SIST EN 60794-4-10:2015

SLOVENSKI STANDARD
SIST EN 60794-4-10:2015
01-julij-2015
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SIST EN 60794-4-10:2007
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Optical fibre cables - Part 4-10: Family specification - Optical ground wires (OPGW)
along electrical power lines (IEC 60794-4-10:2014)
Lichtwellenleiterkabel - Teil 4-10: Familienspezifikation - OPWG (Optical Ground Wires)
Lichtwellenleiter-Erdseile auf Starkstromleitungen (IEC 60794-4-10:2014)
Câbles à fibres optiques - Partie 4-10: Spécification de famille - Câbles de garde à fibres
optiques (OPGW - Optical Ground Wires) le long des lignes électriques de puissance
(CEI 60794-4-10:2014)
Ta slovenski standard je istoveten z: EN 60794-4-10:2014
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
SIST EN 60794-4-10:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60794-4-10:2015

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SIST EN 60794-4-10:2015


EUROPEAN STANDARD EN 60794-4-10

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2014
ICS 33.180.10 Supersedes EN 60794-4-10:2007
English Version
Optical fibre cables - Part 4-10: Family specification - Optical
ground wires (OPGW) along electrical power lines
(IEC 60794-4-10:2014)
Câbles à fibres optiques - Partie 4-10: Spécification de Lichtwellenleiterkabel - Teil 4-10: Familienspezifikation -
famille - Câbles de garde à fibres optiques (OPGW - Optical OPWG (Optical Ground Wires) Lichtwellenleiter-Erdseile
Ground Wires) le long des lignes électriques de puissance auf Starkstromleitungen
(CEI 60794-4-10:2014) (IEC 60794-4-10:2014)
This European Standard was approved by CENELEC on 2014-12-03. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60794-4-10:2014 E

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SIST EN 60794-4-10:2015
EN 60794-4-10:2014 - 2 -
Foreword
The text of document 86A/1594/CDV, future edition 2 of IEC 60794-4-10, 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 60794-4-10:2014.
The following dates are fixed:
(dop) 2015-09-03
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2017-12-03
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60794-4-10:2007.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60794-4-10:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60794-1-20 NOTE Harmonized as EN 60794-1-20.
IEC 60794-1-23 NOTE Harmonized as EN 60794-1-23.
ISO 9001 NOTE Harmonized as EN ISO 9001.

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SIST EN 60794-4-10:2015
- 3 - EN 60794-4-10:2014
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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 1 When 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 60104 -  Aluminium-magnesium-silicon alloy wire for - -
overhead line conductors
IEC 60304 -  Standard colours for insulation for low- HD 402 S2 -
frequency cables and wires
IEC 60793 series Optical fibres EN 60793 series
IEC 60793-1-40 -  Optical fibres - EN 60793-1-40 -
Part 1-40: Measurement methods and test
procedures - Attenuation
IEC 60793-1-44 -  Optical fibres - EN 60793-1-44 -
Part 1-44: Measurement methods and test
procedures - Cut-off wavelength
IEC 60793-1-48 -  Optical fibres - EN 60793-1-48 -
Part 1-48: Measurement methods and test
procedures - Polarization mode dispersion
IEC 60793-2-50 -  Optical fibres - EN 60793-2-50 -
Part 2-50: Product specifications -
Sectional specification for class B single-
mode fibres
IEC 60794-1-1 -  Optical fibre cables - EN 60794-1-1 -
Part 1-1: Generic specification - General
1) 1)
IEC 60794-1-21 -  Optical fibre cables - FprEN 60794-1-21 -
Part 1-21: Generic specification - Basic
optical cable test procedures - Mechanical
tests methods
IEC 60794-1-22 2012 Optical fibre cables - EN 60794-1-22 2012
Part 1-22: Generic specification - Basic
optical cable test procedures -
Environmental test methods

1)
 At draft stage.

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SIST EN 60794-4-10:2015
EN 60794-4-10:2014 - 4 -
Publication Year Title EN/HD Year
IEC 60794-1-24 2014 Optical fibre cables - EN 60794-1-24 2014
Part 1-24: Generic specification - Basic
optical cable test procedures - Electrical
test methods
IEC 60794-4 2003 Optical fibre cables - EN 60794-4 2003
Part 4: Sectional specification - Aerial
optical cables along electrical power lines
IEC 60888 -  Zinc-coated steel wires for stranded - -
conductors
IEC 60889 -  Hard-drawn aluminium wire for overhead EN 60889 -
line conductors
IEC 61089 1991 Round wire concentric lay overhead - -
electrical stranded conductors
IEC 61232 -  Aluminium-clad steel wires for electrical EN 61232 -
purposes
IEC 61394 -  Overhead lines - Requirements for greases EN 61394 -
for aluminium, aluminium alloy and steel
bare conductors
IEC 61395 -  Overhead electrical conductors - Creep EN 61395 -
test procedures for stranded conductors

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SIST EN 60794-4-10:2015




IEC 60794-4-10

®


Edition 2.0 2014-10




INTERNATIONAL



STANDARD








colour

inside










Optical fibre cables –

Part 4-10: Family specification – Optical ground wires (OPGW) along electrical

power lines


























INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE
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ICS 33.180.10 ISBN 978-2-8322-1909-6



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


® Registered trademark of the International Electrotechnical Commission

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SIST EN 60794-4-10:2015
– 2 – IEC 60794-4-10:2014 © IEC 2014
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Cables . 7
3.2 Other definitions . 7
4 Optical fibre . 8
4.1 General . 8
4.2 Attenuation . 9
4.2.1 Attenuation coefficient . 9
4.2.2 Attenuation uniformity and attenuation discontinuities . 9
4.3 Cut-off wavelength of cabled fibre . 9
4.4 Fibre colouring . 9
4.5 Polarization mode dispersion (PMD) . 9
5 Cable element . 9
6 Cable construction . 10
7 Cable design characteristics . 10
8 Cable tests . 11
8.1 General . 11
8.2 Classification of tests . 11
8.2.1 Type tests . 11
8.2.2 Factory acceptance tests . 12
8.2.3 Routine tests . 12
8.3 Type tests . 12
8.3.1 General . 12
8.3.2 Tensile performance . 12
8.3.3 Stress-strain test . 13
8.3.4 Breaking strength test . 13
8.3.5 Sheave test . 13
8.3.6 Aeolian vibration test . 14
8.3.7 Creep . 14
8.3.8 Low frequency vibration test (Galloping test) . 15
8.3.9 Temperature cycling . 15
8.3.10 Water penetration (applicable to optical unit(s) only). 16
8.3.11 Short-circuit . 16
8.3.12 Lightning test . 16
Factory acceptance tests . 17
8.4
8.4.1 General . 17
8.4.2 Typical tests . 17
8.5 Routine tests. 17
8.5.1 General . 17
8.5.2 Typical tests . 18
Quality assurance . 18
9
Annex A (informative) Packaging and marking . 19
Bibliography . 20

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SIST EN 60794-4-10:2015
IEC 60794-4-10:2014 © IEC 2014 – 3 –

Table 1 – Cable design characteristics . 10
Table 2 – Lightning test conditions and parameters to be informed in the test report . 17

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SIST EN 60794-4-10:2015
– 4 – IEC 60794-4-10:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

OPTICAL FIBRE CABLES –

Part 4-10: Family specification –
Optical ground wires (OPGW) along electrical power lines

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
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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 60794-4-10 has been prepared by subcommittee 86A: Fibres and
Cables, of IEC technical committee 86. Fibre optics
This second edition cancels and replaces the first edition published in 2006 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) galloping test (9.7) has been added to the type tests list;
b) update of definitions clause; maximum installation tension (MIT) defined and used in the
sheave test description;
c) definition of characterization of OPGW’s mechanical behaviour in order to provide
information useful for electrical power transmission lines designers;

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SIST EN 60794-4-10:2015
IEC 60794-4-10:2014 © IEC 2014 – 5 –
d) improved definition of lightning test parameters and conditions to improve reproducibility
among different laboratories.
The text of this standard is based on the following documents:
CDV Report on voting
86A/1594/CDV 86A/1627/RVC

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 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 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.
A bilingual version of this publication may be issued at a later date.

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.

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SIST EN 60794-4-10:2015
– 6 – IEC 60794-4-10:2014 © IEC 2014
OPTICAL FIBRE CABLES –

Part 4-10: Family specification –
Optical ground wires (OPGW) along electrical power lines



1 Scope
This part of IEC 60794-4, which is a family specification, covers cable construction, test
methods and optical, mechanical, environmental and electrical performance requirements for
OPGW (optical ground wire) which is used for the protection of electrical power lines against
atmospheric discharges or short-circuits and, at the same time, as a high bandwidth transport
media for communications-and-control optical signals. The corresponding environmental
declaration may be built according to IEC TR 62839-1.
The OPGW is a substitute for a conventional ground-/shield-wire containing optical fibres for
control and/or telecommunication purposes. Usually the fibres are embedded loosely in
protective buffer tubes. To fulfil mechanical and electrical requirements; an armouring of one
or more layers with aluminium, aluminium alloy, and aluminium clad steel, galvanized steel or
a mixture of them is helically stranded. If the construction contains an aluminium tube or an
aluminium slotted core, this cross section is considered as a conductive part.
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.
IEC 60104, Aluminium-magnesium-silicon alloy wire for overhead line conductors
IEC 60304, Standard colours for insulation for low-frequency cables and wires
IEC 60793 (all parts), Optical fibres
IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
Attenuation
IEC 60793-1-44, Optical fibres – Part 1-44: Measurement methods and test procedures –Cut-
off wavelength
IEC 60793-1-48, Optical fibres – Part 1-48: Measurement methods and test procedures –
Polarizationn mode dispersion
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specifications
for class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General

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SIST EN 60794-4-10:2015
IEC 60794-4-10:2014 © IEC 2014 – 7 –
IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable
1
test procedures –Mechanical test methods
IEC 60794-1-22:2012, Optical fibre cables – Part 1-22: Generic specification – Basic optical
cable test procedures –Environmental test methods
IEC 60794-1-24:2014, Optical fibre cables – Part 1-24: Generic specification – Basic optical
cable test procedures – Electrical testmethods
IEC 60794-4:2003, Optical fibre cables – Part 4: Sectional specification – Aerial optical cables
along electrical power lines
IEC 60888, Zin-coated steel wires for stranded conductors
IEC 60889, Hard-drawn aluminium wire for overherad line conductors
IEC 61089:1991, Round wire concentric lay overhead electrical stranded conductors
IEC 61232, Aluminium-clad steel wires for electrical purposes
IEC 61394, Overhead lines – Characteristics of greases for aluminium, aluminium alloy and
steel bare conductors
IEC 61395, Overhead electrical conductors – Creep test procedures for stranded conductors
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Cables
3.1.1
optical ground wire
OPGW
metallic optical cable that has the dual performance functions of a conventional ground wire
with telecommunication capabilities
3.2 Other definitions
3.2.1
rated tensile strength
RTS
summation of the product of nominal cross-sectional area, nominal tensile strength and
stranding factor (minimum 0,9) for each load bearing material in the cable construction
Note 1 to entry: See Annex A of IEC 60794-4:2003 for details of the recommended method to calculate rated
tensile strength of OPGW.
3.2.2
creep test
test designed to determine the long-term tensile creep characteristics of metallic aerial
installed cables
_______________
1
To be published.

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SIST EN 60794-4-10:2015
– 8 – IEC 60794-4-10:2014 © IEC 2014
Note 1 to entry: The information derived from this test is used in the sag-tension calculations during the design
layout of the OPGW in the electrical system.
3.2.3
fittings
hardware used for stringing and clipping of OPGW to the structures at the end of the
installation procedure
Note 1 to entry: Suspension, dead end, vibration damper and bonding clamps hardware are designed for a
specific size and/or type of OPGW cable.
3.2.4
optical fibre unit
cable element designed to house and to protect the optical fibres from damage due to
mechanical, thermal and electrical influences and moisture penetration
Note 1 to entry: Further details are given in Clause 6.
3.2.5
maximum allowable ovality
MAOC
unit or its component that does not exceed the specified value when calculated as (d –
1
d )/(d + d ) in %
2 1 2
where
d is the maximum measured diameter of the cable or the component;
1
d is the minimum diameter of the cable or the component at the same cross-section as d .
2 1
3.2.6
maximum allowable tension
MAT
maximum tensile load that may be applied to the cable without detriment to the tensile
performance requirement
Note 1 to entry: Such performances requirements may be optical, fibre strain and mechanical.
3.2.7
maximum installation tension
MIT
maximum recommended stringing tension during installation
3.2.8
strain margin
commonly referred to as 30 % of proof test level and the basis for defining the MIT and MAT
of the optical cable
Note 1 to entry: The strain margin (%) is directly related to the amount of mechanical tension, in N, a specific
cable design can sustain without strain on the optical fibres due to cable elongation.
4 Optical fibre
4.1 General
Single-mode optical fibres shall be used which meet the requirements of the relevant part of
IEC 60793. Fibres other than those specified above can be used, if mutually agreed between
the customer and supplier.

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SIST EN 60794-4-10:2015
IEC 60794-4-10:2014 © IEC 2014 – 9 –
4.2 Attenuation
4.2.1 Attenuation coefficient
The typical maximum attenuation coefficient of the cabled fibres shall meet the requirements
of the relevant part of IEC 60793.
Particular values shall be agreed between customer and supplier.
The attenuation coefficient shall be measured in accordance with IEC 60793-1-40.
4.2.2 Attenuation uniformity and attenuation discontinuities
The local attenuation shall not have point discontinuities in excess of 0,10 dB.
Any reflective discontinuity shall be specified with the optical return loss measurement which
shall be ≥55 dB.
The test method best suited to provide the functional requirements is in accordance with
IEC 60793-1-40.
4.3 Cut-off wavelength of cabled fibre
The cabled fibre cut-off wavelength λ shall be lower than the operational wavelength when
CC
measured in accordance with IEC 60793-1-44.
4.4 Fibre colouring
If the primary coated fibres are coloured for identification, the coloured coating shall be
readily identifiable throughout the lifetime of the cable and shall be at a reasonable match to
IEC 60304. If required, the colouring shall permit sufficient light to be transmitted through the
primary coating to allow local light injection and detection.
4.5 Polarization mode dispersion (PMD)
When mutually agreed between customer and supplier, PMD shall be measured in
accordance with IEC 60793-1-48. The individual PMD and link PMD value of optical fibres
shall meet the limit values indicated in the IEC 60793-2-50 specific table corresponding to the
type of fibre used in the OPGW.
5 Cable element
The material(s) used for a cable element shall be selected so that they are compatible with
the other elements that are in contact with it. Refer to the relevant parts of the sectional
specification IEC 60794-4. The following requirements apply specifically to OPGW:
a) Optical elements (buffer tubes containing optical fibres, bundles, etc) and each fibre within
a cable optical element shall be uniquely identified, for example, by colours, by a
positional scheme, by markings or as agreed between customer and supplier.
b) The optical fibre unit(s) shall house the optical fibres and protect them from damage due
to environmental or mechanical forces such as longitudinal compression, crushing,
bending, twisting, tensile stress, long- and short-term heat effects caused by
environmental variations or by atmospheric discharges.
c) For loose tube construction, one or more primary coated fibres or optical elements are
packaged, loosely in a tube construction, with a suitable water-blocking system. Polymeric
tubes may be reinforced with a composite wall as long as the cable complies with this
specification.

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– 10 – IEC 60794-4-10:2014 © IEC 2014
6 Cable construction
Refer to the relevant parts in Clause 6 of IEC 60794-4 2003. The following requirements apply
specifically to OPGW cables:
a) The optical fibre unit shall house the optical fibres and protect them from damage due to
environmental or mechanical forces such as longitudinal compression, crushing, bending,
twisting, tensile stress, long- a
...