CLC/TS 50238-2:2015

SLOVENSKI STANDARD
01-julij-2015
1DGRPHãþD
SIST-TS CLC/TS 50238-2:2010
SIST-TS CLC/TS 50238-2:2010/AC:2011
Železniške naprave - Združljivost voznih sredstev in sistemov za detekcijo vlaka -
2. del: Združljivost s tirnimi tokokrogi
Railway applications - Compatibility between rolling stock and train detection systems -
Part 2: Compatibility with track circuits
Ta slovenski standard je istoveten z: CLC/TS 50238-2:2015
ICS:
03.220.30 Železniški transport Transport by rail
45.060.10 9OHþQDYR]LOD Tractive stock
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC/TS 50238-2

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
May 2015
ICS 29.280; 45.060.10 Supersedes CLC/TS 50238-2:2010
English Version
Railway applications - Compatibility between rolling stock and
train detection systems - Part 2: Compatibility with track circuits
Applications ferroviaires - Compatibilité entre le matériel Bahnanwendungen - Kompatibilität zwischen Fahrzeugen
roulant et les systèmes de détection des trains - Partie 2 - und Gleisfreimeldesystemen - Teil 2: Kompatibilität mit
Compatibilité avec les circuits de voie Gleisstromkreisen
This Technical Specification was approved by CENELEC on 2015-04-20.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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. CLC/TS 50238-2:2015 E

Contents
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 General aspects of interference current limits for RST. 10
4.1 Derivation of interference current limits for RST . 10
4.2 Application of Interference current limits to RST design . 11
4.3 System definition . 11
Annex A (normative) Interference current limits for RST . 14
A.1 Definitions . 14
A.2 Preferred track circuits for DC traction . 14
A.3 Preferred track circuits for RST for 16,7 Hz traction . 15
A.4 Preferred track circuits for RST for 50 Hz traction . 15
A.5 UGSK3 . 16
A.6 UGSK95 . 16
A.7 FTGS 46 / FTGS 917/TCM100 . 16
A.8 GRS . 17
A.9 Jade . 17
A.10 Coded track circuits for DC traction. 18
A.11 Digicode . 18
A.12 CoRTo . 18
A.13 CBDAC . 19
A.14 Preferred track circuit in Czech Republic . 19
A.15 All kind of UM71 equipped with RENUM receptor and UC 9500 . 20
A.16 DC track circuits in UK . 20
A.17 EBI Track 200 (TI21) . 21
A.18 EBI Track 400 . 21
A.19 FS3000 . 22
A.20 FS2000 / FS 2500 / FS 2550 / FS 5000 . 23
A.21 Track circuits of 95 Hz and 105 Hz in Norway . 23
A.22 JRK 10470 . 24
Annex B (normative) Rolling Stock Interference Evaluation methods . 25
B.1 General . 25
B.2 Selected evaluation method . 25
B.3 Derivation of the interference current limits for RST . 26
B.4 Criteria for compatibility . 27
B.4.1 Location . 27
B.4.2 Criteria 27
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B.4.3 Safety and availability . 27
B.5 Defined interference current limits for RST: for use under interoperability regulation . 27
B.6 Test specifications for RST interference measurements . 27
B.6.1 General . 27
B.6.2 Purpose of compatibility tests . 28
B.7 Test equipment requirements (hardware) . 31
B.8 Train interference analysis and evaluation methods . 31
B.8.1 Evaluation method . 31
B.8.2 Summation rules . 32
B.9 Requirements for on-train interference monitoring and control . 33
B.10 Documentation . 34
Annex C (informative) Infrastructure data . 35
C.1 Supply frequency . 35
C.2 Infrastructure characterization . 35
C.3 Power supply impedance . 36
C.4 Approximate calculation of the lowest power supply resonance frequency . 36
C.5 Simplified method to handle resonance effects with roof cables . 37
C.6 Return current transfer function . 39
Annex D (informative) Typical voltage resonance graphs . 40
D.1 General . 40
D.2 Interface voltage/current measurement . 40
D.3 Voltage resonance graphs for 15 kV 16,7 Hz network . 40
D.4 Voltage resonance graphs for 25 kV, 50 Hz network . 41
D.5 Voltage resonance graphs for 1 500 V DC network . 41
D.6 Voltage resonance graphs for 3 000 V DC network . 42
Bibliography . 43

Figures
Figure 1 — Examples of IUs . 9
Figure 2 — System configuration considered for interference . 12
Figure B.1 — Time domain method . 26
Figure B.2 — Superposition factors . 33
Figure C.1 — Infrastructure characterization . 35
Figure C.2 — Power supply admittance . 36
Figure C.3 — Resonance effects for various RST positions. 38
Figure C.4 — Resonance effects for various RST input capacitance . 39
Figure D.1 — Voltage resonance graph for 15 kV 16,7 Hz network . 41
Figure D.2 — Voltage resonance graphs for 25 kV 50 Hz network . 41
Figure D.3 — Voltage resonance graphs for 1 500 V DC network . 42
Figure D.4 — Impedance graphs for 3 000 V DC network . 42

Tables
Table A.1 — UGSK3 . 16
Table A.2 — UGSK95 . 16
Table A.3 — FTGS/TCM100 . 16
Table A.4 — GRS . 17
Table A.5 — GRS - limits due to rectifying traction supply . 17
Table A.6 — Jade 25 kV, 50 Hz lines . 17
Table A.7 — Jade DC lines . 18
Table A.8 — Limits for BACC and CDB 83,3 Hz . 18
Table A.9 — Digicode . 18
Table A.10 — CoRTo . 18
Table A.11 — CBDAC . 19
Table A.12 — 50 Hz AC and DC Traction . 19
Table A.13 — UM71 C, UM71 CB, UM71C TVM and UC9500 . 20
Table A.14 — DC track circuits in UK . 20
Table A.15 — EBI Track 200 (TI-21) Double Rail Limit for in-band frequencies — AC traction
only . 21
Table A.16 — EBI Track 200 (TI-21) Double Rail Limit for in-band frequencies — DC traction or
non-electrified lines . 21
Table A.17 — EBI Track 400 Open Line Frequency Double Rail Track Circuit Limit for in-band
frequencies . 21
Table A.18 — EBI Track 400 Open Line Frequency Double Rail Track Circuit Limit for out of
band frequencies . 22
Table A.19 — EBI Track 400 Station Area Frequency Double Rail Track Circuit Limit . 22
Table A.20 — FS3000 3 kV, DC lines . 22
Table A.21 — FS3000 25 kV, 50 Hz lines. 23
Table A.22 — FS2000 / FS 2500 / FS 2550 / FS 5000 3 kV, DC lines . 23
Table A.23 — Track circuits of 95 Hz and 105 Hz in Norway . 23
Table A.24 — JRK 10470 . 24
Table B.1 — Reduction factors for capacitive input impedance . 30
Table B.2 — Summation categories . 32
Table B.3 — K factor values . 33
Table C.1 — Supply frequency . 35
Table C.2 — Capacitance parameters for electrified lines . 37
Table C.3 — No-load supply voltage levels . 37
Table D.1 — Measurement parameters . 40
Table D.2 — Measurement frequencies . 40

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Foreword
This document (CLC/TS 50238-2:2015) has been prepared by CLC/SC 9XA "Communication, signalling and
processing systems" of Technical Committee CLC/TC 9X, "Electrical and electronic applications for
railways".
This document supersedes CLC/TS 50238-2:2010.

CLC/TS 50238-2:2010:
– The interference current limits for RST have been updated in the normative Annex A.
– The measurement and evaluation methods for verifying conformity of rolling stock to the limits for
interference current emissions have been moved to the new normative Annex B.
This Technical Specification is intended to become Part 2 of the EN 50238 series published under the title
Railway applications — Compatibility between rolling stock and train detection systems. The series consists
of:
1)
– Part 1: General :
– Part 2: Compatibility with track circuits [this document];
– Part 3: Compatibility with axle counters.
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.
__________
1) The existing EN 50238:2003 was renumbered EN 50238-1 when the voting procedure on Parts 2 and 3 was closed.

Introduction
This Technical Specification is being developed to permit compliance with the Interoperability Directives
(High Speed and Conventional).
This Part 2 of the series defines:
- a set of interference current limits for rolling stock based on defined track circuits,
- measurement and evaluation methods to verify rolling stock interference current emissions and
demonstrate compatibility with the track circuits;
- traceability of compatibility requirements (types of track circuit and associated limits).

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1 Scope
This Technical Specification defines, for the purpose of ensuring compatibility between rolling stock and
track circuits, the limits for interference current emissions from rolling stock. The measurement and
evaluation methods for verifying conformity of rolling stock to these limits are presented in a dedicated
annex.
The interference limits are only applicable to interoperable rolling stock which is intended to run on lines
exclusively equipped with preferred track circuits listed in this Technical Specification. National Notified
Technical Rules are still to be used in all cases, where the line over which the rolling stock is intended to run
is equipped with any type of older version or non-preferred track circuits that are not listed in this Technical
Specification. However, the rolling stock test methodology (infrastructure conditions, test configurations,
operational conditions, etc.) presented in this Technical Specification is also applicable to establish
compatibility with non-preferred track circuits.
This Technical Specification gives guidance on the derivation of interference current limits specified for
rolling stock and defines measurement methods and evaluation criteria in a dedicated annex.
This Technical Specification defines:
a) a set of interference current limits for RST (Rolling Stock) applicable for each of the following types of
traction system:
1) DC (750 V, 1,5 kV and 3 kV);
2) 16,7 Hz AC;
3) 50 Hz AC;
b) methodology for the demonstration of compatibility between rolling stock and track circuits;
c) measurement method to verify interference current limits and evaluation criteria.
NOTE 1 The basic parameters of track circuits associated with the interference current limits for RST are not in the scope of this
Technical Specification.
NOTE 2 Any phenomena linked to traction power supply and associated protection (over voltage, short-circuit current, under- and
over-voltage if regenerative brakes are used) is part of the track circuit design and outside the scope of this Technical Specification.
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 50126 (all parts), Railway applications — The specification and demonstration of Reliability, Availability,
Maintainability and Safety (RAMS)
EN 50128, Railway applications — Communication, signalling and processing systems — Software for
railway control and protection systems
EN 50129, Railway applications — Communication, signalling and processing systems — Safety related
electronic systems for signalling
EN 50238-1:2003, Railway applications — Compatibility between rolling stock and train detection systems —
Part 1: General
CLC/TS 50238-3:2013, Railway applications — Compatibility between rolling stock and train detection
systems — Part 3: Compatibility with axle counters
EN 50388, Railway Applications — Power supply and rolling stock — Technical criteria for the coordination
between power supply (substation) and rolling stock to achieve interoperability
CLC/TR 50507, Railway applications — Interference limits of existing track circuits used on European
railways
UIC 550, Power supply installations for passenger stock
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 50238-1:2003 and
CLC/TS 50238-3:2013 and the following apply.
3.1.1
coupled vehicles
part of the influencing unit which may be considered as an individual source of interference, different to the
Traction Subsystem
Note 1 to entry: See Figure 1 for examples.
Note 2 to entry: Since one influencing unit may consist of multiple sources of influence, it is normally ensured that the resulting
interference current emitted by the influencing unit into the power supply network does not exceed the interference current limits for RST
value.
3.1.2
influencing unit
rolling stock influencing the train detection system
Note 1 to entry: One influencing unit comprises all coupled/connected vehicles, e.g. complete train with single or multiple traction,
single vehicle, multiple connected/coupled vehicles and wagons, e.g. one complete passenger train, consisting of one or more TUs and
up to 16 coaches.
3.1.3
integration time
window size over which the output of the bandpass filter is calculated using RMS
3.1.4
interference source
equivalent to traction unit which is fed from its own power supply interface point (pantograph or shoe gear)
3.1.5
propulsion system
electrical/mechanical system that produces mechanical force to push the train forward
3.1.6
sources
interference sources which can generate harmonics independently
3.1.7
train detection system
system which comprises of equipment to detect the presence of a train
3.1.8
traction power unit
unit on the train housing, the converter/inverter equipment and its associated control to drive the propulsion
system
Note 1 to entry: It is also known as the motor car.
3.1.9
traction subsystem
subset of the Traction Unit which produces traction force or electric brake force
3.1.10
train under test
influencing unit used for the test measurements

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3.1.11
traction unit
subset of influencing unit, which comprises all Traction Subsystems including auxiliary supplies and other
power supplies, which can be collectively switched off by one collector/pantograph
Note 1 to entry: See CLC/TR 50507.
Note 2 to entry: The influencing unit may consist of several “traction units“ (TU). Each TU is fed from one pantograph. One TU may
be:
• one locomotive;
• one electric multiple unit, with one or several propulsion systems or traction power units (motor cars);
• one complete passenger train, consisting of individual passenger coaches.
Note 3 to entry: The number of TUs that form one IU depends on the type of rolling stock and its application. Therefore, the
definition of such numbers is out of the scope of this Technical Specification. The following figure shows some examples for various
types and compositions of traction units, forming one influencing unit in each case:
1 IU 1 TU 1 Locomotive + Freight train
1 IU 2 TU 2 Locomotives + Freight train
1 IU 2 TU 1 Locomotive + Passenger train
1 IU 1 TU 1 EMU
1 IU 2 TU 2 EMUs
1 IU 4 TU 4 Locomotives
1 EMU
1 IU 2 TU
Figure 1 — Examples of IUs
3.1.12
transmitter breakthrough
background interference which can be present at the track circuit receiver from rolling stock on adjacent
tracks or substation harmonics due to shared cross bonds and/or electrical imbalance of the track circuit
3.2 Abbreviations
For the purposes of this document, the abbreviations given in CLC/TS 50238-3:2013 and the following apply.
AC Alternating Current
A/D Analogue to Digital
DC Direct Current
EMU Electrical Multiple Unit
FFT Fast Fourier Transforms
FSK Frequency Shift Keying
HVI High Voltage Impulse
IU Influencing Unit
PC Personal Computer
PWM Pulse Width Modulation
RMS Root Mean Square
RSF Right Side Failure
RST Rolling stock
TC Track Circuit
TDS Train Detection System
TS Traction Subsystem
TU Traction Unit
WSF Wrong Side Failure
4 General aspects of interference current limits for RST
4.1 Derivation of interference current limits for RST
The interference limits are defined for a set of preferred types of existing track circuits which are also defined
2)
by Railway Infrastructure companies for use on future new signalling projects on interoperable lines . If it is
found that the line over which the rolling stock is intended to run is equipped with an older version or with
non-preferred track circuit then National Notified Technical Rules shall be used. It is not the intention of this
Technical Specification to mandate any particular type of train detection but it is expected that because the
list of preferred types and their limits for compatibility are drawn on the basis of established performance
criteria, the trend will be that upgraded interoperable lines are fitted with types which meet the compatibility
limits published in this Technical Specification. The complete set of compatibility requirements for existing
preferred and future types of track circuits to be installed on interoperable lines is outside the scope of this
Technical Specification.
In principle, the preferred types of track circuits from CLC/TR 50507 have been considered in defining the
interference current limits for RST. Where new upgrades of track circuits are available, their improved
susceptibility limits have been taken into account in this Technical Specification.
Annex A defines the interference current limits for compatibility with track circuits. The interference current
limits for RST are defined up to and including the highest frequency range occupied by existing track circuits.
The limits I are defined under worst case credible failure conditions of the track circuit such as unbalance or
broken bonds or rails as defined by national authorities.
The transfer function between the interference current limit I and the susceptibility of the track circuit can be
different for different infrastructure conditions. In the worst case, if the transfer function ratio is one, the total
interference current limit is defined by the susceptibility of the track circuit, taking into account any
contribution from the power supply.

2) The interference current limits and the measurement specification defined in this standard apply to rolling stock intended to run over
interoperable lines equipped with preferred types of track circuits as defined by national infrastructure authorities.

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4.2 Application of Interference current limits to RST design
The interference current limits for RST apply to one influencing unit.
By definition, the interference current limits for RST are based on the maximum steady state interference
signal to which the track circuit may be exposed.
The rolling stock interference current limits incorporate the established margins for the relevant track circuits
which take into account the interference current generated by other vehicles on adjacent or the same tracks.
Specific traction supply harmonics circulated through the impedance of the influencing unit are dealt with as
part of the evaluation methods presented in Annex B.
In the case of testing of single traction units on the operational railway the interference current limits for RST
will have to be applied to the influencing unit by using applicable summation rules, as explained in Annex B.
The interference current limits for RST are defined at absolute frequencies and therefore not dependent on
mains frequency variations. The measured RST interference current is dependant on the mains frequency
variations.
A vehicle is required to conform only to the interference current limits for RST for the traction system(s) (DC,
16,7 Hz, 50 Hz) on which it is intended to operate.
4.3 System definition
4.3.1 Structure
3)
The overall system to be considered is shown in Figure 2 . It consists of four main parts that are defined in
the following subclauses.
Example characterization of parts of the system based on a recent measurement campaign in different
railway networks can be found in Annex C.

3) If the configuration is applied to DC, normally DC transducers are placed in the ‘Hot path'.

Power supply system
Train
Hot path
I
Other
Train
under test
Other
traction
units
U
4qc
Z
Netw
Converter /
substation
I
Return
U
Source
U
Panto Measurement
equipment
Cold path
Hot path
Track circuit
U
Trc I
U Return
Trc
Z =
Int
I Correspondence
Return
Track circuit Evaluation
receiver method
S
Correspondence
Trc
G =
Int
S S
S
Eval Trc Eval
Key
Return current path between the traction unit and the energy source via rails
G Ratio of signal at the track circuit receiver and measured interference signal
In
Hot path Path between the energy source and the traction unit for drawing current
I Current measured in the pantograph of other trains
Other
IReturn Current measured in the pantograph of the train under test
S Interference signal processed using established evaluation criteria
Eval
S Actual interference signal at the track circuit receiver produced by the train under test while over the TC
Trc
U Voltage measured at the pantograph of the train
Panto
U
Source Voltage measured at the substation(s) or converter(s). Some railway systems have multiple side feeding
arrangements
U Voltage measured at the track circuit receiver while occupied by the train
Trc
U Voltage developed at the four quadrant converter of the train
4qc
Z Railway impedance as seen by the train; it defines the transfer function (coupling factor) between interference
Int
signal produced by RST and the track circuit
Z Railway line impedance as seen by the train
Netw
Figure 2 — System configuration considered for interference

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4.3.2 Train under test
In the context of this Technical Specification, the ‘train under test’ is the source of interference for which the
respective interference current limits apply. It can be a part of or the whole influencing unit. By operation of
its traction and auxiliary converters and other interaction it produces interference currents which are
conducted into the infrastructure.
A train may contain one or several traction units (not necessarily all of the same type) plus auxiliaries (in both
traction units and individual wagons).
The interface between train and infrastructure is at the point of drawing current (pantograph or shoe gear)
and wheel-rail. All requirements towards the train are formulated for this interface.
4.3.3 Power supply system
The power supply system comprises all live parts of the electrical system, such as power generators and
transmission lines or substations and catenary lines. Other trains interference can also be circulated via the
power supply and thus have an influence on the measured current values of the train under test. For
interference current evaluations this part is called the “hot path“.
4.3.4 Return current path (I )
return
In the evaluated system, the rails are an important part of the return current path. The same rails form part of
the track circuit train detection system known as track circuit and therefore it is important to maintain the
integrity of the track circuit to ensure it is not compromised by return currents.
For interference current evaluations this part is called the “cold path“.
The “transfer function“ is the relationship which links the return current of the train to the input voltage of the
track circuit receiver.
4.3.5 Track circuit receiver
The track circuit receiver detects whether a track is clear. For reliable and safe operation it shall not be
disturbed by interference currents which are injected into the system by trains and power supply.
The track circuit receiver reacts to the voltage between rails. The receiver itself can be characterized without
taking into account the power systems.
4.3.6 Measurement and evaluation method
The measurement and evaluation method is applied to the total line (or return) current of one influencing unit
and has to show whether the measured emissions generated by the train under test exceeds the respective
interference current limits for RST or not.
The method shall be chosen such that it reflects the behaviour of the track circuit.

Annex A
(normative)
Interference current limits for RST
A.1 Definitions
f [Hz] Centre filter frequency for evaluation
Δf [Hz] Frequency Shift of FSK
Δf [Hz] Tolerance of f
0 0
I RMS [A] Allowed RST interference current per influencing unit at f measured at the pantograph
0 0,
Δf [Hz] Difference between the upper and lower frequencies of 3 dB points of the filter curve
3dB
Δf [Hz] Difference between the upper and lower frequencies of 20 dB points of the filter curve
20dB
2*N [-] Filter order outside the 20 dB bandwidth: providing the attenuation factor N in 6 dB/oct. If
not provided, the closest standard order shall be chosen in the evaluation method to
match the 3 dB and 20 dB roll-out points.
T [s] Maximum time during which interference currents may exceed the defined limit, It is
defined by the reaction time of the track circuit receiver.
Ti [s] See definition of "integration time " in 3.1
Tp [s] Minimum time between two permitted exceedances of limit’s value

dB 20 log (factor), this means 20 dB is factor 10
Overlap [%] Parameter associated with the use of true RMS routines for evaluation of the output signal
from band pass filter. It defines the part of the data sample which is processed by
adjacent routines.
T [s] and Ti [s] may differ in some cases as defined in the tables below. If Ti [s] is not defined, the values are
identical.
The RST line current, analyzed by a filter as defined by f and Δf 20 dB points in the tables below, shall
remain below the indicated value I . This applies to all frequency ranges as defined by the tables. It is
considered that the 3 dB and 20 dB points (20 dB can be substituted by the filter order) are sufficient, in most
cases, to replicate the performance of the track circuit by the measurement specification.
If Δf is defined, two separate filters shall be defined per centre filter frequency, for evaluation of interference.
In case Δf is defined, this indicates the working range of the track circuit.
The RST line current which is measured is the total current that flows from the catenary via the
pantograph(s) through the train to the traction return circuit.
The measurement method defined in this Technical Specification is subject to further validation to confirm
that measurements taken with one RST in one country are reproducible in another country. This shall be
taken into account if compatibility with these limits is used for the purposes of cross-acceptance.
A.2 Preferred track circuits for DC traction
List of currently defined preferred track circuits that meet the requirements of 4.1:
- Italy – coded track circuit (BACC, CDB 83,3 Hz), ATIS (CBDAC), Digicode DTC24-2, CORTO
- Netherlands – Jade 1 & 2, FTGS 46, FTGS 917, HVI, GRS 75 Hz ATP coded TC
- UK – EBI Track 200 (TI21), EBI Track 400, HVI
- Czech Republic – EVKO 75 Hz, EVKO 275 Hz, KOA 75 Hz, KOA 275 Hz, ASE, ASAR, Specific types of
75 Hz and 275 Hz TCs with EFCP track circuit receiver

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- Belgium – Jade 1 & 2, HVI
- Germany - FTGS 46, FTGS 917, TCM100
- France – UM71 C*, UM71 CB*, UM71 CTVM*, HVI, UM 2000, UC 9500 (Universelle Court)
* Equipped with RENUM receptor.
- Poland – EOC-1, EOC-3,SOT-1, SOT-2, EON-1, EON-3, EON-6
- Spain – FS3000, FS2000/2500/2550/5000
A.3 Preferred track circuits for RST for 16,7 Hz traction
List of currently defined preferred track circuits that meet the requirements of 4.1:
- Austria – S50108914 106,7 Hz; S1722-8 100 Hz
- Germany – FTGS 46, FTGS 917, TCM100
- Netherlands – FTGS 46, FTGS 917, HVI
- Norway – FTGS 46, FTGS 917, TI21, 95 Hz, 105 Hz
- Sweden – JRK10470
- Switzerland – UGSK 95, UGSK 3, FTGS 46, FTGS 917
It should be noted that the only even harmonic presently used for track circuits operation is the sixth
harmonic of 16,7 Hz for 100 Hz track circuits.
NOTE The audio frequency track circuit types used in Austria, Germany and Switzerland are mainly of the same technology as in the
rest of interoperable Europe using 50 Hz traction and similar limits apply at operational frequencies of track circuits.
The limits for interoperable track circuits for 16,7 Hz traction are defined in Annex A.
A.4 Preferred track circuits for RST for 50 Hz traction
List of currently defined preferred track circuits that meet the requirements of 4.1:
- Belgium – Jade 2, HVI
- Czech Republic – EVKO 75 Hz, EVKO 275 Hz, KOA 75 Hz, KOA 275 Hz, ASE, ASAR, Specific types of
75 Hz and 275 Hz TCs with EFCP track circuit receiver
- Denmark – DC TC, 77 Hz, FTGS 46, FTGS 917
- France – UM71 C*, UM71 CB*, UM71 CTVM*, UM 2000, HVI, UC 9500 (Universelle Court)
* Equipped with RENUM receptor.
- Italy – coded track circuit (CDB 83,3 Hz). ATIS (CBDAC), Digicode DTC24-2, CORTO
- Poland – SOT-1, SOT-2, EON-1, EON-3, EON-6
- Netherlands – Jade 1-28, Jade 1-31, Jade 1-49, Jade 1-67, Jade 2, HVI
- UK – EBI Track 200 (TI21), EBI Track 400, DC AC immune various, HVI

- Spain – FS3000, FS2000/2500/2550/5000
NOTE There are no limits defined in this annex for HVI track circuits. National rules apply if defined.
A.5 UGSK3
Table A.1 — UGSK3
Type f I ∆f ∆f 2*N Ti Tp Remark
0 0 3dB 20dB
[Hz] RMS [–] [s] [s]
[Hz] [Hz]
[A]
UGSK 3 208,75 4 6,5 14 6 0,5
UGSK 3 222,45 4 6,5 14 6 0,5
UGSK 3 242,15 4 6,5 14 6 0,5
A.6 UGSK95
Table A.2 — UGSK95
Type f I 2*N Ti Tp Remark
0 0 ∆f ∆f
3dB 20dB
[Hz] RMS [–] [s] [s]
[Hz] [Hz]
[A]
UGSK 95 134 4 19 39 6 0,5 f = 137 Hz
Op
UGSK 95 169,5 4 19 39 6 0,5 f = 175 Hz
Op
UGSK 95 230 4 19 39 6 0,5 f = 225 Hz
Op
Values in column f correspond to the centre frequency of required bandpass filters. Operating frequencies
f mentioned under remarks are slightly different; they are not relevant for compatibility check between
0p
rolling stock and UGSK 95 track circuits.
A.7 FTGS 46 / FTGS 917/TCM100
Table A.3 — FTGS/TCM100
Type f0 I0 ∆f ∆f 2*N T Tp Remark
3dB 20dB
[Hz] RMS [–] [s] [s]
[Hz] [Hz]
[A]
FTGS 46 4 750 1 200 560 0,04 0,12
FTGS 46 5 250 1 206 570 0,04 0,12
FTGS 46 5 750 1 214 580 0,04 0,12
FTGS 46 6 250 1 220 590 0,04 0,12
FTGS 917 9 500 0,33 360 900 0,04 0,12
FTGS 917 10 500 0,33 380 920 0,04 0,12
FTGS 917 11 500 0,33 400 950 0,04 0,12
FTGS 917 12 500 0,33 425 1 015 0,04 0,12
FTGS 917 13 500 0,33 445 1 100 0,04 0,12
FTGS 917 14 500 0,33 470 1 160 0,04 0,12
FTGS 917 15 500 0,33 490 1 195 0,04 0,12
FTGS 917 16 500 0,33 510 1 230 0,04 0,12

- 17 - CLC/TS 50238-2:2015
A.8 GRS
GRS is an ATP coded track circuit.
Measurements shall not be performed on lines which can be influenced by 25 kV 50 Hz interference
currents.
Table A.4 — GRS
System / Type f I Δf Δf 2*N [-] T Tp Remark
0 0 3dB 20dB
[Hz] RMS [Hz] [Hz] [s] [s]
[A]
GRS (ATBEG) 75 0,5 20 40 6 0,2 1,7

In the case of DC-traction we have to consider harmonic frequencies as a result of the rectifying process.
Generally th
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