1、Optical fibre cables Part 2-40: Indoor optical fibre cables Family specification for A4 fibre cablesBS EN 60794-2-40:2008raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/
2、2009 03:51, Uncontrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN 60794-2-40:2008. Itis identical to IEC 60794-2-40:2008.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibre
3、sand cables.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application. BSI 2008ISBN 978 0 580 55780 4ICS 33.180.10Complianc
4、e with a British Standard cannot confer immunity fromlegal obligations.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60794-2-40:2008This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2009. Licensed C
5、opy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 60794-2-40 NORME EUROPENNE EUROPISCHE NORM May 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Ele
6、ktrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60794-2-40:2008 E ICS 33.180.10 English version Optical fibre cables - Part 2-40: Indoor optica
7、l fibre cables - Family specification for A4 fibre cables (IEC 60794-2-40:2008) Cbles fibres optiques - Partie 2-40: Cbles intrieurs fibres optiques - Spcification de famille pour les cbles fibres A4 (CEI 60794-2-40:2008) Lichtwellenleiterkabel - Teil 2-40: LWL-Innenkabel - Familienspezifikation fr
8、Kabel mit Fasern der Kategorie A4 (IEC 60794-2-40:2008) This European Standard was approved by CENELEC on 2008-04-01. 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 witho
9、ut any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other languag
10、e made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denma
11、rk, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/
12、07/2009 03:51, Uncontrolled Copy, (c) BSIEN 60794-2-40:2008 - 2 - Foreword The text of document 86A/1124A/CDV, future edition 2 of IEC 60794-2-40, prepared by SC 86A, Fibres and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC Parallel Unique Acceptance Procedure and was approved
13、 by CENELEC as EN 60794-2-40 on 2008-04-01. This standard is to be used in conjunction with EN 60974-1-1:2002, EN 60794-1-2:2003 and EN 60794-2:2003. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard o
14、r by endorsement (dop) 2009-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-04-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60794-2-40:2008 was approved by CENELEC as a European Standa
15、rd without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60794-2-42 NOTE Harmonized as EN 60794-2-42:2008 (not modified). _ Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c
16、) BSI- 3 - EN 60794-2-40:2008 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For un
17、dated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60189-1 - 1)Low-frequency cables
18、 and wires with PVC insulation and PVC sheath - Part 1: General test and measuring methods - - IEC 60793-1-20 - 1)Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry EN 60793-1-20 2002 2)IEC 60793-1-21 - 1)Optical fibres - Part 1-21: Measurement methods and test proc
19、edures - Coating geometry EN 60793-1-21 2002 2)IEC 60793-2-40 - 1)Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibresEN 60793-2-40 2006 2)IEC 60794-1-1 - 1)Optical fibre cables - Part 1-1: Generic specification - General EN 60794-1-1 2002 2)I
20、EC 60794-1-2 - 1)Optical fibre cables - Part 1-2: Generic specification - Basic optical cable test procedures EN 60794-1-2 2003 2)IEC 60794-2 - 1)Optical fibre cables - Part 2: Indoor cables - Sectional specification EN 60794-2 2003 2)1)Undated reference. 2)Valid edition at date of issue. Licensed C
21、opy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI 2 60794-2-40 IEC:2008(E) CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 Construction.5 3.1 General .5 3.2 Optical fibres.6 3.3 Buffer 6 3.4 Tube6 3.5 Strength and anti-buckling members .6 3.6 Ripcord
22、 .6 3.7 Ribbon 6 3.8 Sheath 6 3.9 Marking .6 3.10 Identification6 3.11 Examples of construction 6 4 Dimensions 6 5 Tests 6 5.1 Dimensions .7 5.2 Mechanical requirements.7 5.3 Environmental requirements7 5.4 Transmission requirements .7 5.5 Fire performance.7 Bibliography9 Table 1 Mechanical tests .7
23、 BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI 4 60794-2-40 IEC:2008(E) The text of this standard is based on the following documents: CDV Report on voting 86A/1124A/CDV 86A/1153/RVC Full information on the voting for the app
24、roval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 60794 series, published under the general title Optical fibre cables, can be found on the IEC
25、website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn,
26、replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI60794-2-40 IEC:2008(E) 5 OPTICAL FIBRE CABLES Part 2-40: Indoor op
27、tical fibre cables Family specification for A4 fibre cables 1 Scope This part of IEC 60794 is a family specification covering buffered A4 fibres and cabled A4 fibres for indoor use. See IEC 60794-2-41 and IEC 607942-42 for blank detail specifications. 2 Normative references The following referenced
28、documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE The normative references given in IEC 60794-1-1 and IEC 60794-1-2 are
29、 also of interest. IEC 60189-1, Low-frequency cables and wires with PVC insulation and PVC sheath Part 1: General test and measuring methods. IEC 60793-1-20, Optical fibres Part 1-20: Measurement methods and test procedures Fibre geometry IEC 60793-1-21, Optical fibres Part 1-21: Measurement methods
30、 and test procedures Coating geometry IEC 60793-2-40, Optical fibres Part 2-40: Product specifications Sectional specification for category A4 multimode fibres IEC 60794-1-1, Optical fibre cables Part 1-1: Generic specification General IEC 60794-1-2, Optical fibre cables Part 1-2: Generic specificat
31、ion Basic optical cable test procedures IEC 60794-2, Indoor cables Sectional specification 3 Construction 3.1 General In addition to the constructional requirements in IEC 60794-2, the following considerations apply to A4 fibre cables. The cable shall be designed and manufactured so that the expecte
32、d operating lifetime would be at least 15 years. In this context, the attenuation of the installed cable at the operational wavelength(s) shall not exceed values agreed between the customer and supplier. The materials in the cable shall not present a health hazard within its intended use. There shal
33、l be no fibre splice in a delivery length unless otherwise agreed by the customer and supplier. BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI 6 60794-2-40 IEC:2008(E) It shall be possible to identify each individual fibre thr
34、oughout the length of the cable. 3.2 Optical fibres Multimode category A4 optical fibres shall be used that meet the requirements of IEC 60793-2-40. 3.3 Buffer The buffer, if any, shall consist of one or more layers of inert material. For tight buffer, the buffer shall be easily removable in one ope
35、ration over a length of 15 mm to 25 mm, depending on customer requirements. For semi-tight buffers, the buffer shall be easily removable over a length of 0,2 m to 2,0 m. 3.4 Tube See product specification. 3.5 Strength and anti-buckling members See product specification. 3.6 Ripcord For future study
36、. 3.7 Ribbon None. 3.8 Sheath See product specification. 3.9 Marking If required, the buffer and/or the sheath shall be marked as agreed between the customer and the supplier. 3.10 Identification See product specification. 3.11 Examples of construction See product specification. 4 Dimensions See pro
37、duct specification. 5 Tests Compliance with specification requirements shall be verified by carrying out tests selected from the following subclauses. It is not intended that all tests be performed; the frequency of testing shall be agreed between the customer and supplier. BS EN 60794-2-40:2008Lice
38、nsed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI60794-2-40 IEC:2008(E) 7 Unless otherwise specified, all tests shall be carried out at ambient temperature. 5.1 Dimensions The fibre dimensions and tolerances shall be checked in accordance with test metho
39、d IEC 60793-1-20 and IEC 60793-1-21. The diameter of the buffer and of the cable, as well as the thickness of the sheath, shall be measured in accordance with the methods of IEC 60189-1. 5.2 Mechanical requirements Some of the following tests, which are detailed in IEC 60794-1-2, can be performed on
40、 a short sample length of cable that is still an integral part of a longer length. Thus it becomes possible to detect permanent changes in attenuation. The maximum value of this attenuation change shall be agreed between the customer and supplier. Table 1 shows mechanical tests performed. The test m
41、ethods, test parameters and requirements are specified in the product specification. Table 1 Mechanical tests Attribute Reference Tensile performance IEC 60794-1-2-E1A IEC 60794-1-2-E1B Crush IEC 60794-1-2-E3 Impact IE 60794-1-2-E4 Bend IEC 60794-1-2-E11A Repeated bending IEC 60794-1-2-E6 Bend at lo
42、w temperature IEC 60794-1-2-E11A Flexing IEC 60794-1-2-E8 Torsion IE 60794-2-E7 Kink IEC 60794-1-2-E10 5.3 Environmental requirements Environmental exposure testing of unbuffered fibre is required only when the fibre is sold in unbuffered form. Otherwise, environmental testing is performed on the co
43、mpleted product after the fibres are buffered or cabled. The test methods, test conditions, and requirements are specified in the product specification. 5.4 Transmission requirements The transmission requirements shall be in accordance with IEC 60793-2-40 and shall be agreed between the customer and
44、 supplier. 5.5 Fire performance IEC/TR 62222 provides guidance and recommendations for the requirements and test methods for the fire performance of communication cables when installed in buildings. The recommendations relate to typical applications and installation practices, and an assessment of t
45、he fire hazards presented. Applicable legislation and regulation are also taken into account. BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI 8 60794-2-40 IEC:2008(E) IEC/TR 62222 references several IEC fire performance test me
46、thods and also other test methods that may be required by local or national legislation and regulation. The tests to be applied, and the requirements, shall be agreed between the customer and supplier taking into account the fire hazard presented by the end use application in which the cable is inte
47、nded to be used. BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI60794-2-40 IEC:2008(E) 9 Bibliography IEC/TR 62222: Fire performance of communication cables installed in buildings IEC 60794-2-41, Optical fibre cables Part 2-41:
48、 Indoor optical fibre cables Product specification for simplex and duplex buffered A4 fibres1IEC 60794-2-42, Optical fibre cables Part 2-42: Indoor optical fibre cables Product specification for simplex and duplex cables with A4 fibres1 _ _ 1To be published. BS EN 60794-2-40:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 06/07/2009 03:51, Uncontrolled Copy, (c) BSI
