IEC 60794-3-12:2012

Optical fibre cables - Part 3-12: Outdoor cables - Detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling

IEC 60794-3-12:2012 is a detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling to ensure compatibility with ISO/IEC 11801 and ISO/IEC 24702. Those standards have requirements to ensure that models work for generic cabling and system performances. Values in this standard support these models. This second edition cancels and replaces the first edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- reference to ISO/IEC 24702;
- reference to Fibre B6 (IEC 60793-2-50);
- reference to Fibre A1a.3 (IEC 60793-2-10);
- reference to the OS2 Fibre as defined by ISO/IEC 11801;
- reference to the OM4 Fibre as defined by ISO/IEC 11801. Keywords: buried optical telecommunication cables, ISO/IEC 11801 and ISO/IEC 24702
This publication is to be read in conjunction with IEC 60794-1-1:2011, IEC 60794-1-2:2003 and IEC 60794-3-10:2009.

Câbles à fibres optiques - Partie 3-12: Câbles extérieurs - Spécification particulière pour les câbles optiques de télécommunication destinés à être installés dans des conduites ou à être directement enterrés et utilisés dans le câblage de locaux

La CEI 60794-3-12:2012 est une spécification particulière de câbles optiques de télécommunication destinés à être installés dans des conduites ou à être directement enterrés et utilisés dans les câblages de sites. Le but est d'assurer la compatibilité avec l'ISO/CEI 11801 et l'ISO/CEI 24702. Ces normes contiennent des exigences destinées à assurer le fonctionnement des modèles concernant le câblage générique et les performances du système. Les valeurs indiquées dans la présente norme sont compatibles avec ces modèles. Cette seconde édition annule et remplace la première édition, publiée en 2005. La présente édition constitue une révision technique. La présente édition intègre les modifications techniques significatives suivantes par rapport à l'édition précédente:
- référence à l'ISO/CEI 24702;
- référence aux fibres de catégorie B6 (CEI 60793-2-50);
- référence aux fibres de catégorie A1a.3 (CEI 60793-2-10);
- référence à la catégorie de fibre OS2 tel que défini par l'ISO/CEI 11801;
- référence à la catégorie de fibre OM4 tel que défini par l'ISO/CEI 11801. Mots clés: câbles optiques de télécommunication enterrés, ISO/CEI 11801 et l'ISO/CEI 24702
Cette publication doit être lue conjointement avec la , la CEI 60794-1-2:2003 et CEI 60794-3-10:2009>

General Information

• Status: Published
• Publication Date: 11-Dec-2012
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: SC 86A - Fibres and cables
• Current Stage: DELPUB - Deleted Publication
• Start Date: 27-Jan-2021
• Completion Date: 31-Jan-2020

Relations

• Revises: IEC 60794-3-12:2005 - Optical fibre cables - Part 3-12: Outdoor cables - Detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling
• Effective Date: 05-Sep-2023
• Revised: IEC 60794-3-12:2021 - Optical fibre cables - Part 3-12: Outdoor cables - Detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60794-3-12 ®
Edition 2.0 2012-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-12: Outdoor cables – Detailed specification for duct and directly buried
optical telecommunication cables for use in premises cabling

Câbles à fibres optiques –
Partie 3-12: Câbles extérieurs – Spécification particulière pour les câbles
optiques de télécommunication destinés à être installés dans des conduites ou
à être directement enterrés et utilisés dans le câblage de locaux

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IEC 60794-3-12 ®
Edition 2.0 2012-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-12: Outdoor cables – Detailed specification for duct and directly buried

optical telecommunication cables for use in premises cabling

Câbles à fibres optiques –
Partie 3-12: Câbles extérieurs – Spécification particulière pour les câbles

optiques de télécommunication destinés à être installés dans des conduites ou

à être directement enterrés et utilisés dans le câblage de locaux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX J
ICS 33.180.10 ISBN 978-2-83220-509-9

– 2 – 60794-3-12 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 General requirements . 6
4 Particular requirements . 6
4.1 General . 6
4.2 MICE (mechanical, ingress, climatic and chemical and electromagnetic)
characteristics . 6
4.3 Transmission requirements. 7
4.3.1 Attenuation of cabled fibre . 7
4.3.2 Fibre bandwidth requirements . 7
4.3.3 Polarization mode dispersion (PMD) requirements . 8
Bibliography . 9

Table 1 – Multimode maximum cable attenuation coefficient (dB/km) . 7
Table 2 – Single-mode maximum cable attenuation coefficient (dB/km) . 7
Table 3 – Minimum multimode fibre bandwidth (MHz × km) . 8

60794-3-12 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-12: Outdoor cables –
Detailed specification for duct and directly buried optical
telecommunication cables for use in premises cabling

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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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.
International Standard IEC 60794-3-12 has been prepared by subcommittee SC 86A: Fibres
and cables, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2005. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– reference to ISO/IEC 24702;
– reference to Fibre B6 (IEC 60793-2-50);
– reference to Fibre A1a.3 (IEC 60793-2-10);
– reference to the OS2 Fibre as defined by ISO/IEC 11801;
– reference to the OM4 Fibre as defined by ISO/IEC 11801.

– 4 – 60794-3-12 © IEC:2012
This International Standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2
and IEC 60794-3-10.
The text of this standard is based on the following documents:
FDIS Report on voting
86A/1471/FDIS 86A/1486/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of 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 publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
60794-3-12 © IEC:2012 – 5 –
OPTICAL FIBRE CABLES –
Part 3-12: Outdoor cables –
Detailed specification for duct and directly buried optical
telecommunication cables for use in premises cabling

1 Scope
This part of IEC 60794 is a detailed specification for duct and directly buried optical
telecommunication cables for use in premises cabling to ensure compatibility with
ISO/IEC 11801 and ISO/IEC 24702. Those standards have requirements to ensure that
models work for generic cabling and system performances. Values in this standard support
these models.
The requirements of the family specification IEC 60794-3-10 are applicable to cables covered
by this standard. Particular requirements detailed in Clause 4 of this standard either define a
specific option relative to the requirements of IEC 60794-3-10 or define additional
requirements.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
NOTE These references complete the normative references already listed in the generic specifications
IEC 60794-1-1 and IEC 60794-1-2, in the sectional specification IEC 60794-3 and in the family specification
IEC 60794-3-10.
IEC 60793-2-10:2011, Optical fibres − Part 2-10: Product specifications − Sectional
specification for category A1 multimode fibres
IEC 60793-2-50:2012, Optical fibres − Part 2-50: Product specifications − Sectional
specification for class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – Cross reference table
for optical cable test procedures
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Cross reference table
for optical cable test procedures
IEC 60794-3, Optical fibre cables − Part 3: Sectional specification – Outdoor cables
IEC 60794-3-10, Optical fibre cables − Part 3-10: Outdoor cables − Family specification for
duct, directly buried and lashed aerial optical telecommunication cables
ISO/IEC 11801, Information technology − Generic cabling for customer premises
___________
IEC 60794-1-2:2003, Second edition has been withdrawn. A third edition, with the revised title Optical fibre
cables - Part 1-2: Generic specification - Cross reference table for optical cable test procedures, is currently in
preparation.
– 6 – 60794-3-12 © IEC:2012
ISO/IEC 24702, Information technology − Generic cabling – Industrial premises
3 General requirements
The cable shall comply with the family specification, IEC 60794-3-10, and meet the
requirements which are defined in it, including requirements in the sectional specification,
60794-3. Particular requirements detailed in Clause 4 are optional, relative to the
requirements of IEC 60794-3-10, or define additional requirements.
The optical fibre contained in cables covered by this standard shall comply with one of the
following standards, and meet the normative requirements defined within them as applicable:
– IEC 60793-2-50:2008, Annex A (Single-mode fibre category B1.1);
– IEC 60793-2-50:2008, Annex C (Single-mode fibre category B1.3) ;
– IEC 60793-2-50:2008, Annex G (Single-mode fibre sub-categories B6 a1 and B6 a2)
– IEC 60793-2-10:2011, Annex A (Multimode fibre sub-category A1a, 50 µm core
diameter);
– IEC 60793-2-10:2011, Annex B (Multimode fibre sub-category A1b, 62,5 µm core
diameter).
To ensure compatibility with ISO/IEC 11801 and ISO/IEC 24702, optical performance level
requirements are presented in terms of the performance classification codes as follows:
– OS1 Single-mode fibre categories B1.1, B1.3 or sub-categories B6 a1, B6 a2;
– OS2 Single-mode fibre category B1.3 or sub-categories B6 a1, B6 a2;
– OM1 Multimode fibre sub-categories A1a, A1b;
– OM2 Multimode fibre sub-categories A1a, A1b;
– OM3 Multimode fibre model A1a.2;
– OM4 Multimode fibre model A1a.3.
NOTE These codes are informative from the perspective of the requirements defined in this detailed specification.
4 Particular requirements
4.1 General
These requirements either define a specific option relative to the requirements of
IEC 60794-3-10 or define additional requirements.
4.2 MICE (mechanical, ingress, climatic and chemical and electromagnetic)
characteristics
Cables intended for installation in conformity with ISO/IEC 24702,and related standards, may
require the specification of additional tests to ensure their suitability in the applicable
environments defined by the mechanical, ingress, climatic and chemical and electromagnetic
(MICE) classification. Such tests are outside the scope of IEC 60794 cable specifications, and
MICE criteria are not part of the requirements for IEC 60794 specifications. The MICE tests
may be the same as, similar to, or substantially different from, the tests required by
IEC 60794 specifications. Cables manufactured per IEC 60794 specifications may or may not
meet the MICE criteria. For supplemental discussion see IEC/TR 62362 [1] .
___________
Numbers in square brackets refer to the Bibliography.

60794-3-12 © IEC:2012 – 7 –
4.3 Transmission requirements
4.3.1 Attenuation of cabled fibre
Depending on the fibre type, the attenuation coefficient of the cabled fibre shall be less than
the maximum values in Table 1 for multimode fibres, and less than the maximum values in
Table 2 for single-mode fibres, for the wavelengths as stated in Tables 1 and 2.
The fibre category, sub-category or model as applicable shall be agreed between customer
and supplier.
Table 1 – Multimode maximum cable attenuation coefficient (dB/km)
Fibre Attenuation Attenuation Performance code
coefficient at coefficient at
850 nm 1 300 nm
IEC 60793-2-10:2011, A1a.1 3,5 1,5 OM1, OM2
IEC 60793-2-10:2011, A1a.2 3,5 1,5 OM1, OM2, OM3
IEC 60793-2-10:2011, A1a.3 3,5 1,5 OM1, OM2, OM3, OM4
IEC 60793-2-10:2011, A1b 3,5 1,5 OM1, OM2

Table 2 – Single-mode maximum cable attenuation coefficient (dB/km)
Fibre Wavelengths
...