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SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN IEC 60794-1-31:2018
Optični kabli - 1-31. del: Splošna specifikacija - Elementi optičnih kablov - Optično
vlakno (IEC 60794-1-31:2021)
Optical fibre cables - Part 1-31: Generic specification - Optical cable elements - Optical
fibre ribbon (IEC 60794-1-31:2021)
Lichtwellenleiterkabel - Teil 1-31: Fachgrundspezifikation - LWL-Kabelelemente - LWL-
Bandkabel (IEC 60794-1-31:2021)
Câbles à fibres optiques - Partie 1-31: Spécification intermédiaire pour éléments de
câbles - Rubans de fibres optiques (IEC 60794-1-31:2021)
Ta slovenski standard je istoveten z: EN IEC 60794-1-31:2021
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60794-1-31
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 33.180.10; 33.180.99 Supersedes EN IEC 60794-1-31:2018 and all of its
amendments and corrigenda (if any)
English Version
Optical fibre cables - Part 1-31: Generic specification - Optical
cable elements - Optical fibre ribbon
(IEC 60794-1-31:2021)
Câbles à fibres optiques - Partie 1-31: Spécification Lichtwellenleiterkabel - Teil 1-31: Fachgrundspezifikation -
générique - Éléments de câbles optiques - Rubans de fibres LWL-Kabelelemente - LWL-Bandkabel
optiques (IEC 60794-1-31:2021)
(IEC 60794-1-31:2021)
This European Standard was approved by CENELEC on 2021-08-02. 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, 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.
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.
Ref. No. EN IEC 60794-1-31:2021 E
European foreword
The text of document 86A/2071/CDV, future edition 2 of IEC 60794-1-31, prepared by SC 86A “Fibres
and cables” of IEC/TC 86 “Fibre optics” was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60794-1-31:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–05–02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–08–02
document have to be withdrawn
This document supersedes EN IEC 60794-1-31:2018 and all of its amendments and corrigenda (if
any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60794-1-31:2021 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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 dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-2-10 - Optical fibres - Part 2–10: Product EN IEC 60793-2-10 -
specifications - Sectional specification for
category A1 multimode fibres
IEC 60793-2-50 - Optical fibres - Part 2–50: Product EN IEC 60793-2-50 -
specifications - Sectional specification for
class B single-mode fibres
IEC 60794-1-1 - Optical fibre cables - Part 1–1: Generic EN 60794-1-1 -
specification - General
IEC 60794-1-23 - Optical fibre cables - Part 1–23: Generic EN IEC 60794-1-23 -
specification - Basic optical cable test
procedures - Cable element test methods
IEC 60794-2 - Optical fibre cables - Part 2: Indoor cables EN 60794-2 -
- Sectional specification
IEC 60794-3 - Optical fibre cables - Part 3: Outdoor EN 60794-3 -
cables - Sectional specification
IEC 60794-4 - Optical fibre cables - Part 4: Aerial optical EN IEC 60794-4 -
cables along electrical power lines -
Sectional specification
IEC 60794-5 - Optical fibre cables - Part 5: Microduct EN 60794-5 -
cabling for installation by blowing -
Sectional specification
IEC 60794-6 - Optical fibre cables - Part 6: Indoor/outdoor EN IEC 60794-6 -
cables - Sectional specification
IEC 60794-1-31
Edition 2.0 2021-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 1-31: Generic specification – Optical cable elements – Optical fibre ribbon
Câbles à fibres optiques –
Partie 1-31: Spécification générique – Éléments de câbles optiques – Rubans
de fibres optiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10; 33.180.99 ISBN 978-2-8322-9944-9
– 2 – IEC 60794-1-31:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and abbreviated terms . 5
4 Requirements . 6
4.1 General . 6
4.2 Construction . 6
4.2.1 Ribbon structure . 6
4.2.2 Optical fibres . 7
4.3 Dimensions . 7
4.4 Mechanical requirements . 10
4.4.1 General . 10
4.4.2 Separability of individual fibres from a ribbon . 11
4.4.3 Ribbon stripping . 11
4.4.4 Torsion . 11
4.5 Identification of the ribbon . 11
Annex A (informative) Fibre identification . 12
A.1 Identification by positional identification . 12
A.2 Identification by ribbon coding and fibre colouring . 13
Bibliography . 14
Figure 1 – Cross-section of a typical edge-bonded ribbon (thinner ribbon) . 6
Figure 2 – Cross-section of a typical encapsulated ribbon (thicker ribbon) . 7
Figure 3 – Overview of a typical partially-bonded ribbon . 7
Figure 4 – Example of cross-sectional drawing illustrating fibre ribbon geometry (four-
fibre ribbon) . 10
Figure A.1 – Example of identification by means of colour coding and positioning . 12
Table 1 – Maximum dimensions of optical fibre ribbons for typical 250 µm coating
diameter fibre . 8
Table 2 – Maximum dimensions of optical fibre ribbons for typical 200 µm coating
diameter fibre . 9
IEC 60794-1-31:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-31: Generic specification – Optical cable elements –
Optical fibre ribbon
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 60794-1-31 has been prepared by subcommittee SC86A: Fibres and cables, of IEC
tec
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