1、4 4 rJ3 STD*BSI BS EN 5OLL7-b-ENGL 1797 M LbZLibbS Ub23078 bTB = BRITISH STANDARD Coaxial cables used in cabled distribution networks Part 6. Sectional specification for outdoor drop cables for use in networks operating at frequencies between 5 MHz and 2150 MHz The European Standard EN 50117-6 : 199
2、7 has the status of a British Standard ICs 33.120.10 NO COPYING WiTHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW i - - BS EN 50117-6 : 1997 STDeBSI BS EN 5ULL7-b-ENGL 1777 1b29bbS 0b23077 539 AmdNo. BS EN 60117-6 : 1997 Date Textanected Committees responsible for this British Standard The
3、 preparation of this British Standard was entrusted by Technical Committee EPU4.6, Cables, wires, waveguides, R.E connectors, and accessories for communidon and signalling, to Subcommittee EP1J46/1, Communication cables, upon which the following bodies were representa3 AEA Technology British Approva
4、ls Service for Cables British Cable Makers Confederation British Telecommunications plc ERA Technology Federation of the Electronics Industry London Underground National Supervising Inspectorate (K NSI) Society of Cable Television Engineers This British Standard, having been prepared under the direc
5、tion of the Electrokchnicai Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1997 O BSI 1997 The following BSI references relate to the work on this standard Committee reference EPUW1 Draft for cornent 9W05026 DC ISBN O 680 27928 6 STD*BSI BS EN
6、 SOLL7-b-ENGL 1797 W lb24bb7 Ob23080 25b BS EN 60117-6 : 1997 National foreword This Part of BS EN 50117 has been prepared by Subcommittee EPU46/1, and is the English anguage version of EN 50117-6 : 1997, published by the European Committee for Electrotechnid Standardization (CENELEC). This British
7、Standard is published under the direction of the Electrotechnid Secfar Board whose Technical Committee EPU46 has the responsibihty to: - - aid enquirers to understand the te* present to the responsible internationaUEuropean committee any enquiries on interpretation, or proposals for change, and keep
8、 UK interess informed; - monitor related internationai and European developments and promuigate them in the UK. NOTE. International and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. Compliance with a British Stand
9、ard does not of itself confer immunity from legal obligations. Dt rn lb Summary of pages This document comprises a nont cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. O BSi 1997 i EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
10、 EN 50117-6 April 1997 ICs 33.120.10 Descriptors: Outdoor drop coaxial cables, cabled networks up to 2150 MHr English version Coaxial cables used in cabled distribution networks Part 6: Sectional specification for outdoor drop cables for use in networks operating at frequencies between 5 MHz and 215
11、0 MHz Cbles coaxiaux de raccordement pour rseaux cbls Partie 6: Spcification intermdiaire pour cbles usage extrieur de rseaux fonctionnant une frquence comprise entre 5 MHz et 21 50 MHz Koaxialkabel fr Kabelverteilanlagen Teil 6: Rahmenspezifikation fr HausanschluBkabel fr Anlagen fr Frequenzen von
12、5 MHt bis 2150 MHz This European Standard was approved by CENELEC on 1996-1 2-09. CENELEC members are bound to comply with the CENEENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists a
13、nd 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 language made by translation under the respo
14、nsibility 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
15、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 Brussels 19
16、97 CENELEC - All rights of exploitation in any form and by any means reservad worldwida for CENELEC members. Ref. NO. EN 501 17-61997 E Page 2 EN 50117-6 : 1997 Foreword This European Standard was prepared by SC 46XA, Coaxial cables, of Technical Committee CENELEC TC 46X, Communication cables. The t
17、ext of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 501 17-6 on 1996-1 2-09. 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 with t
18、he EN have to be withdrawn - latest date by which the national standards conflicting (dop) 1997-1 2-01 (dow) 1997-1 2-01 Page 3 EN 50117-6 : 1997 SECTIONAL SPECIFICATION FOR OUTDOOR DROP CABLES FOR USE IN NETWORKS OPERATING AT FREQUENCIES BETWEEN 5 MEZ AND 2150 MEZ 1. Scope This Sectional specificat
19、ion is intended to be used in conjunction with Generic Specification EN 50117 for Coaxial Cables for use in Cabled Distribution Systems, This Sectional Specification applies to drop cables for outdoor applications in networks (e.g. SMATV) whose frequency of operation is within the range 5 MHz - 2150
20、 MHz. The purpose of the standard is to specify values and preferential characteristics of the cables, and to identify the applicable tests from the Generic Specification. Reference is made to suitable schemes for Quality Assessment, The numbering of the clauses is the same as in the Generic Specifi
21、cation. ELL THE CLAUSES FR OM THE GENERIC AR E APPLI CABLE UNL ESC OTHERWISE STATE D IN THIS SECT1 ONAL SPECIFICA TION. Any variations from the generic specification are also detailed in this specification. 2. Reference Standards EN 50117 Generic Specification for Coaxial Cables used in Cabled Distr
22、ibution Networks 3 Definitions Terminology, units of measure and symbols are the same as in the Generic Specification. 4. Materials and Cable Construction 4.3 Dielectric Unless otherwise specified nominal cable diameter over the dielectric should preferably be selected from the following table; 3,7
23、mm 4,8 nun 6,9 mm 7,2 mm 4.4 Outer Conductor or Screen When braiding is used, the braid angle according to 3.2.2.1 shall be between 15O and 45O. The coverage factor according to 3.2.2.4 shall be greater than or equal to 65%, or, when the cable is provided with a metal foil, greater than or equal to
24、25%. These values are also valid for cables with two bidirectional layers of helically wound wires. Page 4 EN 50117-6 : 1997 4.5 Sheath The sheaths of cables covered by this Sectional Specification shall be in Polyethylene (PE), Sheaths shall be in black PE for aerial applications. For aerial figure
25、-of-eight cables, the messenger shall be solid or stranded, made from galvanized or phosphated steel, or aluminium alloy wires. The messenger type shall be specified in the detail specifications. Note: Tests on messenger wires remain under consideration. 6. Identification Markinu and Labelling 6.2 S
26、heath Markinq Cables shall be marked on the outer sheath with (i) Cable type (ii) Supplier identification. at least once per metre. Additional marking is permissible provided (i) and (ii) above are clearly identifiable. Sheath marking shall not be easily removable (preferably via the use of embossin
27、g or ink). 9. Materials and Cable Construction Tests 9.4 Ovalitv Not applicable 9.5 ht Applicable for black PE sheaths only. 9.6 Tensile Strenuth and Elonaation after Break for Metals Applicable only for inner copper conductor. 9.7 Tensile Strenuth and Elonaation at Break for Metals Applicable only
28、for copper clad steel inner conductors. 9.8 Torsion Test for Comer Clad Metals Applicable only for copper clad steel inner conductors. * u, * STD-BSI BS EN 50227-b-ENGL 2777 Lb24bb7 Ob23085 838 = Page 6 EN 50117-6 : 1997 9.9 Tensile Strenath and Elonqation for Plastics Applicable on the outer sheath
29、 of the cable. Recru irement s Plastic materials used in the construction of these cable shall meet the requirements of HD624 as follows; Polyethylene sheaths HD624.4 9.10 Flammabilitv Not applicable. 10. Mechanical and Thermal Characteristics 10.1 Adhesion of Dielectric The test shall be performed
30、to determine the value of the adhesion of the dielectric to the inner conductor. The application of this test on semi air spaced cables is under consideration. The adhesion of the dielectric to the inner conductor, Fa, shall be given in MPa by the following: Fa = F/(pi*d*l) where Fa is in MPa F is t
31、he strip force in Newtowns d is the diameter of the inner conductor in m 1 is the length of the sample in mm Requirements The maximum value shall be 1,0 MPa. The minimum value shall be 0,l MPa. Where the diameter of the inner conductor is smaller than 1,6 mm the test shall be performed on a 25 mm sa
32、mple length Otherwise it shall be performed on a 50 mm sample length. 10.2 Bendinq (1). 10.2.1 MultiDle Bendinq Under consideration. 10.2.2 Flexinq Not applicable. 10.4 Crush Resistance ,of Cable Q I 18 dB/100m a 18 dB/100m Applicable with an applied load of F = 700 N. The measurement will be done i
33、n accordance with 11.9.2 with a rise time of II nc. 5 - 30 30 - 470 470 - 862 862 - 2150 MHZ MHZ MHZ MHZ 23 23 dB 20 dB 18 dB ( f fs 1 (ffs) 20 20 dB 18 dB 16 dB After a recovery time of no more than 5 minutes the maximum irregularity shall be less than 1%. 10.6 Climatic Tests 10.6.1 Climatic seauen
34、ce Applicable. The cables shall comply with one of the two following classes; (i) Class 40/70/4 (IEC 68) (ii) Class 20/70/4 (IEC 68) 10.6.2 Damli Heat Not applicable. 11. Electrical Characteristics 11.2 JJ Applicable Reauirement The insulation resistance shall be not less than lo4 Mohm.krn. 11.3 Vol
35、taae Test of Dielectric Applicable with a voltage of 2 kV DC or 1,s kV ACrms. 11.5.1 Mean Characteristic Imriedance The mean characteristic impedance shall be 75 f 2 3 n. 11.6 Return Loss Applicable, with required values in accordance with the following table. Note : Q is the longitudinal loss at 80
36、0 MHz STD-BSI BS EN SO117-b-ENGL I777 W Lb24bb9 0b23087 bOO W Frequency Band Screening Attenuation 30 - 470 MHz . 75 dB 470 - 1000 MHz 75 dB - 1000 - 2150 MHz 65 dB (ffs) Page 7 EN 50117-6 : 1997 In each frequency band, 3 peak values up to 4 dB lower than the specified limit are permissible. 11.7 Re
37、lative Propauation Velocitv (Velocitv Ratio) The value may be given in the detail specification for information. 11.8 Lonsitudinal Loss The longitudinal loss shall not exceed the values stated in the detail specification. The values shall be given for at least the following frequencies 5 - 50 - 100
38、- 200 - 400 800 - 1000 - 1600 - 2150 MHz 11.9 Resularitv of Impedance The measurement shall be performed on both ends of delivery lengths. When method A is used the regularity shall be better than 40 dB. When method B is used the regularity shall be better than 1 %. 11.10 Screenina Attenuation The s
39、creening attenuation shall be measured after subjecting the cable length to the test 10.2.1 and shall be in accordance with the following table; 11.11 Transfer ImDedance Under consideration. 12. pualitv Assessment Procedures Under consideration. STD-BSI BS EN SOLL7-b-ENGL 1997 m LbZibbS 0b23088 547
40、m BS EN 50117-6 : 1997 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution 3SI is the independent national body responsible for preparing British Standards. It resents the UK view on standards in Europe and at the international level. It is ncorporated by Royal Charter. Cont
41、ract requirements 4 British Standard does not purport to include all the necessary provisions of a vontract. Users of British Standards are responsible for their correct application. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that th
42、ey possess the latest amendments or editions. t is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the responsible technical committee, the i
43、dentity of which can be found on the Wide front cover. Tel 0181 996 9000; Fax: 0181 996 7400. BSI offers members an individual updajng service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, hkrnational and forei
44、gn standards publications should be addressed to Customer Services, Sales Department at Chiswick Tel 0181 996 7000; Fax: 0181 996 7001. In response to orders for intemational standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless o
45、therwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library, the Standardhe Database, the BSI Information Technology Service (BITS) and its Technical Help to Exporters Service. Contact the Information Dep
46、artment at Chiswick Tel 0181 996 7111; Fax: 0181 996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Customer Services, Membership at Chiswick Tel O1
47、81 996 7002; Fax: 0181 996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copynght, Designs and Patents Act 1988 no exh-act may be reproduced, stored i
48、n a retrieval system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written pennission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, iype or gra
49、de designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained If permission is granted, the terms may include royaity payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager, BSI, 389 Chiswick High Road, London W4 4AL.
