EN 60794-1-1:2016

SLOVENSKI STANDARD
01-maj-2016
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SIST EN 60794-1-1:2012
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Optical fibre cables - Part 1-1: Generic specification - General (IEC 60794-1-1:2015)
Ta slovenski standard je istoveten z: EN 60794-1-1:2016
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60794-1-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2016
ICS 33.180.10 Supersedes EN 60794-1-1:2011
English Version
Optical fibre cables - Part 1-1: Generic specification - General
(IEC 60794-1-1:2015)
Câbles à fibres optiques - Partie 1-1 : spécification Lichtwellenleiterkabel - Teil 1-1: Fachgrundspezifikation -
générique - Généralités Allgemeines
(IEC 60794-1-1:2015) (IEC 60794-1-1:2015)
This European Standard was approved by CENELEC on 2015-12-18. 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
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60794-1-1:2016 E
European foreword
The text of document 86A/1651/CDV, future edition 4 of IEC 60794-1-1, 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 60794-1-1:2016.

The following dates are fixed:
(dop) 2016-09-18
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-12-18
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60794-1-1:2011.

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 60794-1-1:2015 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 60793-2-10 NOTE Harmonized as EN 60793-2-10.
IEC 60794-1-2 NOTE Harmonized as EN 60794-1-2.
IEC 60794-1-23 NOTE Harmonized as EN 60794-1-23.
IEC 60794-1-24 NOTE Harmonized as EN 60794-1-24.
IEC 60794-4:2003 NOTE Harmonized as EN 60794-4:2003.
IEC 60794-4-20:2012 NOTE Harmonized as EN 60794-4-20:2012.
IEC 60794-4 (series) NOTE Harmonized as EN 60794-4:2003 (series).

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 60189-1 -  Low-frequency cables and wires with PVC - -
insulation and PVC sheath - Part 1:
General test and measuring methods
IEC 60304 -  Standard colours for insulation for low- HD 402 S2 -
frequency cables and wires
IEC 60793-1-21 -  Optical fibres -- Part 1-21: Measurement EN 60793-1-21 -
methods and test procedures - Coating
geometry
IEC 60793-1-40 -  Optical fibres -- Part 1-40: Measurement EN 60793-1-40 -
methods and test procedures - Attenuation
IEC 60793-1-44 -  Optical fibres -- Part 1-44: Measurement EN 60793-1-44 -
methods and test procedures - Cut-off
wavelength
IEC 60793-1-46 -  Optical fibres -- Part 1-46: Measurement EN 60793-1-46 -
methods and test procedures - Monitoring
of changes in optical transmittance
IEC 60793-1-48 -  Optical fibres -- Part 1-48: Measurement EN 60793-1-48 -
methods and test procedures - Polarization
mode dispersion
IEC 60793-2 -  Optical fibres - Part 2: Product EN 60793-2 -
specifications - General
IEC 60793-2-50 -  Optical fibres - Part 2-50: Product EN 60793-2-50 -
specifications - Sectional specification for
class B single-mode fibres
IEC 60794-1-21 -  Optical fibre cables -- Part 1-21: Generic EN 60794-1-21 -
specification - Basic optical cable test
procedures - Mechanical tests methods
IEC 60794-1-22 -  Optical fibre cables -- Part 1-22: Generic EN 60794-1-22 -
specification - Basic optical cable test
procedures - Environmental test methods
IEC 60811-201 -  Electric and optical fibre cables - Test EN 60811-201 -
methods for non-metallic materials -- Part
201: General tests - Measurement of
insulation thickness
IEC 60811-202 -  Electric and optical fibre cables - Test EN 60811-202 -
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 EN 60811-203 -
methods for non-metallic materials -- Part
203: General tests - Measurement of
overall dimensions
ISO 14001 -  Environmental management systems_- - -
Requirements with guidance for use
ISO 14064-1 -  Greenhouse gases - Part 1: Specification EN ISO 14064-1 -
with guidance at the organization level for
quantification and reporting of greenhouse
gas emissions and removals
IEC/TR 61931 -  Fibre optic - Terminology - -

IEC 60794-1-1 ®
Edition 4.0 2015-11
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 1-1: Generic specification – General

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-3002-2

– 2 – IEC 60794-1-1:2015 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Graphical symbols and abbreviations. 12
5 Optical fibre cables . 13
6 Materials . 13
6.1 Optical fibre . 13
6.1.1 General . 13
6.1.2 Attenuation coefficient . 13
6.1.3 Attenuation uniformity – Attenuation discontinuities . 13
6.1.4 Cable cut-off wavelength . 14
6.1.5 Fibre colouring. 14
6.1.6 Polarization mode dispersion (PMD) . 14
6.2 Electrical conductors . 14
6.3 Other materials . 14
6.4 Environmental requirements . 14
7 Cable construction . 14
7.1 General . 14
7.2 Colour coding . 15
7.2.1 Overview . 15
7.2.2 Unit colour coding . 15
7.2.3 Sheath colour coding . 15
8 Measuring methods . 15
8.1 General . 15
8.2 Measuring methods for dimensions . 15
8.3 Measuring methods for mechanical characteristics . 16
8.4 Measuring methods for electrical characteristics . 16
8.5 Measuring methods for transmission and optical characteristics. 16
8.6 Measuring methods for environmental characteristics . 17
8.7 Measuring methods for cable element characterisation . 17
9 Related Technical Reports . 17
Annex A (informative) Guidelines for specific defined applications and cabled fibre
performance . 18
A.1 General . 18
A.2 Cabled fibre attenuation requirements. 18
A.3 Cabled fibre bandwidth requirements . 19
A.4 Type testing at 1 625 nm . 20
Annex B (informative) Guidelines for qualification sampling . 21
B.1 General . 21
B.2 Fibre selection for cable testing . 21
B.3 Pass/fail criteria . 21
Bibliography . 23

Table 1 – Measuring methods for dimensions . 16

IEC 60794-1-1:2015 © IEC 2015 – 3 –
Table 2 – Measuring methods for electrical characteristics . 16
Table 3 – Measuring methods for transmission and optical characteristics of cabled
optical fibres . 17
Table A.1 – Maximum cabled fibre attenuation coefficient (dB/km), as given by ITU-T . 18
Table A.2 – Category A1 multimode fibre maximum cable attenuation coefficient
(dB/km) . 19
Table A.3 – Single-mode maximum cable attenuation coefficient (dB/km) . 19
Table A.4 – Category A1 multimode cabled fibre bandwidth (MHz∙km) . 20
Table A.5 – Guidance values for 1 625 nm type test acceptance criteria . 20

– 4 – IEC 60794-1-1:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
OPTICAL FIBRE CABLES –
Part 1-1: Generic specification – General

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 60794-1-1 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This fourth edition cancels and replaces the third edition, published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the expansion of the definitions, graphical symbols, terminology and abbreviations
content, with the aim of making this standard the default and reference for all others in the
IEC 60794-x series;
b) the inclusion of updated and expanded optical fibre, attenuation and bandwidth sections,
with the aim of making this standard the default and reference for all others in the
IEC 60794-x series.
IEC 60794-1-1:2015 © IEC 2015 – 5 –
The text of this standard is based on the following documents:
CDV Report on voting
86A/1651/CDV 86A/1667/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.
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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
– 6 – IEC 60794-1-1:2015 © IEC 2015
OPTICAL FIBRE CABLES –
Part 1-1: Generic specification – General

1 Scope
This part of IEC 60794 applies to optical fibre cables for use with communication equipment
and devices employing similar techniques and to cables having a combination of both optical
fibres and electrical conductors.
The object of this standard is to establish uniform generic requirements for the geometrical,
transmission, material, mechanical, ageing (environmental exposure), climatic and electrical
properties of optical fibre cables and cable elements, where appropriate.
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 60189-1, Low-frequency cables and wires with PVC insulation and PVC sheath – Part 1:
General test and measuring methods
IEC 60304, Standard colours for insulation for low-frequency cables and wires
IEC 60793-1-21, Optical Fibres Part 1-21: Measurement methods and test procedures –
Coating geometry
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 60793-1-46, Optical fibres – Part 1-46: Measurement methods and test procedures –
Monitoring of changes in optical transmittance
IEC 60793-1-48, Optical fibres – Part 1-48: Measurement methods and test procedures –
Polarization mode dispersion
IEC 60793-2, Optical fibres – Part 2: Product specifications – General
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
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 tests methods

IEC 60794-1-1:2015 © IEC 2015 – 7 –
IEC 60811-201, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 201: General tests – Measurement of insulation thickness
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 TR 61931, Fibre optic – Terminology
ISO 14001, Environmental management systems – Requirements with guidance for use
ISO 14064-1, Greenhouse gases – Part 1: Specification with guidance at the organization
level for quantification and reporting of greenhouse gas emissions and removals
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
no change in attenuation
acceptance criterion for attenuation measurement that includes an allowance for
measurement uncertainty arising from measurement errors or calibration errors due to a lack
of suitable reference standards
Note 1 to entry: For a practical interpretation, the following values shall be used:
a) no change in attenuation, single-mode (Class B): the total uncertainty of measurement shall be ≤ ± 0,05 dB
for attenuation or ≤±0,05 dB/km for attenuation coefficient. Any measured value within this range shall be
considered as “no change in attenuation”
The requirement for these parameters is indicated as “No change (≤ ± 0,05 dB or ≤ ± 0,05 dB/km)”.
By agreement between customer and supplier, minor deviation from this limit may be accepted at some low
frequency, e.g. less than 10%. However for mechanical tests no deviation in excess of 0,15 dB shall be accepted.
For environmental tests no deviation in excess of 0,10 dB/km shall be accepted.
b) no change in attenuation, multimode (Category A1): the total uncertainty of measurement shall be ≤ ±0,2 dB
for attenuation or ≤ ±0,2 dB/km for attenuation coefficient
Any measured value within this range shall be considered as “no change in attenuation”.
The requirement for these parameters is indicated as “No change (≤ ± 0,2 dB or ≤ ± 0,2 dB/km)”.
By agreement between customer and supplier, minor deviation from this limit may be accepted at some low
frequency, e.g. less than 10%. However for mechanical tests no deviation in excess of 0,5 dB shall be accepted.
For environmental tests no deviation in excess of 0,5 dB/km shall be accepted.
c) no change in attenuation, plastic optical fibre (Category A4): the total uncertainty of measurement for this
standard shall be ≤ 2 % of maximum specified attenuation in IEC 60793-2-40 Annex A to G
Any measured value within this range shall be considered as “no change in attenuation”.
3.2
allowable change in attenuation
change in attenuation that may be a value
larger than the no change limits, depending on fibre category, single-mode or multimode,
cable design and application
– 8 – IEC 60794-1-1:2015 © IEC 2015
3.3
link design attenuation
LDA
statistical average attenuation value for a link of concatenated cables
3.4
no change in fibre strain
acceptance criterion for fibre strain measurement that includes an allowance for measurement
uncertainty arising from measurement errors or calibration errors due to a lack of suitable
reference standards
Note 1 to entry: For a practical interpretation, the total uncertainty of measurement shall be ±0,05 % strain. Any
measured value within this range shall be considered as “no change in strain”.
3.5
allowable change in fibre strain
level of strain that will not compromise fibre
mechanical reliability for some of the parameters specified
Note 1 to entry: For 1 % proof-tested fibres, the fibre strain under long term tensile load (T ) shall not exceed 20
L
% of this fibre proof strain (equal to absolute 0,2 % strain) and there shall be no change in attenuation during the
test
Under short term tensile load (T ) the fibre strain shall not exceed 60 % of the fibre proof strain and the
S
attenuation change during test shall be measured and recorded.
Other criteria may be agreed between the customer and the supplier.
For fibres proof tested at higher levels the safe long-term load will not scale linearly with proof strain, so a lower
percentage of the proof strain is applicable. For greater than 1 % up to 2 % proof-tested fibres, the strain at T
L
shall be limited to 17 % of the proof-test strain (equal to absolute 0,34 % strain for 2 % proof tested fibres).
3.6
cable load definitions (non-aerial applications)

3.6.1
long term load
T
L
acceptable amount of long term load which the cable may experience during operation (i.e.
after installation is completed)
Note 1 to entry: Long term load may be due to residual loading from the installation process and/or environmental
effect. This is the rated maximum load for which a cable is subject to in long term tests.
3.6.2
short term load
T
S
TM
acceptable amount of short-term load that can be applied to a cable without permanent
degradation of the characteristics of the fibres, cable elements or sheath
Note 1 to entry: Short term load is often called rated installation load.
3.7
cable load definitions and tensile testing terminology
(self-supporting aerial applications)

IEC 60794-1-1:2015 © IEC 2015 – 9 –
3.7.1
maximum allowable tension
MAT
maximum tensile load that may be applied to the cable without detriment to the performance
requirements (e.g. attenuation, fibre reliability) due to fibre strain
Note 1 to entry: Due to installation codes the MAT value is sometimes restricted to be less than 60 % of the
breaking tension of the cable.
3.7.2
strain margin
value of cable elongation at the onset of fibre strain
Note 1 to entry: Strain margin may also be expressed as cable load (N) at the onset of fibre strain.
3.7.3
breaking tension
tensile load that will produce physical rupture of the cable
Note 1 to entry: The breaking tension may be calculated, provided that the design model has been validated.
3.7.4
maximum installation tension
MIT
maximum recommended stringing tension during installation
3.7.5
rated tensile strength
RTS
summation of the product of nominal cross-sectional area, nominal tensile strength and
stranding factor for each load bearing material in the cable construction
Note 1 to entry: See IEC 60794-4:2003, Annex A for details of the recommended method to calculate breaking
tension of OPGW.
3.7.6
creep
tendency of a solid material to slowly move or deform permanently under the influence of
stress
Note 1 to entry: The information derived from creep testing may be used in the sag-tension calculations during
the design layout of aerial optical cables used along electrical power lines.
3.8
cable section
individual reel of cable, as produced
3.9
fittings
hardware used for stringing and clipping of aerial cables to the structures (e.g. towers, poles)
at the end of the installation procedure
Note 1 to entry: Suspension, dead end, vib
...