1、BRITISH STANDARD BS EN 60794-2:2003 Optical fibre cables Part 2: Indoor cables Sectional specification The European Standard EN 60794-2:2003 has the status of a British Standard ICS 33.180.10 BS EN 60794-2:2003 This British Standard was published under the authority of the Standards Policy and Strat
2、egy Committee on 17 February 2003 BSI 17 February 2003 ISBN 0 580 41254 7 National foreword This British Standard is the official English language version of EN 60794-2:2003. It is identical with IEC 60794-2:2002. The UK participation in its preparation was entrusted by Technical Committee GEL/86, F
3、ibre optics, to Subcommittee GEL/86/1, Optical fibres and cables, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications refer
4、red 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 Catalogue or of British Standards Online. This publication does not purport to include all the necessary provis
5、ions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation,
6、or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright date
7、displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60794-2 NORME EUROPENNE EUROPISCHE NORM January 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation E
8、lectrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60794-2:2003 E ICS 33.180.10 English version Optical
9、fibre cables Part 2: Indoor cables - Sectional specification (IEC 60794-2:2002) Cbles fibres optiques Partie 2: Cbles intrieurs - Spcification intermdiaire (CEI 60794-2:2002) Lichtwellenleiterkabel Teil 2: Innenkabel - Rahmenspezifikation (IEC 60794-2:2002) This European Standard was approved by CEN
10、ELEC on 2002-12-01. 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 without any alteration. Up-to-date lists and bibliographical references concerning such national standa
11、rds 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 language made by translation under the responsibility of a CENELEC member into its own language and notif
12、ied 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal
13、, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 86A/819/FDIS, future edition 3 of IEC 60794-2, prepared by SC 86A, Fibres and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60794-2 on 2002-
14、12-01. This standard shall be used in conjunction with EN 60794-1-1:2002 and EN 60794-1-2:1999. 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 (dop) 2003-09-01 latest date by which
15、 the national standards conflicting with the EN have to be withdrawn (dow) 2005-12-01 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 6079
16、4-2:2002 was approved by CENELEC as a European Standard without any modification. _ Page2 EN607942:200360794-2 IEC:2002 3 CONTENTS 1 Scope.4 2 Normative references .4 3 Construction.4 3.1 General4 3.2 Optical fibres and primary coating4 3.3 Buffer.4 3.4 Ruggedized fibre4 3.5 Slotted core .5 3.6 Tube
17、 5 3.7 Stranded losse tube .5 3.8 Ribbon structure 5 3.9 Strength and anti-buckling members 5 3.10 Ripcord .5 3.11 Sheath 5 3.12 Sheath marking .5 3.13 Identification5 3.14 Examples of cable constructions .6 4 Tests7 4.1 Dimensions7 4.2 Mechanical requirements .7 4.3 Environmental requirements.8 4.4
18、 Transmission requirements 8 4.5 Fire performance8 5 Packaging 8 6 Quality assurance.8 Table 1 Colour coding sequence for individual fibres or buffers6 Table 2 Colour coding scheme for tubes in hybrid cables.6 Table 3 Colour coding of cable outer sheaths 6 Annex ZA (normative) Normative references t
19、o international publications with their corresponding European publications .9 Page3 EN607942:200360794-2 IEC:2002 4 OPTICAL FIBRE CABLES Part 2: Indoor cables Sectional specification 1 Scope This part of IEC 60794 is a sectional specification. It gives the requirements that apply to optical fibre c
20、ables for indoor use with applications such as transmission, telephone and data processing equipment and communication and transmission networks. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition c
21、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. They complete the normative references already listed in the generic specification (IEC 60794-1-1, Clause 2, and IEC 60794-1-2 (Clause 2). IEC 60304:1982, Standard colours for insu
22、lation for low-frequency cables and wires IEC 60332-3-24:2000, Tests on electric cables under fire conditions Part 3-24: Test for vertical flame spread of vertically-mounted bunched wires or cables Category C 3 Construction 3.1 General None. 3.2 Optical fibres and primary coating The optical fibre a
23、nd fibre primary coating shall conform to the requirements of IEC 60793-2. 3.3 Buffer The buffer, if any, shall consist of a suitable material applied loosely or tightly over the coated fibre. The interstices between the coated fibre and loose buffer can be filled with a suitable and easily deformab
24、le material. The buffer shall be easily removable. 3.4 Ruggedized fibre Further protection can be provided to tight secondary coated fibres by surrounding one or two with non-metallic strength members within a sheath of suitable material. Page4 EN607942:200360794-2 IEC:2002 5 3.5 Slotted core The sl
25、otted core is obtained by extruding a suitable material with a defined number of slots, providing helical or SZ configuration along the core. One or more primary coated fibres or optical elements such as ribbons or fibre bundles are located in each slot. 3.6 Tube If the fibres are deployed in a tube
26、, one or more individual primary coated fibres or ribbons are packaged (loosely or not) in a tube construction which may be filled. The tube may be reinforced with a composite wall. 3.7 Stranded loose tube None. 3.8 Ribbon structure If the fibres are deployed in the form of a ribbon, the ribbon stru
27、cture shall conform to 6.5 and 8.2.3 of IEC 60794-3. Fibres shall be formed into units of typically two, four, six, eight, or 12 fibres each. The fibres within the units shall remain parallel and not cross. 3.9 Strength and anti-buckling members In general the cable shall be designed with sufficient
28、 strength members to meet installation and service conditions so that the fibres are not subjected to strain in excess of limits agreed between the customer and the manufacturer. The strength and/or anti-buckling members may be either metallic or non-metallic and may be located in the cable core and
29、/or under the sheath and/or in the sheath. 3.10 Ripcord None. 3.11 Sheath The cable core shall be uniformly covered with a protective sheath. 3.12 Sheath marking If required, the cable shall be marked as agreed between the customer and the manufacturer. 3.13 Identification NOTE The fibre, tube and s
30、heath colour codes that follow are examples of possible standard colour identification systems. The final decision on the acceptable system is taken by the user (agreement between the customer and the manufacturer). The coated fibre or buffer shall be distinguishable by means of colour coding or pos
31、itioning. Cable tubes shall be distinguishable by means of numbering or colour coding. Standard colours shall be used, as near as possible (reasonable match) to IEC 60304. The colours for fibres are given in Table 1 and the colours for tubes are given in Table 2. The cable sheath shall be colour cod
32、ed or alternatively, a printing in the sheath indicate the fibre type, for example, G50/125 for multimode fibre with 50 m core diameter. The colours for sheaths are given in Table 3. Page5 EN607942:200360794-2 IEC:2002 6 Table 1 Colour-coding sequence for individual fibres or buffers Fibre number Co
33、lour 1B l u e 2 Yellow 3R e d 4W h i t e 5G r e e n 6 Violet 7 Orange 8G r e y 9 Turquoise 10 Black 11 Brown 12 Pink NOTE For fibre counts above 12, additional groups of 12 fibres should be identified by combining the above sequence with an added identification (for example, ring marking, dashed mar
34、k or tracer). Table 2 Colour-coding scheme for tubes in hybrid cables Fibre type Fibre diameter m Tube colour Multimode 50/125 62,5/125 Green Blue Single-mode dispersion unshifted Single-mode dispersion shifted All diameters All diameters Yellow Red or yellow Table 3 Colour coding of cable outer she
35、aths Cables with fibre type Colour of sheath Single-mode fibre Yellow Multimode fibre with 50 m core diameter Orange Multimode fibre with 62,5 m core diameter Grey Multimode fibre with 100 m core diameter Black Dispersion-shifted fibre Red 3.14 Examples of cable constructions None. Page6 EN607942:20
36、0360794-2 IEC:2002 7 4 Tests Compliance with specification requirements shall be verified by carrying out tests as required by the relevant cable specification. It is not intended that all tests shall be carried out; the frequency of testing shall be agreed between the customer and the manufacturer.
37、 NOTE Tests for cables for use as patch cords are under consideration. 4.1 Dimensions The fibre dimensions and tolerances shall be checked in accordance with test Method C of IEC 60793-1-20 or IEC 60793-1-21. The diameter of the buffer and of the cable, as well as the thickness of the sheath, shall
38、be measured in accordance with the methods of IEC 60189-1. 4.2 Mechanical requirements 4.2.1 Cable tensile performance The cable shall be tested in accordance with IEC 60794-1-2, Method E1. 4.2.2 Cable crush The cable shall be tested in accordance with IEC 60794-1-2, Method E3. 4.2.3 Cable impact Th
39、e cable shall be tested in accordance with IEC 60794-1-2, Method E4. 4.2.4 Cable bending The cable shall be tested in accordance with IEC 60794-1-2, Method E11. 4.2.5 Cable repeated bending The cable shall be tested in accordance with IEC 60794-1-2, Method E6. 4.2.6 Cable bending under tension The c
40、able shall be tested in accordance with IEC 60794-1-2, Method E18. 4.2.7 Cable bending at low temperature The cable shall be tested in accordance with IEC 60794-1-2, Method E11. 4.2.8 Cable flexing The cable shall be tested in accordance with IEC 60794-1-2, Method E8. 4.2.9 Cable torsion The cable s
41、hall be tested in accordance with IEC 60794-1-2, Method E7. 4.2.10 Cable kink The cable shall be tested in accordance with IEC 60794-1-2, Method E10. Page7 EN607942:200360794-2 IEC:2002 8 4.3 Environmental requirements 4.3.1 Temperature cycling The cable shall be tested in accordance with Method F1
42、of IEC 60794-1-2. 4.4 Transmission requirements The transmission requirements shall be verified in accordance with IEC 60793-2 and shall be agreed between the customer and the manufacturer. Maximum cable attenuation shall comply with IEC 60794-1-1. 4.5 Fire performance The cable shall be tested in a
43、ccordance with IEC 60332-1, IEC 60332-3-24, IEC 60754-1, IEC 60754-2, IEC 61034-1, IEC 61034-2 or to any other test method agreed between the customer and manufacturer. 5 Packaging Cable shall be supplied on reels or in coils suitably protected for transport and the cable ends shall be sealed, if ne
44、cessary, to prevent the ingress of moisture. 6 Quality assurance Compliance with specification requirements shall be verified by carrying out tests as indicated in the relevant part of IEC 60794-2. It is not intended that all tests shall be carried out on every length of cable; the frequency of test
45、ing shall be agreed between the customer and manufacturer. It is the responsibility of the manufacturer to establish quality insurance by quality control procedures which ensure that the product meets the requirements of this standard. When the purchaser wishes to specify acceptance tests to other q
46、uality procedures, it is essential that an agreement has been reached between the customer and the manufacturer at the time of ordering. Page8 EN607942:2003 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard i
47、ncorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this
48、European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD a
49、pplies. Publication Year Title EN/HD Year IEC 60304 1982 Standard colours for insulation for low- frequency cables and wires HD 402 S2 1984 IEC 60332-3-24 2000 Tests on electric cables under fire conditions Part 3-24: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category C - - Page9 EN607942:2003BS EN 60794-2:2003 BSI 389 Chiswick High Road Londo
