SIST EN IEC 60794-1-31:2021

Optical fibre cables - Part 1-31: Generic specification - Optical cable elements - Optical fibre ribbon (IEC 60794-1-31:2021)

This part of IEC 60794, which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, IEC 60794-4 for self-supporting overhead use, IEC60794-5 for air blown use and IEC60794-6 for indoor/outdoor use. Detailed specification can be verified in documents of specification for each application such as IEC 60794-2 and IEC 60794-3.

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)

IEC 60794-1-31:2021 est disponible sous forme de IEC 60794-1-31:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

IEC 60794-1-31:2021 qui est une spécification générique, s’applique aux rubans de fibres optiques. Les exigences qui sont décrites dans la présente partie s’appliquent aux câbles à rubans de fibres optiques destinés à être utilisés dans les équipements de télécommunications et les dispositifs utilisant des techniques analogues, en particulier les câbles à fibres optiques de l’IEC 60794-2 pour une utilisation à l’intérieur, de l’IEC 60794-3 pour une utilisation à l’extérieur, de l’IEC 60794-4 pour une utilisation aérienne autoporteuse, de l’IEC 60794-5 pour une utilisation soufflée et de l’IEC 60794-6 pour une utilisation à l’extérieur/l’intérieur. La spécification particulière peut être vérifiée dans les spécifications pour chaque application comme l’IEC 60794-2 et l’IEC 60794-3. Cette seconde édition annule et remplace la première édition, publiée en 2018. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- Les exigences géométriques pour les rubans de fibres optiques ayant généralement un diamètre de revêtement de 250 µm ont été modifiées et celles pour le ruban de fibres optiques ayant généralement un diamètre de revêtement de 200 µm ont été ajoutées.
- Les paragraphes "Identification selon le positionnement" et "Identification par codage du ruban et coloration des fibres" ont été déplacés dans une nouvelle Annexe A informative.

Optični kabli - 1-31. del: Splošna specifikacija - Elementi optičnih kablov - Optično vlakno (IEC 60794-1-31:2021)

General Information

• Status: Published
• Publication Date: 07-Sep-2021
• ICS: 33.180.10 - Fibres and cables
• ICS: 33.180.99 - Other fibre optic equipment
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Sep-2021
• Due Date: 08-Nov-2021
• Completion Date: 08-Sep-2021
• Ref Project: EN IEC 60794-1-31:2021 - Optical fibre cables - Part 1-31: Generic specification - Optical cable elements - Optical fibre ribbon

Relations

• Replaces: SIST EN IEC 60794-1-31:2018 - Optical fibre cables - Part 1-31: Generic specification - Optical cable elements - Optical fibre ribbon (IEC 60794-1-31:2018)
• Effective Date: 31-Aug-2021

Overview

EN IEC 60794-1-31:2021 is the Part 1‑31 generic specification for optical cable elements - optical fibre ribbon. It defines the essential requirements, geometry and mechanical characteristics of optical fibre ribbons used in telecommunications and related equipment. This 2021 edition (Edition 2.0) supersedes the 2018 edition and updates ribbon geometrical requirements (including typical 250 µm and newly added 200 µm coating diameters) and identification guidance.

Key Topics and Requirements

• Scope and applicability: Generic requirements for optical fibre ribbons used in ribbon-based cables for indoor, outdoor, aerial, microduct (air-blown) and indoor/outdoor applications.
• Ribbon construction: Descriptions of common ribbon types (edge‑bonded/thinner ribbons, encapsulated/thicker ribbons, partially‑bonded ribbons) and their expected structure.
• Optical fibres: References to fibre product specifications (e.g., IEC 60793 series) for single‑mode and multimode fibres contained in ribbons.
• Dimensions and geometry: Maximum ribbon dimensions and fibre spacing are specified for typical coating diameters (250 µm and 200 µm). (See published tables in the standard.)
• Mechanical requirements:
  • Separability of individual fibres from a ribbon
  • Ribbon stripping procedures and expected performance
  • Torsion and other mechanical behaviors under specified loads
• Identification: Fibre identification methods including positional identification, ribbon coding and fibre colouring. These identification methods are provided in the informative Annex A.
• Test references: Testing and cable element test methods are linked to IEC 60794‑1‑23 and related test procedures.

Applications and Who Uses This Standard

• Cable manufacturers designing and producing ribbon fibre elements for telecom and data centre cabling.
• Systems integrators and network designers specifying ribbon cable performance for high‑density deployments.
• Test laboratories and QA teams performing verification and acceptance testing of ribbon elements.
• Telecom operators and installers selecting ribbon cable types for indoor/outdoor, aerial, microduct and air‑blown installations.
• Standards bodies and procurement teams using the standard to harmonize product specifications and contracts.

Related Standards

• IEC/EN IEC 60794-1-1 - Generic specification - General
• IEC/EN IEC 60794-1-23 - Cable element test methods
• IEC 60794-2 / -3 / -4 / -5 / -6 - Sectional specifications for indoor, outdoor, aerial, microduct (air‑blown) and indoor/outdoor cables
• IEC 60793-2-10 / 2-50 - Optical fibre product specifications

EN IEC 60794-1-31:2021 is essential for anyone specifying, manufacturing or testing optical fibre ribbon elements and for ensuring compatibility across ribbon cable applications in modern telecommunications networks.

Standards Content (Sample)

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,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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6) All users should ensure that they have the latest edition of this publication.
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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
technical committee 86: Fibre optics. It is an International Standard.
This second edition cancels and replaces the first edition published in 2018. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) The geometrical requirements for optical fibre ribbon with typically 250 µm coating diameter
have been modified and those for the optical fibre ribbon with typically 200 µm coating
diameter have been added.
b) "Identification by positional identification" and "Identification by ribbon coding and fibre
colouring" are moved to a new informative Annex A.

– 4 – IEC 60794-1-31:2021 © IEC 2021
The text of this International Standard is based on the following documents:
CDV Report on voting
86A/2071/CDV 86A/2109/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• a
...