33.180.10 - Fibres and cables
ICS 33.180.10 Details
Fibres and cables
Glasfasern. Glasfaserkabel
Fibres et cables
(Optična) vlakna in kabli
General Information
- Standard7 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794 applies to optical ground wire (OPGW) and optical phase conductor (OPPC).
This part defines a test standard to determine the ability of a cable to withstand the effects of a controlled salt atmosphere.
- Standard10 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-3-40: 2022 is a family specification that covers sewer cables and conduits for installation by blowing and/or pulling in man accessible and non-man accessible storm and sanitary sewers. Systems built with components covered by this document are subject to the requirements of sectional specification IEC 60794-3. Sewer cable and conduit constructions need to meet the different requirements of the sewer operating companies and/or associations regarding chemical, environmental, operational, cleaning and in general maintenance conditions. Preferential applications, describing sewer cable characteristics versus methods of installation is reported in Annex A and Annex B for non-man accessible sewers. Clause 5 describes characteristics of sewer cables and conduits for installation by blowing, pulling or other means in storm and sanitary sewers. Detail specifications can be prepared on the basis of this family specification. It is important that acceptance criteria are interpreted with respect to this consideration. The number of fibres tested is representative of the sewer cable and is agreed between the customer and the supplier. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
this document follows the new structure for family specifications: symbols and abbreviations were included in Clause 3, and Clause 4 became the General requirements with 4.1 Optical fibres, 4.2 Cable element and 4.3 Optical fibre cable construction;
Annex D has been removed as it is part of IEC TR 62691;
this document has been streamlined by cross-referencing IEC 60794-1-1, IEC 60793-2, IEC 60794-3 and the IEC 60794-1-2x series;
the fibre strain allowance for tensile tests was updated;
characteristics Table 5, Table 6, Table 7 were moved to the Annex A (informative).
- Standard66 pagesEnglish and French languagesale 15% off
IEC 60794-1-310:2022 describes test procedures to be used in establishing uniform requirements of optical fibre cable elements for the mechanical property – strippability. This document applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. Throughout the document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. This document partially cancels and replaces IEC 60794-1-23:2019. This edition includes the following significant technical change with respect to IEC 60794-1-23:2019: inclusion of semi-tight buffer fibres in method G10C.
- Standard24 pagesEnglish and French languagesale 15% off
IEC 60794-3:2022 is available as IEC 60794-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60794-3: 2022 specifies the requirements for optical fibre cables and cable elements which are intended to be used externally in communications networks. Other types of applications requiring similar types of cables can be considered. Requirements for cables to be used in ducts, for directly buried applications, aerial cables and cables for lake and river crossings are included in this document. Also included are cables for specialized use in sewers and in water and gas pipes. For aerial application, this document does not cover all functional aspects of cables installed in the vicinity of overhead power lines. For such applications, additional requirements and test methods can be necessary. Moreover, this document excludes optical ground wires and cables attached to the phase or earth conductors of overhead power lines. For cables for lake and river crossings, this document does not cover methods of cable repair, nor repair capability, nor does it cover cables for use with underwater line amplifiers. This fifth edition cancels and replaces the fourth edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: the ribbon specification has been removed, because it is covered in IEC 60794-1-31.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the general characteristics, conditions for qualification, acceptance and quality
assurance for a fibre optic cable with a 50/125 µm Graded Index fibre core, 1,8 mm outside diameter
for non pull-proof contact designs.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794 applies to optical phase conductor (OPPC). An optical phase conductor is made of multiple metallic wires that are exposed to the environment without any insulating or protective sheath and contain optical fibres.
This part defines a test standard to determine the optical performance and temperature characteristics of a hybrid cable under the maximum current.
- Standard10 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment5 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-1-220:2022 defines a test standard to determine the ability of an optical fibre cable to withstand the effects of a controlled salt atmosphere. This document applies to optical ground wire (OPGW) and optical phase conductor (OPPC). An optical ground wire and optical phase conductor are made of multiple metallic wires that are exposed to the environment without any insulating or protective sheath and contain optical fibres.
- Standard13 pagesEnglish and French languagesale 15% off
IEC 60794-3:2022 is available as IEC 60794-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-3: 2022 specifies the requirements for optical fibre cables and cable elements which are intended to be used externally in communications networks. Other types of applications requiring similar types of cables can be considered. Requirements for cables to be used in ducts, for directly buried applications, aerial cables and cables for lake and river crossings are included in this document. Also included are cables for specialized use in sewers and in water and gas pipes. For aerial application, this document does not cover all functional aspects of cables installed in the vicinity of overhead power lines. For such applications, additional requirements and test methods can be necessary. Moreover, this document excludes optical ground wires and cables attached to the phase or earth conductors of overhead power lines. For cables for lake and river crossings, this document does not cover methods of cable repair, nor repair capability, nor does it cover cables for use with underwater line amplifiers. This fifth edition cancels and replaces the fourth edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: the ribbon specification has been removed, because it is covered in IEC 60794-1-31.
- Standard33 pagesEnglish and French languagesale 15% off
IEC 60794-1-404:2022 defines a test standard to determine the optical performance and temperature characteristics of a hybrid cable under the maximum current. This document applies to optical phase conductor (OPPC). An optical phase conductor is made of multiple metallic wires that are exposed to the environment without any insulating or protective sheath and contain optical fibres.
- Standard13 pagesEnglish and French languagesale 15% off
This part of IEC 60794 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, as well as hybrid telecommunication cables having a combination of both optical fibres and electrical conductors.
The object of this standard is to define test procedures to be used in establishing uniform requirements for the material compatibility performance of cables, cable components, and cable subassemblies.
Compatibility of materials within a cable has the potential to involve a range of material pairs. However, experience has shown that the most pertinent evaluations are of the cable filling and flooding materials interactions with other materials in the cable.
Throughout the standard the wording “optical cable” may also include optical fibre units, microduct fibre units, etc.
See IEC 60794-1-2 for general requirements and definitions and reference guide to test methods of all types.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-1-219:2021 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, as well as hybrid telecommunication cables having a combination of both optical fibres and electrical conductors. The object of this document is to define test procedures to be used in establishing uniform requirements for the material compatibility performance of cables, cable components, and cable subassemblies. Compatibility of materials within a cable has the potential to involve a range of material pairs. However, experience has shown that the most pertinent evaluations are of the cable filling and flooding materials' interactions with other materials in the cable. NOTE Throughout the document the wording “optical cable” can also include optical fibre units, microduct fibre units, etc. See IEC 60794-1-2 for general requirements and definitions, as well as for a reference guide to test methods of all types.
- Standard25 pagesEnglish and French languagesale 15% off
IEC TR 63367:2021 which is a technical report, summarises the results of a round robin on connector end face scratch recognition and verification by automated microscopes. The prime objectives of the study were:
determine the amount of variability (repeatability and reproducibility) when different state-of-the-art inspection systems are assessed against IEC 61300-3-35:2015;
evaluate any system-to-system variation in the quantity of reported scratches;
provide recommendations to improve the repeatability and reproducibility of fibre optic inspection systems.
- Technical report40 pagesEnglish languagesale 15% off
This test is intended to evaluate the impact of a lightning strike on an OPGW, OPPC or OPAC.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
The short-circuit test is intended to assess the performance of the OPGW (optical ground wire) or OPPC (optical phase conductor) under typical short-circuit, or the impact on the performance of OPAC (optical attached cable) under short-circuit current on the messenger wire.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794, which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, in IEC 60794-4 for self-supporting overhead use, in IEC 60794-5 for air blown use and in IEC 60794-6 for indoor/outdoor use. The detailed specification can be verified in specifications for each application such as IEC 60794-2 and IEC 60794-3.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
IEC TR 62000:2021 is available as IEC TR 62000:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TR 62000:2021 provides guidelines concerning single-mode fibre inter-compatibility. A given category of single-mode fibre, for example B-655, can have different implementations by suitably optimising several of the following parameters: mode field diameter (hence effective area), chromatic dispersion coefficient, slope of the chromatic dispersion curve, cable cut-off wavelength. These guidelines indicate the items that are taken into account when planning to connect
- different implementations of single-mode fibres of the same category, for example different implementations of Class B single-mode fibres, and
- single-mode fibres of different sub-categories, for example B-652.B with B-655.C.
This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- global uniformity of terminology concerning fibre classes, categories and sub-categories throughout the document;
- updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre categories and sub-categories;
- updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories;
- additional guidelines concerning combination of fibre parameters: chromatic dispersion and slope, polarization mode dispersion;
- additional guidelines concerning non-linear affects;
- updating of bibliographical references.
- Technical report11 pagesEnglish languagesale 15% off
IEC 60794-1-402:2021 applies to the test intended to evaluate the impact of a lightning strike on an optical ground wire (OPGW), optical phase conductor (OPPC) or optical attached cable (OPAC). This first edition cancels and replaces the first edition of IEC 60794-1-24 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) OPPC cables are included.
- Standard10 pagesEnglish languagesale 15% off
- Standard20 pagesEnglish and French languagesale 15% off
IEC 60794-1-401:2021 applies to the short-circuit test intended to assess the performance of an optical ground wire (OPGW) or optical phase conductor (OPPC) under typical short-circuit, or the impact on the performance of optical attached cable (OPAC) under short-circuit current on the messenger wire. This first edition cancels and replaces the first edition of IEC 60794-1-24 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) OPPC is included;
b) the test methods have been updated.
- Standard13 pagesEnglish languagesale 15% off
IEC 61753-085-02:2021 contains the minimum initial test and measurement requirements and severities which a fibre-optic pigtailed coarse wavelength division multiplexing (CWDM) device satisfies in order to be categorised as meeting the requirements of category C (indoor controlled environment), as defined in Annex A of IEC 61753-1:2018. CWDM is defined in IEC 62074‑1.
This first edition cancels and replaces IEC 61753-085-2 published in 2008. This edition constitutes a technical revision. This edition includes the following specific technical change with respect to IEC 61753-085-2: change of test conditions harmonizing with IEC 61753-1:2018.
- Standard14 pagesEnglish languagesale 15% off
IEC 60794-1-31:2021 is available as IEC 60794-1-31:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60794-1-31:2021 which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, in IEC 60794-4 for self-supporting overhead use, in IEC 60794-5 for air blown use and in IEC 60794-6 for indoor/outdoor use. The detailed specification can be verified in specifications for each application such as IEC 60794-2 and IEC 60794-3. This second edition cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The geometrical requirements for optical fibre ribbon with typically 250 µm coating diameter have been modified and those for the optical fibre ribbon with typically 200 µm coating diameter have been added.
- "Identification by positional identification" and "Identification by ribbon coding and fibre colouring" are moved to a new informative Annex A.
- Standard28 pagesEnglish and French languagesale 15% off
This part of IEC 60794 specifies a method of verifying that cable metallic elements are
electrically continuous throughout the cable. Electrical continuity is important for bonding and
grounding, toning for location, and other related system issues, and may represent a "goodness
of manufacture" criterion. Typically, the test is one of continuity and carries no resistance or
conductivity requirement. The metallic elements can be tested individually or can be tested as
a total group. Since this latter criterion is frequently the case, all elements are measured as a
group unless specified otherwise.
NOTE It is possible detail specifications allow such elements as strength members to be non-continuous throughout
the cable. This is a special case, and attention is directed to the detail specification.
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794, which is a family specification, specifies the optical fibre, cable elements,
cable construction requirements, main requirements for installation and operating conditions,
cable design characteristics and test for OPPC (optical phase conductor), used for carrying
current as well as communication and data transmission. The corresponding environmental
declaration can be built according to IEC TR 62839-1.
The OPPC is a substitute for a conventional phase bare conductor containing optical fibres.
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.
- Standard27 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794 is a family specification that covers outdoor optical fibre cables intended
for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical,
environmental and ingress performance can be used wherever a rapid or multiple deployment
is relevant (e.g. mobile broadcast units, emergency rescue services, tactical ground-forces,
outdoor motion-robotics, mining machinery, temporary repair cables for damaged links, etc.).
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60793 is applicable to category A4 optical multimode fibres and the related
subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. These fibres have a plastic core
and plastic cladding and may have step-index, multi-step index or graded-index profiles. The
fibres are used in information transmission equipment and other applications employing similar
light transmitting techniques, and in fibre optic cables. Table 1 summarizes some of the salient
characteristics and applications of these fibres.In addition to the applications shown in Table 1, other applications for A4 fibres include, but are
not restricted to, the following: support for short reach, high bit-rate systems in telephony,
distribution and local networks, carrying data, voice and/or video services and on-premises
intrabuilding and interbuilding fibre installations, including local area networks (LANs), private
branch exchanges (PBXs), video, various multiplexing uses and miscellaneous related uses,
such as consumer electronics and industrial and mobile networks.
Three types of requirements apply to A4 fibres:
• general requirements, as defined in IEC 60793-2;
• specific requirements common to category A4 multimode fibres covered in this document
and which are given in Clause 4;
particular requirements applicable to individual fibre sub-categories and implementations or
specific applications which are defined in this document, in the normative family
specification annexes.
- Standard38 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61280 specifies two main methods for the determination of low BER values by
making accelerated measurements. These include the variable decision threshold method
(Clause 5) and the variable optical threshold method (Clause 6). In addition, a third method,
the sinusoidal interference method, is described in Annex B.
- Standard34 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-1-403:2021 specifies a method of verifying that cable metallic elements are electrically continuous throughout the cable. Electrical continuity is important for bonding and grounding, toning for location, and other related system issues, and may represent a "goodness of manufacture" criterion. Typically, the test is one of continuity and carries no resistance or conductivity requirement. The metallic elements can be tested individually or can be tested as a total group. Since this latter criterion is frequently the case, all elements are measured as a group unless specified otherwise.
NOTE It is possible detail specifications allow such elements as strength members to be non-continuous throughout the cable. This is a special case, and attention is directed to the detail specification.
- Standard16 pagesEnglish and French languagesale 15% off
This part of IEC 60794 defines test procedures to measure the shrinkage of the sheath due to
thermal exposure of cables.
A first test method, F11A, is included for cables where the fibre or buffered fibre and the sheath
of the cable are intended to be fully terminated into a connector at one or both cable ends.
A second test method, F11B, is included in this document for sheath shrinkage testing for
general purpose.
See IEC 60794-1-2 for a reference guide to test methods of all types and for general
requirements.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60793 establishes uniform requirements for the mechanical characteristic: fibre
curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been
stripped from coating. Fibre curl has been identified as an important parameter for minimizing
the splice loss of optical fibres when using passive alignment fusion splicers or active alignment
mass fusion splicers.
Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres:
• method A: side view microscopy;
• method B: laser beam scattering.
Both methods measure the radius of curvature of an uncoated fibre by determining the amount
of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A
uses visual or digital video methods to determine the deflection of the fibre while method B uses
a line sensor to measure the maximum deflection of one laser beam relative to a reference laser
beam.
By measuring the deflection behaviour of the fibre as it is rotated about its axis and
understanding the geometry of the measuring device, the fibre's radius of curvature can be
calculated from simple circular models, the derivation of which are given in Annex C.
Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts).
Method A is the reference test method, used to resolve disputes.
- Standard21 pagesEnglish languagesale 10% offe-Library read for1 day
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. This document's requirements 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.
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-3-70:2021 is available as IEC 60794-3-70:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-3-70:2021 covers outdoor optical fibre cables intended for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical, environmental and ingress performance can be used wherever a rapid or multiple deployment is relevant (e.g. mobile broadcast units, emergency rescue services, tactical ground-forces, outdoor motion-robotics, mining machinery, temporary repair cables for damaged links, etc.). This second edition cancels and replaces the first edition published in 2016. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- incorporation of the new classification system for optical fibre categories, sub-categories in IEC 60793-2-10;
- incorporation of the new classification system for optical fibre categories, sub-categories and models in IEC 60793-2-50;
- updating of cabled fibre performance categories in alignment with ISO/IEC 11801-1;
- updating of bibliographical references.
- Standard15 pagesEnglish languagesale 15% off
- Standard29 pagesEnglish and French languagesale 15% off
IEC 60794-4-30:2021 specifies the optical fibre, cable elements, cable construction requirements, main requirements for installation and operating conditions, cable design characteristics and test for OPPC (optical phase conductor), used for carrying current as well as communication and data transmission. The corresponding environmental declaration can be built according to IEC TR 62839-1. The OPPC is a substitute for a conventional phase bare conductor containing optical fibres. 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.
- Standard46 pagesEnglish and French languagesale 15% off
This part of IEC 60794-1 applies to optical fibre cables for use with telecommunications
equipment and devices employing similar techniques, and to cables having a combination of
both optical fibres and electrical conductors.
An objective of this document is to define general requirements and methodology guidance
applicable to all of the cable test methods of IEC 60794-1 (all parts).
A second objective of this document is to provide the end user with an overview of the different
test methods contained in the different parts of the IEC 60794-1 series, numbered -Xnn.
Table 1 shows the different parts.
These documents define test procedures to be used in establishing uniform requirements for
the geometrical, transmission, material, mechanical, ageing (environmental exposure) and
climatic properties of optical fibre cables, and electrical requirements where appropriate.
Throughout the documents, the wording "optical cable" can also include optical fibre units,
microduct fibre units, etc.
The secondary objective of this document is to provide the end user with useful guidance when
testing optical fibre cables.
- Standard19 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61280-2-8:2021 is available as IEC 61280-2-8:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61280-2-8:2021 specifies two main methods for the determination of low BER values by making accelerated measurements. These include the variable decision threshold method (Clause 5) and the variable optical threshold method (Clause 6). In addition, a third method, the sinusoidal interference method, is described in Annex B. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- correction of errors in Formula (8) in 5.5.2 and in a related formula in 5.5.3;
- correction of errors in the references to clauses, subclauses, figures, procedures, and in the Bibliography;
- alignment of the terms and definitions in 3.1 with those in IEC 61281-1.
- Standard65 pagesEnglish and French languagesale 15% off
IEC 60793-2-40:2021 is available as IEC 60793-2-40:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-2-40:2021 is applicable to category A4 optical multimode fibres and the related subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. These fibres have a plastic core and plastic cladding and may have step-index, multi-step index or graded-index profiles. The fibres are used in information transmission equipment and other applications employing similar light transmitting techniques, and in fibre optic cables. Table 1 summarizes some of the salient characteristics and applications of these fibres. This fifth edition cancels and replaces the fourth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- revision of NA range of A4a.2;
- addition of a new subcategory A4i;
- deletion of the subcategory A4f and of Annex F.
- Standard68 pagesEnglish and French languagesale 15% off
IEC 60794-1-211:2021 defines test procedures to measure the shrinkage of the sheath due to thermal exposure of cables. A first test method, F11A, is included for cables where the fibre or buffered fibre and the sheath of the cable are intended to be fully terminated into a connector at one or both cable ends. A second test method, F11B, is included in this document for sheath shrinkage testing for general purpose. See IEC 60794-1-2 for a reference guide to test methods of all types and for general requirements.
- Standard25 pagesEnglish and French languagesale 15% off
IEC TR 62959:2021 which is a Technical Report, provides information on cable shrinkage characterisation of optical fibre cables that consist of standard glass optical fibres for telecommunication application. The characterisation is directed to the effects of cable shrinkage or cable element shrinkage on the termination of cables. Shrinkage can or cannot be a concern depending on the method of termination. Examples of different cable termination cases are included and described. Tests for the evaluation of cable shrinkage are recommended that can be used as indicators, and shrinkage classification by several grades are given.
- Technical report75 pagesEnglish languagesale 15% off
IEC 60793-1-34:2021 is available as IEC 60793-1-34:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-1-34:2021 establishes uniform requirements for the mechanical characteristic: fibre curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been stripped from coating. Fibre curl has been identified as an important parameter for minimizing the splice loss of optical fibres when using passive alignment fusion splicers or active alignment mass fusion splicers.Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres:
- method A: side view microscopy;
- method B: laser beam scattering.
Both methods measure the radius of curvature of an uncoated fibre by determining the amount of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A uses visual or digital video methods to determine the deflection of the fibre while method B uses a line sensor to measure the maximum deflection of one laser beam relative to a reference laser beam. By measuring the deflection behaviour of the fibre as it is rotated about its axis and understanding the geometry of the measuring device, the fibre's radius of curvature can be calculated from simple circular models, the derivation of which are given in Annex C. Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts). Method A is the reference test method, used to resolve disputes. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- modification of several derivation equations for laser scattering;
- change of angular increment from 10° to 30° to 10° to 45°;
- change of Annex B from informative to normative.
- Standard36 pagesEnglish and French languagesale 15% off
- Amendment6 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment6 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-3-12:2021 is available as IEC 60794-3-12:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-3-12:2021 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. This document's requirements 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. 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:
- addition of references to ISO/IEC 11801-1;
- removal of references to ISO/IEC 24702;
- incorporation of the OM5 cabled fibre performance category;
- incorporation of the OS1a cabled fibre performance category;
- cabled fibre performance categories OM1, OM2 and OS1 are no longer normative, and are retained for information.
- Standard17 pagesEnglish and French languagesale 15% off
- Amendment6 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60794-1-2:2021 is available as IEC 60794-1-2:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-1-2:2021 applies to optical fibre cables for use with telecommunications equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. An objective of this document is to define general requirements and methodology guidance applicable to all of the cable test methods of IEC 60794-1 (all parts). A second objective of this document is to provide the end user with an overview of the different test methods contained in the different parts of the IEC 60794-1 series. This fifth edition cancels and replaces the fourth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition:
- addition of cross-reference tables listing the new test method numbers and the previous test method numbers.
- Standard33 pagesEnglish and French languagesale 15% off
This standard specifies the procedure for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical fibre cable, under fire conditions.
- Amendment4 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment4 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard26 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60794 is a family specification covering optical fibre outdoor cables which are
flame retardant and thus also applicable to indoor environments. These cables generally
possess the characteristics associated with outdoor cable designs having similar thermal and
mechanical robustness that makes them suitable for use in the outside plant, while
simultaneously exhibiting the fire performance required in indoor premises. A typical application
is for example the extension of a "shorter length" of an outdoor cable into the building.
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This part of IEC 60794 is a family specification covering optical fibre indoor cables that are
deployed in short length (≤ 10 m) outdoor environments. These cables generally possess the
characteristics associated with indoor cable designs having the appropriate fire performance
and flexibility that makes them suitable for use in premises. Because of its predicted use
outdoors, stability against environmental attack, for example UV radiation and humidity (see
IEC 60794-6:2020, Table 1), is important. Typical application spaces include the extension of
a short length of indoor cable outside the building such as to a NAP mounted outside the
building at the house wall.
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This part of IEC 60794 is a sectional specification covering general features of optical fibre
cables applicable to outdoor as well as indoor environments, called "indoor-outdoor cables".
Indoor-outdoor cables are deployed in outside plant environments as well as in premises thus
fulfilling outdoor as well as indoor requirements. Typical application spaces are, for example,
extension of a duct cable into a building or using this design for centralized cabling in the central
office, the premises or local area network where the same cable is used for the entire length of
the cabling link including both the indoor as well as the outdoor portions.
Cables which generally possess the characteristics associated with outdoor cable designs
having the thermal and mechanical robustness that makes them suitable for use in the outside
plant, while simultaneously being relatively flexible, compact and lightweight and exhibiting the
fire performance required in indoor premises are specified in IEC 60794-6-10.
Flame retardant outdoor cables as specified in IEC 60794-6-20 are used when most of the cable
length is deployed as an outdoor cable with a part of its length deployed indoors. The cable
design can be derived from a typical outdoor cable design according to the product
specifications described in IEC 60794-3. The specific performance related to bend radii
according to the installation situation and fire performance according to the regional legislation
mainly requires the appropriate selection of the jacket material in combination with other
material and/or design considerations. Because of the use in buildings with tighter space
restrictions, higher flexibility of the cable is often required for the installation. Often, smaller
diameter cables are preferred.
Indoor cables which are weatherised as specified in (IEC 60794-6-30) are used when an indoor
cable is used outdoors over a short distance (few meters), for example when the network access
point (NAP) is very close to the building. The indoor-outdoor fibre optical cable design can be
derived from an indoor design (see IEC 60794-2 and IEC TR 62901 for typical applications)
with specific outdoor performance features added. Critical parameters are UV stability, and
resistance against exposure to humidity.
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