oSIST prEN 50562-2:2025
(Main)Fixed installations for railway applications - Safety of electric traction power supply systems - Part 2: Generic approach for non-conventional applications, functions and properties
Fixed installations for railway applications - Safety of electric traction power supply systems - Part 2: Generic approach for non-conventional applications, functions and properties
This document defines the process, protective measures and demonstration of safety in accordance with prEN 50126-1:2017 and prEN 50126-2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground.
This document has two parts:
This document supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems that remain after the application of prEN 50562 1:2025.
NOTE EN 50562 1 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems.
This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline.
This document does not apply to:
— 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,
This document does not consider aspects like IT-security or protection against other malevolent acts etc. It is assumed that those aspects are handled on the overall system level.
NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT-security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from Safety applications.
Fiksni postroji za železniške naprave - Varnost napajalnih sistemov električne vleke - 2. del: Splošni pristop za nekonvencionalne načine uporabe, funkcije in lastnosti
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Fiksni postroji za železniške naprave - Varnost napajalnih sistemov električne
vleke - 2. del: Splošni pristop za nekonvencionalne načine uporabe, funkcije in
lastnosti
Fixed installations for railway applications - Safety of electric traction power supply
systems - Part 2: Generic approach for non-conventional applications, functions and
properties
Ta slovenski standard je istoveten z: prEN 50562-2:2025
ICS:
29.280 Električna vlečna oprema Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD DRAFT
prEN 50562-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2025
ICS 29.280 Will supersede EN 50562:2018 (PART)
English Version
Fixed installations for railway applications - Safety of electric
traction power supply systems - Part 2: Generic approach for
non-conventional applications, functions and properties
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2025-08-22.
It has been drawn up by CLC/SC 9XC.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CENELEC 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 73168 Ref. No. prEN 50562-2:2025 E
1 Contents Page
2 European foreword . 4
3 Introduction . 5
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 6
7 4 Abbreviations. 7
8 5 Risk assessment process . 7
9 6 Delta analysis. 10
10 6.1 General . 10
11 6.2 Aim of the delta analysis . 10
12 6.3 Output of the delta analysis . 10
13 6.4 Identification of additional hazards for the system under consideration . 10
14 6.4.1 General . 10
15 6.4.2 New technologies and other changes . 11
16 6.4.3 Hazard identification approach . 11
17 6.4.4 Reference to existing analyses . 12
18 7 Comparison with other CoPs or accepted solutions (Box B) . 12
19 7.1 General . 12
20 7.2 Identification of the reference solution . 12
21 8 Explicit risk estimation (Box C) . 13
22 8.1 General . 13
23 8.2 Design baseline and subsequent improvement . 14
24 8.3 Risk estimation . 14
25 8.4 Modification . 14
26 9 SIL allocation (Box D) . 14
27 9.1 General . 14
28 9.2 Risk graph . 15
29 9.2.1 Calibrated risk graph classification tables . 15
30 9.2.2 Severity of an accident in terms of consequences . 15
31 9.2.3 Frequency and duration of exposure . 15
32 9.2.4 Likelihood to avoid the accident . 15
33 9.2.5 Frequency of occurrence of a situation where the independent function is required . 15
34 9.3 Risk graph representation . 15
35 10 Implementation of SIL (Box E) . 16
36 10.1 System requirements . 16
37 10.2 Selection of a software standard . 17
38 10.2.1 General . 17
39 10.2.2 Quality management and processes . 18
40 10.2.3 Organisational aspects . 18
41 10.2.4 Software environment . 19
42 10.2.5 Platform solutions . 19
43 11 Demonstration of compliance with the safety requirements (Box F) . 19
44 11.1 Demonstration of compliance when applying CoP or SIM . 19
45 11.2 Demonstration of compliance when applying ERE . 19
46 Annex A (informative) Hazard identification . 20
47 Annex B (informative) Keywords for guidance to delta analysis . 22
48 Annex ZZ (informative) Relationship between this European Standard and the Essential
49 Requirements of EU Directive (EU) 2016/797 aimed to be covered . 28
50 Bibliography . 30
51 European foreword
52 This document (prEN 50562-2:2025) has been prepared by CLC/SC 9XC “Electric supply and earthing
53 systems for public transport equipment and ancillary apparatus (Fixed installations)” of CLC/TC 9X
54 “Electrical and electronic applications for railways”.
55 This document is currently submitted to the Enquiry.
56 The following dates are proposed:
• latest date by which the existence of this (doa) dav + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dav + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
57 This document will partially supersede EN 50562:2018 and all of its amendments and corrigenda (if any).
58 prEN 50562-2:2025 includes the following significant technical changes with respect to EN 50562:2018:
59 — The standard has been supplemented by a second part; Part 1 covers conventional applications,
60 functions and properties by the application of codes of practice. Part 2 covers non-conventional
61 applications, functions and properties by application of codes of practice of other provenance,
62 comparison with reference systems and explicit risk estimation.
63 — Annex B “Documents related to EN 50562” has been removed; The content has been shifted to the
64 Bibliography.
65 — Annex C “Combination of risk acceptance principles” has been integrated in Part 2;
66 — Annex D “Guidance of software for safety functions on system level” has been integrated in Part 2.
67 The EN 50562 series consists of the following parts:
68 — Part 1: Generic approach for conventional applications, functions and properties
69 — Part 2: Generic approach for non-conventional applications, functions and properties
70 This document has been prepared under a standardization request addressed to CENELEC by the
71 European Commission. The Standing Committee of the EFTA States subsequently approves these
72 requests for its Member States.
73 For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of this
74 document.
75 Introduction
76 The introduction of prEN 50562-1:2025 covers this document.
77 1 Scope
78 This document defines the process, protective measures and demonstration of safety in accordance with
79 prEN 50126-1:2017 and prEN 50126-2:2017 for AC and DC electric traction power supply systems for
80 railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be
81 elevated, at-grade and underground.
82 This document has two parts:
83 This document supports the implementation of non-conventional applications, functions and properties in
84 electric traction power supply systems that remain after the application of prEN 50562-1:2025.
85 NOTE EN 50562-1 establishes the code of practice for conventional applications, functions and properties in
86 electric traction power supply systems.
87 This document applies to electric traction power supply systems, which are new or are undergoing major
88 changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the
89 safety considerations can be used as a guideline.
90 This document does not apply to:
91 — underground mine traction systems,
92 — cranes, transportable platforms and similar transportation equipment on rails, temporary structures
93 (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the
94 contact line system and are not endangered by the traction power supply system,
95 — suspended cable cars,
96 — funicular railways,
97 — magnetic levitated systems,
98 This document does not consider aspects like IT-security or protection against other malevolent acts etc. It
99 is assumed that those aspects are handled on the overall system level.
100 NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT-security
101 applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the
102 frequent patch processes for updating the IT-security applications is expected
...
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