kSIST FprEN 50121-3-1:2022

SLOVENSKI STANDARD
oSIST prEN 50121-3-1:2021
01-julij-2021
Železniške naprave - Elektromagnetna združljivost - 3-1. del: Vozna sredstva - Vlak
in celotno vozilo
Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and
complete vehicle
Bahnanwendungen - Elektromagnetische Verträglichkeit - Teil 3-1: Bahnfahrzeuge – Zug
und gesamtes Fahrzeug
Applications ferroviaires - Compatibilité électromagnétique - Partie 3-1: Matériel roulant –
Trains et véhicules complets
Ta slovenski standard je istoveten z: prEN 50121-3-1:2021
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
oSIST prEN 50121-3-1:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 50121-3-1:2021
oSIST prEN 50121-3-1:2021
EUROPEAN STANDARD DRAFT
prEN 50121-3-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2021
ICS  Will supersede EN 50121-3-1:2017 and all of its
amendments and corrigenda (if any)
English Version
Railway applications - Electromagnetic compatibility - Part 3-1:
Rolling stock - Train and complete vehicle
Applications ferroviaires - Compatibilité électromagnétique - Bahnanwendungen - Elektromagnetische Verträglichkeit -
Partie 3-1: Matériel roulant - Trains et véhicules complets Teil 3-1: Bahnfahrzeuge - Zug und gesamtes Fahrzeug
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2021-10-15.

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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 73241 Ref. No. prEN 50121-3-1:2021 E

oSIST prEN 50121-3-1:2021
prEN 50121-3-1:2021 (E)
1 Contents
2 European Foreword . 3
3 Introduction . 4
4 1 Scope . 5
5 2 Normative References . 5
6 3 Terms, Definitions And Abbreviations . 6
7 3.1 TERMS AND DEFINITIONS . 6
8 3.2 ABBREVIATIONS . 6
9 4 Applicability . 7
10 5 Immunity Requirements . 7
11 6 Emission Tests And Limits . 7
12 6.1 GENERAL . 7
13 6.2 INTERFERENCE ON OUTSIDE PARTY TELECOMMUNICATION LINES . 7
14 6.3 RADIATED ELECTROMAGNETIC DISTURBANCES . 8
15 Annex A (Informative)  Interference On Telecommunication Lines . 12
16 A.1 Harmonics In The Traction Current . 12
17 A.2 Psophometric Current Definition . 13
18 A.3 Limits And Test Conditions . 13
19 A.4 Measurement Of The Psophometric Current . 14
20 A.5 Calculation Of The Overall Psophometric Current Of A Trainset . 14
21 Annex B (Normative)  Radiated Electromagnetic Disturbances - Measurement Procedure . 16
22 B.1 Purpose. 16
23 B.2 Measuring Equipment And Test Method . 16
24 Annex C (Informative) Emission Values For Lower Frequency Range . 17
25 Annex ZZ (Informative) Relationship Between This European Standard And The Essential
26 Requirements Of Directive 2014/30/Eu [2014 Oj L96] Aimed To Be Covered . 19
27 Bibliography . 20
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prEN 50121-3-1:2021 (E)
30 European foreword
31 This document (prEN 50121-3-1:2021) has been prepared by CLC/TC 9X “Electrical and electronic
32 applications for railways”.
33 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)

34 This document will supersede EN 50121-3-1:2017 and all of its amendments and corrigenda (if any).
35 prEN 50121-3-1:2021 includes the following significant technical changes with respect to
36 EN 50121-3-1:2017:
37 — Update of the scope (Clause 1), two paragraphs moved to Clause 4;
38 — update of the normative references (Clause 2);
39 — Update of applicability (Clause 4), two paragraphs from Clause 1 were introduced;
40 — Update of the European foreword.
41 — revision of Annex ZZ.
42 This European Standard is read in conjunction with EN 50121-1.
43 This document has been prepared under a mandate given to CENELEC by the European Commission
44 and the European Free Trade Association, and supports essential requirements of EU Directive(s).
45 For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
46 document.
47 This standard forms Part 3-1 of the EN 50121 series published under the general title “Railway
48 applications - Electromagnetic compatibility”. The series consists of:
49 — Part 1: General;
50 — Part 2: Emission of the whole railway system to the outside world;
51 — Part 3-1: Rolling stock - Train and complete vehicle;
52 — Part 3-2: Rolling stock – Apparatus;
53 — Part 4: Emission and immunity of the signalling and telecommunications apparatus;
54 — Part 5: Emission and immunity of fixed power supply installations and apparatus.
oSIST prEN 50121-3-1:2021
prEN 50121-3-1:2021 (E)
55 Introduction
56 High power electronic equipment, together with low power microcontrollers and other electronic
57 devices, are being installed on trains in great numbers. Electromagnetic compatibility has therefore
58 become a critical issue for the design of train-related apparatus as well as of the train as a whole.
59 This document for rolling stock sets limits for electromagnetic emission and immunity in order to
60 ensure a well functioning system within its intended environment.
61 Immunity limits are not given for the complete vehicle. EN 50121-3-2 defines requirements for the
62 apparatus installed in the rolling stock, since it is impractical to test the complete unit. An EMC plan
63 includes equipment covered by this document.
oSIST prEN 50121-3-1:2021
prEN 50121-3-1:2021 (E)
64 1 Scope
65 This document specifies the emission and immunity requirements for all types of rolling stock. It covers
66 traction stock, hauled stock and trainsets including urban vehicles for use in city streets. This
67 document specifies the emission limits of the rolling stock to the outside world.
68 The scope of this part of the standard ends at the interface of the rolling stock with its respective
69 energy inputs and outputs. In the case of locomotives, trainsets, trams etc., this is the current collector
70 (pantograph, shoe gear). In the case of hauled stock, this is the AC or DC auxiliary power connector.
71 However, since the current collector is part of the traction stock, it is not entirely possible to exclude the
72 effects of this interface with the power supply line. The slow moving test has been designed to
73 minimize these effects.
74 There may be additional compatibility requirements within the railway system identified in the EMC plan
75 (e.g. as specified in EN 50238).
76 Electromagnetic interference concerning the railway system as a whole is dealt with in EN 50121-2.
77 These specific provisions are to be used in conjunction with the general provisions in EN 50121-1.
78 2 Normative references
79 The following documents are referred to in the text in such a way that some or all of their content
80 constitutes requirements of this document. For dated references, only the edition cited applies. For
81 undated references, the latest edition of the referenced document (including any amendments) applies.
82 EN 50121-1:2017, Railway applications - Electromagnetic compatibility - Part 1: General
83 EN 50121-2:2017, Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole
84 railway system to the outside world
85 EN 50121-3-2:2020, Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock -
86 Apparatus
87 EN IEC 55016-1-1:2019, Specification for radio disturbance and immunity measuring apparatus and
88 methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus
89 (CISPR 16-1-1:2019)
oSIST prEN 50121-3-1:2021
prEN 50121-3-1:2021 (E)
90 3 Terms, definitions and abbreviations
91 3.1 Terms and definitions
92 For the purposes of this document, the following terms and definitions apply.
93 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
94 — ISO Online browsing platform: available at https://www.iso.org/obp
95 — IEC Electropedia: available at http://www.electropedia.org/
96 3.1.1
97 traction stock
98 electric and diesel locomotive, high speed trainset, elementary fixed combination of traction stock and
99 hauled stock, electric and diesel multiple unit (no locomotive, distributed traction equipment), Light
100 Railway Vehicle (LRV) such as tram, trolley bus or any other electrical vehicle for urban mass transit,
101 underground trainset
102 3.1.2
103 hauled stock
104 independent passenger coaches and freight wagons (if they contain electric apparatus such as
105 freezing equipment) which may be hauled in random combinations by different types of locomotives
106 3.1.3
107 main line vehicle
108 vehicle such as high speed train, suburban train, freight train, mainly designed to operate between
109 cities
110 3.1.4
111 urban vehicle
112 vehicle such as underground trainset, tram, LRV (Light Rail Vehicle), trolleybus, mainly designed to
113 operate within the boundary of a city
114 3.2 Abbreviations
AC Alternating current
bw Band width
DC Direct current
E Electric (field)
EMC Electromagnetic compatibility
EUT Equipment under test
H Magnetic (field)
ISDN Integrated Services Digital Network
ITU-T International Telegraph Union – Telecommunication Standardization Sector
LRV Light Rail Vehicle
PCM Pulse – code modulation
QC Quadrant converters
QP Quasi-Peak
xDSL all types of digital subscriber lines
oSIST prEN 50121-3-1:2021
prEN 50121-3-1:2021 (E)
115 4 Applicability
116 Generally, it is not possible to test electromagnetic compatibility invoking every function of the rolling
117 stock. The tests shall be made at typical operating modes considered to produce the largest emission.
118 The typical operating mode shall require all systems to be energised which are normally in continuous
119 operation during service. It is not necessary during the test to exercise systems which operate
120 transiently such as for example operation of internal doors, although they should be energised. It is not
121 necessary to test degraded modes of operation.
122 The configuration and mode of operation shall be specified in the test plan and the actual conditions
123 during the tests shall be precisely noted in the test report.
124 Basically, all apparatus to be integrated into a vehicle meet the requirements of EN 50121-3-2. In
125 exceptional cases, where apparatus meets another EMC Standard, but full compliance with
126 EN 50121-3-2 is not demonstrated, EMC is ensured by adequate integration measures of the
127 apparatus into the vehicle system and/or by an appropriate EMC analysis and test which justifies
128 deviating from EN 50121-3-2.
129 The frequency range considered is from 0 Hz (DC) to 400 GHz. No measurements need to be
130 performed at frequencies where no requirement is specified.
131 5 Immunity requirements
132 No tests are applied to the complete vehicle. It is expected that the assembly of the apparatus into a
133 complete vehicle will give adequate immunity, provided that an EMC plan has been prepared and
134 implemented, taking into account the requirements in EN 50121-3-2.
135 6 Emission tests and limits
136 6.1 General
137 The emission tests and limits for rolling stock in this standard should ensure as far as possible that the
138 rolling stock does not interfere with typical installations in the vicinity of the railway system.
139 Measurements shall be performed in well-defined and reproducible conditions. It is not possible to
140 totally separate the effects of the railway system and the stock under test. For radiated emissions, the
141 test conditions are defined in 6.3.1 and 6.3.2.
142 NOTE 1 Signalling and communication, train radio and other railway systems (axle counters, track circuits,
143 train control systems, etc.) are different in every country in terms of operating frequencies and waveforms.
144 Therefore, compatibility requirements are specified according to the type of signalling and communication
145 systems used (see e.g. EN 50238 series).
146 NOTE 2 There may be cases in which radio or other railway external services with working frequencies below
147 150 kHz are in operation close to the railway. The EMC management plan covers these cases and an adequate
148 level of emission from the railway on these working frequencies may be found in the values given in informative
149 Annex C hence no guarantee can be given for an undisturbed operation.
150 6.2 Interference on outside party telecommunication lines
151 6.2.1 Digital telecommunication lines
152 Interference with digital systems such as PCM, ISDN, xDSL are not covered in this European
153 Standard.
154 It should be noted that these systems operate in a higher frequency range using multiple carriers and
155 various automatic error correction protocols.
156 It is considered unlikely that rolling stock can produce sufficient interference in this frequency range.
oSIST prEN 50121-3-1:2021
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157 6.2.2 Analogue telecommunication lines
158 No harmonized limits apply.
159 Information about interference on telecommunication lines can be found in Annex A.
160 6.3 Radiated electromagnetic disturbances
161 6.3.1 Test site
162 It can be assumed, that measurements will not take place in laboratory conditions. Trees, walls,
163 bridges, tunnels or other conductive objects in the vicinity of the measurement antenna could have an
164 impact on the measurement. Other railway vehicles operating in the same feeding section or nearby
165 the measuring point may affect the measurement result. Overhead/third rail discontinuities as well as
166 substations, power lines, buried lines, transformers, neutral sections, section insulators etc. close to
167 the measuring point may cause additional variations.
168 These influences shall be reduced as far as practical but in any case no obstacles above rail level
169 which may influence the measurements shall be located between antenna and EUT.
170 The overhead/third rail should be a continuous line as far as practical on both sides of the
171 measurement point (typically at least 200 m).
172 Since it is impossible to avoid the support masts of the overhead, the measurement point shall be at
173 the midpoint between masts, on the opposite side of the track (in case of a double track, on the side of
174 the track which is being used). If the railway system is powered by a third rail, the antenna shall be on
175 the same side of the track (worst case).
176 Since resonances may occur in the overhead line at radio-frequencies, it may be necessary to change
177 the test site. The exact location of the test site and features of both the site and the overhead system
178 layout shall be noted.
179 The contribution of the substation may be considered when assessing the emissions from the vehicle.
180 Note that the contribution of a DC substation depends on its load current and will not be measured
181 properly in a no-load condition.
182 At the beginning and at the end of the test series the ambient noise shall be recorded. This
183 measurement shall be done without any influence of the vehicle.
184 If at specific frequencies or in specific frequency ranges the ambient noise is higher than the limit
185 values less 6 dB, the measurements at these frequencies need not be considered. These frequencies
186 shall be noted in the test report.
187 NOTE It may be helpful to perform this ambient noise measurement also with the vehicle completely
188 powered down in front of the antenna.
189 6.3.2 Test conditions
190 The tests shall cover the operation of all systems onboard the rolling stock which may produce radiated
191 emissions.
192 Hauled stock (a representative version) shall be tested while stationary in an energ
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