Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus

This European Standard applies to signalling and telecommunication apparatus that is installed inside
the railway environment. Signalling and telecommunication apparatus mounted in vehicles is covered
by EN 50121-3-2:2016, signalling and telecommunication apparatus installed inside the substation and
connected to substation equipment is covered by EN 50121-5:2016.
This European Standard specifies limits for emission and immunity and provides performance criteria
for signalling and telecommunications (S&T) apparatus (including power supply systems belonging to
S&T) which may interfere with other apparatus inside the railway environment, or increase the total
emissions for the railway environment and so risk causing Electro-Magnetic Interference (EMI) to
apparatus outside the railway system.
The requirements specified in this standard apply for:
— vital equipment such as interlocking or command and control;
— apparatus inside the 3 m zone;
— ports of apparatus inside the 10 m zone with connection inside the 3 m zone;
— ports of apparatus inside the 10 m zone with cable length > 30 m.
Other apparatus not covered by at least one of these given cases should be in compliance with
EN 61000-6-2.
If a port is intended to transmit or receive for the purpose of radio communication (intentional radiators,
e.g. transponder systems), then the radiated emission requirement in this standard are not intended to
be applicable to the intentional transmission from a radio-transmitter as defined by the ITU.
Immunity limits do not apply in the exclusion bands as defined in the corresponding EMC related
standard for radio equipment.
The standard does not specify basic personal safety requirements for apparatus such as protection
against electric shock, unsafe operation, insulation co-ordination and related dielectric tests. The
requirements were developed for and are applicable to this set of apparatus when operating under
normal conditions. Fault conditions of the apparatus have not been taken into account.
The frequency range considered is from DC to 400 GHz. No measurements need to be performed at
frequencies where no requirement is specified.
For products in the scope of EN 61000-3-2, EN 61000-3-3, EN 61000-3-11 or EN 61000-3-12 the
requirements of those standards also apply.
These specific provisions are to be used in conjunction with the general provisions in
EN 50121-1:2016.
The immunity and emission levels do not of themselves guarantee that the integration of apparatus will
necessarily be satisfactory. The standard cannot cover all the possible configurations of the apparatus,
but the test levels are sufficient to achieve satisfactory EMC in the majority of cases.

Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 4: Störaussendungen und Störfestigkeit von Signal- und Telekommunikationseinrichtungen

Applications ferroviaires - Compatibilité électromagnétique - Partie 4: Emission et immunité des appareils de signalisation et de télécommunication

Železniške naprave - Elektromagnetna združljivost - 4. del: Sevanje in odpornost signalnih in telekomunikacijskih naprav

General Information

Status
Not Published
Public Enquiry End Date
30-Aug-2021
Current Stage
98 - Abandoned project (Adopted Project)
Start Date
19-Mar-2024
Due Date
24-Mar-2024
Completion Date
19-Mar-2024

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SLOVENSKI STANDARD
oSIST prEN 50121-4:2021
01-julij-2021
Železniške naprave - Elektromagnetna združljivost - 4. del: Sevanje in odpornost
signalnih in telekomunikacijskih naprav
Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of
the signalling and telecommunications apparatus
Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 4: Störaussendungen und
Störfestigkeit von Signal- und Telekommunikationseinrichtungen
Applications ferroviaires - Compatibilité électromagnétique - Partie 4: Emission et
immunité des appareils de signalisation et de télécommunication
Ta slovenski standard je istoveten z: prEN 50121-4:2021
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
45.020 Železniška tehnika na Railway engineering in
splošno general
oSIST prEN 50121-4:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50121-4:2021

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oSIST prEN 50121-4:2021

EUROPEAN STANDARD DRAFT
prEN 50121-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

July 2021
ICS  Will supersede EN 50121-4:2016 and all of its
amendments and corrigenda (if any)
English Version
Railway applications - Electromagnetic compatibility - Part 4:
Emission and immunity of the signalling and telecommunications
apparatus
Applications ferroviaires - Compatibilité électromagnétique - Bahnanwendungen - Elektromagnetische Verträglichkeit -
Partie 4: Emission et immunité des appareils de Teil 4: Störaussendungen und Störfestigkeit von Signal-
signalisation et de télécommunication und Telekommunikationseinrichtungen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2021-10-15.

It has been drawn up by CLC/TC 9X.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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,
Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.



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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 73231 Ref. No. prEN 50121-4:2021 E

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oSIST prEN 50121-4:2021
prEN 50121-4:2021 (E)
Contents
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
4 Description of location . 7
5 Emission limits for apparatus . 7
6 Immunity .
...

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