oSIST prEN 50728:2023
(Main)Railway applications - Rolling stock - Testing for electromagnetic compatibility with track circuits
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
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 50728:2023
01-maj-2023
Železniške naprave - Vozna sredstva - Preskušanje elektromagnetne združljivosti s
tirnimi tokokrogi
Railway applications - Rolling stock - Testing for electromagnetic compatibility with track
circuits
Applications ferroviaires - Matériel roulant - Essais pour la compatibilité
électromagnétique avec les circuits de voie
Ta slovenski standard je istoveten z: prEN 50728
ICS:
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
oSIST prEN 50728:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 50728:2023
EUROPEAN STANDARD DRAFT
prEN 50728
NORME EUROPÉENNE
EUROPÄISCHE NORM
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
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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
2
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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 . 46
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D.5 AC rolling stock . 48
D.6 DC rolling stock . 49
Annex E (informative) Background on summation rules . 51
E.1 Definitions . 51
E.2 Scaling factors . 51
E.3 Example: EMU with four power cars. 53
E.4 Example: Locomotive with two independent bogies . 54
E.5 Choice of summation rule . 55
Annex F (informative) Resonances . 58
F.1 General . 58
F.2 System definition. 58
F.3 Resonance amplification . 59
F.4 Relevance in railway systems . 61
F.5 Identification of resonances from measurements . 62
F.6 Example . 65
Annex G (informative) Converters with small input filters . 69
G.1 Introduction . 69
G.2 Problems with such converters . 69
G.3 Analysis . 69
G.4 Tests . 70
Annex H (informative) Superposition of interference from electric traction power supply system and rolling stock
. 71
H.1 General . 71
H.2 Equivalent circuit diagram . 71
H.3 AC systems . 72
H.4 DC systems . 72
Annex I (informative) Voltage versus current measurement in DC vehicles . 74
I.1 Traction system . 74
I.2 Goal . 74
I.3 Influence of a magnetic core . 74
I.4 Characteristics of an air cored inductor . 75
I.5 Resonances in the filter inductor . 76
Annex J (informative) Automatic data processing . 77
J.1 General . 77
J.2 Identification of interference source(s). 77
J.3 Characterization of identified interference sources . 78
J.4 Justification of completeness . 79
J.5 Transients . 79
J.6 Quantify the maximum value(s) of the respective interference source(s) . 79
Annex ZZ (informative) Relationship between this European Standard and the Essential Requirements of
EU Directive (EU) 2016/797 aimed to be covered. 80
4
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Bibliography . 81
5
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European foreword
This document (prEN 50728:2023) has been prepared by CLC/SC 9XB “Electromechanical material on board
rolling stock” of CLC/TC 9X “Electrical and electronic applications for railways”.
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
This document has been prepared under a Standardization Request given to CENELEC by the European
Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s)
/ Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an integral part of this
document.
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Introduction
This document defines the testing, measurement and evaluation methods for rolling stock interference current
emissions to demonstrate compatibility with track circuits. The evaluation is done at the interface between rolling
stock and infrastructure (the total interference current of the IU), and not at the receiver of a track circuit.
In the context of European interoperability, interference current limits for rolling stock are defined in the TSI
Interface document ERA/ERTMS/033281.
Outside European interoperability, individual limits and summation rules are defined in other documents such
as NNTRs and PD CLC/TS 50238-2. In specific application cases outside the scope of Interoperability
Regulations, limit values may be notified by the track circuit manufacturer, according to the process defined in
EN 50617-1.
Proof of compliance of rolling stock with the interference current limits is done in three main steps. First, a test
plan shall be defined, based on the specific characteristics of rolling stock to be tested (see 5). This shall ensure
that the final results give a sufficient confidence level of compliance. Then the tests are performed according to
the plan. Finally, the results shall be evaluated under a defined set of rules, in order to demonstrate compliance
with the given limits (see 6).
Tests for the demonstration of vehicle compatibility are type tests and shall be performed before the first unit is
put into regular service. When done according to this document, it is the goal to perform measurements only
once per electric traction power supply system voltage and frequency.
As far as possible, common requirements are defined for both AC and DC electric traction power supply
systems. However, these differ in several aspects. In AC systems, the impedance of the electric traction power
supply system is small compared with the impedance of the vehicle, but resonance effects have to be
considered. The main source of interference is the rolling stock. In DC systems, the impedance and, therefore,
the distance from substations, is important, but resonance effects are largely neglectable. Rectifier substations
have a significant contribution to the total interference current in DC systems, and also the traction and auxiliary
systems of DC rolling stock are normally different from those of AC. Where necessary or appropriate, this
document differentiates between AC and DC systems.
In order to limit the influence from static converters (AC) and substations (DC) on track circuits, a minimum
rolling stock impedance is required. This document defines how to prove conformity with such requirements as
well.
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oSIST prEN 50728:2023
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1 Scope
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 50388-1:2022, Railway Applications - Fixed installations and rolling stock - Technical criteria for the
coordination between electric traction power supply systems and rolling stock to achieve interoperability - Part 1:
General
1
EN 50163:2004, Railway applications. Supply voltages of traction systems
ISO/IEC Guide 98-3:2008, Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in
measurement (GUM:1995)
UIC 550:2005-04, Power supply installations for passenger stock
3 Terms, Definitions and Abbreviations
3.1 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
infrastructure
all fixed railway installations
Note 1 to entry: In the given context it includes the electric traction power supply system and train detection systems.
1
As impacted by EN 50163:2004/A1:2007, EN 50163:2004/corrigendum May 2010, EN 50163:2004/AC:2013,
EN 50163:2004/A2:2020, EN 50163:2004/A3:2022.
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3.1.2
electric traction power supply system
railway electric distribution network used to provide energy for rolling stock
Note 1 to entry: The system includes
— contact line systems,
— return circuit of electric traction systems,
— running rails of non-electric traction systems, which are in the vicinity of, and conductively connected to the running rails
of an electric traction system,
— electric installations, which are supplied from contact lines either directly or via a transformer,
— electric installations in power plants and substations, which are utilized solely for generation and distribution of power
directly to the contact line,
— electric installations of switching stations.
[SOURCE: IEC 60050-811:2017, 811-36-21], modified – “power supply” has been added in the term
3.1.3
substation
installation which supplies a contact line
Note 1 to entry: The voltage of a primary supply system, and in certain cases the frequency, is converted by the substation
to the voltage and frequency of the contact line.
3.1.4
influencing unit
IU
rolling stock influencing the train detection system
Note 1 to entry: One influencing
...
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