EN ISO 22074-5:2024

SLOVENSKI STANDARD
01-maj-2024
Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 5. del: Preskusna metoda
za električno upornost (ISO 22074-5:2021)
Railway infrastructure - Rail fastening systems - Part 5: Test method for electrical
resistance (ISO 22074-5:2021)
Bahninfrastruktur - Schienenbefestigungssysteme - Teil 5: Prüfverfahren zur Ermittlung
des elektrischen Widerstands (ISO 22074-5:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 5: Méthode d'essai pour la
détermination de résistance électrique (ISO 22074-5:2021)
Ta slovenski standard je istoveten z: EN ISO 22074-5:2024
ICS:
45.080 Tračnice in železniški deli Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22074-5
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 45.080
English Version
Railway infrastructure - Rail fastening systems - Part 5:
Test method for electrical resistance (ISO 22074-5:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail Bahninfrastruktur - Schienenbefestigungssysteme -
- Partie 5: Méthode d'essai pour la détermination de Teil 5: Prüfverfahren zur Ermittlung des elektrischen
résistance électrique (ISO 22074-5:2021) Widerstands (ISO 22074-5:2021)
This European Standard was approved by CEN on 23 March 2024.

CEN 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 CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22074-5:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 22074-5:2021 has been prepared by Technical Committee ISO/TC 269 “Railway
applications” of the International Organization for Standardization (ISO) and has been taken over as
which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2024, and conflicting national standards
shall be withdrawn at the latest by September 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 22074-5:2021 has been approved by CEN as EN ISO 22074-5:2024 without any
modification.
INTERNATIONAL ISO
STANDARD 22074-5
First edition
2021-05
Railway infrastructure — Rail
fastening systems —
Part 5:
Test method for electrical resistance
Infrastructure ferroviaire — Systèmes de fixation du rail —
Partie 5: Méthode d'essai pour la détermination de résistance
électrique
Reference number
ISO 22074-5:2021(E)
©
ISO 2021
ISO 22074-5:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 22074-5:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 1
5 Principle . 1
6 Apparatus . 2
6.1 Rail . 2
6.2 Water . 2
6.2.1 Standard "wet" conditions. 2
6.2.2 Optional additional test conditions . 2
6.3 Spray equipment . 2
6.4 Electricity supply . 2
6.5 Instruments . 2
6.6 Water collection and re-cycling equipment . 2
7 Test specimens (reference method) . 3
8 Procedure (reference method) . 3
9 Test specimens (alternative method) . 5
10 Procedure (alternative method) . 5
11 Calculations. 5
12 Test report . 6
Bibliography . 7
ISO 22074-5:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 269, Railway applications, Subcommittee
SC 1, Infrastructure.
A list of all parts in the ISO 22074 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

ISO 22074-5:2021(E)
Introduction
This test procedure is used to assess the rail-to-rail electrical resistance relevant to rail fastenings used
in locations where track circuit signalling systems are used.
INTERNATIONAL STANDARD ISO 22074-5:2021(E)
Railway infrastructure — Rail fastening systems —
Part 5:
Test method for electrical resistance
1 Scope
This document specifies a laboratory test procedure for determining the electrical resistance, in wet
conditions, between the running rails provided by a fastening system fitted to a steel or concrete
sleeper, bearer or element of ballastless track.
It is also applicable to embedded rail.
This test procedure applies to a complete fastening assembly. It is relevant to signalling currents, not to
traction currents.
A reference procedure and an alternative procedure are included.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For
...