iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
IEC

IEC TR 62959:2021

(Main)

Optical fibre cables - Shrinkage effects on cable and cable element end termination - Guidance

Optical fibre cables - Shrinkage effects on cable and cable element end termination - Guidance

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.

General Information

Status
Published
Publication Date
16-Feb-2021
ICS
33.180.10 - Fibres and cables
Technical Committee
SC 86A - Fibres and cables
Current Stage
PPUB - Publication issued
Start Date
03-Mar-2021
Completion Date
17-Feb-2021
Ref Project

Buy Standard

IEC TR 62959:2021 - Optical fibre cables - Shrinkage effects on cable and cable element end termination - GuidanceIEC TR 62959:2021 - Optical fibre cables - Shrinkage effects on cable and cable element end termination - Guidance
PreviousNext
Technical report
IEC TR 62959:2021 - Optical fibre cables - Shrinkage effects on cable and cable element end termination - Guidance
English language
75 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

IEC TR 62959
®

Edition 1.0 2021-02
TECHNICAL
REPORT

colour
inside


Optical fibre cables – Shrinkage effects on cable and cable element end
termination – Guidance

IEC TR 62959:2021-02(en)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2021 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.


IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland

About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.

---------------------- Page: 2 ----------------------
IEC TR 62959

®


Edition 1.0 2021-02




TECHNICAL



REPORT








colour

inside










Optical fibre cables – Shrinkage effects on cable and cable element end

termination – Guidance


























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 33.180.10 ISBN 978-2-8322-9434-5




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


® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 2 – IEC TR 62959:2021  IEC 2021
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 10
4 Abbreviated terms . 11
5 Characteristics of optical fibre cables . 11
5.1 General . 11
5.2 Cable materials . 11
5.2.1 Plastic materials . 11
5.2.2 Reversible thermal expansion and contraction . 11
5.2.3 Irreversible thermal contraction (shrinkage) . 12
5.2.4 Forces between cable elements caused by thermal changes . 13
5.3 Cable design .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

IEC
IEC TR 62285:2023(Main)
Application guidelines for nonlinear coefficient measuring methods

IEC TR 62285:2023 is available as IEC TR 62285:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TR 62285:2023 which is a Technical Report, provides guidelines for uniform measurements of the nonlinear coefficient of class B single-mode fibres (see IEC 60793-2-50) in the 1 550 nm region. Measurements of the nonlinear coefficient are used to characterise specific single-mode fibre designs for the purpose of system design relative to power levels and distortion or noise effects derived from the nonlinear optical behaviour. This third edition cancels and replaces the second edition published in 2005. It constitutes a technical revision. This edition includes the following signification technical changes with respect to the previous revision:
a) change fibre type of pigtail to B-652.D fibre or fibre of same type with the fibre under test;
b) modifications on Figure A.1 and Formulas (A.3), (A.4);
c) add example values and recommended method A test conditions for B-G.654.E fibre, update Table C.1.

  • Technical report
    23 pages
    English language
    sale 15% off
IEC
IEC 60794-1-306:2023 ED1(Main)
Optical fibre cables - Part 1-306: Generic specification - Basic optical cable test procedures - Cable element test methods - Ribbon torsion, Method G6

IEC 60794-1-306: 2023 describes test procedures to verify the mechanical and functional integrity of the fibre ribbon structure. The test determines the capability of the ribbon to withstand torsion without delamination between optical fibre and ribbon bonding agent. This document applies to optical fibre ribbons in optical cables for use with telecommunication equipment and devices employing similar techniques, and to optical fibre ribbons in cables having a combination of both optical fibres and electrical conductors. This document is not applicable to partially-bonded ribbons. The method for partially-bonded ribbons is under consideration. Throughout the document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. NOTE The environmental testing of optical fibre ribbon would be valuable for some applications. Useful information about suitable test methods can be found in the optical fibre standards IEC 60793-1-50, IEC 60793-1-51, IEC 60793‑1‑52, and IEC 60793-1-53. This document partially cancels and replaces IEC 60794‑1‑23:2019. This edition includes the following significant technical changes with respect to IEC 60794‑1‑23:2019:
a) change the scope, not include partially-bonded ribbon;
b) add some details to the procedure.

  • Standard
    17 pages
    English and French language
    sale 15% off
IEC
IEC 60794-1-111:2023 ED1(Main)
Optical fibre cables - Part 1-111: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Bend, method E11

IEC 60794-1-111: 2023 defines the test procedure to determine the ability of an optical fibre cable to withstand bending around a test mandrel. The primary purpose of this procedure is to measure the change in attenuation when the cable is bent around a test mandrel. A secondary purpose is to assess whether the cable has been physically damaged by bending. NOTE 1 This test can be utilized at any specified temperature, including the low or high temperature limits for the cable. NOTE 2 The bend test procedure for cable elements is specified in IEC 60794-1-301, method G1. This document partially cancels and replaces IEC 60794-1-21:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60794‑1‑21:2015:
a) the nominal sample length was newly specified as 10 m between the cable element fixing points at both ends, unless otherwise specified;
b) the number of turns on the mandrel in Figure 1 for the single-helix configuration were corrected to match the number of turns shown in the figure for the two-helix configuration;
c) requirements on the turnaround loop were added for method E11A, two-helix configuration;
d) the turnaround loop with the same diameter as the mandrel was taken into account for calculation of the number of turns of each helix for method E11A, two-helix configuration;
e) added a formula for calculation of the number of revolutions in each helix for method E11A, two-helix configuration;
f) added a description for the procedure when the turnaround loop diameter is larger than the mandrel diameter for method E11A, two-helix configuration;
g) all the figures were updated and the different components labelled;
h) added the attenuation monitoring equipment in 4.2 for the apparatus and the description to measure the change in attenuation in the test methods E11A and E11B;
i) added Clause 9 for details to be reported;
j) added Annex A showing an example of a special mandrel to perform the bend test according to method E11A, two-helix configuration;
k) added Annex B providing the rationale for the options of method E11A, two-helix configuration.

  • Standard
    37 pages
    English and French language
    sale 15% off
IEC
IEC 60793-1-44:2023(Main)
Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength

IEC 60793-1-44:2023 establishes uniform requirements for measuring the cut-off wavelength of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. This document gives methods for measuring the cut-off wavelength for uncabled or cabled single mode telecom fibre. These procedures apply to all category B and C fibre types. There are three methods of deployment for measuring the cut-off wavelength:
- method A: cable cut-off using uncabled fibre 22 m long sample, lcc;
- method B: cable cut-off using cabled fibre 22 m long sample, lcc;
- method C: fibre cut-off using uncabled fibre 2 m long sample, lc.
All methods require a reference measurement. There are two reference-scan techniques, either or both of which can be used with all methods:
- bend-reference technique;
- multimode-reference technique using category A1(OM1-OM5) multimode fibre.
This third edition cancels and replaces the second 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) used the diameter of the fibre loops to describe deployment;
b) added Annex D related to cut-off curve artifacts;
c) reorganized information and added more figures to clarify concepts.

  • Standard
    27 pages
    English language
    sale 15% off
IEC
IEC 60794-1-1:2023(Main)
Optical fibre cables - Part 1-1: Generic specification - General

IEC 60794-1-1:2023 applies to optical fibre cables for use with communication equipment and devices employing similar techniques. Electrical properties are specified for optical ground wire (OPGW) and optical phase conductor (OPPC) cables. Hybrid communication cables are specified in the IEC 62807 series. The object of this document 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. 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:
a) reorganization of the document to a more logical flow making it easier for the reader:
b) expansion of the tables to include names and definitions of all documents in the IEC 60794‑x series;
c) expansion of the definitions, graphical symbols, terminology and abbreviations content, with the aim of making this document the default and reference for all others in the IEC 60794‑x series;
d) inclusion of updated, reorganized and expanded optical fibre, attenuation and bandwidth subclauses, with the aim of making this document the default and reference for all others in the IEC 60794-x series.

  • Standard
    104 pages
    English language
    sale 15% off
IEC
IEC 60794-1-309:2023(Main)
Optical fibre cables - Part 1-309: Generic specification - Basic optical cable test procedures - Cable element test methods - Bleeding and evaporation of filling or flooding compounds, Method G9

IEC 60794-1-309:2023 describes the test procedures to be used in establishing uniform requirements for optical fibre cable elements, filling compounds or flooding compounds, for the environmental property-bleeding and evaporation. 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.
NOTE Throughout the document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. This first edition of IEC 60794-1-309 cancels and replaces method G9 of the second edition of IEC 60794-1-23 published in 2019. This edition includes the following significant technical changes with respect to the previous edition:
a) the optical cable element test methods contained in IEC 60794-1-23:2019 will now be individually numbered in the IEC 60794-1-3xx series. Each test method is now considered to be an individual document rather than part of a multi-test method compendium. Full cross-reference details are given in IEC 60794-1-2;
b) the scope is broadened so that the test method is also applicable for flooding compounds;
c) the cover of the test set-up is cancelled.

  • Standard
    14 pages
    English and French language
    sale 15% off
IEC
IEC 60794-1-303:2023(Main)
Optical fibre cables - Part 1-303: Generic specification - Basic optical cable test procedures - Ribbon dimensions - Aperture gauge, method G3

IEC 60794-1-303: 2023 describes test procedures to be used in establishing uniform requirements for the geometrical properties of optical fibre ribbons. This document applies to optical fibre ribbons for use with telecommunication equipment and devices employing similar techniques, and to optical fibre ribbons for cables having a combination of both optical fibres and electrical conductors. This document partially cancels and replaces IEC 60794-1-23:2019. In the context of the revision of IEC 60794-1-23:2019, its contents were split into separate test methods.

  • Standard
    17 pages
    English and French language
    sale 15% off
IEC
IEC 60794-1-301:2023(Main)
Optical fibre cables - Part 1-301: Generic specification - Basic optical cable test procedures - Cable elements test methods - Bend test, method G1

IEC 60794-301:2023 describes test procedures to be used in establishing uniform requirements of optical fibre cable elements for the mechanical property – bending. 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 changes with respect to IEC 60794-1-23:2019:
a) reference test method IEC 60793-1-40 removed regarding the apparatus;
b) information added regarding the temperature to be specified in the detail specification;
c) new subclause added containing the details to be reported.

  • Standard
    17 pages
    English and French language
    sale 15% off
IEC
IEC 60794-2-22:2023(Main)
Optical fibre cables - Part 2-22: Indoor cables - Detail specification for multi-simplex breakout optical cables for use in terminated breakout cable assemblies

IEC 60794-2-22:2023 is available as IEC 60794-2-22:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60794-2-22: 2023 specifies breakout optical cables with multiple simplex optical fibre cables for use in terminated breakout cable assemblies. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) changed partly the wording in the title and the scope to align with IEC 60794-2-50, IEC 60794-2-23 and IEC 60794-2-24;
b) added IEC 60793-1-40, IEC 60793-1-46 and IEC 60794-1-2 to the normative references;
c) deleted reference to IEC 60794-2-51;
d) added the definition of terminated breakout cable assembly;
e) changed the number of bend cycles from 10 to 3 to harmonise with IEC 60794-2-50;
f) changed test parameters for temperature cycling to harmonise with IEC 60794-2-50;
g) added maximum attenuation requirements after temperature cycling;
h) replaced the text for the fire performance with an improved description.

  • Standard
    26 pages
    English and French language
    sale 15% off
IEC
IEC 60794-2-50:2023(Main)
Optical fibre cables - Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies

IEC 60794-2-50:2023 is available as IEC 60794-2-50:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60794-2-50:2023 specifies requirements for simplex and duplex optical fibre cables for use in terminated cable assemblies or as used for termination of passive components. This third edition cancels and replaces the second edition published in 2020. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) added IEC 60793-1-46 and IEC 60794-1-211 to the normative references;
b) changed the load duration for the tensile test from 5 min to 10 min;
c) clarified the distance between the clamps for torsion test to 125 times cable diameter, but not less than 0,3 m;
d) recommended the temperatures –10 °C and +60 °C for indoor simplex and duplex cables and included the low and high temperatures for category C, CHD, OP and OPHD according to the operating service environments in IEC 61753-1 for temperature cycling and shrinkage testing;
e) updated the shrinkage test standard to IEC 60794-1-211, F11A, and changed the requirement to maximum 20 mm;
f) replaced the text for the fire performance with an improved description.

  • Standard
    46 pages
    English and French language
    sale 15% off