1、BRITISH STANDARD BS EN 50406-1:2004 End user multi-pair cables used in high bit rate telecommunication networks Part 1: Aerial cables The European Standard EN 50406-1:2004 has the status of a British Standard ICS 33.120.10 BS EN 50406-1:2004 This British Standard was published under the authority of
2、 the Standards Policy and Strategy Committee on 12 August 2004 BSI 12 August 2004 ISBN 0 580 44280 2 National foreword This British Standard is the official English language version of EN 50406-1:2004. The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires
3、, waveguides, R.F. connections, R.F. and microwave passive components and accessories, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European
4、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 Catalogue or of British Standards Online. This publication does not purport to include all th
5、e necessary provisions 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 th
6、e interpretation, 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 14, an inside back cover
7、and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50406-1 NORME EUROPENNE EUROPISCHE NORM June 2004 CENELEC European Committee for Electrotechnical Standard
8、ization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50406-1:2004
9、E ICS 33.120.10 English version End user multi-pair cables used in high bit rate telecommunication networks Part 1: Aerial cables Cbles multi-paires de lutilisateur final utiliss dans les rseaux de tlcommunication haut-dbits Partie 1: Cbles ariens Vielpaarige Kabel fr Endanwender fr Telekommunikatio
10、nsnetzwerke mit hoher Bitrate Teil 1: Luftkabel This European Standard was approved by CENELEC on 2004-02-01. 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 a
11、lteration. Up-to-date lists and 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 b
12、y translation under the responsibility 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, Cyprus, Czech Republic, Denmark, Estonia, Finland,
13、France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 50406-1:2004 - 2 - Foreword This European Standard was prepared by the Technical Committee CEN
14、ELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50406-1 on 2004-02-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical nati
15、onal standard or by endorsement (dop) 2005-02-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-02-01 _ 3 EN 50406-1:2004 Contents 1 Scope 5 2 Normative references 5 3 Terminology and abbreviations .5 3.1 Terminology 5 3.2 Abbreviations 5 4 Gene
16、ral information.6 4.1 General cable description .6 4.2 Environment and product safety requirement.6 4.3 Testing 6 5 Requirements for conductor6 5.1 Construction and dimensions6 5.2 Mechanical requirements6 5.3 Electrical requirements .7 5.3.1 Conductor resistance.7 5.3.2 Conductor resistance unbalan
17、ce .7 6 Requirements for insulation.7 6.1 Construction material and dimensions7 6.1.1 Construction.7 6.1.2 Colour code .7 6.2 Mechanical requirements7 6.3 Electrical requirements .7 6.3.1 Insulation resistance7 6.3.2 Dielectric strength 7 7 Requirements for cable element .8 7.1 Construction and dime
18、nsions8 7.1.1 Screening of the cable element.8 7.1.2 Spare cable elements8 8 Requirements for cable core .8 8.1 Design .8 8.1.1 General 8 8.1.2 Screen8 8.1.3 Interstitial fillers 8 9 Requirements for filling compounds9 10 Requirements for the screening of the cable core 9 11 Requirement for the stre
19、ngth member 9 11.1 Messenger wires for self supported structures .9 11.1.1 Design 9 11.1.2 Information to be supplied .10 12 Requirements for the sheath.10 12.1 Colour of sheath10 12.2 Mechanical requirements11 13 Cable identification 11 EN 50406-1:2004 - 4 - 14 Requirements for finished cable11 14.
20、1 Mechanical requirements11 14.1.1 Bending .11 14.1.2 Impact .11 14.1.3 Tensile (under consideration) 11 14.1.4 Crush resistance11 14.2 Environmental requirements .12 14.2.1 Temperature range 12 14.2.2 Cold bend 12 14.2.3 Fauna and mould proofing.12 14.2.4 Moisture barriers12 15 Electrical requireme
21、nts12 15.1 Dielectric strength .12 15.2 Mutual capacitance .12 15.3 Capacitance unbalance 12 15.4 Velocity of propagation .13 15.5 Attenuation 13 15.6 Longitudinal Conversion Loss (LCL).13 15.7 Near End Crosstalk (NEXT)13 15.8 Equal Level Far-End Crosstalk (ELFEXT) 13 15.9 Power Sum (PS) of crosstal
22、k losses.13 15.10 Mean impedance.13 15.11 Return loss 14 15.12 Coupling attenuation 14 15.13 Transfer impedance .14 15.14 Transmission properties14 16 Product qualification requirements14 5 EN 50406-1:2004 1 Scope This European Standard defines outdoor multi-pair/quad cables for use in high bit rate
23、 telecommunication networks with their relative definitions and requirements. It covers radially water blocked cables, with an overall screen, with performances up to 60 MHz, to be used in outdoor networks intended to connect the broadband outside plant to the individual customer premises with a max
24、imum recommended length of connection of 1 km. The electrical, environmental, mechanical and transmission performance characteristics of the cables, related to their reference test methods, are detailed. 2 Normative references The following referenced documents are indispensable for the application
25、of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50289 series Communication cables - Specifications for test methods (Basic reference standards) EN 50290 series Communi
26、cation cables (Basic reference standards) EN 60811-1-1 1993 Insulating and sheathing materials of electric and optical cables Common test methods Part 1-1: General application - Measurement of thickness and overall dimensions - Tests for determining the mechanical properties (IEC 60811-1-1) EN 60811
27、-1-2 1995 Insulating and sheathing materials of electric cables - Common test methods Part 1-2: General application - Thermal ageing methods (IEC 60811-1-2:1985 + corrigendum May 1986 + A1:1989) HD 402 S2 1984 Standard colours for insulation for low-frequency cables and wires (IEC 60304:1982) IEC 60
28、028 1925 International standard of resistance for copper 3 Terminology and abbreviations 3.1 Terminology For the purpose of this European Standard, the definitions of EN 50290-1-2 apply. 3.2 Abbreviations ADSL Asymmetric Digital Subscriber Lines ATM Asynchronous Transfer Mode DSL Digital Subscriber
29、Line EMC Electromagnetic Compatibility EMI Electromagnetic Interference FSAN Full Service Access Network HDSL High-bit-rate Digital Subscriber Lines EN 50406-1:2004 - 6 - ISDN Integrated Digital Services Network ISDN-BRA ISDN-Basic Rate Access ISDN-PRA ISDN-Primary Rate Access Mbps Mega-bits per sec
30、ond TBD To be determined VDSL Very-high-bit-rate Digital Subscriber Lines XDSL Generic term referring to all DSLs, ISDN, HDSL, ADSL, VDSL, etc. 4 General information 4.1 General cable description These cables are designed for outdoor high bit rate telecommunication networks. They are water- blocked
31、cables with an overall screen. High bit rate applications targeted in this specification involve frequencies up to 60 MHz. To restrict emission and to ensure satisfactory electromagnetic immunity, these cables include an overall screen. These cables contain from one pair up to 200 pairs (ffs) that c
32、an be either in pairs or quads. 4.2 Environment and product safety requirement. Safety local and regional regulation (e.g. relevant European directives) is assumed to be met by these cables. 4.3 Testing For all test procedures described in this subclause, the test conditions shall be the standard at
33、mospheric conditions (23 5)C and 20 % - 70 % Relative Humidity, unless otherwise stated. All measured and computed values are to be rounded to the number of decimal places given in the corresponding requirement or objective. The parameters specified in this standard may be affected by measurement un
34、certainty arising either from measurement errors or calibration errors due to a lack of suitable standards. Acceptance criteria shall be interpreted with respect to this consideration. 5 Requirements for conductor 5.1 Construction and dimensions The conductor shall consist of annealed copper, unifor
35、m in quality and free from defects. The properties of the copper shall be in accordance with IEC 60028. The conductor shall be solid, circular in section. Normally the conductor should be drawn in one piece. Joints in the conductor are permitted, provided that the tensile strength of a joint is not
36、less than 85 % of the un-jointed solid conductor. The diameter of the conductor shall be between 0,4 mm to 0,8 mm. 5.2 Mechanical requirements The conductor elongation at break shall be tested according to EN 50289-3-2 and shall be minimum 10 % for 0,4 mm wires and better than 15 % for wires with di
37、ameters superior to 0,4 mm. 7 EN 50406-1:2004 5.3 Electrical requirements 5.3.1 Conductor resistance While measured in accordance with EN 50289-1-2, the conductor resistance shall meet the computed values when using EN 50290-2-1, Subclause 12.1. 5.3.2 Conductor resistance unbalance While measured in
38、 accordance with EN 50289-1-2, the conductor resistance unbalance shall be maximum 2 %. 6 Requirements for insulation 6.1 Construction material and dimensions 6.1.1 Construction Conductor insulation shall be composed of solid, cellular or composite (e.g. foam skin) polyolefin. The insulation shall b
39、e continuous, having a thickness as uniform as possible. The minimum thickness of the insulation shall be measured in accordance with the method specified in EN 60811-1-1, Subclause 8.2. The insulation shall be applied to fit closely to the conductor. The stripping properties of the insulation shall
40、 be checked in accordance with the method specified in EN 60811-1-1, Subclause 8.1. It shall be possible to strip the insulation from the conductor easily and without damage to the insulation or the conductor. When required the insulated conductors shall be coloured for identification. Colours shall
41、 correspond reasonably with the standard colours shown in HD 402. 6.1.2 Colour code The colour code shall be agreed between the customer and the manufacturer. 6.2 Mechanical requirements Shrinkage of insulation shall be checked against EN 50290-2-23. The shrinkage shall be less than 5 %. 6.3 Electri
42、cal requirements 6.3.1 Insulation resistance When tested according to EN 50289-1-4, the insulation resistance shall be at least 5 000 Mohm.km under 500 V d.c. 6.3.2 Dielectric strength Dielectric strength shall be tested according to EN 50289-1-3. The test shall be conducted with 1 kV d.c. or 700 V
43、a.c. for 2 s. EN 50406-1:2004 - 8 - 7 Requirements for cable element 7.1 Construction and dimensions The cable element is - a pair consisting of two insulated conductors twisted together and designated wire “a“ and wire “b“, or - a quad consisting of four insulated conductors twisted together and de
44、signated wire “a“, wire “c“, wire “b“ and wire “d“ in order of rotation. The choice of the twist configuration (SZ or helical) and the maximum average length of lay in the finished cable shall be made with respect to the specified electrical requirements, handling performance and the pair or quad in
45、tegrity. NOTE Forming the element with a variable lay can lead to the infrequent but acceptable occurrence of the maximum lay being longer than that which may be specified. 7.1.1 Screening of the cable element Where a screen is required over the pair or quad, to improve the external and internal imm
46、unity, it may consist of the following: a) an aluminium tape laminated to a plastic tape; b) an aluminium tape laminated to a plastic tape and a metal-coated or plain copper drain wire whereby the metal tape is in contact with the drain wire. A protective wrapping may be applied under or/and over th
47、e screen. 7.1.2 Spare cable elements The cable may be equipped with spare pairs or quads in accordance with the basic cable structure. The number of spare cable elements is depending upon agreement between the customer and the supplier 8 Requirements for cable core 8.1 Design 8.1.1 General The cable
48、 unit may be laid up (SZ or helical) in concentric layers or in units screened or unscreened. 8.1.2 Screen Where a screen is required over the unit, it may consist of the following: a) an aluminium tape laminated to a plastic tape; b) an aluminium tape laminated to a plastic tape and a metal-coated
49、or plain copper drain wire whereby the metal tape is in contact with the drain wire. A protective wrapping may be applied under or/and over the screen. 8.1.3 Interstitial fillers In order to provide a compact and reasonably circular cable fillers may be used. 9 EN 50406-1:2004 9 Requirements for filling compounds When required the interstices of the cable core shall be filled continuously with a compound suitable to prevent water penetration within the cab
