SIST EN 50562:2018
(Main)Railway applications - Fixed installations - Process, protective measures and demonstration of safety for electric traction systems
Railway applications - Fixed installations - Process, protective measures and demonstration of safety for electric traction systems
This European Standard defines the process, protective measures and demonstration of safety in accordance with EN 50126 for the conventional electric traction system of railways applications. The standard can also apply 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. For similar technology and similar hazardous scenarios the safety considerations of this standard can be applied as a guideline where applicable.
– 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 below the train to ensure safety,
This European Standard applies to conventional electric traction systems, which are new or are undergoing major changes on new or existing lines.
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
Železniške naprave - Stabilne naprave električne vleke - Postopki, zaščitni ukrepi in prikazovanje varnosti električnih sistemov vleke
Ta evropski standard opredeljuje postopek, zaščitne ukrepe in prikazovanje varnosti v skladu s standardom EN 50126 za običajne električne sisteme vleke pri železniških napravah. Standard je mogoče uporabiti tudi za vodene sisteme javnega prevoza in trolejbusne sisteme. Vsi ti sistemi so lahko dvignjeni, na tleh ali podzemni.
Drugi sistemi, vključno s spodaj naštetimi, niso bili ocenjeni. Za podobno tehnologijo in podobne scenarije tveganja je mogoče varnostne vidike iz tega standarda uporabiti kot smernice, kjer je to primerno.
– vlečni sistemi za podzemne rudnike,
– žerjavi, premične ploščadi in podobna transportna oprema na tirih, začasne konstrukcije (npr. razstavne konstrukcije) pod pogojem, da se ne napajajo neposredno ali prek transformatorjev iz sistema kontaktnega vodnika ter jih ne ogroža vlečni napajalni sistem,
– obešene nihalne žičnice,
– vzpenjače,
– sistemi na magnetni blazini,
– železnice z induktivnim napajanjem z induktivnim brezstičnim prenosom energije iz napajalnega sistema za električno vleko do električne vlečne enote,
– železnice s podzemnim sistemom voznih vodov, za katere se zaradi varnostnih razlogov zahteva napajanje tik pod vlakom,
Ta evropski standard se uporablja za običajne električne sisteme vleke, ki so novi ali so predmet velikih sprememb na novih ali obstoječih progah.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50562:2018
01-september-2018
1DGRPHãþD
SIST-TS CLC/TS 50562:2011
äHOH]QLãNHQDSUDYH6WDELOQHQDSUDYHHOHNWULþQHYOHNH3RVWRSNL]DãþLWQLXNUHSL
LQSULND]RYDQMHYDUQRVWLHOHNWULþQLKVLVWHPRYYOHNH
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
SIST EN 50562:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50562:2018
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SIST EN 50562:2018
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
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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
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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.
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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.
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Figure 1 — Interrelationship between standards and the legal framework
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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 below the train to
ensure safety,
For similar technology and similar hazardous scenarios, the safety considerations of this standard can be
used as a guideline. This European Standard applies to conventional electric traction systems, which are
new or are undergoing major changes.
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 50110 (series), Operation of electrical installations
EN 50119, Railway applications - Fixed installations - Electric traction overhead contact lines
EN 50122 (series), Railway applications – Fixed installations – Electrical safety, earthing and the return
circuit
EN 50123 (series), Railway applications – Fixed installations – DC switchgear
EN 50124 (series), Railway applications – Insulation coordination
EN 50126 (series), Railway applications – The specification and demonstration of Reliability, Availability,
Maintainability and Safety (RAMS)
EN 50152 (series), Railway applications – Fixed installations – Particular requirements for AC switchgear
EN 50153, Railway applications - Rolling stock - Protective provisions relating to electrical hazards
EN 50163, Railway applications - Supply voltages of traction systems
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EN 50388, Railway Applications - Power supply and rolling stock - Technical criteria for the coordination
between power supply (substation) and rolling stock to achieve interoperability
EN 50633, Railway applications - Fixed installations - Protection principles for AC and DC electric traction
systems
CLC/TR 50488, Railway applications - Safety measures for the personnel working on or near overhead
contact lines
EN 60255 (series), Measuring relays and protection equipment (IEC 60255)
EN 61508 (series), Functional safety of electrical/electronic/programmable electronic safety-related
systems (IEC 61508)
EN 62305 (series), Protection against lightning (IEC 62305)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
contact line system
support system and contact line supplying electric energy to vehicles through current collecting
equipment
Note 1 to entry: The contact line system can comprise.
- the contact line,
- masts and foundations,
- supports and any components registering the conductors,
- cross-spans or cables,
- tensioners,
- other along track conductors such as feeders, earth wires and return conductors when supported from the same
masts as the contact line,
- conductors connected permanently to the contact line for supplying other electrical equipment such as lighting,
signal operation, point control and point heating.
[SOURCE: IEC 60050-811:2017, 811-33-59]
3.2
conventional electric traction system
electric traction system constructed, operated and maintained according to relevant standards and
common practice
3.3
current collector zone
CCZ
zone whose limits are in general not exceeded by an energized collector no longer in contact with the
contact line or broken collector and its fragments
[SOURCE: EN 50122-1:2011, 3.5.10]
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3.4
effective touch voltage
U
te
voltage between conductive parts when touched simultaneously by a person or an animal
Note 1 to entry: The value of the effective touch voltage can be appreciably influenced by the impedance of the
person or the animal in electric contact with these conductive parts.
Note 2 to entry: The conductive path through the body is conventionally from hand to both feet (horizontal distance of
1 m) or from hand to hand.
[SOURCE: IEC 60050-195:1998, 195-05-11, modified - “(effective)” replaced with “effective”, Note 2 to
entry has been added.]
3.5
electric safety
freedom from unacceptable risk of harm caused by electrical systems
[SOURCE: EN 50122-1:2011, 3.1.1]
3.6
electric shock
physiological effect resulting from an electric current passing through a human or animal body
[SOURCE: IEC 60050-195:1998, 195-01-04]
3.7
electric traction system
railway electric distribution network used to provide energy for rolling stock
Note 1 to entry: The system includes
– contact line systems,
– return circuit of electric traction systems,
– running rails of non-electric traction systems, which are in the vicinity of, and conductively connected to the running
rails of an electric traction system,
– electric installations, which are supplied from contact lines either directly or via a transformer,
– electric installations in power plants and substations, which are utilized solely for generation and distribution of
power directly to the contact line,
– electric installations of switching stations.
[SOURCE: IEC 60050-811:2017, 811-36-21]
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3.8
hazard
potential source of harm
Note 1 to entry: The In English, the term “hazard” can be qualified in order to define the origin of the hazard or the
nature of the expected harm (e.g. “electric shock hazard”, “crushing hazard”, “cutting hazard”, “toxic hazard”, “fire
hazard”, “drowning hazard”).
Note 2 to entry: In French, the synonym “risque” is used together with a qualifier or a complement to define the origin
of the hazard or the nature of the expected harm (e.g. “risque de choc électrique”, “risque d'écrasement”, “risque de
coupure”, “risque toxique”, “risque d'incendie”, “risque de noyade”).
Note 3 to entry: In French, the term “risque” also denotes the combination of the probability of occurrence of harm
and the severity of that harm, in English “risk” (see 903–01–07).
[SOURCE: IEC 60050-903:2013, 903-01-02]
3.9
overhead contact line zone
OCLZ
zone whose limits are in general not exceeded by a broken overhead contact line
[SOURCE: EN 50122-1:2011, 3.5.9]
3.10
protection
provisions for detecting faults or other abnormal operating conditions in a power system, for enabling fault
clearance, for terminating abnormal operating conditions, and for initiating signals or indications
Note 1 to entry: The term “protection” is a generic term for protection equipment or protection systems.
Note 2 to entry: The term “protection” may be used to describe the protection of a complete power system or the
protection of individual plant items in a power system e.g. transformer protection, line protection, generator protection.
Note 3 to entry: Protection does not include items of power system plant provided, for example, to limit overvoltages
on the power system. However, it includes items provided to control the power system voltage or frequency
deviations such as automatic reactor switching, load-shedding, etc.
[SOURCE: IEC 60050-448:1995, 448-11-01, modified – abnormal condition becomes abnormal operating
conditions]
3.11
protective measure
measure intended to achieve adequate risk reduction, implemented:
- by the designer (inherent design, safeguarding and complementary protective measures,
information for use) and
- by the user (organization: safe working procedures, supervision, training; permit-to-work systems;
provision and use of additional safeguards; use of personal protective equipment)
[SOURCE: IEC 60050-903:2013, 903-01-17]
3.12
return cable
conductor connecting the running rails or other parts of the return circuit to the substation
Note 1 to entry: Similar to IEC 60050-811-35–04.
[EN 50122-1:2011, 3.3.5]
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3.13
return circuit
all conductors which form the intended path for the traction return current and the current under fault
conditions
Note 1 to entry: The conductors may be for example:
– running rails;
– return conductor rails;
– return conductors;
– return cables.
Note 2 to entry: The definition applies to return currents during operation and fault conditions.
[SOURCE: IEC 60050-811:2017, 811-35-01, modified - Note 2 to entry has been added]
3.14
return conductor
conductor paralleling the track return system and connected to the running rails at periodic intervals
[SOURCE: IEC 60050-811:2017, 811-35-13]
3.15
return conductor rail
conductor rail used instead of the running rail for the traction return currents
[SOURCE: IEC 60050-811:2017, 811-34-10]
3.16
safety
freedom from unacceptable risk
[SOURCE: ISO/IEC Guide 116:2010, 3.16], [SOURCE: IEC 60050-903:2013, 903-01-19]
3.17
switchgear and controlgear
switching devices and their combination with associated control, measuring, protective and regulating
equipment, also assemblies of such devices and equipment with associated interconnections,
accessories, enclosures and supporting structures, intended in principle for use in connection with
generation, transmission, distribution and conversion of electric energy
[SOURCE: IEC 60050-441:2000, 441-11-01]
3.18
system hazard
unintended condition within a technical system which contributes to a top-level hazard
Note 1 to entry: A system hazard can include defects and deficiencies of functions and properties.
3.19
top-level hazard
physical situation that provides a potential source of harm where no further barriers are specified
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3.20
track circuit
electrical circuit of which the rails of a track section form a part, with usually a source of current connected
at one end and a detection device at the other end for detecting whether this track section is clear or
occupied by a vehicle
Note 1 to entry: In a continuous signalling system, the track circuit may be used to transmit information between the
ground and the train.
[SOURCE: IEC 60050-821:2017, 821-03-01]
4 Abbreviations
Table 1 — Abbreviations and acronyms
Abbreviation and Explanation
acronym
AC Alternating Current
ACRC Automated Connection to the Return Circuit
CCZ Current Collector Zone
CoP Code of Practice
CSM RA Common Safety Methods - Risk Assessment
DC Direct Current
EMC Electromagnetic Compatibility
ERE Explicit Risk Estimation
HD CEN/CENELEC harmonization document
HMI Human Machine Interface
O&M Operation and Maintenance
OCLZ Overhead Contact Line Zone
OTHERS Other groups of persons besides PAX, PUB and STAFF, such as trespasser,
vandals etc. characteristic: knowing that there are residual risks when entering
the vicinity of tracks, power lines and contact line systems
PAX Passengers of the railway. characteristic: not expecting a risk
PUB General public, e.g. neighbourhood, passer-by, but not passengers.
characteristic: not expecting a risk
SIM Comparison with a similar reference system
S-SIL Software Safety Integrity Level
STAFF Competent persons having the permission for access to and work on railway
assets, e.g. railway personnel, civil workers for railway construction, search
and rescue etc. Characteristic: knowing that there are residual risks when
entering electrical rooms or the vicinity of tracks, power lines and contact line
systems
TLH Top Level Hazard
TSI Technical Specification for Interoperability
T&C Testing and Commissioning
WHO World Health Organization of the United Nations
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5 Risk assessment process
5.1 General
Precondition for the application of this European Standard as a code of practice is that the design,
construction, operation and maintenance of electric traction systems follow the relevant standards to
ensure safety. For applications where no specific standards exist, safety shall be established by the
application of the risk acceptance principles 'comparison with a similar reference system' and 'explicit risk
estimation'. If explicit risk estimation is applied the safety process shall follow EN 50126 or EN 61508 or
equivalent.
NOTE The risk assessment process for application of code of practice or comparison with similar reference
system the process is a part of a hazard management process, e.g. with respect to life cycle.
This clause describes how to:
– define the system under consideration and the relevant interfaces,
– apply gap analysis and perform risk assessment,
– apply protective measures,
– demonstrate safety.
Clause 6 of this standard describes an electric traction system that serves as a generic reference system.
When using this standard for the risk acceptance principles application of a code of practice and for the
comparison with a similar reference system the risk assessment shall be focused on the differences of
the reference system and the system under consideration. The reference system can be derived from the
generic reference system defined in Clause 6 or from an existing system that is proven in use and has an
acceptable safety level within a similar conditions and operational context.
In case the generic reference system is chosen, the protective measures (Clause 7) identified shall be
evaluated regarding their applicability for the system under consideration and protective measures for
new hazards shall be added. For other reference systems this applies in analogy but based on the
protective measures of the generic reference system in clause 6 of this standard.
The risk assessment process for an electric traction system is a process tailored from EN 50126 and
consists of the following steps shown in Figure 2.
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Figure 2 — Risk assessment process for an electric traction system
5.2 System definition
The system under consideration, operational conditions and procedures, environment and its interfaces
shall be described in a level of detail that enables the analysis to be undertaken. The system may be
structured in subsystems as far as it is necessary. The main functions and components shall be included
in the system definition. Application conditions shall be documented and taken into account.
The system definition of the system under consideration shall be comparable to the system definition of
the reference system. The reference system serves as a bench mark for the system under consideration
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in terms of design, operational context, protective measures, environmental conditions etc. The reference
system can be an existing system or the generic reference system described in this standard.
5.3 Identification of additional hazards for the system under
...
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