1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationOptical fibre cablesPart 1-23: Generic specification Basic optical cable test procedures Cable element test methodsBS EN 60794-1-23:2012National forewordThis British Standard is
2、the UK implementation of EN 60794-1-23:2012. It is identical to IEC 60794-1-23:2012. Together with BS EN 60794-1-2, BS EN 60794-1-20, BS EN 60794-1-21, BS EN 60794-1-22:2012 and BS EN 60794-1-24, it supersedes BS EN 60794-1-2:2003, which will be withdrawn when all parts listed above have been publis
3、hed.The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include al
4、l the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 74248 4 ICS 33.180.10 Compliance with a British Standard cannot confer immunity from legal obligations.This Britis
5、h Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013. Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 60794-1-23:2012EUROPEAN STANDARD EN 60794-1-23 NORME EUROPENNE EUROPISCHE NORM October 2012 CENELEC European Comm
6、ittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC mem
7、bers. Ref. No. EN 60794-1-23:2012 E ICS 33.180.10 Supersedes EN 60794-1-2:2003 (partially)English version Optical fibre cables - Part 1-23: Generic specification - Basic optical cable test procedures - Cable element test methods (IEC 60794-1-23:2012) Cbles fibres optiques - Partie 1-23: Spcification
8、 gnrique - Procdures fondamentales dessai des cbles optiques - Mthodes dessais dlments de cbles (CEI 60794-1-23:2012) Lichtwellenleiterkabel - Teil 1-23: Fachgrundspezifikation - Grundlegende Prfverfahren fr Lichtwellenleiterkabel - Prfverfahren fr Kabelelemente (IEC 60794-1-23:2012) This European S
9、tandard was approved by CENELEC on 2012-09-28. 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 conc
10、erning 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 m
11、ember 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 Repu
12、blic 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. BS EN 60794-1-23:2012EN 60794-1-23:2012 - 2 - Forewor
13、d The text of document 86A/1451/FDIS, future edition 1 of IEC 60794-1-23, 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 60794-1-23:2012. The following dates are fixed: latest date by which the docume
14、nt has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-06-28 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-09-28 This document partially supersedes EN 60794-1-2:2003. Attenti
15、on 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 60794-1-23:2012 was approved by
16、 CENELEC as a European Standard without any modification. BS EN 60794-1-23:2012- 3 - EN 60794-1-23:2012 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 t
17、his 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 When an international publication has been modified by common modifications, in
18、dicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60793-1-40 - Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation EN 60793-1-40 - IEC 60794-3 2001 Optical fibre cables - Part 3: Sectional specification - Outdoor cables EN 60794-3 2002
19、BS EN 60794-1-23:2012 2 60794-1-23 IEC:2012(E) CONTENTS 1 Scope and object 6 2 Normative references . 6 3 Method G1: Bend test for cable elements . 6 3.1 Object . 6 3.2 Sample 6 3.3 Apparatus 6 3.4 Procedure . 7 3.5 Requirements 7 3.6 Details to be specified . 7 4 Method G2: Ribbon dimensions and ge
20、ometry Visual method 7 4.1 Object . 7 4.2 Sample 7 4.3 Apparatus 7 4.4 Procedure . 7 4.4.1 General . 7 4.4.2 Method 1 . 7 4.4.3 Method 2 . 8 4.5 Requirements 8 4.6 Details to be specified . 8 4.7 Definitions of ribbon dimensions and geometry 8 4.7.1 General . 8 4.7.2 Width and height . 8 4.7.3 Basis
21、 line . 8 4.7.4 Fibre alignment 8 5 Method G3: Ribbon dimensions Aperture gauge 9 5.1 Object . 9 5.2 Sample 9 5.3 Apparatus 9 5.4 Procedure . 9 5.5 Requirement 10 5.6 Details to be specified . 10 6 Method G4: Ribbon dimensions Dial gauge (Test deleted) . 10 7 Method G5: Ribbon tear (separability) 10
22、 7.1 Object . 10 7.2 Sample 10 7.3 Apparatus 11 7.4 Procedure . 11 7.5 Requirements 11 7.6 Details to be specified . 11 8 Method G6: Ribbon torsion . 12 8.1 Object . 12 8.2 Sample 12 8.3 Apparatus 12 8.4 Procedure . 12 8.5 Requirements 12 BS EN 60794-1-23:201260794-1-23 IEC:2012(E) 3 8.6 Details to
23、be specified . 12 9 Method G7: Tube kinking 13 9.1 Object . 13 9.2 Sample 13 9.3 Apparatus 13 9.4 Procedure . 14 9.5 Requirements 14 9.6 Details to be specified . 15 10 Method G8: Ribbon residual twist test 15 10.1 Object . 15 10.2 Sample 15 10.3 Apparatus 15 10.4 Procedure . 16 10.5 Requirements 16
24、 10.6 Details to be specified . 16 Figure 1 Cross-sectional drawing illustrating fibre ribbon geometry 9 Figure 2 Aperture gauge 10 Figure 3 Sample preparation 11 Figure 4 Separability procedure . 12 Figure 5 Torsion test 13 Figure 6 Tube kinking test 15 Table 1 Examples of test apparatus dimensions
25、: 14 BS EN 60794-1-23:2012 6 60794-1-23 IEC:2012(E) OPTICAL FIBRE CABLES Part 1-23: Generic specification Basic optical cable test procedures Cable element test methods 1 Scope and object This part of IEC 60794 applies to optical fibre cables for use with telecommunication equipment and devices empl
26、oying similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this part of IEC 60794 is to define test procedures to be used in establishing uniform requirements for the geometrical, material, mechanical, environmental properties of opti
27、cal fibre cable elements. Throughout the document the wording “optical cable” may also include optical fibre units, microduct fibre units, etc. General requirements and definitions are given in IEC 60794-1-20 and a complete reference guide to test method of all types in the IEC 60794-1-2. 2 Normativ
28、e 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) app
29、lies. IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60794-3:2001, Optical fibre cables Part 3: Sectional specification Outdoor cables 3 Method G1: Bend test for cable elements 3.1 Object The purpose of this test is to characterize cable elements fo
30、r splicing purposes by determining the attenuation increase of an optical (fibre, ribbon, core tube, breakout unit, etc.) element when bent within a splice closure or similar device. 3.2 Sample The length of the sample of optical element shall be sufficient to carry out the testing specified. 3.3 Ap
31、paratus The apparatus consists of: a) a mandrel having a smooth surface with diameter as stated in the detail specification; BS EN 60794-1-23:201260794-1-23 IEC:2012(E) 7 b) an attenuation measuring apparatus (see IEC 60793-1-40). 3.4 Procedure The element to be tested shall be loosely wound on the
32、mandrel; the number of turns shall be stated in the detail specification. In order to measure the attenuation increase caused by bending, allowance should be made for the intrinsic attenuation of the fibre. 3.5 Requirements Any increase in attenuation shall comply with the limits shown in the detail
33、 specification. 3.6 Details to be specified The detail specification shall include the following: a) optical test wavelength; b) diameter of the mandrel; c) number of turns; d) apparatus and attenuation measuring technique; e) temperature. 4 Method G2: Ribbon dimensions and geometry Visual method 4.
34、1 Object The purpose of this test is to determine the geometry of an optical fibre ribbon as defined by the parameters of width, height and fibre alignment, for the purpose of type testing to assume proper manufacturing process control. This test is not necessarily suitable for final product inspect
35、ion and, unless otherwise specified, shall not be used for that purpose. 4.2 Sample The number of samples to be tested shall be specified in the detail specification. The selected samples shall be statistically independent and representative of the ribbon population tested. 4.3 Apparatus The apparat
36、us consists of a microscope or profile projector with appropriate magnification. 4.4 Procedure 4.4.1 General Either of the two following procedures may be used. For the specified number of samples, all dimensions shall be measured as average as well as maximum and minimum values. 4.4.2 Method 1 The
37、sample is prepared by cutting it perpendicular to the axis of the ribbon and placing it in a curable resin or in a tool which holds the ribbon. If necessary, the sample shall be ground and polished to prepare a smooth perpendicular end face. The prepared sample is secured with its end face perpendic
38、ular to the optical path and measured by means of a microscope or profile projector. BS EN 60794-1-23:2012 8 60794-1-23 IEC:2012(E) NOTE Care should be taken that the preparation of the sample does not change the structure of the fibre ribbon and represents an undisturbed image of the fibre cladding
39、 and ribbon cross-section. 4.4.3 Method 2 Place the ribbon in a ribbon fibre holder and remove 20 mm to 25 mm of the fibre coating and matrix material with the ribbon hot sheath stripping tool and wipe the stripped portion of the fibres clean with an alcohol-moistened pad. Adjust the position of the
40、 ribbon in the ribbon fibre holder and cleave the fibres at a distance of 250 m to 500 m from the stripped edge of the ribbon. Cut and polish the other end of the ribbon, and illuminate it with a collimated light source. Align and measure the cleaved end of the ribbon under microscope. NOTE Care sho
41、uld be taken that the preparation of the sample does not change the structure of the fibre ribbon and represents an undisturbed image of the fibre cladding and ribbon cross-section. 4.5 Requirements Unless otherwise specified in the detail specification, the width, height and fibre alignment shall b
42、e in accordance with IEC 60794-3:2001, Table 1. 4.6 Details to be specified The detail specification shall include the following: a) permissible maximum and minimum values; b) average values; c) number of samples tested. 4.7 Definitions of ribbon dimensions and geometry 4.7.1 General The following d
43、efinitions apply to a fibre ribbon cross-section as shown in Figure 1. The figure illustrates an example for a 4-fibre ribbon, where a is the diameter of a coloured fibre. NOTE In consideration of the precision of fiber geometric attributes and the relatively larger precision of ribbon geometry requ
44、irements, it is acceptable for glass core/glass cladding fibres to use the edge of the cladding for the measurements of 4.7.3 and 4.7.4 in lieu of the fibre centres. In this case, the measurements shall be made on the same side of all fibres (e.g. top or bottom, left or right side). 4.7.2 Width and
45、height The width w and height h of the ribbon are the dimensions of the minimum rectangular area enclosing the ribbon cross-section. 4.7.3 Basis line The basis line is given in the cross-section of an optical fibre ribbon as the straight line crossing the fibre centres of the first fibre (fibre 1) a
46、nd the last fibre (fibre n) of the fibre ribbon. 4.7.4 Fibre alignment 4.7.4.1 Horizontal fibre separation The horizontal separation of fibres is the distance of the orthogonal projection of two fibre centres on the basis line in the fibre ribbon cross-section. Two horizontal separation parameters c
47、an be distinguished: a) centre-centre distance d between adjacent fibres; b) centre-centre distance b between the extreme fibres; BS EN 60794-1-23:201260794-1-23 IEC:2012(E) 9 4.7.4.2 Planarity The planarity p of the fibre ribbon structure is the sum of the maximum positive and absolute values of th
48、e maximum negative vertical separation of the fibres. The vertical separation of the fibres is the orthogonal distance from the fibre centre to the basis line. The vertical separation is positive for fibres “above” the basis line and negative for fibres “below” the basis line. a d b w phFigure 1 Cro
49、ss-sectional drawing illustrating fibre ribbon geometry 5 Method G3: Ribbon dimensions Aperture gauge 5.1 Object The purpose of this test is to verify the functional performance of a ribbon. In order to ensure functional performance, the dimensions of edge bonded ribbons may be controlled and verified for final inspection purposes with an aperture gauge. The intent is to verify that the end portion of a ribbon can be inserted into and would be reasonably aligned to the
