Railway applications - Rolling stock - Testing for electromagnetic compatibility with track circuits

This document defines the measurement and evaluation methods of rolling stock interference current emissions to demonstrate compatibility with track circuits. This includes rolling stock with or without traction equipment. The established limits for compatibility are defined in ERA/ERTMS/033281, PD CLC/TS 50238 2 or NNTRs as current flowing between the vehicle and the electric traction power supply system that can disturb the track circuit receiver, as part of the track circuit system. Additionally, the referred documents can define a minimum rolling stock impedance in order to guarantee compatibility between the electric traction power supply system and track circuits. This document is relevant to the interference current limits defined in the ‘frequency management’ for track circuits as defined in ERA/ERTMS/033281. It is also applicable to the demonstration of compatibility with all other types of track circuits which have established compatibility according to EN 50617 1. Finally, the methodology defined in this document can also be applied to other track circuit types, including those for which the only requirements are defined in National Notified Technical Rules. NOTE Interface parameters between rolling stock and track circuits other than interference currents and impedance are out of the scope of this document.

Bahnanwendungen - Fahrzeuge - Prüfung der elektromagnetischen Verträglichkeit mit Gleisstromkreisen

Applications ferroviaires - Matériel roulant - Essais pour la compatibilité électromagnétique avec les circuits de voie

Le présent document définit les méthodes de mesure et d'évaluation des courants perturbateurs générés par le matériel roulant dans le but de démontrer leur compatibilité avec les circuits de voie. Il couvre le matériel roulant avec ou sans équipement de traction. Les limites fixées pour la compatibilité sont définies dans le document ERA/ERTMS/033281, dans le document premier CLC/TS 50238 2 ou dans les règles techniques nationales notifiées (RTNN). Ces limites concernent les courants, qui circulent entre le véhicule et le réseau d'alimentation électrique de traction et qui peuvent perturber le récepteur du circuit de voie. Par ailleurs, les documents cités peuvent définir une impédance minimale pour le matériel roulant afin de garantir la compatibilité entre le réseau d'alimentation électrique de traction et les circuits de voie. Le présent document traite des limites de courant perturbateur établies dans le cadre de la « gestion des fréquences » pour les circuits de voie, définie dans le document ERA/ERTMS/033281. Il s'applique également à la démonstration de compatibilité avec tous les types de circuits de voie, dont la compatibilité a été démontrée conformément à l'EN 50617 1. Enfin, la méthodologie décrite dans le présent document peut également être mise en oeuvre pour d'autres types de circuits de voie, y compris ceux dont les exigences sont uniquement définies dans les RTNN. NOTE Les paramètres d'interface entre le matériel roulant et les autres circuits de voie, autres que les courants perturbateurs et l'impédance, ne relèvent pas du domaine d'application du présent document.

Železniške naprave - Vozna sredstva - Preskušanje elektromagnetne združljivosti s tirnimi tokokrogi

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Standards Content (Sample)

Železniške naprave - Vozna sredstva - Preskušanje elektromagnetne združljivosti s
tirnimi tokokrogi
Railway applications - Rolling stock - Testing for electromagnetic compatibility with track
Applications ferroviaires - Matériel roulant - Essais pour la compatibilité
électromagnétique avec les circuits de voie
Ta slovenski standard je istoveten z: prEN 50728
29.280 Električna vlečna oprema Electric traction equipment
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
45.060.10 Vlečna vozila Tractive stock
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

prEN 50728
March 2023
ICS 29.280; 45.060.10 -
English Version
Railway applications - Rolling stock - Testing for electromagnetic
compatibility with track circuits
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2023-06-16.

It has been drawn up by CLC/SC 9XB.

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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 69343 Ref. No. prEN 50728 E

prEN 50728:2023 (E)
Contents Page
European foreword . 6
Introduction . 7
1 Scope . 8
2 Normative references . 8
3 Terms, Definitions and Abbreviations . 8
3.1 Terms and Definitions . 8
3.2 Abbreviations . 13
4 Test specification . 14
4.1 Preparation . 14
4.1.1 General . 14
4.1.2 Vehicle data . 14
4.1.3 Applicable requirements . 15
4.1.4 Pre-analysis . 15
4.2 Test plan . 16
4.3 Test equipment . 16
4.3.1 Sensor location . 16
4.3.2 Current or voltage measurement . 16
4.3.3 Apparatus . 17
4.3.4 Other signals and information . 17
4.4 Test conditions . 17
4.4.1 Vehicles . 17
4.4.2 Infrastructure . 18
4.4.3 Environment . 20
4.5 Test procedure for vehicles . 21
4.5.1 Pre-tests . 21
4.5.2 Static tests . 21
4.5.3 Dynamic tests . 21
4.5.4 Online evaluation . 22
4.5.5 Long term tests . 22
4.6 Test conditions for separate auxiliary converters . 23
4.6.1 General . 23
4.6.2 Definition of requirements . 23
4.6.3 Test procedure . 23
4.7 Check of input impedance . 24
4.7.1 Passive Inductive impedance . 24
4.7.2 Passive Capacitive impedance . 24
4.7.3 Controller influence . 25
5 Evaluation . 25
prEN 50728:2023 (E)
5.1 General method . 25
5.2 Summation rules . 25
5.2.1 General . 25
5.2.2 Scaling from one to N sources . 25
5.2.3 Required number of tests and scaling of measurements of multiple sources . 27
5.2.4 Scaling Influence of Impedance . 28
5.3 Special effects . 29
5.3.1 Interlacing of converters . 29
5.3.2 Influence of external sources . 29
5.3.3 Resonances . 29
5.4 Phenomena to be discarded . 29
5.4.1 Variation of line voltage . 29
5.4.2 Variation of supply frequency . 29
5.4.3 Asymmetry in the public supply network and substation load . 29
5.4.4 Transients . 30
5.4.5 Other rolling stock . 30
5.4.6 Electric traction power supply system resonances . 30
5.5 Test report . 31
5.6 Pass / fail criteria . 31
Annex A (normative) Measurement equipment . 32
A.1 General . 32
A.2 Whole measurement chain . 32
A.3 Voltage sensors . 33
A.4 Current sensors . 33
A.5 Resonance damping devices for test . 33
Annex B (normative) Resonances . 34
B.1 Amplification factors . 34
B.2 Measurement setups . 36
B.3 Comparison with limits . 37
Annex C (informative) Handling of transients . 39
C.1 General . 39
C.2 Guidance . 39
C.3 Identification of the cause . 40
C.4 Recommendations . 41
C.5 Examples . 41
Annex D (informative) Substation, traction and auxiliary system structures . 45
D.1 General . 45
D.2 Overall system . 45
D.3 AC substations . 46
D.4 DC substations .

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