prEN 50463-1:2025
(Main)Railway applications - Energy measurement on board trains - Part 1: General
Railway applications - Energy measurement on board trains - Part 1: General
EN 50463-1 describes the primary purpose of the EMS, which is to meter energy consumption for billing and provide compiled energy billing data (CEBD) to a DCS. The EMS may also be used for other functions such as energy management. In addition, EN 50463-1 also describes the primary purpose of a DCS and its interactions with an EMS and settlement system.
Bahnanwendungen - Energiemessung auf Bahnfahrzeugen - Teil 1: Allgemeines
Applications ferroviaires - Mesure d'énergie à bord des trains - Partie 1 : Généralités
Železniške naprave - Merjenje energije na vlaku - 1. del: Splošno
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Železniške naprave - Merjenje energije na vlaku - 1. del: Splošno
Railway applications - Energy measurement on board trains - Part 1: General
Bahnanwendungen - Energiemessung auf Bahnfahrzeugen - Teil 1: Allgemeines
Applications ferroviaires - Mesure d'énergie à bord des trains - Partie 1 : Généralités
Ta slovenski standard je istoveten z: prEN 50463-1:2025
ICS:
45.060.10 Vlečna vozila Tractive stock
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD DRAFT
prEN 50463-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2025
ICS 45.060.10 Will supersede EN 50463-1:2017; EN 50463-
1:2017/A1:2024
English Version
Railway applications - Energy measurement on board trains -
Part 1: General
Applications ferroviaires - Mesure d'énergie à bord des Bahnanwendungen - Energiemessung auf Bahnfahrzeugen
trains - Partie 1 : Généralités - Teil 1: Allgemeines
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-01-23.
It has been drawn up by CLC/TC 9X.
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: 81039 Ref. No. prEN 50463-1:2025 E
1 Contents Page
2 European foreword . 4
3 Introduction . 5
4 1 Scope . 8
5 2 Normative references . 8
6 3 Terms, definitions and abbreviations . 9
7 3.1 Terms and definitions . 9
8 3.2 Abbreviations . 14
9 4 Requirements . 15
10 4.1 General . 15
11 4.2 System level requirements . 15
12 4.2.1 General . 15
13 4.2.2 Accuracy . 15
14 4.2.3 EMS operation and power supply . 15
15 4.2.4 EMS measuring input. 16
16 4.2.5 Data handling . 16
17 4.2.6 Hybrid trains . 18
18 4.2.7 RAMS . 19
19 4.2.8 Cybersecurity . 19
20 4.3 Device level requirements . 20
21 4.3.1 Marking and availability of essential data . 20
22 4.3.2 Interfaces . 20
23 4.3.3 Data processing and transfer . 21
24 4.3.4 Software . 21
25 4.3.5 Dataflow security . 22
26 4.3.6 Environmental conditions . 23
27 4.3.7 Mechanical requirements, construction and design . 24
28 4.3.8 Electrical requirements . 25
29 5 Test . 26
30 Annex A (informative) Cybersecurity guideline for an EMS . 27
31 A.1 General . 27
32 A.2 Overview . 27
33 A.3 System under Consideration . 27
34 A.4 Risk Analysis . 27
35 A.5 Detailed Risk Analysis . 28
36 A.6 Procurement of components (component and control systems) . 28
37 A.7 Integration . 30
38 A.8 Cybersecurity Case . 30
39 A.9 Operational/Maintenance Phase - Risk analysis review . 30
40 A.10 Decommissioning . 31
41 A.11 Cybersecurity patch process . 31
42 Annex ZZ (informative) Relationship between this European Standard and the Essential
43 Requirements of Directive 2016/797/EU aimed to be covered . 32
44 Bibliography . 33
46 Figures
47 Figure 1 — EMS functional structure and dataflow diagram . 7
48 Figure 2 — Example of energy index value . 11
49 Figure 3 — CP Commissioning . 17
50 Figure 4 — CP Maintenance . 18
52 Tables
53 Table A.1 — EMS essential functions . 28
54 Table A.2 — EMS correspondence with EN IEC 62443-4-2 . 28
55 Table ZZ.1 — Correspondence between this European Standard, Commission Regulation (EU)
56 N° 1302/2014 concerning the Technical Specification for Interoperability relating to the ‘rolling stock
57 — locomotives and passenger rolling stock’ subsystem of the rail system in the European Union*
58 and Directive (EU) 2016/797 . 32
60 European foreword
61 This document (prEN 50463-1:2025) has been prepared by CLC/TC 9X “Electrical and electronic
62 applications for railways”.
63 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)
64 This document will supersede EN 50463-1:2017 and all of its amendments and corrigenda (if any).
65 prEN 50463-1:2025 includes the following significant technical changes with respect to EN 50463-1:2017:
66 — creation of consumption point (i.e. EMS installed on-board);
67 — introduction of hybrid trains;
68 — grouping and adjusting cybersecurity requirements in new clause and in informative annex;
69 — added Figures on commissioning and maintenance.
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 requests
72 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 This document is Part 1 of EN 50463 series which consists of the following parts, under the common title
76 Railway applications — Energy measurement on board trains:
77 — Part 1: General;
78 — Part 2: Energy measuring;
79 — Part 3: Data handling;
80 — Part 4: Communication;
81 — Part 5: Conformity assessment.
82 This series of European Standards follows the functional guidelines description in EN ISO/IEC 17000:2004,
83 Annex A “Principles of conformity assessment”, tailored to the energy measurement system (EMS).
84 Introduction
85 The energy measurement system (EMS) provides measurement and data suitable for billing and may also
86 be used for energy management, e.g. energy saving.
87 This series of European Standards uses the functional approach to describe the EMS and on-ground data
88 collecting system (DCS). These functions are implemented in one or more physical devices. The user of this
89 Series of standards is free to choose the physical implementation arrangements.
90 a) Structure and main contents of EN 50463 series:
91 This series of European Standards is divided into five parts. The titles and brief descriptions of each part
92 are given below:
93 1) EN 50463-1 — General:
94 The scope of EN 50463-1 is the energy measurement system (EMS).
95 EN 50463-1 provides system level requirements for the complete EMS and common requirements
96 for all devices implementing one or more functions of the EMS.
97 2) EN 50463-2 — Energy measuring:
98 The scope of EN 50463-2 is the energy measurement function (EMF).
99 The EMF provides measurement of the consumed and regenerated active energy of a railway
100 traction unit. If the traction unit is designed for use on AC electric traction power supply systems the
101 EMF also provides measurement of reactive energy. The EMF provides the measured quantities via
102 an interface to the data handling system.
103 The EMF consists of the three functions: voltage measurement function, current measurement
104 function and energy calculation function. For each of these functions, accuracy classes are
105 specified and associated reference conditions are defined. EN 50463-2 also defines all specific
106 requirements for all functions of the EMF.
107 The voltage measurement function measures the voltage of the contact line (CL) system and the
108 current measurement function measures the current taken from and returned to the CL system.
109 These functions provide signal inputs to the energy calculation function.
110 The energy calculation function inputs the signals from the current and voltage measurement
111 functions and calcula
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.