IEC 60794-3-12:2021

IEC 60794-3-12 ®
Edition 3.0 2021-01
REDLINE VERSION
INTERNATIONAL
STANDARD
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
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IEC 60794-3-12 ®
Edition 3.0 2021-01
REDLINE VERSION
INTERNATIONAL
STANDARD
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

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-9351-5

– 2 – IEC 60794-3-12:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General requirements . 6
5 Particular requirements . 7
5.1 General . 7
5.2 MICE (mechanical, ingress, climatic and chemical and electromagnetic)
characteristics . 7
5.3 Transmission requirements . 7
5.3.1 Attenuation of cabled fibre . 7
5.3.2 Fibre bandwidth requirements . 8
5.3.3 Polarization mode dispersion (PMD) requirements . 9
Bibliography . 10

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

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,
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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
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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.
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rights. IEC shall not be held responsible for identifying any or all such patent rights.

This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60794-3-12:2012. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
– 4 – IEC 60794-3-12:2021 RLV © IEC 2021
IEC 60794-3-12 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is an International Standard.
This third edition cancels and replaces the second edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of references to ISO/IEC 11801-1;
b) removal of references to ISO/IEC 24702;
c) incorporation of the OM5 cabled fibre performance category;
d) incorporation of the OS1a cabled fibre performance category;
e) cabled fibre performance categories OM1, OM2 and OS1 are no longer normative, and are
retained for information.
The text of this International Standard is based on the following documents:
CDV Report on voting
86A/2027/CDV 86A/2064/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.
This International Standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2 and
IEC 60794-3-10.
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 document will remain unchanged until the
stability date indicated on the IEC website under "http://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
• 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.

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 11801-1 and ISO/IEC 24702. Those standards have This document's requirements to
ensure that the ISO/IEC 11801-1 models work for generic cabling and system performances.
Values in this document support these models.
The requirements of the family specification IEC 60794-3-10 are applicable to cables covered
by this document. Particular requirements detailed in Clause 5 either define a specific option
relative to the requirements of IEC 60794-3-10 or define additional requirements.
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 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 60793-2-10:20112019, Optical fibres – Part 2-10: Product specifications – Sectional
specification for category A1 multimode fibres
IEC 60793-2-50:20122018, 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 General
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Cross reference table
for optical cable test procedures Basic optical cable test procedures – General guidance
IEC 60794-3, Optical fibre cables – Part 3: Outdoor cables – Sectional specification
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
ISO/IEC 24702, Information technology − Generic cabling – Industrial 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 – IEC 60794-3-12:2021 RLV © IEC 2021
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 General requirements
The cable shall comply with the family sp
...