1、BRITISH STANDARDBS EN 50117-3:1996Incorporating Corrigendum No. 1Coaxial cables used in cabled distribution networks Part 3: Sectional specification for outdoor drop cablesThe European Standard EN 50117-3:1996 has the status of a British StandardICS 33.120.10BS EN 50117-3:1996This British Standard,
2、having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1996 BSI 17 March 2006The following BSI references relate to the work on this standard:Committee reference EPL/46/1Special announ
3、cement in BSI News Update May 1996ISBN 0 580 26022 4Committees responsible for this British StandardThe preparation of this British Standard was entrusted by Technical Committee EPL/46, Cables, wires and waveguides, RF connectors and accessories for cabling and signalling, to Subcommittee EPL/46/1,
4、Communication cables, on which the following bodies were represented:AEA TechnologyBritish Approvals Services for CablesBritish Broadcasting CorporationBritish Cable Makers ConfederationBritish Railways BoardBritish Telecommunications plcCable Communication AssociationConfederation of Aerial Industr
5、iesERA TechnologyFederation of the Electronics IndustryLondon UndergroundMinistry of DefenceSociety of Cable Television EngineersAmendments issued since publicationAmd. No. Date Comments15845 Corrigendum No. 1 March 2006 See national forewordBS EN 50117-3:1996 BSI 17 March 2006 iContentsPageCommitte
6、es responsible Inside front coverNational foreword iiForeword 21Scope 32 Normative references 33 Definitions 34 Materials and cable construction 36 Identification marking and labelling 39 Materials and cable construction tests 410 Mechanical and thermal characteristics 411 Electrical characteristics
7、 measurement and test methods 512 Quality assessment procedures 5List of references Inside back coverBS EN 50117-3:1996ii BSI 17 March 2006National forewordThis British Standard has been prepared by Subcommittee EPL/46/1 and is the English language version of EN 50117-3:1996, Coaxial cables used in
8、cabled distribution networks Part 3: Sectional specification for outdoor drop cables, published by the European Committee for Electrotechnical Standardization (CENELEC).This Part should be read in conjunction with BS EN 50117-1:2002. Together with BS EN 50117-1:2002, BS EN 50117-2-1: 2005, BS EN 501
9、17-2-2:2004, BS EN 50117-2-3:2004 and BS EN 50117-4:2004, it supersedes BS 5425-1:1986 which is withdrawn.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Internatio
10、nal 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 provisions of a contract. Users are responsible for its correct application. Compliance with a British
11、Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have had
12、 amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 50117-3February 1996ICS 33.120.10Descriptors: Coaxial cables, cabled distribution networks, sectional specification for outdoor drop cablesEnglish versi
13、onCoaxial cables used in cabled distribution networks Part 3: Sectional specification for outdoor drop cablesCbles coaxiaux pour rseaux cbls de distribution Partie 3: Spcification intermdiaire pour cbles de raccordement usage extrieurKoaxialkabel fr Kabelverteilanlagen Teil 3: Rahmenspezifikation fr
14、 HausanschlukabelThis European Standard was approved by CENELEC on 1995-07-04. 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
15、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 responsib
16、ility 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, Nethe
17、rlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.CENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright
18、 reserved to CENELEC membersRef. No. EN 50117-3:1996 EEN 50117-3:1996 BSI 17 March 20062ForewordThis European Standard was prepared by Subcommittee SC 46XA, Coaxial cables, of the Technical Committee CENELEC SC 46X, Communication cables.The text of the draft was submitted to the formal vote and was
19、approved by CENELEC as EN 50117-3 on 1995-07-04.The following dates were fixed: latest date which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1996-07-01 latest date by which the national standards conflicting with the EN hav
20、e to be withdrawn (dow) 1996-07-01EN 50117-3:1996 BSI 17 March 2006 31 ScopeThis Sectional Specification is intended to be used in conjunction with the Generic Specification EN 50117-1, Coaxial cables for use in cabled distribution networks operating at frequencies between 5 MHz and 862 MHz.This Sec
21、tional Specification applies to drop cables for outdoor applications.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
22、numbering of the clauses is the same as in the Generic Specification. All the clauses from the Generic Specification are applicable unless otherwise stated in this Sectional Specification. Any variations from the Generic Specification are also detailed in this specification.2 Normative referencesThi
23、s European Standard incorporates 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 public
24、ations apply to this 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).EN 50117-1, Coaxial cables used in cabled distribution networks Part 1: Generic specification. HD 624.
25、4, Materials used in communication cables Part 4: PE sheathing (under consideration). 3 DefinitionsTerminology, units of measure and symbols are the same as in the Generic Specification.4 Materials and cable construction4.3 DielectricUnless otherwise specified nominal cable diameter over the dielect
26、ric should preferably be selected from the following: 4.4 Outer conductor or screenWhen braiding is used, the braid angle according to 3.2.2.1 shall be between 15 and 45. 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
27、, greater than or equal to 25 %. These values are also valid for cables with two bidirectional layers of helically wound wires.4.5 SheathThe 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
28、 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 marking and labelling6.2 Sheath mar
29、kingCables shall be marked on the outer sheath withi) Cable typeii) Supplier identificationat least once per metre.3,7 mm 4,8 mm 6,9 mm 7,2 mmEN 50117-3:19964 BSI 17 March 2006Additional marking is permissible provided i) and ii) above are clearly identifiable. Sheath marking shall not be easily rem
30、ovable.9 Materials and cable construction tests9.4 OvalityNot applicable.9.5 Carbon black contentApplicable for black PE sheaths only.9.6 Tensile strength and elongation after break for metalsApplicable only for copper inner conductors.9.7 Tensile strength and elongation at break for metalsApplicabl
31、e only for copper clad steel inner conductors.9.8 Torsion test for copper clad metalsApplicable only for copper clad steel inner conductors.9.9 Tensile strength and elongation for plasticsApplicable on the outer sheath of the cable.RequirementsPlastic materials used in the construction of these cabl
32、e shall meet the requirements of HD 624 as follows: 9.10 FlammabilityNot applicable.10 Mechanical and thermal characteristics10.1 Adhesion of dielectricThe test shall be performed to determine the value of the adhesion of the dielectric to the inner conductor.The application of this test on semi air
33、 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/(*d*l)where Fa is in MPa RequirementsThe maximum value shall be 1,0 MPa.The minimum value shall be 0,1 MPa.Where the diameter of the inner conductor is small
34、er than 1,6 mm the test shall be performed on a 25 mm sample length (l). Otherwise it shall be performed on a 50 mm sample length.10.2 Bending10.2.2 FlexingNot applicable.10.4 Crush resistance of cableApplicable with an applied load of F = 700 N.The measurement will be done in accordance with 11.9.2
35、 with a rise time of 1 ns.After a recovery time of no more than 5 min the maximum irregularity shall be less than 1 %.Polyethylene sheaths HD 624.4F is the strip force in Newtonsd is the diameter of the inner conductor in mml is the length of the sample in mmEN 50117-3:1996 BSI 17 March 2006 510.6 C
36、limatic tests10.6.1 Climatic sequenceApplicable.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 Damp heatNot applicable.11 Electrical Characteristics Measurement and test methods11.2 Insulation resistanceApplicable.RequirementTh
37、e insulation resistance shall be not less than 104M5.km.11.3 Voltage test of dielectricApplicable with a voltage of 2 kV d.c or 1,5 kV a.c. rms.11.5 Characteristic impedance11.5.1 Mean characteristic impedanceThe mean characteristic impedance shall be 75 5 3 5.11.6 Return lossApplicable, with requir
38、ed values in accordance with the following table:NOTE is the longitudinal loss at 800 MHzIn each frequency band, 3 peak values up to 4 dB lower than the specified limit are permissible.11.7 Relative propagation velocity (velocity ratio)The value may be given in the Detail Specification for informati
39、on.11.8 Longitudinal lossThe longitudinal loss shall not exceed the values stated in the Detail Specification.The values shall be given for at least the following frequencies:5 50 100 200 400 800 MHz11.9 Regularity of impedanceThe measurement shall be performed on both ends of delivery lengths.When
40、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 Screening attenuationThe screening attenuation shall be measured after subjecting the cable length to the test of 10.2.1 and shall be not less than 75 dB from 30 MHz up to 1
41、 000 MHz.11.11 Transfer impedanceUnder consideration.12 Quality assessment proceduresUnder consideration.5 30 MHz 30 470 MHz 470 862 MHz 18 dB/100 m 23 dB 23 dB 20 dB 18 dB/100 m 20 dB 20 dB 18 dB6blankBS EN 50117-3:1996 BSI 17 March 2006List of referencesSee national foreword.BS EN 50117-3:1995BSI3
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