SIST EN 50121-3-2:2017

Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus

This European Standard applies to emission and immunity aspects of EMC for electrical and electronic apparatus intended for use on railway rolling stock. EN 50121-3-2 applies for the integration of apparatus on rolling stock.
The frequency range considered is from DC to 400 GHz. No measurements need to be performed at frequencies where no requirement is specified.
The application of tests shall depend on the particular apparatus, its configuration, its ports, its technology and its operating conditions.
This standard takes into account the internal environment of the railway rolling stock and the external environment of the railway, and interference to the apparatus from equipment such as hand-held radio-transmitters.
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 is 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.
This standard does not apply to transient emissions when starting or stopping the apparatus.
The objective of this standard is to define limits and test methods for electromagnetic emissions and immunity test requirements in relation to conducted and radiated disturbances.
These limits and tests represent essential electromagnetic compatibility requirements.
Emission requirements have been selected so as to ensure that disturbances generated by the apparatus operated normally on railway rolling stock do not exceed a level which could prevent other apparatus from operating as intended. The emission limits given in this standard take precedence over emission requirements for individual apparatus on board the rolling stock given in other standards.
Likewise, the immunity requirements have been selected so as to ensure an adequate level of immunity for rolling stock apparatus.
The levels do not however cover all cases which may occur with an extremely low probability of occurrence in any location. Specific requirements which deviate from this standard shall be specified.
Test requirements are specified for each port considered.
These specific provisions are to be used in conjunction with the general provisions in EN 50121-1.

Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 3-2: Bahnfahrzeuge - Geräte

Applications ferroviaires - Compatibilité électromagnétique - Partie 3-2: Matériel roulant - Appareils

La présente Norme Européenne s’applique aux aspects d’émission et d’immunité de CEM des appareils électriques et électroniques destinés à être utilisés à bord du matériel roulant ferroviaire. L'EN 50121-3-2 s’applique pour l’intégration des appareils à bord du matériel roulant.
La plage de fréquences concernée va du courant continu à 400 GHz. Aucun mesurage n’est nécessaire aux fréquences pour lesquelles aucune exigence n’est spécifiée.
L’application des essais doit dépendre des appareils eux-mêmes, de leur configuration, de leurs accès, de leur technologie et de leurs conditions de fonctionnement.
La présente Norme prend en compte l’environnement interne du matériel roulant ferroviaire et l'environnement externe du système ferroviaire, ainsi que les perturbations affectant les appareils provenant d'équipements tels que les émetteurs radioélectriques portables.
Si un accès est destiné à émettre ou recevoir des communications radio (émetteurs intentionnels de rayonnement, par exemple, systèmes de balise), alors les exigences relatives aux émissions rayonnées de la présente Norme ne s'appliquent pas à la transmission intentionnelle à partir d'un émetteur radio tel que défini par l'UIT.
Les limites d'immunité ne s'appliquent pas dans les bandes d'exclusion telles que définies dans la norme CEM correspondante pour les équipements radio.
La présente Norme ne s’applique pas aux émissions de transitoires lorsqu’on démarre ou lorsqu’on arrête les appareils.
L’objectif de la présente Norme est de définir les limites et les méthodes d’essai concernant les exigences d’essai d’immunité et d’émission électromagnétiques en matière de perturbations conduites et rayonnées.
Ces limites et ces essais représentent les exigences essentielles de compatibilité électromagnétique.
Les exigences d’émission ont été choisies pour assurer que les perturbations générées par l’appareil qui fonctionne normalement à bord du matériel roulant ferroviaire ne dépassent pas un niveau qui pourrait empêcher d’autres appareils de fonctionner comme prévu. Les limites d'émission données dans la présente Norme l'emportent sur les exigences d'émission des appareillages individuels embarqués sur le matériel roulant données dans les autres normes.
De la même manière, les exigences d’immunité ont été choisies pour assurer un niveau approprié d’immunité pour les appareils du matériel roulant.
Les niveaux ne couvrent cependant pas tous les cas qui peuvent apparaître avec une très faible probabilité en tout emplacement. On doit spécifier des exigences particulières qui s’écartent de la présente Norme.
Les exigences d’essai sont spécifiées pour chaque accès considéré.
Ces dispositions spécifiques sont destinées à être utilisées conjointement avec les dispositions générales de l'EN 50121-1.

Železniške naprave - Elektromagnetna združljivost - 3-2. del: Vozna sredstva - Naprave

Ta evropski standard se uporablja za vidike sevanja in odpornosti elektromagnetne združljivosti za električne in elektronske naprave, namenjene za uporabo v železniških vozilih. Standard EN 50121-3-2 se uporablja za integracijo naprav v voznih sredstvih.
Obravnavan frekvenčni razpon je od DC do 400 GHz. Za frekvence, za katere ni določenih zahtev, ni treba opraviti meritev.
Uporaba preskusov je odvisna od določenih naprav, njihovih konfiguracij, vrat, tehnologije in obratovalnih pogojev.
Ta standard upošteva notranje okolje železniškega vozila in zunanje okolje železnice ter motnje v napravah zaradi opreme, kot so ročni radijski oddajniki.
Če so vrata namenjena oddajanju ali sprejemanju za radijsko komunikacijo (namenski radiatorji, npr. sistemi transponderjev), se zahteva glede sevanja v tem standardu ne uporablja za namensko oddajanje radijskega oddajnika, kot je opredeljeno v ITU.
Omejitve odpornosti ne veljajo za pasove izključenosti, kakor je opredeljeno v ustreznem standardu glede elektromagnetne združljivosti za radijsko opremo.
Ta standard se ne uporablja za prehodno sevanje pri zagonu ali zaustavitvi naprave.
Cilj tega standarda je opredeliti mejne vrednosti in preskusne metode za zahteve glede elektromagnetnega sevanja in preskusa odpornosti v zvezi z prevodnimi in sevanimi motnjami.
Te mejne vrednosti in preskusi predstavljajo osnovne zahteve elektromagnetne združljivosti.
Zahteve glede sevanja so izbrane tako, da zagotavljajo, da motnje, ki jih proizvedejo naprave pri običajnem delovanju v železniških vozilih, ne presežejo ravni, ki bi lahko drugim napravam preprečila delovanje, za katerega so namenjene. Mejne vrednosti sevanja, podane v tem standardu, imajo prednost pred zahtevami glede sevanja posameznih naprav v voznem sredstvu, ki so podane v drugih standardih.
Prav tako so zahteve glede odpornosti izbrane tako, da zagotavljajo ustrezno raven odpornosti naprav v voznih sredstvih.
Vendar stopnje ne zajemajo vseh primerov, ki se lahko z zelo majhno verjetnostjo zgodijo na kateri koli lokaciji. Določiti je treba posebne zahteve, ki odstopajo od tega standarda.
Preskusne zahteve so določene za vsaka obravnavana vrata.
Te posebne določbe je treba uporabljati v povezavi s splošnimi določbami standarda EN 50121-1.

General Information

• Status: Published
• Publication Date: 13-Mar-2017
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: ŽEN - Electrical applications for railways
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Mar-2017
• Due Date: 11-May-2017
• Completion Date: 14-Mar-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)
• Directive: EUR-PUB - European Union - Public Standards
• 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: EN 50121-3-2:2016 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus

Relations

• Replaces: SIST EN 50121-3-2:2015 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
• Effective Date: 27-Dec-2016
• Amended By: SIST EN 50121-3-2:2017/A1:2019 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
• Effective Date: 08-May-2018
• Revised: oSIST prEN 50121-3-2:2025 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
• Effective Date: 09-Apr-2024
• Revised: kSIST FprEN 50121-3-2:2022 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
• Effective Date: 22-Dec-2020
• Revised: SIST EN 50121-3-2:2015 - Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
• Effective Date: 19-Jan-2016

Overview - EN 50121-3-2:2016 (Rolling stock - Apparatus)

EN 50121-3-2:2016 is the CENELEC European standard that defines electromagnetic compatibility (EMC) requirements for electrical and electronic apparatus intended for use on railway rolling stock. It covers emission and immunity aspects for apparatus integration on vehicles over the frequency range DC to 400 GHz. The standard’s objective is to specify limits and test methods for conducted and radiated disturbances so that apparatus operated on rolling stock do not interfere with other on-board systems and provide adequate immunity to the railway environment.

Key topics and technical requirements

• Scope & frequency range: Applies to apparatus integration on rolling stock; tests apply only where requirements are specified (DC–400 GHz).
• Port-based testing: EMC requirements are defined on a per-port basis (e.g., AC/DC power ports, I/O, earth, enclosure ports). Tests and applicability depend on the apparatus configuration, ports and operating conditions.
• Emission limits: Emission limits (e.g., enclosure ports) reference EN 61000-6-4; example conducted limits for power/battery ports include 99 dBµV quasi-peak (150 kHz–500 kHz) and 93 dBµV quasi-peak (500 kHz–30 MHz). Measurement distance is 10 m (3 m allowed with +10 dB). Emission limits in this Standard take precedence over individual on-board apparatus standards.
• Immunity requirements: Immunity limits are specified, with exclusion bands for radio equipment and intentional radiators (e.g., transponders) as defined by ITU and related EMC radio standards. Immunity does not apply within those exclusion bands.
• Performance criteria & test conditions: Manufacturers must define functional descriptions and performance criteria (per EN 50121-1 categories A/B/C). Tests are typically type tests and must be performed in representative operating modes and configurations; select ports where necessary (e.g., 20% or at least four similar ports).
• Exclusions & special cases: Transient emissions at start/stop are excluded. Traction converters and large auxiliary converters (>50 kVA) are evaluated when the whole vehicle is tested (see EN 50121-3-1).
• Normative references: EN 50121-1, EN 50121-3-1, EN 50155, EN 61000-4 series, EN 61000-6-4, EN 55016, EN 55022, etc.

Applications - who uses EN 50121-3-2

• Rolling stock equipment manufacturers (design and type testing)
• System integrators and vehicle OEMs (integration and compliance)
• EMC test laboratories (port-specific emission/immunity testing)
• Train operators and maintainers (specifying acceptance and interoperability limits)
  This standard is used to ensure reliable on-board operation, reduce cross-system interference and meet EU EMC regulatory expectations.

Related standards

• EN 50121-1 (General) - essential companion for procedures and criteria
• EN 50121-3-1 (Train and complete vehicle)
• EN 50155 (Electronic equipment on rolling stock)
• EN 61000-4 series and EN 61000-6-4 (EMC test techniques and emissions)
• EN 55016 / EN 55022 (measurement methods and ITE limits)

For compliance planning, read EN 50121-3-2 together with EN 50121-1 and applicable EN 61000 basic standards. Keywords: EN 50121-3-2, electromagnetic compatibility, EMC, railway rolling stock, emission limits, immunity tests, rolling stock apparatus.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2017
1DGRPHãþD
SIST EN 50121-3-2:2015
Železniške naprave - Elektromagnetna združljivost - 3-2. del: Vozna sredstva -
Naprave
Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus
Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 3-2: Bahnfahrzeuge -
Geräte
Applications ferroviaires - Compatibilité électromagnétique - Partie 3-2: Matériel roulant -
Appareils
Ta slovenski standard je istoveten z: EN 50121-3-2:2016
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 50121-3-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2016
ICS 33.100.01; 45.060.01 Supersedes EN 50121-3-2:2015
English Version
Railway applications - Electromagnetic compatibility - Part 3-2:
Rolling stock - Apparatus
Applications ferroviaires - Compatibilité électromagnétique - Bahnanwendungen - Elektromagnetische Verträglichkeit -
Partie 3-2: Matériel roulant - Appareils Teil 3-2: Bahnfahrzeuge - Geräte
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, 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
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50121-3-2:2016 E
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 Performance criteria. 7
5 Conditions during testing. 8
6 Applicability . 8
7 Emission tests and limits . 8
8 Immunity requirements . 11
Annex A (informative) Examples of apparatus and ports . 16
Annex B (informative) Conducted disturbances generated by power converters . 22
Annex ZZ (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be covered . 23
Bibliography . 24

European foreword
This document (EN 50121-3-2:2016) 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) [2017-07-24]
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 50121-3-2:2015.
EN 50121-3-2:2015:
— clarification of scope (Clause 1);
— set dated normative references (Clause 2);
— new definition of ports and clarification in Tables 1 to 5;
— emission requirement extended in the frequency range 1 GHz to 6 GHz following EN 61000-6-4;
— immunity requirement extended in the frequency range 5,1 GHz to 6 GHz;
— revision of Annex B;
— editorial corrections in Figure 1 and Table B.1;
— revision of Annex ZZ.
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 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 3-2 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.
1 Scope
This European Standard applies to emission and immunity aspects of EMC for electrical and electronic
apparatus intended for use on railway rolling stock. EN 50121-3-2 applies for the integration of
apparatus on rolling stock.
The frequency range considered is from DC to 400 GHz. No measurements need to be performed at
frequencies where no requirement is specified.
The application of tests shall depend on the particular apparatus, its configuration, its ports, its
technology and its operating conditions.
This standard takes into account the internal environment of the railway rolling stock and the external
environment of the railway, and interference to the apparatus from equipment such as hand-held radio-
transmitters.
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 is 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.
This standard does not apply to transient emissions when starting or stopping the apparatus.
The objective of this standard is to define limits and test methods for electromagnetic emissions and
immunity test requirements in relation to conducted and radiated disturbances.
These limits and tests represent essential electromagnetic compatibility requirements.
Emission requirements have been selected so as to ensure that disturbances generated by the
apparatus operated normally on railway rolling stock do not exceed a level which could prevent other
apparatus from operating as intended. The emission limits given in this standard take precedence over
emission requirements for individual apparatus on board the rolling stock given in other standards.
Likewise, the immunity requirements have been selected so as to ensure an adequate level of
immunity for rolling stock apparatus.
The levels do not however cover all cases which may occur with an extremely low probability of
occurrence in any location. Specific requirements which deviate from this standard shall be specified.
Test requirements are specified for each port considered.
These specific provisions are to be used in conjunction with the general provisions in 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 50121-1:2017, Railway applications - Electromagnetic compatibility - Part 1: General
EN 50121-3-1:2017, Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock -
Train and complete vehicle
EN 50155:2007, Railway applications - Electronic equipment used on rolling stock
EN 55016-2-1:2014, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance
measurements (CISPR 16-2-:2014)
EN 55022:2010, Information technology equipment - Radio disturbance characteristics - Limits and
methods of measurement (CISPR 22:2008, modified)
EN 61000-4-2:2009, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test (IEC 61000-4-2:2008)
EN 61000-4-3:2006, Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency, electromagnetic field immunity test (IEC 61000-4-3:2006)
EN 61000-4-4:2012, Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test (IEC 61000-4-4:2012)
EN 61000-4-5:2014, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement
techniques - Surge immunity test (IEC 61000-4-5:2014)
EN 61000-4-6:2014, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
techniques - Immunity to conducted disturbances, induced by radio-frequency fields (IEC 61000-4-
5:2013)
EN 61000-4-30:2015, Electromagnetic compatibility (EMC) - Part 4-30: Testing and measurement
techniques - Power quality measurement methods (IEC 61000-4-30:2015)
EN 61000-6-4:2007 , Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission
standard for industrial environments (IEC 61000-6-4:2006)
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
rolling stock apparatus
finished product with an intrinsic function intended for implementation into the rolling stock installation
3.1.2
port
particular interface of the specified apparatus with the external environment
EXAMPLE AC power port, DC power port, I/O (input/output) port, earth port.
[SOURCE: IEC 60050-821:2015, 821-11-36]

As impacted by EN 61000-6-4:2007/A1.
3.1.3
enclosure port
physical boundary of the apparatus through which electromagnetic fields may radiate or impinge
Note 1 to entry: The main categories of ports for rolling stock apparatus are presented in Figure 1.

Figure 1 — Main categories of ports
Typical examples of rolling stock apparatus with their ports are listed in Annex A
Traction power ports are not covered in this European Standard see Annex B
3.2 Abbreviations
AC Alternating current
AM Amplitude modulation
CISPR Comité international spécial des perturbations radioélectriques
DC Direct current
EMC Electromagnetic compatibility
I/O Input / Output
ITU International Telegraph Union
PC Personal computer
THD Total harmonic distortion
TV Television
4 Performance criteria
The variety and the diversity of the apparatus within the scope of this standard make it difficult to define
precise criteria for the evaluation of the immunity test results.
A functional description and a definition of performance criteria, during or as a consequence of the
EMC testing, shall be provided by the manufacturer and noted in the test report, based on the criteria
A, B, C defined in EN 50121-1:2017.
5 Conditions during testing
It is not always possible to test every function of the apparatus. The tests shall be made at a typical
operating mode considered by the manufacturer to produce the largest emission or maximum
susceptibility to noise as appropriate in the frequency band being investigated consistent with normal
applications. The conditions during testing shall be defined in a test plan (see basic standard of the
EN 61000-4 series).
If the apparatus is part of a system, or can be connected to auxiliary apparatus, then the apparatus
shall be tested while connected to the minimum configuration of auxiliary apparatus necessary to
exercise the ports in accordance e.g. with EN 55022:2010, Clause 8.
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.
If the apparatus has a large number of similar ports or ports with many similar connections, then a
sufficient number shall be selected to simulate actual operating conditions and to ensure that all the
different types of termination are covered (e.g. 20 % of the ports or at least four ports).
The tests shall be carried out within the specified operating range for the apparatus and at its nominal
supply voltage, unless otherwise indicated.
6 Applicability
The measurements in this standard shall be made on the relevant ports of the apparatus.
It may be determined from consideration of the electrical characteristics, the connection and the usage
of a particular apparatus that some of the tests are not applicable (e.g. radiated immunity of induction
motors, transformers). In such cases, the decision not to test has to be recorded in the test plan and
test report.
If not otherwise specified, the EMC tests shall be type tests.
7 Emission tests and limits
The emission tests and limits for apparatus covered by this standard are given on a port by port basis.
Measurements shall be performed in well-defined and reproducible conditions for each type of
disturbance.
The emission limits defined in EN 61000-6-4, Table 1 (Emission – enclosure port) shall be complied
with.
Measurement distance is 10m according line 1.1 in Table 1 of EN 61000-6-4. A measurement distance
of 3m may be used with the limit increased by 10 dB.
Traction converters and auxiliary converters over 50 kVA cannot be tested individually but when the
vehicle is tested as a whole in accordance with EN 50121-3-1.
The description of the test, the test methods and the test set-up are given in Basic Standards which
are referred to in Tables 1 and 2.
The contents of these Basic Standards are not repeated here, however modifications or additional
information needed for the practical application of the tests are given in this standard.
NOTE The reference to “Basic Standard“ is intended to be limited to those parts of the standard that give
the description of the test, the test methods and the test set-up.
Table 1 — Emission – Auxiliary AC or DC power ports (input and output)
Test Basic Test Applicability
Port Remarks
specification Standard set-up note
a b c
1.1 Auxiliary supply 150 kHz to 500 kHz 99 dBμV quasi- EN 55016– EN 55016– See  and For the time being there are no
peak 2–1 2–1 limits for shore supply mode.
sinusoidal AC or DC
Therefore the limits given in this
(port 9 on Figures A.1,
500 kHz to
...