SIST EN 50546:2024

Railway applications - Rolling Stock - Three-phase shore (external) supply system for rail vehicles and its connectors

The shore supply system is used while the rolling stock is standing still within depots and sidings location for providing power to the AC auxiliary loads (which can include battery charging) when the primary power supply (contact line) is not available or used.
This document:
-   specifies requirements to the shore supply and to the rolling stock for safe operation on shore supply operation;
-   specifies the requirements to ensure compatibility of class C0 and C1 train types as given in CLC/TS 50534:2010 systems and three-phase shore power supply systems;
-   provides a complete system design for 63/125 A shore supplies including the interfaces (power and control loop) between shore supply and rolling stock;
-   specifies the requirements with regards to interoperability with AC and DC fed traction systems in order to prevent undesired stray currents and adverse interaction with signalling systems when operating on shore supply;
-   defines the electrical characteristics of the 63/125 A shore power supply;
-   defines the 63/125 A connectors and its intermateability to provide interoperability for rolling stock that is to run across borders;
-   defines the 600 A connector and its intermateability;
-   can be used for other type of rail vehicles and purposes, if agreed by the manufacturer and customer
-   does not apply to shore supplies to move the rolling stock;
-   does not describe the 600 A shore supply system.
NOTE 1   The 600 A connector is the existing UK standard three-phase shore supply connector which has a long service history.
NOTE 2   The connectors are dimensioned using standard rolling stock cables as set out in EN 50264-3-1:2008.
NOTE 3   Examples of other usage and rail vehicles are: e.g. light rail vehicles, class A train types, traction battery charging etcetera.

Bahnanwendungen - Fahrzeuge - Dreiphasiges Fremdeinspeisungssystem für Schienenfahrzeuge und zugehörige Steckverbinder

Applications ferroviaires - Matériel roulant - Système d'alimentation à quai (externe) triphasée des véhicules ferroviaires par connecteurs

Le système d'alimentation à quai est utilisé lorsque le matériel roulant est à l'arrêt dans les dépôts et sur les voies de service, pour fournir de l'énergie aux charges auxiliaires en CA (lesquelles peuvent inclure des dispositifs de charge de batterie) lorsque l'alimentation électrique principale (ligne de contact) n'est pas disponible ou est déjà utilisée.
Le présent document :
-   spécifie les exigences relatives à l'alimentation à quai et au matériel roulant afin de garantir la sécurité de marche lorsque l'alimentation se fait côté quai ;
-   spécifie les exigences visant à garantir la compatibilité des types de trains de classes C0 et C1 conformément à la CLC/TS 50534:2010 ainsi que des systèmes d'alimentation électrique à quai triphasée ;
-   suggère une conception complète du système d'alimentation à quai 63/125 A, comprenant les interfaces (alimentation et boucle de commande) entre l'alimentation à quai et le matériel roulant ;
-   spécifie les exigences d'interopérabilité avec les systèmes de traction alimentés en courant alternatif et en courant continu afin de prévenir les courants vagabonds indésirables et les interactions néfastes avec les systèmes de signalisation lorsque l'alimentation se fait côté quai ;
-   définit les caractéristiques électriques de l'alimentation électrique à quai 63/125 A ;
-   définit les connecteurs 63/125 A et leurs modalités d’accouplement afin de garantir l'interopérabilité d'un matériel roulant destiné à traverser les frontières ;
-   définit le connecteur 600 A et ses modalités d’accouplement ;
-   peut être utilisé pour d'autres types de véhicules ferroviaires et à d'autres fins, si ce point fait l'objet d'un accord entre le fabricant et le client ;
-   ne s'applique pas aux systèmes d'alimentation à quai destinés au déplacement du matériel roulant ;
-   ne décrit pas le système d'alimentation à quai 600 A.
NOTE 1   Le connecteur 600 A est le connecteur d'alimentation à quai triphasée couramment utilisé au Royaume-Uni, où il est en usage depuis longtemps.
NOTE 2   Les connecteurs sont dimensionnés à partir des câbles pour matériel roulant normalisés dans l'EN 50264 3 1:2008.
NOTE 3   Les véhicules légers sur rail, les types de trains de classe A, la charge des batteries de traction sont des exemples d'autres véhicules ferroviaires et d'autres usages.

Železniške naprave - Vozna sredstva - Trifazni (zunanji) napajalni sistem in konektorji za železniška vozila

Ta dokument določa zahteve za napajalni sistem za pomožne naprave in predkondicioniranje ter povezane medsebojno združljive pare konektorjev. Ta standard določa značilnosti konektorjev za doseganje interoperabilnosti pri vmesniku med voznim sredstvom in napajalnim sistemom.
Dokument se ne uporablja za napajalnike za premikanje voznega sredstva.

General Information

• Status: Published
• Public Enquiry End Date: 14-Sep-2023
• Publication Date: 12-Nov-2024
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• 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: 05-Nov-2024
• Due Date: 10-Jan-2025
• Completion Date: 13-Nov-2024
• Directive: 2016/797/EU - Directive (EU) 2016/797 of the European Parliament and of the Council of 11 May 2016 on the interoperability of the rail system within the European Union (Text with EEA relevance)
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Mandate: M/591 - Standardisation request to the European Committee for Standardisation and the European Committee for Electrotechnical Standardisation as regards railway products in support of Directive (EU) 2016/797
• Ref Project: EN 50546:2024 - Railway applications - Rolling Stock - Three-phase shore (external) supply system for rail vehicles and its connectors

Relations

• Revises: SIST EN 50546:2020 - Railway applications - Rolling Stock - Three phase shore (external) supply system for rail vehicles and its connectors
• Effective Date: 01-Dec-2024
• Revises: SIST EN 50546:2020/AC:2021 - Railway applications - Rolling Stock - Three-phase shore (external) supply system for rail vehicles and its connectors
• Effective Date: 01-Dec-2024

Overview

EN 50546:2024 (CLC) specifies a standardized three‑phase shore (external) supply system and associated connectors for rail vehicles. It covers the design, electrical characteristics and interoperability rules for shore power used when rolling stock is stationary in depots and sidings - supplying AC auxiliary loads (including battery charging) when the contact line is not available. The edition updates and supersedes EN 50546:2020 and defines complete system requirements for 63/125 A shore supplies and connector requirements (including intermateability) for 600 A connectors.

Key Topics and Requirements

• System design: Complete design and interfaces (power and control loop) for 63/125 A shore power installations; connection diagrams and requirements for safe operation.
• Electrical characteristics: Defines the voltage and performance requirements specific to the 63/125 A shore power supply.
• Connector specifications: Mechanical and electrical design, marking, IP protection, dielectric strength, temperature classes, temperature rise, corrosion resistance, mechanical durability and locking. Annex A details 63/125 A connector designs; Annex B covers 600 A connector design.
• Safety & protection: Protective devices, galvanic isolation, protection against electric shock, overload/short‑circuit considerations and earthing continuity requirements.
• Control & monitoring: Requirements for control and monitoring circuitry to ensure safe make/break operations and communication between shore supply and rolling stock.
• Interoperability & stray current mitigation: Requirements to ensure compatibility with class C0/C1 train types (CLC/TS 50534:2010), and to prevent undesired stray currents or adverse interaction with signalling systems on both AC and DC traction networks.
• Testing: Comprehensive test schedule for materials, electrical performance, mechanical operation, contact resistance, vibration/shock, temperature and environmental resistance.
• Scope limits: Applies to stationary shore supply only (not for moving the rolling stock) and does not describe the 600 A shore supply system itself - only the connector.

Applications and Users

• Rolling stock manufacturers and designers specifying on‑board shore power interfaces
• Infrastructure owners and depot designers implementing shore power installations
• Connector and cable suppliers engineering interoperable solutions (63/125 A and 600 A)
• Operators, safety engineers and system integrators concerned with battery charging and auxiliary power while vehicles are stabled
• Regulators and standardization bodies ensuring cross‑border compatibility and signalling safety

Related Standards

• CLC/TS 50534:2010 (class C0/C1 train type definitions and compatibility)
• EN 50264-3-1:2008 (standard rolling stock cable dimensions used for connector sizing)
• Supersedes EN 50546:2020

Keywords: shore supply, three‑phase shore power, rolling stock, 63/125 A, 600 A connector, connector intermateability, interoperability, stray currents, depot shore power.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2024
Železniške naprave - Vozna sredstva - Trifazni (zunanji) napajalni sistem in
konektorji za železniška vozila
Railway applications - Rolling Stock - Three-phase shore (external) supply system for rail
vehicles and its connectors
Bahnanwendungen - Fahrzeuge - Dreiphasiges Fremdeinspeisungssystem für
Schienenfahrzeuge und zugehörige Steckverbinder
Applications ferroviaires - Matériel roulant - Système d'alimentation à quai (externe)
triphasée des véhicules ferroviaires par connecteurs
Ta slovenski standard je istoveten z: EN 50546:2024
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
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 50546
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2024
ICS 29.120.30; 45.060.01 Supersedes EN 50546:2020; EN 50546:2020/AC:2021-09
English Version
Railway applications - Rolling Stock - Three-phase shore
(external) supply system for rail vehicles and its connectors
Applications ferroviaires - Matériel roulant - Système Bahnanwendungen - Fahrzeuge - Dreiphasiges
d'alimentation à quai (externe) triphasée des véhicules Fremdeinspeisungssystem für Schienenfahrzeuge und
ferroviaires par connecteurs zugehörige Steckverbinder
This European Standard was approved by CENELEC on 2024-07-29. 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, 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.

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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50546:2024 E
Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 13
4 System overview . 13
4.1 Introduction . 13
4.2 Protective devices . 15
4.3 Control and monitoring circuitry . 16
4.4 Connection diagrams 63/125 A . 17
4.5 Connection diagrams 600 A . 19
5 General requirements . 20
5.1 Alternative implementations. 20
5.2 Shore supply system power ratings . 21
5.3 Interaction between rolling stock and shore supply . 21
5.4 Electrical safety . 24
5.5 Requirements for the shore supply transformer . 27
5.6 Galvanic isolation . 28
5.7 Electrical characteristics of the shore supply voltage . 28
5.8 Infrastructure of the shore supply . 29
6 Connector requirements . 30
6.1 General . 30
6.2 Marking and identification . 35
6.3 Scoop proof . 35
6.4 Connector IP requirements . 35
6.5 Terminations and connection methods . 36
6.6 Resistance to ageing . 36
6.7 Mechanical lock . 36
6.8 Dielectric strength . 36
6.9 Mechanical and electrical durability . 37
6.10 Harness or assembly strain relief . 37
6.11 Mechanical strength . 37
6.12 Vibration and shock . 37
6.13 Insulation coordination . 37
6.14 Temperature classes . 37
6.15 Temperature rise . 38
6.16 Protection against corrosion . 38
6.17 Fire behaviour of materials and components . 38
6.18 Resistance to chemically active substances and to contaminating fluids . 38
6.19 Resistance to ozone . 38
6.20 Resistance to UV radiation . 38
6.21 Connector material . 38
6.22 Protective cover . 38
7 Tests . 39
7.1 Introduction . 39
7.2 Test schedule . 40
7.3 Tests on raw materials . 44
7.4 Protection against electric shock . 44
7.5 Temperature rise . 44
7.6 Mechanical operation . 44
7.7 Measurement of contact resistance of wired contact pair . 44
7.8 Drop test for free connector . 45
7.9 Measurement of clearances and creepage . 45
7.10 Dielectric strength . 45
7.11 Resistance between earthing conductor of the free connector and the shell of the fixed
connector . 45
7.12 Corrosion test . 45
7.13 Contact retention . 46
Annex A (normative) 63/125 A Connector design . 47
A.1 Fixed connector male. 47
A.2 Fixed connector female . 54
A.3 Free connector female . 59
A.4 Free connector male . 62
A.5 Mated connectors and earthing continuity . 65
Annex B (normative) 600 A connector design. 67
B.1 Fixed connector female . 67
B.2 Free Connector Male . 73
Annex C (informative) Explanation about some protection features . 79
C.1 General overview . 79
C.2 Overload and short circuit protection . 80
C.3 Protection against direct contact on shore supply side . 80
C.4 Why a single secondary winding per shore supply connector? . 81
C.5 Selectivity with individual socket protection on Rolling Stock . 82
C.6 Inrush and leakage current . 83
Bibliography . 85
European foreword
This document (EN 50546:2024) has been prepared by CLC/SC 9XB, “Electrical, electronic and
electromechanical material on board rolling stock, including associated software”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2025-07-29
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2027-07-29
conflicting with this document have to be
withdrawn
This document supersedes EN 50546:2020 and all of its amendments and corrigenda (if any).
a) Revision of Clause 1, Scope;
b) Revision of Clause 2, Normative references;
c) Revision of Clause 3, Terms and definitions, with reorganization of definitions;
d) Introduction of new Clause 4, System overview;
e) Introduction of new Clause 5 (revision and completion of previous Clause 4), General requirements;
f) The previous Clause 5 contents where redistributed among other clauses;
g) Updates of Clause 6, Connector requirements;
h) Updates of Clause 7, Tests;
i) Updates of the following mandatory Annexes:
1) Annex A, Connector design 63/125 A;
2) Annex B, Connector design 600 A;
j) New Annex C (Informative), Explanations about some protection features;
k)  Bibliography, revised and corrected.
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 standardization request addressed to CENELEC by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
This standardization project was derived from the EU-funded Research project MODTRAIN (MODPOWER). It
is part of a series of standards, referring to each other. The hierarchy of the standards is intended to be as set
out in Figure 1:
Figure 1 — Overview on the technical framework CLC/TS 50534:2010 defines the basis for other
dependent standards
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Introduction
This document is part of the technical framework as given in Figure 1 and describes a 63/125 A shore supply
system, the safety devices and provides requirements for the connectors. For a 600 A shore supply, this
document describes the connector requirements.
The workgroup did take notice from the many technical comments on the final version of the first edition and
tried, as best as we could, to address these comments.
While drafting this edition of the document, input was received from various rolling stock manufacturers, infra
structure experts, safety experts and operators.
1 Scope
The shore supply system is used while the rolling stock is standing still within depots and sidings location for
providing power to the AC auxiliary loads (which can include battery charging) when the primary power supply
(contact line) is not available or used.
This document:
— specifies requirements to the shore supply and to the rolling stock for safe operation on shore supply
operation;
— specifies the requirements to ensure compatibility of class C0 and C1 train types as given in
CLC/TS 50534:2010 systems and three-phase shore power supply systems;
— provides a complete system design for 63/125 A shore supplies including the interfaces (power and
control loop) between shore supply and rolling stock;
— specifies the requirements with regards to interoperability with AC and DC fed traction systems in order to
prevent undesired stray currents and adverse interaction with signalling systems when operating on shore
supply;
— defines the electrical characteristics of the 63/125 A shore power supply;
— defines the 63/125 A connectors and its intermateability to provide interoperability for rolling stock that is
to run across borders;
— defines the 600 A connector and its intermateability;
— can be used for other type of rail vehicles and purposes, if agreed by the manufacturer and customer
— does not apply to shore supplies to move the rolling stock;
— does not describe the 600 A shore supply system.
NOTE 1 The 600 A connector is the existing UK standard three-phase shore supply connector which has a long
service history.
NOTE 2 The connectors are dimensioned using standard rolling stock cables as set out in EN 50264-3-1:2008.
NOTE 3 Examples of other usage and rail vehicles are: e.g. light rail vehicles, class A train types, traction battery
charging etcetera.
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 45545-2:2020+A1:2023, Railway applications - Fire protection on railway vehicles - Part 2: Requirements
for fire behaviour of materials and components
EN 50124-1:2017, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances
and creepage distances for all electrical and electronic equipment
EN 50125-1:2014, Railway applications - Environmental conditions for equipment - Part 1: Rolling stock and
on-board equipment
EN 50153:2014, Railway applications - Rolling stock - Protective provisions relating to electrical hazards
EN 50264-3-1:2008, Railway applications - Railway rolling stock power and control cables having special fire
performance - Part 3-1: Cables with crosslinked elastomeric insulation with reduced dimensions - Single core
cables
EN 50264-3-2:2008, Railway applications - Railway rolling stock power and control cables having special fire
performance - Part 3-2: Cables with crosslinked elastomeric insulation with reduced dimensions - Multicore
cables
EN 50467:2011, Railway applications - Rolling stock - Electrical connectors, requirements and test methods
EN 50533:2011, Railway applications – Three-phase train line voltage characteristics
EN 60512-1-4:1997, Electromechanical components for electronic equipment - Basic testing procedures and
measuring methods - Part 1: General - Section 4: Test 1d: Contact protection effectiveness (scoop-proof)
(IEC 60512-1-4:1997 + COR1:2000)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989 + A1:1999 and
A2:2013)
EN 61373:2010, Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373:2010)
EN ISO 4892-2:2013, Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps
(ISO 4892-2:2013)
ISO 1431-1:2022, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and
dynamic strain testing
CLC/TS 50535:2010, Railway applications - Onboard auxiliary power converter systems
EN 60947-5-1:2017, Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices (IEC 60947-5-1:2016
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:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1.1 System
3.1.1.1
shore supply system
system consisting of on-ground equipment and on-board equipment connected to each other

As impacted by EN 50153:2014/A1:2017 and EN 50153:2014/A2:2020.
As impacted by EN 50533:2011/A1:2016.
As impacted by EN 60529:1991/A1:2000, EN 60529:1991/A2:2013 and EN 60529:1991/AC:2016-12.
3.1.1.2
three-phase shore power supply
three-phase AC voltage system involving three or four wire (including neutral wire) distribution
[SOURCE: CLC/TS 50534:2010, 3.1.18, modified – replaced “3AC voltage system” with “three-phase shore
power supply”]
3.1.1.3
3AC train line
three-phase AC voltage systems involving three or four wire (including neutral wire) distribution
[SOURCE: CLC/TS 50534:2010, 3.1.18, modified – replaced “3AC voltage system” with “3AC train line”]
3.1.1.4
shore supply connection system
system consisting of the fixed connector(s), the free connector(s) and the associated cables
3.1.1.5
shore supply cable
cable with connector(s) connecting the three-phase shore power supply to the rolling stock
Note 1 to entry: The shore supply cable provides connectivity for all contact pins in the connector(s).
3.1.2 Connection
3.1.2.1
connector
device providing connection and disconnection to a suitable mating component
Note 1 to entry: A connector has one or more contact elements
Note 2 to entry: Connectors covered by this document are not intended to be connected and disconnected under
electrical load.
[SOURCE: IEC 60050-581:2008,581-26-01 – Note 2 to entry has been added]
3.1.2.2
intermateable
pertaining to each of two components when they feature identical dimensions for electrical and dimensional
interfaces
[SOURCE: IEC 60050-581:2008, 581-24-07]
3.1.2.3
mating cycle
cycle of operation of a connector
one connection and one disconnection of the connector mating halves
[SOURCE: IEC 60050-581:2008, 581-21-06, modified – The preferred term “cycle of (connector) operation”
has been replaced by “mating cycle” and the admitted term “cycle of operation of a connector” has been
added. The word ‘insertion’ has been replaced with ‘connection’ and the word ‘withdrawal’ has been replaced
by ‘disconnection’. The word “mating” has been added to “halves” for clarity.]
3.1.2.4
free connector
connector for attachment to a free end of a cable
Note 1 to entry: Is a mobile connector, with male or female contacts, to be coupled to a fixed connector.
[SOURCE: IEC 60050-581:2008, 581-26-10, modified – ‘of a cable’ and Note 1 to entry added for clarity]
3.1.2.5
fixed connector
connector for attachment to a rigid surface
Note 1 to entry: Is a connector, with male or female contacts, to be mounted on rigid surface.
[SOURCE: IEC 60050-581:2008, 581-26-07, Note 1 to entry added for clarity]
3.1.2.6
shore supply connector
connector dedicated to the shore supply system
3.1.2.7
contact
conductive element in a connector (including means for a cable termination) that mates with
a corresponding element to provide an electric path
[SOURCE: EN 50467:2011, 3.8]
3.1.2.8
crimped connection
permanent connection made by the application of pressure inducing the deformation or reshaping of the barrel
around the conductor of a cable
Note 1 to entry: In some cases, the deformation or reshaping of the barrel can affect the form of the conductor.
[SOURCE: IEC 60050-461:2008, 461-19-01]
3.1.2.9
male contact
pin contact
contact element intended to make electric engagement on its outer surface for mating with the inner surface of
another contact element
[SOURCE: IEC 60050-581:2008, 581-22-08, modified – The preferred term “pin contact” and the admitted
term “male contact” have been inverted.]
3.1.2.10
female contact
socket contact
contact element intended to make electric engagement on its inner surface for mating with the outer surface of
another contact element
Note 1 to entry: In English, the term “socket contact” does not imply that socket contacts are always mounted in a socket
(IEC 60050-151:2001, 151-12-20) nor that sockets have only socket contacts.
[SOURCE: IEC 60050-581:2008, 581-22-06, modified – The preferred term “socket contact” and the admitted
term “female contact” have been inverted. “IEC 60050-151:2001” has been added in Note 1 to entry]
3.1.2.11
pilot contact
auxiliary electric contact for use in a control, signalling, monitoring or interlock circuit
[SOURCE: EN-IEC 60309-1:2022, 3.25 modified – replaced the word ”function” with “circuit” ]
3.1.2.12
interlock circuit
circuit linking mechanical, electric or other devices, for example through auxiliary contacts, intended to make
the operation of a piece of apparatus dependent on the condition or position of one or more others
[SOURCE: IEC 60050-811:2017, 811-25-13]
3.1.2.13
coding contact
control contact for the system to know which current is available from the three-phase
shore power supply
3.1.2.14
last make first break
contact that is the last to make a connection when the free connector is connected into the fixed connector
and the first to break the connection when the free connector is disconnected from the fixed connector
3.1.3 Electrical
3.1.3.1
rated voltage
value of voltage assigned to the connector and to which operation and performance
characteristics are referred
3.1.3.2
rated impulse voltage
impulse voltage value assigned to the connector, characterizing the specified withstand
capability of its insulation against transient overvoltages
[SOURCE: IEC 60050-581:2008, 581-21-18, modified – Specific use has been added. In the definition
“impulse’ has been added. “by the manufacturer” has been deleted.]
3.1.3.3
rated current
value of the electric current in a connector used for specification purposes, established for the
operating condition in which the electric current is present continuously
[SOURCE: IEC 60050-581:2008, 581-21-05, modified – The specific use has been added. The second part of
the definition “and simultaneously in all contacts of the connector being wired with the largest specified
conductor, while the ambient temperature near the connector is maintained at 40 °C” has been removed. The
Note to entry has been omitted.]
3.1.3.4
Safety Extra-Low Voltage
SELV
AC voltage the RMS value of which does not exceed 50 V or ripple-free DC voltage the value of which does
not exceed 120 V, between conductors, or between any conductor and reference earth, in an electric circuit
which has galvanic separation from the supplying electric power system by such means as a separate-winding
transformer
Note 1 to entry: Maximum voltage lower than 50 V AC or 120 V ripple-free DC can be specified in particular requirements,
especially when direct contact with live parts is allowed.
Note 2 to entry: The voltage limit should not be exceeded at any load between full load and no-load when the source is a
safety isolating transformer.
Note 3 to entry: Ripple-free qualifies conventionally an RMS ripple voltage not more than 10 % of the DC component; the
maximum peak value does not exceed 140 V for a nominal 120 V ripple-free DC system and 70 V for a nominal 60 V
ripple-free DC system.
Note 4 to entry: The values given are according to EN 50153:2014, Table 1 Band II.
[SOURCE: IEC 60050-851:2008, 851-15-08]
3.1.3.5
SELV system
electric system in which the voltage cannot exceed the value of extra-low voltage:
— under normal conditions and
— under single fault conditions, including earth faults in other electric circuits
Note 1 to entry: SELV is the abbreviation for Safety Extra-Low Voltage.
[SOURCE: IEC 60050-195:2021, 195-06-28]
3.1.3.6
phase sequence
order in which the voltages successively reach their maximum positive values between supply conductors
[SOURCE: IEC 60034-8:2007, 3.13]
3.1.3.7
clearance
shortest distance in air between two conductive parts
[SOURCE: IEC 60050-581:2008, 581-27-76]
3.1.3.8
creepage distance
shortest distance along the surface of a solid insulating material between two conductive parts
[SOURCE: IEC 60050-581:2008, 581-21-23]
3.1.3.9
direct contact
electric contact of human beings or livestock with live parts
[SOURCE: IEC 60050-195:2021, 195-06-03]
3.1.3.10
indirect contact
electric contact of human beings or livestock with exposed-conductive-parts that have become live under fault
conditions
[SOURCE: IEC 60050-195:2021, 195-06-04]
3.1.3.11
exposed-conductive-part
conductive part of equipment that can be touched and that is not live under normal conditions, but that can
become live when basic insulation fails
[SOURCE: IEC 60050-195:2021, 195-06-10]
3.1.3.12
protective-equipotential-bonding
equipotential bonding for the purposes of electrical safety
[SOURCE: IEC 60050-195:2021, 195-01-15]
3.1.3.13
main equipotential busbar
MEB
busbar where the equipotential conductors terminate
[SOURCE: EN 50122-1:2022, 3.2.7]
3.2 Abbreviations
AC alternating current
BAT battery
CP coding pin
DC direct current
EFMD earth fault monitoring device
EMI electro magnetic interference
FBS flat battery start
IT isolation terra
MCB miniature circuit breaker
MEB main equipotential busbar
NA not applicable
PE protective-equipotential-bonding
PP pilot pin
RCBO residual current breaker with overload protection
RCD residual current device
SELV Safety Extra-Low Voltage
TCMS train control and monitoring system
TDR total distortion ratio
TN terra neutral
UV ultra violet
VLD voltage limiting device
4 System overview
4.1 Introduction
4.1.1 General
This clause describes the complete 63/125 A shore supply system. The functions of different parts are
explained briefly in this clause. Specific details are described in later (sub)clauses. Functional examples and
further information regarding faults, inrush and personal safety are given in Annex C.
The overall system diagram is given in Figure 2.
Figure 2 — System overview
4.1.2 Three phase shore power supply
A three-phase shore power supply (with neutral), galvanically isolated to avoid ground loop between shore
side and rolling stock, is provided by the shore supply cable to feed the rolling stock.
The system provides a safe way to connect, energize and de-energize the shore supply.
Protection is provided against:
— short circuit and overload;
— indirect contact with an exposed-conductive- part;
— direct contact with an energized defective cable on the shore supply side.
The three-phase shore power supply is compatible with both a TN or a IT rolling stock 3AC train line system.
The system can optionally be expanded with a flat battery starting functionality, using the three-phase shore
power supply to energize Q20 and / or to provide power for limited TCMS functionality to ensure system start-
up.
For alternative implementation requirements refer to 5.1.
NOTE In the infrastructure world a three-phase system is often annotated as “three-phase”, in the rolling stock world
it is often annotated as 3AC. In this document 3AC or 3AC+N is used and annotates to the appropriate world.
4.1.3 Safety Extra-Low Voltage (SELV) DC shore power supply
A SELV DC supply, galvanically isolated to avoid ground loop between shore side and rolling stock, is
provided to feed the control and safety circuit.
The rolling stock can detect whether a connecting cable is connected to the shore supply and the available
current rating (63/125 A system only).
The shore supply will be de-energized if any of the protection devices in the shore supply (i.e. F10) or in the
rolling stock (i.e. F20, F21, F23) is triggered.
The rolling stock can detect an inhibit traction indication using a combination of pilot and coding contacts –
even if the shore supply is not yet energized (63/125 A system). An Inhibit traction indication may be used to
activate brakes and/or prevent an electrical contact with the main power supply (e.g. contact line, ground level
conductor rail).
4.2 Protective devices
4.2.1 General
Due to the interoperability requirements of the system in all European countries for border crossing, different
manufacturers of rolling stock, different traction power supply systems and signalling systems, protective
devices are placed both on the shore side and on the rolling stock side.
4.2.2 Shore side protective devices
Devices on the shore side provide the following functions:
— overload protection, F10 (mandatory);
— short circuit protection, F10 (mandatory);
— isolation contactor, Q10 (mandatory).
4.2.3 Rolling stock protective devices
Devices on the rolling stock side, between the shore supply connector and the 3AC train line, provide the
following functions:
— residual current protection, F20 (mandatory);
— overload protection, F21 (see 5.4.5.3);
— short circuit protection, F21 (see 5.4.5.3);
— phase sequence protection, F22 (mandatory);
— missing phase protection, F22 (mandatory);
— voltage monitoring, F22 (mandatory);
— isolation contactor, Q20 (mandatory);
— earth fault monitoring device, F23 (optional, for IT systems only).
4.2.4 Rail bonding options and PE
4.2.4.1 Shore side
Depending on the traction supply system used and in accordance with EN 50122-1:2022 the main
equipotential busbar (MEB) of the shore supply can be bonded to the rail.
4.2.4.2 Rolling stock side
Depending on the design of the rolling stock grid system, the protective earth (PE) can either be a dedicated
conductor or a conductive car body frame. The bonding between neutral and the PE can be:
— open (IT system);
— impedance grounded (IT system);
— fixed connection (TN system);
— switched (TN / IT system).
NOTE In practical conditions, “open” or “open switch” IT systems are actually “high impedance” IT systems. The total
earthing impedance can be constituted by one or more elements (e.g. EMI filters) along the 3AC train line.
4.3 Control and monitoring circuitry
4.3.1 Sequence of operation
4.3.1.1 Preparation
The rolling stock is prepared to be connected to the shore supply and parked in accordance with local
procedures.
— the rolling stock will be disconnected from the main supply by the operational staff before connecting to
the shore supply
— the main supply is disconnected when the shore supply cable is connected to the rolling stock
4.3.1.2 Connecting to shore supply
To prevent the possibility for the rolling stock to drive away with an attached cable (see traction inhibit 5.3.6),
the shore supply side of the shore supply cable should be connected first to the shore supply fixed connector.
NOTE Alternatively, a fixed connection to the shore supply side of the shore supply cable can be considered.
Operational staff will attach the shore supply cable with the train shore supply fixed connector.
The SELV of the shore supply informs the rolling stock of:
— the connected status
— the shore supply current rating 63/125 A.
The rolling stock TCMS:
— inhibits traction, K22;
— disconnects from the main supply (if not previously done);
— prepares the control sequence for load limitation if the shore supply current rating is less than the rolling
stock current rating.
If the Rolling Stock is ready to be supplied by the shore supply, including the RCD (F20), the overload
protection (F21) and the MCB (F10) contacts are in the closed position, the control loop is closed and the
“Control loop OK” (P11) lamp lights up.
4.3.1.3 Energized state
The shore supply ON-button (S10) is pressed. The isolation contactor (Q10) is closed. If the MCB (F10) is
closed, the “Shore supply ON” (P10), “Voltage present” (P12-1, P12-2 and P12-3) lamps will light up,
indicating the presence of the three-phase shore power supply.
If the rolling stock three phase monitoring device (F22) (phase sequence, missing phase detection and
voltage monitoring) confirms no faults, two methods of controlling the isolation contactor (Q20) are available:
— if the TCMS is informed through an auxiliary contact of the phase monitoring device (F22), the TCMS
provides the command to close the isolation contactor (Q20);
— if control of isolation contactor (Q20) is required without TCMS involvement, the auxiliary contact (F22-1)
of the three phase monitoring device (F22) directly energizes the isolation contactor (Q20), see 5.3.9.
The rolling stock 3AC train line is now connected to the shore power supply.
NOTE When operating on shore supply higher voltages can be generated in other circuits in the rolling stock,
depending on the design. Usually this is addressed in the maintenance manual.
4.3.1.4 Fault occurrence
The shore supply is automatically de-energized by any of the following causes:
— disconnection or partial disconnection of the shore supply cable connector at the rolling stock side;
— disconnection or partial disconnection of the shore supply cable connector (if present) at the shore supply;
— detection of a fault by the residual current protection device (F20);
— detection of a fault by the overload and short circuit protection device (F10) on the shore side;
— activation of any optional system opening the control loop (e.g. fire protection, earth fault detection device
(F23), TCMS).
4.3.1.5 De-energizing and disconnecting
To deenergise the shore supply OFF-button is pressed. The isolation contactor (Q10) is opened. The “Shore
supply ON” (P10) and “Voltage present” (P12-1, P12-2 and P12-3) lamps will turn off, indicating the absence
of three-phase shore power supply. The three-phase monitoring device (F22) will detect the absence of the
three-phase shore power supply and the isolation contactor Q20 opens, disconnecting the 3AC train line from
the shore supply.
The shore supply cable may be disconnected from the rolling stock. As soon as the shore supply cable is
disconnected from the rolling stock, the “Control loop OK” (P11) lamp will turn off. After all other shore
services (e.g. air supply, water etc.) are disconnected, the rolling stock may be connected to the main supply
(e.g. contact line, ground level conductor rail etc.).
4.3.1.6 Feedback
If the “Control loop OK” (P11) lamp lights up when no rolling stock is connected a cable fault is present. The
cable should be repaired before use since the rolling stock would be unable to de-energize the shore supply
as a result of the causes described in 4.3.1.4.
4.4 Connection diagrams 63/125 A
Figure 3 describes the connection with a fixed cable on the shore side and a free female connector to the
rolling stock side.
Figure 3 — Connection diagram 63/125 A with fixed cable
Figure 4 describes the connection with a fixed female connector on the shore side and a free cable with one
free male connector and one free female connector.
Figure 4 — Connection diagram 63/125 A with a free cable
4.5 Connection diagrams 600 A
Figure 5 describes the connection with a fixed cable on the 600 A shore side and a free male connector on the
rolling stock side.
Figure 5 — Connection diagram 600 A system with the PE conductor
5 General requirements
5.1 Alternative implementations
Alternative implementations in technology, combination of functions and additions to Figure 2 are permissible
as long as:
— compatibility objective for shore supply and rolling stock shall be achieved;
— all requirements specified in this document shall be fulfilled;
— connector pin functions shall not be changed.
5.2 Shore supply system power ratings
5.2.1 Three-phase requirements
Table 1 provides an overview of the three-phase power requirements of the 63/125 A and 600 A shore supply
and the connector type used.
Table 1 — Shore supply power ratings
Shore supply system Rated operating current Remarks Connector type
(continuous load at an
ambient temperature of
20 °C)
3-phase AC; 600 A per conductor 400 kVA B
400 V, 50 Hz High power system
3-phase AC + N; 125 A per conductor 86 kVA A
400 V, 50 Hz
Medium power system
3-phase AC + N; 63 A per conductor 44 kVA A
400 V, 50 Hz
Low power system
The Neutral conductor shall have the same cross section area as per a phase conductor.
5.2.2 Shore supply current rating
The shore supply shall communicate its current rating to the rolling stock by connecting the CP A as given in
Table 2.
Table 2 — Current rating identification
Shore supply current rating CP A voltage against CP B
63 A 0V or CP A not connected
125 A +24V
5.2.3 Control loop SELV system requirements
The SELV power supply:
— shall be galvanically isolated;
— shall be able to provide a 5 A continuous load curre
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