Optical fibre cables - Part 6-10: Indoor-outdoor cables - Family specification for universal indoor-outdoor cables

IEC 60794-6-10:2020 is a family specification covering features of optical fibre cables applicable to outdoor as well as indoor environments, called "universal indoor-outdoor cables". These cables generally possess the characteristics associated with outdoor cable designs (according to IEC 60794-3, however typically less stringent, and typically "non armoured") having the thermal and mechanical robustness that makes them suitable for use in the outside plant, while simultaneously being flexible enough, compact and lightweight and exhibiting the fire performance required in indoor premises. A typical application is for example the centralized cabling in central office and the premises or local area network where the same cable design is used for the entire length of the cabling link including both the indoor as well as the outdoor portions.

Câbles à fibres optiques - Partie 6-10 : Câbles intérieurs/extérieurs - Spécification de famille pour les câbles intérieurs/extérieurs universels

IEC 60794-6-10:2020 est une spécification de famille qui couvre les fonctionnalités des câbles à fibres optiques destinés aussi bien aux environnements extérieurs qu'aux environnements intérieurs, ci-après désignés "câbles intérieurs/extérieurs universels". Ces câbles possèdent généralement les caractéristiques associées à des conceptions de câbles extérieurs (conformément à l'IEC 60794-3, appliquée cependant habituellement de manière moins rigoureuse, et en général "non armés"), présentant la robustesse thermique et mécanique qui les rend appropriés pour une utilisation dans les environnements d'usine extérieurs, tout en restant suffisamment souples, compacts et légers, et en présentant le comportement au feu exigé à l'intérieur des locaux. Une application type est par exemple la réalisation d'un câblage centralisé dans le bureau central et les locaux ou le réseau local exploitant la même conception de câble sur toute la longueur des liaisons de câblage, englobant les portions en intérieur ainsi que les portions en extérieur.

General Information

Status
Published
Publication Date
28-Sep-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
29-Sep-2020
Ref Project

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IEC 60794-6-10
Edition 1.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 6-10: Indoor-outdoor cables – Family specification for universal
indoor-outdoor cables
Câbles à fibres optiques –
Partie 6-10: Câbles intérieurs/extérieurs – Spécification de famille pour
les câbles intérieurs/extérieurs universels
IEC 60794-6-10:2020-09(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60794-6-10
Edition 1.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 6-10: Indoor-outdoor cables – Family specification for universal
indoor-outdoor cables
Câbles à fibres optiques –
Partie 6-10: Câbles intérieurs/extérieurs – Spécification de famille pour
les câbles intérieurs/extérieurs universels
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-8907-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60794-6-10:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and abbreviated terms ........................................................................ 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Symbols and abbreviated terms .............................................................................. 8

4 General specifications ..................................................................................................... 8

4.1 Optical fibres .......................................................................................................... 8

4.2 Cable elements ....................................................................................................... 8

5 Specifications for universal indoor-outdoor cables – Construction .................................... 8

6 Details of family specifications and test conditions for universal indoor-outdoor

cables.............................................................................................................................. 8

6.1 Applicable tests ...................................................................................................... 8

6.2 Mechanical tests ................................................................................................... 10

6.2.1 General ......................................................................................................... 10

6.2.2 Tensile performance ...................................................................................... 10

6.2.3 Abrasion ........................................................................................................ 11

6.2.4 Crush ............................................................................................................ 11

6.2.5 Impact ........................................................................................................... 11

6.2.6 Repeated bending ......................................................................................... 12

6.2.7 Torsion .......................................................................................................... 12

6.2.8 Bend .............................................................................................................. 12

6.2.9 Bending under tension ................................................................................... 12

6.2.10 Kink ............................................................................................................... 13

6.2.11 Rip cord functional test .................................................................................. 13

6.3 Environmental tests .............................................................................................. 13

6.3.1 Temperature cycling ...................................................................................... 13

6.3.2 Water penetration .......................................................................................... 14

6.3.3 Ageing ........................................................................................................... 14

6.3.4 UV resistance ................................................................................................ 15

6.3.5 Environmental stress cracking ....................................................................... 15

6.3.6 Cable external freezing .................................................................................. 15

6.3.7 Compound flow .............................................................................................. 15

6.3.8 Bleeding and evaporation .............................................................................. 16

6.3.9 Material compatibility ..................................................................................... 16

6.4 Cable element tests .............................................................................................. 16

6.4.1 Ribbon strippability ........................................................................................ 16

6.4.2 Ribbon tear (separability) .............................................................................. 16

6.4.3 Ribbon dimensions and geometry .................................................................. 16

6.4.4 Ribbon torsion ............................................................................................... 17

6.4.5 Ribbon residual twist ..................................................................................... 17

6.4.6 Tube kinking .................................................................................................. 17

6.4.7 Bend test for optical cable elements .............................................................. 17

6.4.8 Stripping force stability of cabled optical fibres .............................................. 17

6.5 Other tests ............................................................................................................ 17

6.5.1 Fire performance ........................................................................................... 17

6.5.2 Electrical continuity of cable metallic elements .............................................. 18

---------------------- Page: 4 ----------------------
IEC 60794-6-10:2020 © IEC 2020 – 3 –

6.5.3 Thickness of non-metallic sheath ................................................................... 18

6.5.4 Overall dimensions ........................................................................................ 18

Annex A (informative) Examples of universal indoor-outdoor cable ...................................... 19

Bibliography .......................................................................................................................... 21

Figure A.1 – Example of a stranded universal indoor-outdoor cable design ........................... 19

Figure A.2 – Example of an universal indoor-outdoor cable with a central tube design .......... 19

Figure A.3 – Mini-breakout universal indoor-outdoor cable design......................................... 19

Figure A.4 – Breakout universal indoor-outdoor cable design ................................................ 20

Table 1 – Tests applicable for mechanical and environmental performance of universal

indoor-outdoor cables ............................................................................................................. 8

Table 2 – Low and high temperatures ................................................................................... 14

---------------------- Page: 5 ----------------------
– 4 – IEC 60794-6-10:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 6-10: Indoor-outdoor cables –
Family specification for universal indoor-outdoor cables
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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

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 Publications.

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 60794-6-10 has been prepared by subcommittee SC 86A: Fibres

and cables, of IEC technical committee 86: Fibre optics.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/2036/FDIS 86A/2050/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.

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.
---------------------- Page: 6 ----------------------
IEC 60794-6-10:2020 © IEC 2020 – 5 –

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.

---------------------- Page: 7 ----------------------
– 6 – IEC 60794-6-10:2020 © IEC 2020
OPTICAL FIBRE CABLES –
Part 6-10: Indoor-outdoor cables –
Family specification for universal indoor-outdoor cables
1 Scope

This part of IEC 60794 is a family specification covering features of optical fibre cables

applicable to outdoor as well as indoor environments, called "universal indoor-outdoor cables".

These cables generally possess the characteristics associated with outdoor cable designs

(according to IEC 60794-3, however typically less stringent, and typically "non armoured")

having the thermal and mechanical robustness that makes them suitable for use in the outside

plant, while simultaneously being flexible enough, compact and lightweight and exhibiting the

fire performance required in indoor premises. A typical application is for example the centralized

cabling in central office and the premises or local area network where the same cable design

is used for the entire length of the cabling link including both the indoor as well as the outdoor

portions.
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 60332-1 (all parts), Tests on electric and optical fibre cables under fire conditions – Part 1:

Test for vertical flame propagation for a single insulated wire or cable

IEC 60332-3 (all parts), Tests on electric and optical fibre cables under fire conditions – Part 3:

Test for vertical flame spread of vertically-mounted bunched wires or cables

IEC 60754-2:2011, Test on gases evolved during combustion of materials from cables – Part 2:

Determination of acidity (by pH measurement) and conductivity
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

IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable

test procedures – Mechanical test methods

IEC 60794-1-22:2017, Optical fibre cables – Part 1-22: Generic specification – Basic optical

cable test procedures – Environmental test methods

IEC 60794-1-23, Optical fibre cables – Part 1-23: Generic specification – Basic optical cable

test procedures – Cable element test methods
---------------------- Page: 8 ----------------------
IEC 60794-6-10:2020 © IEC 2020 – 7 –

IEC 60794-1-24, Optical fibre cables – Part 1-24: Generic specification – Basic optical cable

test procedures – Electrical test methods

IEC 60794-1-31:2018, Optical fibre cables – Part 1-31 : Generic specification – Optical cable

elements – Optical fibre ribbon

IEC 60794-1-215, Optical fibre cables – Part 1-215: Generic specification – Basic optical cable

test procedures – Environmental test methods – Cable external freezing test, Method F15

IEC 60794-2 (all parts), Optical fibre cables – Part 2: Indoor cables

IEC 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification

IEC 60794-3 (all parts), Optical fibre cables – Part 3: Outdoor cables

IEC 60794-3-10:2015, Optical fibre cables – Part 3-10: Outdoor cables – Family specification

for duct, directly buried and lashed aerial optical telecommunication cables

IEC 60794-6:2020, Optical fibre cables – Part 6: Indoor-outdoor cables – Sectional specification

for indoor-outdoor cables

IEC 60811-202:2012, Electric and optical cables – Test methods for non-metallic materials –

Part 202: General tests – Measurement of thickness of non-metallic sheath
IEC 60811-202:2012/AMD1:2017

IEC 60811-203:2012, Electric and optical cables – Test methods for non-metallic materials –

Part 203: General tests – Measurement of overall dimensions

IEC 60811-406, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 406: Miscellaneous tests – Resistance to stress cracking of polyethylene and

polypropylene compounds

IEC 60811-604, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 604: Physical tests – Measurement of absence of corrosive components in filling

compounds

IEC 61034 (all parts), Measurement of smoke density of cables burning under defined

conditions

ISO 4892-2:2013, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-

arc lamps
3 Terms, definitions and abbreviated terms

For the purposes of this document, the terms, definitions and abbreviated terms 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 Terms and definitions
No terms and definitions are listed in this document.
---------------------- Page: 9 ----------------------
– 8 – IEC 60794-6-10:2020 © IEC 2020
3.2 Symbols and abbreviated terms
HFFR halogen free flame retardant
4 General specifications
4.1 Optical fibres

The optical fibre shall conform to the requirements of IEC 60793-2-10 or IEC 60793-2-50. The

fibre type shall be agreed between the customer and supplier. The cabled fibre shall conform

to IEC 60794-2 (all parts) as well as IEC 60794-3 (all parts).
4.2 Cable elements

The cable elements shall conform to IEC 60794-2 (all parts) and/or IEC 60794-3 (all parts).

5 Specifications for universal indoor-outdoor cables – Construction

Performance parameters for universal indoor-outdoor cable according to IEC 60794-6:2020,

Table 1, shall be addressed by designs following the intent of IEC 60794-3-10. As for typical

outdoor cable designs, the cable attenuation performance is extended over a wide range of

temperatures. In addition, fire performance and flexibility requirements according to

IEC 60794-2 shall be fulfilled. Typical examples of universal indoor-outdoor cable designs are

shown in Annex A.
6 Details of family specifications and test conditions for universal indoor-
outdoor cables
6.1 Applicable tests

Compliance with this document shall be verified by carrying out tests selected from Table 1. It

is not intended that all tests that are specified in 6.2 to 6.5 be carried out in all cases. The tests

to be applied and the frequency of testing shall be agreed between the customer and supplier.

Table 1 – Tests applicable for mechanical and environmental
performance of universal indoor-outdoor cables
Characteristics Detail Test methods Remarks
specifications
Mechanical tests Typically required of most cable designs
Tensile performance See 6.2.2 IEC 60794-1-21,
method E1
Abrasion See 6.2.3 IEC 60794-1-21, Method E2A for sheath abrasion
method E2A, E2B Method E2B, method 2, for cable marking
abrasion
Crush See 6.2.4 IEC 60794-1-21,
method E3A
Impact See 6.2.5 IEC 60794-1-21,
method E4
Repeated bending See 6.2.6 IEC 60794-1-21,
method E6
Torsion See 6.2.7 IEC 60794-1-21,
method E7
---------------------- Page: 10 ----------------------
IEC 60794-6-10:2020 © IEC 2020 – 9 –
Characteristics Detail Test methods Remarks
specifications
Bend See 6.2.8 IEC 60794-1-21,
method E11A or
E11B
Diameter of mandrel should be 40 x cable
Bending under tension See 6.2.9 IEC 60794-1-21,
diameter.
method E18A
Load should be as per 6.2.2
Kink See 6.2.10 IEC 60794-1-21,
method E10
Rip cord functional See 6.2.11 IEC 60794-1-21,
method E25
Environmental tests
Temperature cycling See 6.3.1 IEC 60794-1-22,
method F1

Water penetration See 6.3.2 IEC 60794-1-22, Method F5A is an option not frequently

used
method F5B, F5C
Ageing See 6.3.3 IEC 60794-1-22,
method F9
UV resistance See 6.3.4 IEC 60794-1-22,
method F14
(ISO 4892-2)

Environmental stress See 6.3.5 IEC 60811-406 Highly filled thermoplastics (e.g. FRNC

cracking materials) are more sensitive to stress
cracking. The test was developed for PE
and PP and thus shall be adapted.
Cable external freezing See 6.3.6 IEC 60794-1-215,
method F15A or
F15B
Compound flow See 6.3.7 IEC 60794-1-22,
method F16
Bleeding and See 6.3.8 IEC 60794-1-23,
evaporation method G9
Material compatibility See 6.3.9 IEC 60794-1-219
should be applied
Cable element tests
Ribbon strippability See 6.4.1 IEC 60794-1-23, If ribbons are used
method G10B
Ribbon tear See 6.4.2 IEC 60794-1-23, If ribbons are used
(separability)
method G5
Ribbon dimensions See 6.4.3 IEC 60794-1-23, If ribbons are used
and geometry method G2
Ribbon torsion See 6.4.4 IEC 60794-1-23, If ribbons are used
method G6
IEC 60794-1-23,
Ribbon residual twist See 6.4.5 If ribbons are used
method G8
Tube kinking See 6.4.6 IEC 60794-1-23,
method G7
Bend for optical cable See 6.4.7 IEC 60794-1-23,
elements method G1
Stripping force stability See 6.4.8 IEC 60794-1-23,
of cabled optical fibres method G10A
---------------------- Page: 11 ----------------------
– 10 – IEC 60794-6-10:2020 © IEC 2020
Characteristics Detail Test methods Remarks
specifications
Other tests
Fire performance See 6.5.1 IEC 60332-1 Regional legal requirements shall be
(all parts) fulfilled. For more details, see IEC TR
62222.
IEC 60332-3
(all parts)
IEC 61034
(all parts)
IEC 60754-2

Electrical continuity See 6.5.2 IEC 60794-1-24, For cables with metallic elements

method H3
Thickness of non- See 6.5.3 IEC 60811-202
metallic sheath
Overall dimensions See 6.5.4 IEC 60811-203
6.2 Mechanical tests
6.2.1 General

The general optical criteria in mechanical tests is no change in attenuation, as described in

IEC 60794-1-1. In some environmental and installation tests, some increase is accepted.

The number of fibres tested shall be representative of the cable design according to fibre

sampling indicated in IEC 60794-1-1. Different sampling can be agreed between customer and

supplier.

The minimum acceptance criteria for the different designs of cables shall be indicated in the

product specification.

Test methods are defined in the generic specification IEC 60794-1-21, IEC 60794-1-22 and

IEC 60794-1-23. Universal indoor-outdoor cables are generally designed according to

IEC 60794-3. The mechanical performance is typically less stringent than specified in

IEC 60794-3-10.
6.2.2 Tensile performance
a) Family specifications
While the cable is under short-term tensile load (T , rated tensile load),
• the axial fibre strain shall be < 60 % of the fibre proof strain, and
• the attenuation shall be measured and recorded.
While the cable is under the long-term tensile load (T , residual load),
• the axial fibre strain shall be:

– < 20 % of fibre proof test, for fibre proof tested to ≤ 1 % strain (e.g., 0,69 GPa, 0,2 %

absolute strain), and

– < 17 % of fibre proof test, for fibre proof tested to greater than 1 % to 2 % strain (e.g.,

0,69 GPa to 1,38 Gpa, 0,34 % absolute strain for 2 % proof tested fibre);

NOTE For fibres proof tested at levels above 1 % strain, the safe long-term load will not scale linearly

with proof strain, so a lower percentage of the proof stain is applicable. There is no agreement for strain

limits for proof tests above 2 % strain.
• the change in attenuation shall be:
– single-mode fibre: no change;
– multimode fibre: ≤ 0,2 dB; and
---------------------- Pa
...

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