IEC 60794-2-22:2016

IEC 60794-2-22 ®
Edition 1.0 2016-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 2-22: Indoor cables – Detail specification for multi-simplex breakout optical
cables to be terminated with connectors

Câbles à fibres optiques –
Partie 2-22: Câbles intérieurs – Spécification particulière pour câbles optiques
épanouis simplex multiples munis de connecteurs
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IEC 60794-2-22 ®
Edition 1.0 2016-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 2-22: Indoor cables – Detail specification for multi-simplex breakout optical

cables to be terminated with connectors

Câbles à fibres optiques –
Partie 2-22: Câbles intérieurs – Spécification particulière pour câbles optiques

épanouis simplex multiples munis de connecteurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-3793-9

– 2 – IEC 60794-2-22:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Construction . 6
4.1 General . 6
4.2 Optical fibres . 7
4.3 Simplex cables . 7
4.4 Strength and anti-buckling members . 7
4.5 Ripcord . 7
4.6 Cable sheath . 7
4.7 Sheath marking . 7
4.8 Examples of cable constructions . 7
5 Tests . 7
5.1 General . 7
5.2 Dimensions . 8
5.3 Mechanical requirements . 8
5.3.1 General . 8
5.3.2 Cable bend . 8
5.4 Environmental requirements – Temperature cycling . 8
6 Transmission requirements . 9
7 Fire performance . 9
Annex A (normative) Cable sample preparation for bend and temperature cycling test . 10
Annex B (informative) Examples of cable constructions . 11
B.1 Breakout cable with simplex cables . 11
B.2 Breakout cable with subunit containing simplex cables. 11
Bibliography . 12

Figure A.1 – Cable sample preparation and lengths . 10
Figure B.1 – Example of a cross-section of a six-fibre breakout cable . 11
Figure B.2 – Example of a cross-section of a 24-fibre breakout cable . 11

Table 1 – Temperatures . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 2-22: Indoor cables –
Detail specification for multi-simplex breakout
optical cables to be terminated with connectors

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60794-2-22 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86A/1765/FDIS 86A/1773/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 60794-2-22:2016 © IEC 2016
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 "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 2-22: Indoor cables –
Detail specification for multi-simplex breakout
optical cables to be terminated with connectors

1 Scope
This part of IEC 60794 is a detail specification and specifies breakout optical cables with
multiple simplex fibre cables for termination with connectors.
The requirements of the sectional specification IEC 60794-2 are applicable to cables covered
by this document.
The requirements of the family specification IEC 60794-2-20 are applicable to breakout cables
to be installed without terminated connectors.
Fan-out kits used for cable systems are not covered by this document.
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.
IEC 60811-202, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 202: General tests – Measurement of thickness of non-metallic sheath
IEC 60811-203, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 203: General tests – Measurement of overall dimensions
IEC 60793-1-1, Optical fibres – Part 1-1: Measurement methods and test procedures –
General and guidance
IEC 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures –
Fibre geometry
IEC 60793-1-21, Optical fibres – Part 1-21: Measurement methods and test procedures –
Coating geometry
IEC 60793-2, Optical fibres – Part 2: Product specifications – General
IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
category A1 multimode fibres
IEC 60793-2-50, 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 – General

– 6 – IEC 60794-2-22:2016 © IEC 2016
IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable
test procedures – Mechanical tests methods
IEC 60794-1-22, Optical fibre cables – Part 1-22: Generic specification – Basic optical cable
test procedures – Environmental test methods
IEC 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification
IEC 60794-2-20, Optical fibre cables – Part 2-20: Indoor cables – Family specification for
multi-fibre optical cables
IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for
simplex and duplex cables for use in terminated cable assemblies
IEC 60794-2-51, Optical fibre cables – Part 2-51: Indoor cables – Detail specification for
simplex and duplex cables for use in cords for controlled environment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60794-1-1 and the
following apply.
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
3.1
breakout cable
cable consisting of multiple simplex fibre cables, stranded together under a common sheath,
which may be stranded in one layer or multi-layers or bundled to subunits around a central
member as necessary
3.2
simplex fibre cable
cable including a secondary coated fibre that is surrounded with either metallic or non-metallic
strength members within a sheath of suitable material
4 Construction
4.1 General
In addition to the constructional requirements in IEC 60794-2 and IEC 60794-2-20, the
following considerations apply to multi-simplex breakout cables for use in terminated breakout
cable assemblies.
It is not the intention of this document to specify the finished terminated breakout cable
assembly complete with terminations.
There shall be no fibre splice in any delivery length. It shall be possible to identify each
individual fibre throughout the length of the cable.

4.2 Optical fibres
Multi-mode or single-mode optical fibres meeting the requirements of IEC 60793-2-10 sub-
categories A1a and A1b and IEC 60793-2-50 class B shall be used. Other fibre types may be
used if agreed upon between the customer and the supplier. In this case, the mechanical and
environmental requirements shall be agreed upon between the customer and the supplier.
4.3 Simplex cables
The simplex cables shall meet the requirements of the family specification IEC 60794-2-50
and the detail specification IEC 60794-2-51.
4.4 Strength and anti-buckling members
The cable shall be designed with enough strength members to meet installation and service
conditions so that the fibres are not subjected to strain in excess of the limits agreed upon
between the customer and the supplier.
The strength and/or anti-buckling members may be either metallic or non-metallic and may be
located in the cable core and/or under the sheath and/or in the sheath.
4.5 Ripcord
If required, a ripcord may be provided beneath the cable sheath. The functionality of the
ripcord shall be tested according to IEC 60794-1-21, Method E25.
4.6 Cable sheath
The cable shall have an overall protective sheath. The cable diameter shall be specified in the
relevant detail specification (or product specification).
4.7 Sheath marking
If required, the cable shall be marked as agreed upon between the customer and the supplier.
4.8 Examples of cable constructions
Examples of some main types of cable construction are shown in Figure B.1 and Figure B.2.
Other configurations (e.g. multi-layer constructions) are not precluded if they meet the
mechanical, environmental and transmission requirements given in this document.
5 Tests
5.1 General
Compliance with the specification requirements shall be verified by carrying out tests selected
from the following subclauses. It is not intended that all tests be carried out in all cases. The
tests to be applied and the frequency of testing shall be agreed upon between the customer
and the supplier.
Single-mode cables shall be measured at 1 550 nm and multi-mode cables at 1 300 nm.
Measurement at other wavelengths may be agreed upon between the customer and the
supplier.
If cable loops are used within a test to fix the ends of a cable, the loop diameter shall be
equal or greater than the specified minimum cable bend diameter to avoid cable damage and
excessive mode filtering in multi-mode fibre.

– 8 – IEC 60794-2-22:2016 © IEC 2016
Unless otherwise specified, all tests shall be carried out at ambient temperature, as described
in IEC 60793-1-1.
The following tests can be performed on a short sample length of cable which is still a part of
a longer length. Thus, it becomes possible to detect permanent changes in attenuation. The
measuring wavelength and maximum value of the attenuation change for longer lengths shall
be agreed upon between the customer and the supplier.
5.2 Dimensions
The fibre dimensions and tolerances shall be verified in accordance with IEC 60793-1-20
method B or IEC 60793-1-21. The diameter of the buffer and of the cable, as well as the
thickness of the sheath, shall be measured in accordance with the methods of IEC 60811-202
and IEC 60811-203.
5.3 Mechanical requirements
5.3.1 General
The cable shall fulfil the mechanical requirements of tensile, crush, impact and repeated
bending according to IEC 60794-2-20. The exceptions to IEC 60794-2-20 are defined in the
following clauses.
5.3.2 Cable bend
Method: IEC 60794-1-21, E11A (helix method)
Mandrel diameter: 20 times cable diameter
Number of turns per helix: 6
Number of cycles: 10
Cable sample: See Annex A for details
Prior to bending: At both ends of the sample, all the components of each simplex
cable shall be fixed together e.g. with loops or glue. The
simplex cables shall not be fixed to the cable sheath and to
each other. See Annex A.
Bend location: The section in the middle of the breakout cable length shall be
bent.
Requirements for cabled
Maximum attenuation change during the test ≤ 0,20 dB. No
single-mode fibres:
change in attenuation after the test.
Requirements for cabled Maximum attenuation change during the test ≤ 0,4 dB. No
multi-mode fibres:
change in attenuation after the test.
5.4 Environmental requirements – Temperature cycling
Method: IEC 60794-1-22, F12
Table 1 – Temperatures
a
Category Low temperature T High temperature T
A B
°C °C
C -10 +60
U -25
+70
O -40
+75
a
The acronyms for the categories are according to IEC 61753-1. A suitable category should be selected
according to the application. Category C, for example, is for the appropriate implementation of
ISO/IEC 11801.
Soak time: IEC 60794-1-22, F1
Number of cycles: 6
Cable sample: See Annex A for details
Prior to temperature At both ends of the sample, all the components of each simplex
cycling: cable shall be fixed together e.g. with loops or glue. The
simplex cables shall not be fixed to the cable sheath and to
each other. See Annex A.
Requirements for cabled Maximum attenuation change ≤ 0,50 dB
single-mode fibres:
Requirements for cabled Maximum attenuation change ≤ 0,5 dB
multi-mode fibres:
The maximum increase in attenuation refers to the change of attenuation at the low and high
temperature in relation to the ambient temperature before the test. Other attenuation
requirements may be agreed upon between the customer and the supplier.
6 Transmission requirements
The transmission requirements shall be verified in accordance with IEC 60793-2 and shall be
agreed upon between the customer and the supplier. The maximum cable attenuation shall
comply with IEC 60794-1-1.
7 Fire performance
IEC TR 62222 provides guidance and recommendations for the requirements and test
methods for the fire performance of communication cables when installed in buildings. The
recommendations relate to typical applications and installation practices, and an assessment
of the fire hazards presented. Applicable legislation and regulation are also taken into
account.
IEC TR 62222 references several IEC fire per
...