SIST EN 50617-1:2015

Railways applications - Basic parameters of train detection systems - Part 1: Track circuits

This European Standard specifies the technical parameters of track circuits associated with the disturbing
current emissions limits for RST in the context of interoperability defined in the form of Frequency
Management. The limits for compatibility between rolling stock and track circuits currently proposed in this
standard allow provision for known interference phenomena linked to traction power supply and associated
protection (over voltage, short-circuit current and basic transient effects like in-rush current and power cut-off).
These effects are assessed using modelling tools that have been verified by the past European research
project RAILCOM.
This European Standard is intended to be used to assess compliance of track circuits equipment and other
forms of train detection systems using the rails as part of their detection principles, in the context of the
European Directive on the interoperability of the trans-European railway system and the associated technical
specification for interoperability relating to the control-command and signalling track-side subsystems.
The European Standard describes technical parameters to consider for achieving the compatibility of the track
circuit with the emissions limits defined in the frequency management for rolling stock. These parameters are
structured and allocated according to their basic references as follows:
- Technical track circuit parameters;
- Train based parameters;
- Track based parameters;
- Environmental and other parameters including EMC.
Each parameter is defined by a short general description, the definition of the requirement, the relation to
other standards and a procedure to show the fulfilment of the requirement as far as necessary. An overview of
the safety relevance of each parameter is given – in the context of this European Standard – in a separate
table.
NOTE The allocated bands for track circuits and emission limits for rolling stock defined in the Frequency Management
are currently used as input information to define mandatory requirements to be stated in index 77 of CCS TSI. The
evaluation is conducted by the European Railway Agency.
The immunity limits of the track circuits installed on non-interoperable lines, or on interoperable lines built
before the publication date of this document, are not defined in this European Standard and remain the
responsibility of individual infrastructure managers, NSAs and/or suppliers of train detection systems. In this
case, the limits for compatibility are usually given in the infrastructure registers and/or the notified national
rules.
This European Standard is applicable to track circuits installed on all traction power supply lines, including
non-electrified lines. However, for track circuits intended to be installed only on non-electrified lines, some
parameters may be not applicable.

Bahnanwendungen - Basic Parameters der Gleisfreimeldesystemen - Teil 1: Gleisstromkreisen

Applications ferroviaires - Paramètres de base des systèmes de détection des trains - Partie 1: Circuits de voie

Železniške naprave - Osnovni parametri sistemov za detekcijo vlakov - 1. del: Tirni tokokrog

Ta evropski standard določa tehnične parametre tirnih tokokrogov, povezanih z motečimi tokovnimi omejitvami emisij za RST v okviru interoperabilnosti, opredeljene v obliki upravljanja s frekvencami. Omejitve za združljivost železniških vozil in tirnih tokokrogov, trenutno predlagane v tem standardu, omogočajo določbe za znane motilne pojave, povezane z vlečnim napajanjem ter povezano zaščito (prenapetost, kratkostični tok in osnovni prehodni učinki, kot so vklopni tok ter prekinitev napajanja). Ti učinki se ocenijo z uporabo modelirnih orodij, ki jih je overil pretekli evropski raziskovalni projekt RAILCOM. Ta evropski standard je namenjen uporabi za oceno skladnosti opreme tirnih tokokrogov in drugih oblik sistemov za detekcijo vlakov z uporabo tirov kot del načel detekcije, v okviru evropske direktive o interoperabilnosti vseevropskega železniškega sistema in povezane tehnične specifikacije za interoperabilnost, ki se nanaša na podsistema za upravljanje-vodenje in signaliziranje ob progi. Evropski standard opisuje tehnične parametre, ki jih je treba obravnavati za doseganje združljivosti tirnih tokokrogov z omejitvami emisij, opredeljenimi v okviru upravljanja s frekvencami za železniška vozila. Ti parametri so strukturirani in dodeljeni v skladu z njihovimi osnovnimi sklicevanji, kot sledi:
– tehnični parametri tirnih tokokrogov;
– parametri na podlagi vlaka;
– parametri na podlagi tirov;
– okoljski in drugi parametri, vključno z EMC.
Vsak parameter je opredeljen s kratkim splošnim opisom, definicijo zahteve, povezavo z drugimi standardi in postopkom za prikaz izpolnitve zahteve, kolikor je potrebno. Pregled varnostnega pomena vsakega parametra je v okviru tega evropskega standarda podan v ločeni tabeli.
OPOMBA: Dodeljeni pasovi za tirne tokokroge in omejitve emisij za železniška vozila, opredeljene v okviru upravljanja s frekvencami, se trenutno uporabljajo za vhodne informacije za opredelitev obveznih zahtev, ki se navedejo v indeksu 77 CCS TSI. Oceno izvede Evropska železniška agencija.
Omejitve imunosti tirnih tokokrogov, nameščenih na neinteroperabilnih progah ali na interoperabilnih progah, zgrajenih pred datumom izdaje tega dokumenta, niso opredeljene v tem evropskem standardu in ostajajo odgovornost posameznih infrastrukturnih upravljavcev, nacionalnih varnostnih organov in/ali dobaviteljev sistemov za detekcijo vlakov. V tem primeru so omejitve za združljivost običajno navedene v infrastrukturnih registrih in/ali priglašenih nacionalnih pravilih.
Ta evropski standard se uporablja za tirne tokokroge, nameščene na vseh vlečnih napajalnih progah, vključno z neelektrificiranimi progami. Vendar se za tirne tokokroge, namenjene namestitvi samo na neelektrificiranih progah, nekateri parametri mogoče ne uporabljajo.

General Information

• Status: Published
• Public Enquiry End Date: 12-Dec-2013
• Publication Date: 28-Jul-2015
• ICS: 45.020 - Railway engineering in general
• Technical Committee: ŽEN - Electrical applications for railways
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 15-Jun-2015
• Due Date: 20-Aug-2015
• Completion Date: 29-Jul-2015
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Ref Project: EN 50617-1:2015 - Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits

Relations

• Revised: kSIST fprEN 50617-1:2023 - Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits
• Effective Date: 03-Mar-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50617-1:2015
01-september-2015
Železniške naprave - Osnovni parametri sistemov za detekcijo vlakov - 1. del: Tirni
tokokrog
Railways applications - Basic parameters of train detection systems - Part 1: Track
circuits
Bahnanwendungen - Basic Parameters der Gleisfreimeldesystemen - Teil 1:
Gleisstromkreisen
Applications ferroviaires - Paramètres de base des systèmes de détection des trains -
Partie 1: Circuits de voie
Ta slovenski standard je istoveten z: EN 50617-1:2015
ICS:
45.020 Železniška tehnika na Railway engineering in
splošno general
SIST EN 50617-1:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50617-1:2015

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SIST EN 50617-1:2015


EUROPEAN STANDARD EN 50617-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2015
ICS 29.280

English Version
Railway applications - Technical parameters of train detection
systems for the interoperability of the trans-European railway
system - Part 1: Track circuits
Applications ferroviaires - Paramètres techniques des Bahnanwendungen - Technische Parameter von
systèmes de détection des trains - Partie 1: Circuits de voie Gleisfreimeldesystemen - Teil 1: Gleisstromkreisen
This European Standard was approved by CENELEC on 2015-03-09. 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
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50617-1:2015 E

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SIST EN 50617-1:2015
EN 50617-1:2015 (E)
Contents Page
Foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 9
4 Description of train detection system . 10
5 Safety relevance of parameters . 11
6 Technical track circuit parameters . 12
6.1 TC non-Detection zone . 12
6.1.1 General . 12
6.1.2 Requirements . 12
6.2 Track circuit length . 12
6.2.1 General . 12
6.2.2 TC Minimum length of detection - Requirement. 12
6.2.3 TC Maximum length of detection - Requirement . 12
6.3 Broken rail detection . 13
6.3.1 General . 13
6.3.2 Requirements . 13
6.4 IRJ failure detection . 14
6.4.1 General . 14
6.4.2 Requirement . 14
6.5 Frequency management and relevant parameters of the track circuit . 14
6.5.1 Frequencies and immunity limits . 14
6.5.2 Number of operational channels . 15
6.5.3 Separation between operational channels / channel bandwidth . 15
6.6 Coding . 16
6.6.1 General . 16
6.6.2 Type of coding . 16
6.6.3 Requirements . 17
6.7 Response of the receiver to transient disturbances . 17
6.7.1 General . 17
6.7.2 Switched sinusoidal signal . 17
6.7.3 Other signals . 19
6.7.4 Validation of the response of the receiver to transient disturbances . 19
6.8 RAMS . 20
6.8.1 Reliability . 20
6.8.2 Availability . 20
6.8.3 Maintainability . 20
6.8.4 Safety . 21
6.8.5 Validation of all RAMS parameters . 21
7 Train based parameter - Shunt impedance . 21
7.1 General . 21
7.2 Requirements . 22
8 Track based parameters . 22
8.1 Total impedance of the track . 22
8.1.1 General . 22
8.1.2 Requirements . 23
8.2 Rail to Earth impedance . 24
8.2.1 General . 24
8.2.2 Limits and requirements . 24
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SIST EN 50617-1:2015
EN 50617-1:2015 (E)
8.2.3 Validation . 25
8.3 Rail surface resistance / track quality . 25
8.4 Insulation value of IRJ . 25
8.4.1 General . 25
8.4.2 Requirements and validation . 25
8.5 Type of sleepers / track structure . 26
8.5.1 General . 26
8.5.2 Definition of the parameter . 26
8.5.3 Requirement and validation . 26
8.6 Ballast resistance . 27
8.6.1 General . 27
8.6.2 Definition of the parameter . 27
8.6.3 Requirements for validation . 27
8.7 Maximum time between train movements . 27
8.7.1 General . 27
8.7.2 Definition of the parameter . 27
8.7.3 Requirements and validation . 27
8.8 Unbalance of the return current . 28
8.8.1 General . 28
8.8.2 Requirements and validation . 28
9 Environmental and other parameters . 28
9.1 Signalling power supply quality with respect to availability . 28
9.1.1 General . 28
9.1.2 Requirements and validation . 28
9.2 Traction power supply quality . 29

9.2.1 General . 29
9.2.2 Definition of the parameter . 29
9.2.3 Requirements and validation . 29
9.3 Amount of sand . 29
9.3.1 General . 29
9.3.2 Definition of parameter . 30
9.3.3 Requirements and validation . 30
9.4 Weather, ice and other environmental conditions . 30
9.4.1 Temperature . 30
9.4.2 Pressure/Airflow . 30
9.4.3 Humidity . 31
9.4.4 Precipitation . 31
9.4.5 Solar radiation . 32
9.4.6 Protection level (IP) . 32
9.4.7 Vibrations / shock . 33
9.5 EMC . 33
9.5.1 General . 33
9.5.2 Requirement and validation for EMC with respect to vehicles . 33
9.5.3 Requirement and validation for EMC with radio transmitters . 33
9.5.4 Requirement and validation for overvoltage protection (including indirect lightning
effects) . 33
Annex A (informative)  Guidance for usual safety relevance of parameters . 34
Annex B (informative)  Scenarios for non-detection zone . 36
B.1 Overlap of two detection zones using isolated rail joints (distance x in figure below) . 36
B.2 Overlap of a dead zone in S&C area . 36
B.3 Equipotential wires in S&C area . 38
B.4 Zone without detection in electrical joints. 39
Annex C (informative)  Track circuit length . 42
C.1 Introduction . 42
C.2 Example of TC with S-bond . 42
C.2.1 Introduction . 42
C.2.2 TC minimum length depending on the S-bond length . 42
C.2.3 TC minimum length depending on the speed of the train, drop-away delay, route release
delay and tolerances . 43
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SIST EN 50617-1:2015
EN 50617-1:2015 (E)
C.2.4 TC Minimum length relating to RST . 43
Annex D (informative)  Scenarios for broken rail Relation Track circuit – Broken rail detection . 45
D.1 Basic principle . 45
D.2 Fail safe system . 46
D.3 Examples where the broken rail detection is not possible. . 47
D.3.1 S&C area . 47
D.3.2 Single rail isolation . 47
D.3.3 Parallel paths of other tracks circuits or (and) earthing connections . 47
Annex E (informative) Frequency management . 48
E.1 Frequencies and immunity limits . 48
E.1.1 Frequency bands of operation . 48
E.1.2 Parameters for evaluation. 48
E.1.3 TC Compatibility limits . 48
E.1.4 Immunity to in-band interference . 49
E.1.5 Immunity to harmonics frequency from traction power supply (1,5 kHz to 2,65 kHz in DC
and 50 Hz power systems only) . 50
E.1.6 Validation of immunity . 51
E.2 Background to development . 54
E.2.1 Introduction . 54
E.2.2 Approach to Frequency Management . 55
E.2.3 Future Track Circuits and Frequency Management . 55
E.2.4 Future RST and Frequency Management . 55
E.2.5 Application of FrM to existing generation Track Circuits . 55
E.3 Frequency management – Emission limits for rolling stock . 56
E.3.1 General . 56
E.3.2 Emission limits for rolling stock supplied under DC power systems . 56
E.3.3 Emission limits for rolling stock supplied under 16,7 Hz power systems . 57
E.3.4 Emission limits for rolling stock supplied under 50 Hz power systems . 57
Annex F (informative)  Vehicle Impedance / guidance for RST design to support the FrM . 58
F.1 Definition of the parameter . 58
F.2 Justification of the parameter . 58
F.3 Limits and RST requirements . 58
F.3.1 For DC traction: . 58
F.3.2 For both AC and DC traction: . 58
F.4 Validation of the parameter . 58
Annex G (informative) Example of elements of maintenance for existing track circuits . 59
Annex H (informative) Example of management of shunt impedance. 64
Annex I (informative) . 66
I.1 Physical factors . 66
I.2 Symmetric rail- ground resistance . 67
I.3 Values from experience . 67
I.4 Asymmetric rail- ground resistance . 67
I.5 Touch Potential Effects . 68
Annex J (informative) Example of mechanical test for IRJ . 70
J.1 General . 70
J.2 Testing program . 71
Annex K (informative) Example of existing requirement for the type of sleepers / track structure . 73
K.1 Typical value for a ballast resistance . 73
K.2 Infrabel . 73
K.3 DB . 73
K.3.1 Wooden sleepers . 73
K.3.2 Concrete sleepers . 73
K.3.3 Slab tracks . 74
Annex L (informative) Example of application for different safety requirements . 75
L.1 Lower safety integrity level (less than SIL 4) . 75
L.2 Highest safety integrity level (SIL 4) . 75
Annex ZZ (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2008/57/EC . 76
Bibliography . 80
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SIST EN 50617-1:2015
EN 50617-1:2015 (E)
Foreword
This document (EN 50617-1:2015) has been prepared by CLC/SC 9XA "Communication, signalling and
processing systems" of CLC/TC 9X "Electrical and electronic applications for railways".
The following dates are fixed:
• latest date by which this document has to be (dop) 2016-03-09
implemented at national level by publication of
an identical national standard or by
endorsement
(dow) 2018-03-09
• latest date by which the national standards
conflicting with this document have to
be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] 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 relationship with EU Directive 2008/57/EC amended by Commission Directive 2011/18/EU, see
informative Annex ZZ, which is an integral part of this document.
EN 50617, Railway applications – Technical parameters of train detection systems, will consist of
- Part 1: Track circuits;
- Part 2: Axle counters.
5

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SIST EN 50617-1:2015
EN 50617-1:2015 (E)
Introduction
The working group SC9XA WGA4-2 has developed the limits for electromagnetic compatibility between rolling
stock and train detection systems, specifically track circuits and axle counter systems and correspondingly
published two technical specifications CLC/TS 50238-2 and CLC/TS 50238-3. These limits and associated
measurem
...