EN 50562:2018

SLOVENSKI STANDARD
01-september-2018
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SIST-TS CLC/TS 50562:2011
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Railway applications - Fixed installations - Process, protective measures and
demonstration of safety for electric traction systems
Bahnanwendungen - Ortsfeste Anlagen - Prozess, Schutzmaßnahmen und
Nachweisführung für die Sicherheit in der Bahnstromversorgung
Applications ferroviaires - Installations fixes - Processus, mesures de prévention et
démonstration de la sécurité pour les installations fixes de traction électrique
Ta slovenski standard je istoveten z: EN 50562:2018
ICS:
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50562
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2018
ICS 29.280 Supersedes CLC/TS 50562:2011
English Version
Railway applications - Fixed installations - Process, protective
measures and demonstration of safety for electric traction
systems
Applications ferroviaires - Installations fixes - Processus, Bahnanwendungen - Ortsfeste Anlagen - Prozess,
mesures de prévention et démonstration de la sécurité pour Schutzmaßnahmen und Nachweisführung für die Sicherheit
les installations fixes de traction électrique für elektrische Bahnanlagen
This European Standard was approved by CENELEC on 2017-08-21. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50562:2018 E
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviations. 11
5 Risk assessment process . 12
5.1 General. 12
5.2 System definition . 13
5.3 Identification of additional hazards for the system under consideration . 14
5.4 Risk assessment . 16
5.5 Demonstration of safety . 17
6 Definition of the generic reference system of an electric traction system . 18
6.1 General. 18
6.2 Electric traction system . 18
6.3 Substations and switching stations . 19
6.4 Contact line system . 22
6.5 Return circuit . 22
6.6 Interfaces to the electric traction system . 23
6.7 Interfaces to substations and switching stations . 24
6.8 Interfaces to contact line system . 25
6.9 Interfaces to return circuit. 26
7 Protective measures of the generic electric traction system . 27
7.1 General. 27
7.2 General protective measures . 27
7.3 Substations and switching stations . 29
7.4 Contact line system . 30
7.5 Return circuit . 31
Annex A (informative) Explanation of the risk assessment process for the generic reference
system . 32
Annex B (informative) Documents related to EN 50562 . 52
Annex C (informative) Combination of risk acceptance principles . 58
Annex D (informative) Guidance on software for safety functions on system level . 60
Annex ZZ (informative) Relationship between this European standard and the essential
requirements of EU Directive 2008/57/EC [2008 OJ L191] aimed to be covered . 62
Bibliography . 63

European foreword
This document (EN 50562:2018) has been prepared by CLC/SC 9XC “Electric supply and earthing
systems for public transport equipment and ancillary apparatus (Fixed installations)”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2018-07-26
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2021-01-26
conflicting with this document have to
be withdrawn
This document supersedes CLC/TS 50562:2011.
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 mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
Introduction
This European Standard provides a code of practice (CoP) for the process, protective measures and
demonstration of safety for the conventional electric traction systems which supports the application of
EN 50126. Within this standard “safety” is used with respect to harm to people and environment. Safety in
terms of harm to assets is covered in the relevant product and application standards.
This standard includes a systems description for the generic reference system for a conventional electric
traction system (refer to Figure 3) and the related subsystems. The interfaces with respect to safety at the
system borders and the respective aspects to be coordinated are described. Based on the list of top-level
hazards and endangered groups protective measures for risk mitigation and hazard control are derived
and indications for the verification and validation procedures are given. The list of standards given in
Annex B can serve as a reference.
During the preparation of this European Standard it became obvious, that the risks associated with
conventional electric traction systems are broadly accepted. This conclusion is based on long term
experience from several European railways. The technical systems used by these European railways in
their conventional electric traction systems are equivalent to the generic reference system described in
this standard. Confidential field data that were taken into account represent more than 1 200 000 year km
operational experience. To exemplify, the equivalent would be a network size of about 80 000 km and the
operational experience laid down in traceable field data would cover a period of 15 years of service. No
fatality was reported caused by a product property or a failure of a specified function of the conventional
electric traction systems.
This standard has been developed specifically to support the realization of EN 50126 within the context of
safety for electric traction systems. It provides generic building blocks which assists the fulfilment of the
requirements of life cycle steps given in EN 50126. Product and application standards are traditionally
applied in fixed installations to ensure safety and performance in terms of e.g. reliability and cost
efficiency. Within this standard the link between existing product and application standards, technical
specification for interoperability and EN 50126 is given.
This standard complies with the principles of the life cycle modelling according to EN 50126 by tailoring
the risk assessment process. This means that this standard encompasses the entire safety process
ranging from the system description, hazards identification to the verification and validation of the
implemented protective measures according to EN 50126 and it is not just a summation of product and
application standards.
This standard has been developed so that it can also be used for assessing risks arising from technical
changes within the legal framework of the European Union.
This standard also supports the decision making regarding the assessment of changes, e.g. with respect
to the significance of changes in technologies. It includes in particular the risk acceptance principle
regarding the application of codes of practice. It also supports the application of the risk acceptance
principles similar reference systems and explicit risk estimation for electric traction systems in the
framework of EN 50126.
When applying TSIs, e.g. TSI Energy, this standard supports the demonstration of the inherent safety of
the conventional electric traction system and supports the safe integration at overall system level.
Amongst others this standard can be used as a code of practice for conventional electric traction
systems. This does not exclude consideration of other codes of practice even from other fields of
application.
The interrelation between the legal framework, the standards traditionally applied and the set of standards
confined to safety is shown in Figure 1.
Figure 1 — Interrelationship between standards and the legal framework
1 Scope
This European Standard defines the process, protective measures and demonstration of safety in
accordance with EN 50126 for conventional electric traction systems for railways. This standard can also
be applied to guided mass transport systems and trolleybus systems. All these systems can be elevated,
at-grade and underground.
Other systems including those listed below were not assessed and therefore are outside the scope of this
European Standard:
– underground mine traction systems,
– cranes, transportable platforms and similar transportation equipment on rails, temporary structures
(e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the
contact line system and are not endangered by the traction power supply system,
– suspended cable cars,
– funicular railways,
– magnetic levitated systems,
– railways with inductive power with inductive contactless transmission of the energy from the electric
traction power supply system to the electrically powered traction unit,
– railways with buried contact line system that is required to be energised only belo
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