EN 50121-3-1:2017

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

This European Standard specifies the emission and immunity requirements for all types of rolling stock. It covers traction stock, hauled stock and trainsets including urban vehicles for use in city streets. This European standard specifies the emission limits of the rolling stock to the outside world. The scope of this part of the standard ends at the interface of the rolling stock with its respective energy inputs and outputs. In the case of locomotives, trainsets, trams etc., this is the current collector (pantograph, shoe gear). In the case of hauled stock, this is the AC or DC auxiliary power connector. However, since the current collector is part of the traction stock, it is not entirely possible to exclude the effects of this interface with the power supply line. The slow moving test has been designed to minimize these effects. There may be additional compatibility requirements within the railway system identified in the EMC plan (e.g. as specified in EN 50238). Basically, all apparatus to be integrated into a vehicle meet the requirements of EN 50121-3-2. In exceptional cases, where apparatus meets another EMC Standard, but full compliance with EN 50121-3-2 is not demonstrated, EMC is ensured by adequate integration measures of the apparatus into the vehicle system and/or by an appropriate EMC analysis and test which justifies deviating from EN 50121-3-2. Electromagnetic interference concerning the railway system as a whole is dealt with in EN 50121-2. These specific provisions are to be used in conjunction with the general provisions in EN 50121-1. The frequency range considered is from 0 Hz (DC) to 400 GHz. No measurements need to be performed at frequencies where no requirement is specified.

Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 3-1: Bahnfahrzeuge - Zug und gesamtes Fahrzeug

Applications ferroviaires - Compatibilité électromagnétique - Partie 3-1: Matériel roulant - Trains et véhicules complets

La présente Norme Européenne spécifie les exigences d’émission et d’immunité pour tous les types de matériel roulant. Elle s’applique au matériel de traction, au matériel remorqué et aux rames, y compris les véhicules de transport urbain. La présente Norme européenne spécifie les limites d’émission du matériel roulant vers le monde extérieur. Le domaine d’application de la présente partie de la norme s’arrête à l’interface du matériel roulant avec ses entrées et sorties d’énergie respectives. Dans le cas des locomotives, des rames, des tramways, etc., il s’agit du collecteur de courant (pantographe, frotteur). Dans le cas du matériel remorqué, il s’agit du connecteur de puissance auxiliaire en courant alternatif ou en courant continu. Cependant, comme le collecteur de courant fait partie du matériel de traction, il n’est pas complètement possible d’exclure les effets de cette interface avec la ligne d’alimentation en énergie. L'essai à vitesse lente a été conçu pour minimiser ces effets. Les systèmes ferroviaires identifiés dans le plan de CEM peuvent faire l’objet d’exigences de compatibilité supplémentaires (spécifiées dans l'EN 50238, par exemple). Fondamentalement, tous les appareils à intégrer dans un véhicule satisfont aux exigences de l’EN 50121-3-2. Dans des cas exceptionnels, quand un appareil respecte une autre norme CEM, mais que la pleine conformité avec l’EN 50121-3-2 n’est pas démontrée, la CEM est assurée par des mesures adéquates d’intégration de l’appareil dans le véhicule et/ou par une analyse CEM appropriée et un essai qui justifie l'écart par rapport à l’EN 50121-3-2. Les perturbations électromagnétiques relatives au système ferroviaire dans son ensemble sont traitées dans l'EN 50121 2. Ces dispositions spécifiques sont destinées à être utilisées conjointement avec les dispositions générales de l'EN 50121 1. La plage de fréquences concernée est comprise entre 0 Hz (courant continu) et 400 GHz. Aucun mesurage n’est nécessaire aux fréquences pour lesquelles aucune exigence n’est spécifiée.

Železniške naprave - Elektromagnetna združljivost - 3-1. del: Vozna sredstva - Vlak in celotno vozilo

Ta evropski standard določa zahteve glede sevanja in odpornosti za vse vrste voznih sredstev. Zajema vlečna vozna sredstva in vlakovne garniture, vključno z urbanimi vozili za uporabo na mestnih ulicah. Ta evropski standard določa mejne vrednosti sevanja voznih sredstev v okolje.
Področje uporabe tega dela standarda se konča pri vmesniku voznega sredstva z ustrezno vhodno in izhodno energijo. Pri lokomotivah, vlakovnih garniturah, tramvajih itd. je to tokovni odjemnik (odjemnik toka). Pri vlečnih voznih sredstvih je to pomožni električni napajalnik za izmenični ali enosmerni tok. Ker je trenutni odjemnik del vlečnega voznega sredstva, ni mogoče v celoti izključiti učinkov tega vmesnika na napajalni progi. Za zmanjšanje teh učinkov je bil zasnovan preskus počasnega premikanja.
Obstajajo lahko dodatne zahteve glede združljivosti železniškega sistema, opredeljene v načrtu elektromagnetne združljivosti (npr. kot je določeno v standardu EN 50238).
V osnovi morajo vse naprave, ki se vgrajujejo v vozilo, izpolnjevati zahteve standarda EN 50121-3-2. V izjemnih primerih, kjer naprava izpolnjuje drug standard elektromagnetne združljivosti, vendar popolna skladnost s standardom EN 50121-3-2 ni prikazana, se elektromagnetna združljivost zagotovi z ustrezno vgradnjo naprave v sistem vozil in/ali z ustrezno analizo elektromagnetne združljivosti in preskusi, ki utemeljujejo odstopanje od standarda EN 50121-3-2.
Elektromagnetne motnje, ki zadevajo železniški sistem kot celoto, so obravnavane v standardu EN 50121-2.
Te posebne določbe je treba uporabljati v povezavi s splošnimi določbami standarda EN 50121-1.
Obravnavan frekvenčni razpon je od 0 Hz do 400 GHz. Za frekvence, za katere ni določenih zahtev, ni treba opraviti meritev.

General Information

• Status: Published
• Publication Date: 12-Jan-2017
• Withdrawal Date: 23-Oct-2019
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 45.060.01 - Railway rolling stock in general
• ICS: 45.140 - Metro, tram and light rail equipment
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 13-Jan-2017
• Due Date: 08-Mar-2018
• Completion Date: 13-Jan-2017
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Mandate: M/404 - Standardisation Mandate to CEN, CENELEC and ETSI for harmonized standard according to the Electro Magnetic Compatibility (EMC) Directive 2004/108/EC
• Ref Project: SIST EN 50121-3-1:2017 - Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle

Relations

• Replaces: EN 50121-3-1:2015 - Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle
• Effective Date: 22-Jan-2023
• Amended By: EN 50121-3-1:2017/A1:2019 - Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle
• Effective Date: 08-May-2018
• Revised: prEN 50121-3-1:2025 - Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle
• Effective Date: 09-Apr-2024
• Revised: FprEN 50121-3-1 - Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle
• Effective Date: 22-Dec-2020

Overview

EN 50121-3-1:2017 - part of the CLC/CENELEC EN 50121 series - defines electromagnetic compatibility (EMC) requirements for rolling stock (train and complete vehicle). The standard specifies emission and immunity principles for traction stock, hauled stock and urban vehicles (trams, LRVs) and covers the vehicle interface to energy inputs/outputs (e.g. pantograph, shoe gear, auxiliary power connector). Frequency coverage is 0 Hz (DC) to 400 GHz. EN 50121-3-1:2017 sets test procedures and limits to ensure rolling stock does not unduly interfere with nearby systems or the outside world.

Key topics and technical requirements

• Scope and interfaces: Emission limits are specified up to the interface between vehicle and supply (current collector or auxiliary connector). Effects of the power supply interface are acknowledged and mitigated by test methods (e.g. slow moving test).
• Emission tests: Radiated electromagnetic disturbance measurements with defined test-site and antenna placement rules (antenna opposite the equipment, midpoint between overhead masts, continuous overhead/third rail where practical).
• Ambient noise handling: Ambient noise must be measured; if noise exceeds limit − 6 dB at specific frequencies, those measurements can be excluded and recorded.
• Applicability and operating modes: Tests are performed in typical operating modes producing the largest emissions; transient-only systems need only be energised, not exercised.
• Immunity approach: No immunity testing of the complete vehicle is required; apparatus-level immunity is addressed primarily in EN 50121-3-2. Vehicle-level EMC is ensured by an EMC plan and appropriate integration measures.
• Special provisions & annexes: Guidance on interference with telecommunication lines (Annex A), radiated measurement procedures (Annex B), low-frequency emission values (Annex C), and conformity with EU EMC Directive (Annex ZZ).

Practical applications and users

Who uses EN 50121-3-1:2017:

• Rolling stock designers and system integrators planning EMC compliance
• EMC engineers and test laboratories conducting emission measurements
• Vehicle manufacturers and suppliers specifying equipment integration
• Railway operators, infrastructure managers and procurement teams requiring contractual EMC conformance Practical uses:
• Developing and implementing an EMC plan for a trainset
• Defining test plans and on-site radiated emission measurements
• Assessing potential interference with external telecoms and signalling systems
• Justifying alternative apparatus integration where EN 50121-3-2 compliance is not fully demonstrable

Related standards

• EN 50121-1 (General provisions)
• EN 50121-2 (Whole railway system emissions)
• EN 50121-3-2 (Rolling stock - Apparatus)
• EN 50238 series (compatibility within signalling/communications)
• EN 55016-1-1 (measurement apparatus) These form the EN 50121 EMC framework used across European railway EMC compliance and vehicle certification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2017
1DGRPHãþD
SIST EN 50121-3-1:2015
Železniške naprave - Elektromagnetna združljivost - 3-1. del: Vozna sredstva - Vlak
in celotno vozilo
Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and
complete vehicle
Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 3-1: Bahnfahrzeuge - Zug
und gesamtes Fahrzeug
Applications ferroviaires - Compatibilité électromagnétique - Partie 3-1: Matériel roulant -
Trains et véhicules complets
Ta slovenski standard je istoveten z: EN 50121-3-1:2017
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50121-3-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2017
ICS 33.100.01; 45.060.01; 45.140 Supersedes EN 50121-3-1:2015
English Version
Railway applications - Electromagnetic compatibility - Part 3-1:
Rolling stock - Train and complete vehicle
Applications ferroviaires - Compatibilité électromagnétique - Bahnanwendungen - Elektromagnetische Verträglichkeit -
Partie 3-1: Matériel roulant - Trains et véhicules complets Teil 3-1: Bahnfahrzeuge - Zug und gesamtes Fahrzeug
This European Standard was approved by CENELEC on 2016-10-24. 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, Serbia, 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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50121-3-1:2017 E
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 Applicability . 7
5 Immunity requirements . 7
6 Emission tests and limits . 8
6.1 General . 8
6.2 Interference on outside party telecommunication lines . 8
6.2.1 Digital telecommunication lines . 8
6.2.2 Analogue telecommunication lines . 8
6.3 Radiated electromagnetic disturbances . 8
6.3.1 Test site . 8
6.3.2 Test conditions . 9
6.3.3 Emission limits . 10
Annex A (informative)  Interference on telecommunication lines . 12
Annex B (normative)  Radiated electromagnetic disturbances - Measurement procedure . 16
Annex C (informative) Emission values for lower frequency range . 17
Annex ZZ (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be covered . 19
Bibliography . 20

European foreword
This document (EN 50121-3-1:2017) 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) 2017-10-24
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2019-10-24
conflicting with this document have to
be withdrawn
This document supersedes EN 50121-3-1:2015.
EN 50121-3-1:2016 includes the following significant technical changes with respect to
EN 50121-3-1:2015:
— clarification of scope (Clause 1);
— set dated normative references (Clause 2);
— clarification of definition (Clause 3);
— clarification of applicability (Clause 4);
— clarification of interference on outside party telecommunication lines (6.2), psophometric current
(Annex A).
— moving emission values for radiated H-field in the frequency range 9 kHz to 150 kHz into new
Annex C due to the fact that:
a) there are very few outside world victims (e.g. radio services);
b) the radiated emission measured at 10m is not representative to the compatibility with internal
railway apparatus;
c) the EMC with other railway apparatus in this frequency range is covered in other
procedures and standards like the EN 50238 series;
d) there is low reproduceability;
— editorial corrections in the European foreword, the Scope and Annex A.
— revision of Annex ZZ.
This European Standard is to be read in conjunction with EN 50121-1.
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.
For the relationship with EU Directive see informative Annex ZZ, which is an integral part of this
document.
This standard forms Part 3-1 of the EN 50121 series 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.
Introduction
High power electronic equipment, together with low power microcontrollers and other electronic
devices, are being installed on trains in great numbers. Electromagnetic compatibility has therefore
become a critical issue for the design of train-related apparatus as well as of the train as a whole.
This Product Standard for rolling stock sets limits for electromagnetic emission and immunity in order
to ensure a well functioning system within its intended environment.
Immunity limits are not given for the complete vehicle. EN 50121-3-2 defines requirements for the
apparatus installed in the rolling stock, since it is impractical to test the complete unit. An EMC plan
includes equipment covered by this standard.
1 Scope
This European Standard specifies the emission and immunity requirements for all types of rolling
stock. It covers traction stock, hauled stock and trainsets including urban vehicles for use in city
streets. This European standard specifies the emission limits of the rolling stock to the outside world.
The scope of this part of the standard ends at the interface of the rolling stock with its respective
energy inputs and outputs. In the case of locomotives, trainsets, trams etc., this is the current collector
(pantograph, shoe gear). In the case of hauled stock, this is the AC or DC auxiliary power connector.
However, since the current collector is part of the traction stock, it is not entirely possible to exclude the
effects of this interface with the power supply line. The slow moving test has been designed to
minimize these effects.
There may be additional compatibility requirements within the railway system identified in the EMC plan
(e.g. as specified in EN 50238).
Basically, all apparatus to be integrated into a vehicle meet the requirements of EN 50121-3-2. In
exceptional cases, where apparatus meets another EMC Standard, but full compliance with
EN 50121-3-2 is not demonstrated, EMC is ensured by adequate integration measures of the
apparatus into the vehicle system and/or by an appropriate EMC analysis and test which justifies
deviating from EN 50121-3-2.
Electromagnetic interference concerning the railway system as a whole is dealt with in EN 50121-2.
These specific provisions are to be used in conjunction with the general provisions in EN 50121-1.
The frequency range considered is from 0 Hz (DC) to 400 GHz. No measurements need to be
performed at frequencies where no requirement is specified.
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 50121-2:2017, Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole
railway system to the outside world
EN 55016-1-1:2010+A2:2014, 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 50121-1:2017, Railway applications - Electromagnetic compatibility - Part 1: General
EN 50121-3-2:2016, Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock -
Apparatus
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
traction stock
electric and diesel locomotive, high speed trainset, elementary fixed combination of traction stock and
hauled stock, electric and diesel multiple unit (no locomotive, distributed traction equipment), Light
Railway Vehicle (LRV) such as tram, trolley bus or any other electrical vehicle for urban mass transit,
underground trainset
3.1.2
hauled stock
independent passenger coaches and freight wagons (if they contain electric apparatus such as
freezing equipment) which may be hauled in random combinations by different types of locomotives
3.1.3
main line vehicle
vehicle such as high speed train, suburban train, freight train, mainly designed to operate between
cities
3.1.4
urban vehicle
vehicle such as underground trainset, tram, LRV (Light Rail Vehicle), trolleybus, mainly designed to
operate within the boundary of a city
3.2 Abbreviations
AC Alternating current
bw Band width
DC Direct current
E Electric (field)
EMC Electromagnetic compatibility
EUT Equipment under test
H Magnetic (field)
ISDN Integrated Services Digital Network
ITU-T International Telegraph Union – Telecommunication Standardization Sector
LRV Light Rail Vehicle
PCM Pulse – code modulation
QC Quadrant converters
QP Quasi-Peak
xDSL all types of digital subscriber lines
4 Applicability
Generally, it is not possible to test electromagnetic compatibility invoking every function of the rolling
stock. The tests shall be made at typical operating modes considered to produce the largest emission.
The typical operating mode shall require all systems to be energised which are normally in continuous
operation during service. It is not necessary during the test to exercise systems which operate
transiently such as for example operation of internal doors, although they should be energised. It is not
necessary to test degraded modes of operation.
The configuration and mode of operation shall be specified in the test plan and the actual conditions
during the tests shall be precisely noted in the test report.
5 Immunity requirements
No tests are applied to the complete vehicle. It is expected that the assembly of the apparatus into a
complete vehicle will give adequate immunity, provided that an EMC plan has been prepared and
implemented, taking into account the requirements in EN 50121-3-2.
6 Emission tests and limits
6.1 General
The emission tests and limits for rolling stock in this standard should ensure as far as possible that the
rolling stock does not interfere with typical installations in the vicinity of the railway system.
Measurements shall be performed in well-defined and reproducible conditions. It is not possible to
totally separate the effects of the railway system and the stock under test. For radiated emissions, the
test conditions are defined in 6.3.1 and 6.3.2.
NOTE 1 Signalling and communication, train radio and other railway systems (axle counters, track circuits,
train control systems, etc.) are different in every country in terms of operating frequencies and waveforms.
Therefore, compatibility requirements are specified according to the type of signalling and communication
systems used (see e.g. EN 50238 series).
NOTE 2 There may be cases in which radio or other railway external services with working frequencies below
150 kHz are in operation close to the railway. The EMC management plan covers these cases and an adequate
level of emission from the railway on these working frequencies may be found in the values given in informative
Annex C hence no guarantee can be given for an undisturbed operation.
6.2 Interference on outside party telecommunication lines
6.2.1 Digital telecommunication lines
Interference with digital systems such as PCM, ISDN, xDSL are not covered in this European
Standard.
NOTE It should be noted that these systems operate in a higher frequency range using multiple carriers and
various automatic error correction protocols.
It is considered unlikely that rolling stock can produce sufficient interference in this frequency range.
6.2.2 Analogue telecommunication lines
No harmonized limits apply.
Information about interference on telecommunication lines can be found in Annex A.
6.3 Radiated electromagnetic disturbances
6.3.1 Test site
It can be assumed, that measurements will not take place in laboratory conditions. Trees, walls,
bridges, tunnels or other conductive objects in the vicinity of the measurement antenna could have an
impact on the measurement. Other railway vehicles operating in the same feeding section or nearby
the measuring point may affect the measurement result. Overhead/third rail discontinuities as well as
substations, power lines, buried lines, transformers, neutral sections, section insulators etc. close to
the measuring point may cause additional variations.
These influences shall be reduced as far as practical but in any case no obstacles above rail level
which may influence the measurements shall be located between antenna and EUT.
The overhead/third rail should be a continuous line as far as practical on both sides of the
measurement point (typically at least 200 m).
Since it is impossible to avoid the support masts of the overhead, the measurement point shall be at
the midpoint between masts, on the opposite side of the track (in case of a double track, on the side of
the track which is being used). If the railway system is powered by a third rail, the antenna shall be on
the same side of the track (worst case).
Since resonances may occur in the overhead line at radio-frequencies, it may be necessary to change
the test site. The exact location of the test site and features of both the site and the overhead system
layout shall be noted.
The contribution of the substation may be considered when assessing the emissions from the vehicle.
Note that the contribution of a DC substation depends on its load current and will not be measured
properly in a no-load condition.
At the beginning and at the end of the test series the ambient noise shall be recorded. This
measurement shall be done without any influence of the vehicle.
If at specific frequencies or in specific frequency ranges the ambient noise is higher than the limit
values less 6 dB, the measurements at these frequencies need not be considered. These frequencies
shall be noted in the test report.
NOTE It may be helpful to perform this ambient noise measurement also with the vehicle completely
powered down in fr
...