limits in Figure 2.

The limits are defined as quasi-peak values and the bandwidths are those used in EN 55016-1-1:
Bandwidth
frequencies up to 150 kHz 200 Hz
frequencies from 150 kHz to 30 MHz 9 kHz
frequencies above 30 MHz 120 kHz

The distance of 10 m defined in Annex A shall be measured from the fence of the substation. If no fence
exists, the measurements shall be taken at 10 m from the apparatus or from the outer surface of the
enclosure if it is enclosed.
Emission of trains shall not enter into the measurement.

NOTE  For other kinds of fixed installations like auto-transformers, the same limit and measuring distance shall be applied.

5 Method of measurement of emission from moving trains

The method of measurement is adapted from the EN 55016-1-1 to a railway system with moving
vehicles. The background to the method of measurement is given in Annex B.

The electromagnetic fields generated by rail vehicles when operating on a railway network are
measured by means of field strength meters with several different set frequencies. The horizontal
component of the magnetic field perpendicular to the track and both the vertical and horizontal (parallel
to the track) components of the radiated electric field are measured.

5.1 Measurement parameters
5.1.1 The peak measurement method is used. The duration at selected frequency shall be sufficient to
obtain an accurate reading. This is a function of the measuring set and the recommended value is
50 ms.
5.1.2 Frequency bands and bandwidths at – 6 dB used for measurements are in accordance with
EN 55016-1-1.
These are:
Frequency bands: 9-150 kHz 0,15-30 MHz 30-300 MHz 300 MHz -1 GHz
Bandwidth: 200 Hz 9 kHz 120 kHz 120 kHz

5.1.3 When connected to the antenna, the error of measurement of the strength of a uniform sine-
wav
...