1、BSI Standards PublicationOptical fibre cablesPart 2-51: Indoor cables Detail specification for simplex and duplex cables for use in cords for controlled environmentBS EN 60794-2-51:2014National forewordThis British Standard is the UK implementation of EN 60794-2-51:2014. It isidentical to IEC 60794-
2、2-51:2014.The UK participation in its preparation was entrusted by Technical Com-mittee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to incl
3、ude all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 67423 5ICS 33.180.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Brit
4、ish Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60794-2-51:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60794-2-51 July 2014 ICS 33.180.10
5、English Version Optical fibre cables - Part 2-51: Indoor cables - Detail specification for simplex and duplex cables for use in cords for controlled environment (IEC 60794-2-51:2014) Cbles fibres optiques - Partie 2-51: Cbles intrieurs - Spcification particulire pour les cbles simplex et duplex pour
6、 usage en cordons en environnement contrl (CEI 60794-2-51:2014) Lichtwellenleiterkabel - Teil 2-51: LWL-Innenkabel - Bauartspezifikation fr Simplex- und Duplexkabel zur Verwendung in Kabeln fr kontrollierte Umgebungsbedingungen (IEC 60794-2-51:2014) This European Standard was approved by CENELEC on
7、2014-07-15. 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
8、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 not
9、ified 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,
10、 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 Comit Europen de Normalisation E
11、lectrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60794-2-51:2014 E BS EN 60794-2-51:2014EN 60794-2
12、-51:2014 - 2 - Foreword The text of document 86A/1599/FDIS, future edition 1 of IEC 60794-2-51, 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 60794-2-51:2014. The following dates are fixed: latest date
13、by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-04-15 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-07-15 Attention is drawn to the possibility that
14、 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 60794-2-51:2014 was approved by CENELEC as a European Standard wit
15、hout any modification. BS EN 60794-2-51:2014- 3 - EN 60794-2-51:2014 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
16、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
17、/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 60793-2-10 2011 Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multi
18、mode fibres EN 60793-2-10 2011 IEC 60793-2-50 2012 Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 2013 IEC 60794-1-1 - Optical fibre cables - Part 1-1: Generic specification - General EN 60794-1-1 - IEC 60794-1-2 - Optical fi
19、bre cables - Part 1-2: Generic specification - Cross reference table for optical cable test procedures EN 60794-1-2 - IEC 60794-1-22 - Optical fibre cables - Part 1-22: Generic specification - Basic optical cable test procedures - Environmental test methods EN 60794-1-22 - IEC 60794-2-50 2008 Optica
20、l fibre cables - Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies EN 60794-2-50 2008 IEC 60811-201 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 201: General tests - Measurement of insulation t
21、hickness EN 60811-201 - IEC 61753-1 - Fibre optic interconnecting devices and passive components performance standard - Part 1: General and guidance for performance standards EN 61753-1 - IEC/TR 62225 - Guidance on terms for connectors and mechanical structures in electronic equipment - - BS EN 6079
22、4-2-51:2014 2 IEC 60794-2-51:2014 IEC 2014 CONTENTS 1 Scope 5 2 Normative references 5 3 Terms and definitions 5 4 General requirements 6 5 Particular requirements . 6 5.1 Wavelength . 6 5.2 No change in attenuation 6 5.3 Buffer strippability . 6 5.4 Dimensional requirements . 7 5.4.1 Buffer diamete
23、r 7 5.4.2 Cable diameter 7 5.4.3 Sheath thickness . 8 5.5 Mechanical requirements 8 5.5.1 General . 8 5.5.2 Tensile performance 8 5.5.3 Crush 8 5.5.4 Impact . 9 5.5.5 Repeated bending . 9 5.5.6 Bend 9 5.5.7 Buffered fibre movement in compression . 10 5.6 Environmental requirements . 10 5.6.1 Tempera
24、ture cycling 10 5.6.2 Sheath shrinkage . 10 5.7 Transmission requirements Cabled fibre attenuation 11 5.8 Fire performance 11 Table 1 No change in attenuation . 6 Table 2 Strippability requirements 7 Table 3 Buffer diameter . 7 Table 4 Simplex cable diameter . 7 Table 5 Duplex round cable diameter .
25、 7 Table 6 Duplex zip-cord cable dimension . 7 Table 7 Sheath shrinkage grades . 11 Table 8 Cabled multimode fibre maximum attenuation coefficient (dB/km) . 11 Table 9 Cabled singlemode fibre maximum attenuation coefficient (dB/km) 11 BS EN 60794-2-51:2014IEC 60794-2-51:2014 IEC 2014 5 OPTICAL FIBRE
26、 CABLES Part 2-51: Indoor cables Detail specification for simplex and duplex cables for use in cords for controlled environment 1 Scope This part of IEC 60794 is a detail specification. It gives detailed requirements for cables to be used in cords which are intended for use in a category C environme
27、nt, according to IEC 61753-1. They are characterized with temperature range between 10 C and +60 C. The fibre requirements for this specification are defined in IEC 60793-2-10 for multimode fibres and IEC 60793-2-50 for single-mode fibres. Some deviation to family specification IEC 60794-2-50 requir
28、ements is allowed in certain clauses of this specification. 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 la
29、test edition of the referenced document (including any amendments) applies. IEC 60793-2-10:2011, Optical fibres Part 2-10: Product specifications Sectional specification for category A1 multimode fibres IEC 60793-2-50:2012, Optical fibres Part 2-50: Product specifications Sectional specification for
30、 category B single-mode fibre IEC 60794-1-1, Optical fibre cables Part 1-1: Generic specification General IEC 60794-1-2, Optical fibre cables Part 1-2: Generic specification Crsos reference table for optical cable test procedures IEC 60794-1-22, Optical fibre cables Part 1-22: Generic specification
31、Basic optical cable test procedures Environmental test methods IEC 60794-2-50:2008, Optical fibre cables Part 2-50: Indoor cables Family specification for simplex and duplex cables for use in terminated cable assemblies IEC 60811-201, Electric and optical fibre cables Test methods for non-metallic m
32、aterials Part 201: General tests Measurement of insulation thickness IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard Part 1: General and guidance for performance standards IEC TR 62222, Fire performance of communication cables installed in buildings 3 Ter
33、ms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 reinforced cable cables containing one or two buffered fibres with further protection provided by non metallic strength members and surrounded by a sheath of suitable material BS EN 60794-2-51:2014 6
34、 IEC 60794-2-51:2014 IEC 2014 3.2 cord cable terminated with fibre optic connectors at each end. Cord is also referred to as “terminated cable assembly” 4 General requirements The cable shall meet the requirements of IEC 60794-2-50. The optical fibre contained in the cable shall meet the requirement
35、s of one of the following, along with the normative requirements defined within them: IEC 60793-2-50:2012, Annex A (single-mode B1.1 fibre) IEC 60793-2-50:2012, Annex C (single-mode B1.3 fibre) IEC 60793-2-50:2012, Annex G (single-mode B6 fibre) IEC 60793-2-10:2011, Annex A (multimode A1a, 50 m core
36、 fibre) IEC 60793-2-10:2011, Annex B (multimode A1b, 62,5 m core fibre) Attenuation measurements shall be made at the most critical wavelength agreed between the customer and supplier. 5 Particular requirements NOTE The requirements in this standard either define a specific option relative to the re
37、quirements of IEC 60794-2-50 or define additional requirements. 5.1 Wavelength The measuring wavelength for multimode cabled fibres is either 850 nm or 1 300 nm and shall be agreed between the customer and supplier. The measuring wavelength for single-mode cabled fibres is either 1 310 nm or 1 550 n
38、m or 1 625 nm and shall be agreed between the customer and suppiler. 5.2 No change in attenuation There shall be no change in attenuation for cabled multimode and single-mode fibres according to IEC 60794-1-1 (see Table 1). Table 1 No change in attenuation Fibre type Singlemode dB Multimode dB No ch
39、ange in attenuation after the test 0,05 0,2 5.3 Buffer strippability The strippability requirement is defined according to the buffer type in the cable and requirements for terminating procedure. Cords terminated at each end and using semi tight or loose buffer as secondary coating are also defined
40、in this specification. These products may be cut and used for splicing requiring appropriate stripping. For tight buffer type, the buffer and primary coating are stripped off together to the optical fibre glass surface. For semi-tight and loose buffer, the buffer material is stripped off for a speci
41、fied length leaving the primary coating of the fibre intact. Table 2 outlines the strippability requirements. BS EN 60794-2-51:2014IEC 60794-2-51:2014 IEC 2014 7 Table 2 Strippability requirements Buffer type Tight Semi tight Loose Strippability length 10 25 mm 300 500 mm 1 m 5.4 Dimensional require
42、ments 5.4.1 Buffer diameter The dimensions of the buffer and reinforced cables are given in Table 3. Table 3 Buffer diameter Nominal buffer diameter mm Buffer type Note 0,45 0,05 Loose, tight or semi-tight 1 fibre 0,6 0,05 Loose, tight or semi-tight 1 fibre 0,7 0,05 Loose, tight or semi-tight 1 fibr
43、e 0,9 0,05 Loose, tight or semi-tight 1 fibre Other nominal buffer diameters are acceptable if agreed between customer and supplier. 5.4.2 Cable diameter The cable diameter and its tolerances, depending on cable type, are given in Table 4. Table 4 Simplex cable diameter Nominal cable diameter mm Tol
44、erance mm Cable type Note 1,4 to 4,2 0,2 Reinforced cable 1 fibre The manufacturer shall declare the nominal diameter to be applied to the table of diameter tolerances (see Tables 5 and 6). Table 5 Duplex round cable diameter Nominal cable diameter mm Tolerance mm Cable type Note 2,0 0,2 Reinforced
45、cable 2 fibres 2,8 Reinforced cable 2 fibres 3,7 Reinforced cable 2 fibres Table 6 Duplex zip-cord cable dimension Nominal cable dimension mm Tolerance mm Cable type Note (1,4 2,90) to (2,9 5,80) 0,2 Reinforced cable 2 fibres The manufacturer shall declare the nominal dimension to be applied to the
46、table of dimensions tolerances. The dimensions of other shapes of simplex and duplex cables shall be agreed between customer and supplier. BS EN 60794-2-51:2014 8 IEC 60794-2-51:2014 IEC 2014 5.4.3 Sheath thickness Measuring method: IEC 60811-201. The deviation of the average sheath thickness shall
47、be within the tolerance of 0,1 mm for 100 % of the cable length Local deviations of the nominal sheath thickness that are no larger than 3 mm in axial direction of 1 m length are acceptable. 5.5 Mechanical requirements 5.5.1 General Mechanical tests such as torsion, bend at low temperature, kink and
48、 sheath pull -off force are described in IEC 60794-2-50 and are not repeated here The mechanical tests described here have some differences in method and requirements to those in IEC 60794-2-50. The mechanical tests as well as some requirements differ from family specification. 5.5.2 Tensile perform
49、ance Test method: IEC 60794-1-2, E1 The length of the cable shall be between 15 m and 50 m. The tensile force shall not subject the fibres to strain in excess of limits agreed between the customer and the supplier. Depending on cable diameter, tensile force shall be as follows: For cable type: Simplex: D 2 mm: 70 N D 2 mm: 100 N Duplex: Round: 100 N Zip cord: D 2 mm: 140 N D 2 mm: 200 N Me
