1、BRITISH STANDARD Single mode optical cable (ductldirect buried installation) The European Standard EN 187105:2002 has the status of a British Standard ICs 33.180.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 187105:2002 British Standards BS EN 187105:2002 Amd. No. N
2、ational foreword Date Comments This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 6 August 2002 This British Standard is the official English
3、 language version of EN 187105:2002. The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible internati
4、onallEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to it
5、s secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic
6、 Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This
7、 document comprises a front cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication O BSI 6 August 2002 ISBN O 580 40183 9
8、 EUROPEAN STANDARD EN 187105 NORME EUROPENNE EUROPISCHE NORM May 2002 ICs 33.180.10 English version Single mode optical cable (duddirect buried installation) Cbles fibres optiques unimodales (installations en conduite/ directement enterres) Einmoden-Lichtwellenleiterkabel fr Rhren- und direkte Erdve
9、rlegung This European Standard was approved by CENELEC on 2001-12-04. CENELEC members are bound to comply with the CENKENELEC 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 bibliogra
10、phical 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 oficial versions (English, French, German). A version in any other language made by translation under the responsibility of
11、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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembour
12、g, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 B
13、russels 0 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 187105:2002 E EN 1871 052002 -2- Foreword This European Standard was prepared by the Technical Committee CENELEC TC 86A. Optical fibres and optical fibre cables . The
14、text of the draft was submitted to the formal vote and was approved by CENELEC as EN 187105 on 2001.12.04 . 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 or by endorsement . latest date by which
15、the national standards conflicting with the EN have to be withdrawn (dop) 2002-12-01 (dow) 2004-12-01 Contents Clause Page 1 Scope . 4 2 Normative references 4 3 Terminology 5 4 General information 6 4.1 General cable description . 6 4.1.1 Characteristics of optical fibre 6 4.1.2 Characteristics of
16、optical fibre cable elements 6 4.1.3 Characteristics of optical fibre cables . 6 4.1.4 Environmental and product safety requirements . 7 4.1.5 Informative note: Upgrading to meet future network requirements 7 4.2 Optical fibre spliceability 7 Requirements for cabled single mode optical fibres . 7 5.
17、1 Fibre materials . 7 5.2.1 Attenuation coefficient 8 5.2.2 Point discontinuities . 8 5.2.3 Chromatic dispersion 8 5.2.4 Cut-off wavelength . 8 5.2.5 Mode field diameter . 9 5.2.6 Macrobending sensitivity 9 5.2.7 Polarisation mode dispersion (PMD) . 9 5.2.8 Refractive group index . 9 5.3 Geometrical
18、 requirements 1 0 5.3.1 Mode field concentricity error . 10 5.3.2 Primary coating non circularity . 10 5.3.3 Cladding/primary coating concentricity error . IO 5.4 Mechanical requirements . 10 5.4.1 Fibre proof test . 10 5.4.2 Coating strip force 10 5.4.3 Stress corrosion susceptibility . 10 4.3 Test
19、ing . 7 5 5.2 Optical requirements 8 -3- EN 1871 052002 6 7 8 Requirements for cable elements 10 6.1 Element design 10 6.1.1 Modularity 11 6.1.2 Fibre and elements identification 11 6.2 Element characteristics 11 6.2.1 Ribbon . 11 6.2.2 Tube kinking . 12 Requirements for optical cables 12 7.1 7.2 7.
20、3 7.4 7.5 7.6 7.7 Cable construction . 12 7.1.1 Cable core 12 7.1.2 Anti-buckling and strength elements splicing 12 7.1.3 Cable element stranding . 12 7.1.4 Spliced fibres . 12 7.1.5 Spare fibres 12 7.1.6 Cable sheath removal 13 7.1.7 Armouring 13 Cable marking 13 7.2.1 Cable marking 13 7.2.2 Identi
21、fication marking . 13 7.2.3 Cable length marking (if required) 13 Cable materials 13 7.3.1 Tube filling compound material 13 7.3.2 Water-blocking material . 13 7.3.3 Filling and water-blocking material flow 13 7.3.4 Cable material compatibility . 14 Cable sheath 14 7.4.1 Sheath material 14 7.4.2 She
22、ath thickness 14 7.4.3 Outer cable diameter 14 7.4.4 Moisture barrier 14 7.5.1 Cable bend . 14 7.5.2 Cable impact 15 7.5.3 Cable crush 15 7.5.4 Cable tensile performance 15 7.5.5 Cable torsion 16 Mechanical requirements . 14 7.5.6 Cable repeated bending . 16 Environmental requirements 16 7.6.3 Water
23、 penetration 17 Electrical protection 17 7.6.1 Temperature cycling . 16 7.6.2 Stripping force stability of cabled optical fibres . 17 7.6.4 Hydrogen in cables . 17 7.6.5 Environmental impact 17 7.7.1 Continuity of metallic members 17 7.7.2 Lightning damage susceptibility 17 Product qualification req
24、uirements 18 8.1 General 18 8.2 Definitions 18 8.3 Optical fibre qualification 18 8.4 Cable qualification . 18 Cable element qualification 18 8.4.1 8.4.2 Optical fibre cable qualification 19 EN 1871 052002 -4- 1 Scope This document sets forth telecom operators, other service providers and manufactur
25、ers view of proposed technical requirements and characteristics of single mode optical fibres and cables for duct and direct buried installation. This specification includes proposed functional mechanical, environmental and optical requirements, recommended features, and test methods for assessing t
26、he product against the stated requirements. The specified test methods where applicable, are those referenced in EN 60794-1-1 “Optical fibre cables - Part 1-1: Generic specification - General“ and described in detail in EN 60794-1-2 “Optical fibre cables - Part 1-2: Generic specification - Basic opt
27、ical cable test procedures“. The requirements of this specification shall be used in conjunction with EN 60794-3 “Optical fibre cables - Part 3: Duct, buried and aerial cables - Sectional specification“ and EN 60794-3-10 “Optical fibre cables - Part 3-10: External cables - Duct and directly buried o
28、ptical telecommunication cables - Family specification“. Multimode fibre requirements are not addressed in this document. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, s
29、ubsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest ed
30、ition of the normative document referred to applies. EN 50290-2-24 EN 50290-2-28 EN 50290-3 EN 60793-1 -30 EN 60793-1 -32 EN 60793-1 -33 EN 60793-1-40 EN 60793-1 -42 EN 60793-1 -44 EN 60793-1 -45 EN 60793-1-47 2002 2002 1) 2002 2) 2002 2) 2002 2002 2) 2002 Communication cables - Part 2-24: Common de
31、sign rules and construction - PE sheathing Communication cables - Part 2-28: Common design rules and construction - Filling compounds for filled cables Communication cables - Part 3: Quality assessment Optical fibres - Part 1-30: Measurement methods and test procedures - Fibre proof (IEC 60793-1-30)
32、 Optical fibres - Part 1-32: Measurement methods and test procedures - Coating strippability (IEC 60793-1-32) Optical fibres - Part 1-33: Measurement methods and test procedures - Stress corrosion susceptibility (IEC 60793-1-33) Optical fibres - Part 1-40: Measurement methods and test procedures - A
33、ttenuation (IEC 60793-1-40) Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion (IEC 60793-1-42) Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength (IEC 60793-1-44) Optical fibres - Part 1-45: Measurement methods and test p
34、rocedures - Mode field diameter (IEC 60793-1-45) Optical fibres - Part 1-47: Measurement methods and test procedures - Macrobending loss attenuation (IEC 60793-1 -47) - ) At draft stage. 2, Awaiting publication pending ratification of prAA. -5- EN 187105:2002 EN 60794-1 -1 EN 60794-1 -2 EN 60794-3 E
35、N 60794-3-10 EN 6081 1-1-1 EN 61663-1 EN 188000 EN 188100 EN 188101 EN 188102 HD 402 S2 IEC 60708-1 IEC 60793-1-1 IEC 60793-1 -2 IEC 60793-1 -4 IEC 60793-1 -5 IEC 60793-2 IEC 61282-3 IEC 61931 IEC 61941 2002 1999 2002 2002 1995 1999 1992 1995 1995 1995 1984 1981 1995 1995 1995 1995 1998 1998 2000 Op
36、tical fibre cables - Part 1-1 : Generic specification - General Optical fibre cables - Part 1-2: Generic specification - Basic optical cable test procedures (IEC 60794-1 -2: 1999) Optical fibre cables - Part 3: Duct, buried and aerial cables - Sectional specification (IEC 60794-3:2001) (IEC 60794-1-
37、1 :2001) Optical fibre cables - Part 3-10:- External cables - Duct and directly buried optical telecommunication cables - Family specification (IEC 60794-3-10) Insulating and sheathing materials of electric cables - Common test methods - Part 1 : General application - Section 1 : Measurement of thic
38、kness and overall dimensions - Tests for determining the mechanical properties (IEC 6081 1-1-1:1993) Lightning protection - Telecommunication lines - Part 1: Fibre optic installations (IEC 61663-1 :1999) Generic specification: Optical fibres Sectional specification: Single-mode (SM) optical fibre Fa
39、mily specification: Single-mode dispersion unshifted (B1 .l ) optical fibre Family specification: Single-mode dispersion shifted (82) optical fibre Standard colours for insulation for low-frequency cables and wires (IEC 60304:1982) Low-frequency cables with polyolefin insulation and moisture barrier
40、 polyolefin sheath - Part 1 : General design details and requirements Optical fibres -Part 1-1: Generic specification - General Optical fibres - Part 1-2: Generic specification - Measuring methods for dimensions Optical fibres - Part 1-4: Generic specification - Measuring methods for transmission an
41、d optical characteristics Optical fibres - Part 1-5: Generic specification - Measuring methods for environmental characteristics Optical fibres - Part 2: Product specifications Guidelines for the calculation of PMD in fiber optic systems Fibre optic - Terminology (Technical Report) Optical fibres -
42、Polarization mode dispersion measurement techniques for single-mode optical fibres (Technical Specification) 3 Terminology Unless otherwise specified the definitions are given in IEC 61931. EN 1871 052002 -6- 4 General information Single mode optical fibres are widely used for communication purposes
43、 and cabled to satisfy the functional requirements of the installation environment. For duct installation, the environment and infrastructure can be varied and may also involve the use of single and multiple subducts. Directly buried cables may be installed by a variety of methods such as ploughing,
44、 trenching and moling with different environments and infrastructure. This may involve specific cable design solutions based on either light, medium or heavy armouring. It is recognised that certain designs of cable for direct buried applications involving light armour may also be suitable for duct
45、installation. The functional requirements and test methods featured in this specification are based upon adherence to established and recognised instal- lation techniques such as those highlighted in the informative annex C (Guide to the installation of optical fibre cable) of EN 60794-1-1. 4.1 Gene
46、ral cable description 4.1.1 Characteristics of optical fibre Single mode optical fibres are classified according to their operational wavelength and dispersion characteristics. The fibres covered by this specification are categorised as type B and described in IEC 60793-1 -1. The predominant fibre t
47、ypes featured in this specification include, dispersion unshifted (B1 .l, B1.3), dispersion shifted (B2) and non-zero dispersion (84). Unless otherwise specified, requirements of applicable European single mode fibre standards (EN 188000, EN 188100, EN 188101 and EN 188102) have to be used in this s
48、tandard. Optical fibres are inherently robust and strong, but the strength can be drastically reduced due to the combination of environmental conditions, unavoidable microscopic surface flaws introduced during fibre manufacture and stresses imposed on the fibre during handling, cabling and installat
49、ion. The strength degradation can be as a result of dynamic or static fatigue as well as through ageing with no stress component. Dynamic fatigue is more likely to occur during installation whilst static fatigue could occur over the lifetime of the fibre arising from residual strain in the cable or within coiled fibre housed in a splice enclosure or footway box. The attenuation of cabled fibre could also increase during its lifetime if the fibre is not suitably protected from mechanical stresses and environmental hazards or if inappropriate and incompatible materials are used
