1、BRITISH STANDARD BS EN 50117-3-1:2002 Coaxial cables Part 3-1: Sectional specifications for cables used in Telecom applications Miniaturized cables used in digital communication systems The European Standard EN 50117-3-1:2002 has the status of a British Standard ICS 33.120.10 BS EN 50117-3-1:2002 Th
2、is 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 September 2002 BSI 6 September 2002 ISBN 0 580 40342 4 National foreword This British Stan
3、dard is the official English language version of EN 50117-3-1:2002. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires and waveguides, R.F. connectors and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, whi
4、ch 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 referred to in this document may be found in the BSI Catalogue under the s
5、ection 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 provisions of a contract. Users are responsible for its correct application
6、. 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, or proposals for change, and keep the UK interests informed; monitor
7、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 10, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the
8、document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50117-3-1 NORME EUROPENNE EUROPISCHE NORM July 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrot
9、echnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50117-3-1:2002 E ICS 33.120.10 English version Coaxial cables Part 3-1: Sectional specifications for
10、 cables used in Telecom applications - Miniaturized cables used in digital communication systems Cbles coaxiaux Partie 3-1: Spcification intermdiaire pour les cbles utiliss dans les applications de tlcommunication - Cbles miniaturiss utiliss dans les rseaux de communication numriques Koaxialkabel Te
11、il 3-1: Rahmenspezifikation fr Kabel fr Anwendungen in der Telekommunikation - Miniaturkabel fr digitale Kommunikationssysteme This European Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
12、r giving this European Standard the status of a national standard without any alteration. 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 offi
13、cial 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 notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical comm
14、ittees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.EN 50117-3-1:2002 - 2 - Foreword This European Standard was prepared by S
15、C 46XA, Coaxial cables, of Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50117-3-1 on 2002-03-01. The following dates were fixed: - latest date by which the EN has to be implemented a
16、t national level by publication of an identical national standard or by endorsement (dop) 2003-03-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-03-01 Annexes designated “informative“ are given for information only. In this standard, annex A
17、is informative. _ 3 EN 50117-3-1:2002 Contents 1 Scope . 4 2 Normative references. 4 3 Definitions 5 4 Requirements for cable construction 5 4.1 General. 5 4.2 Inner conductor . 5 4.3 Dielectric. 5 4.4 Outer conductor or screen . 5 4.5 Filling compounds 6 4.6 Moisture barriers . 6 4.7 Wrapping layer
18、s 6 4.8 Sheath 6 4.9 Metallic protection . 6 4.10 Cable integral suspension strand (messenger wire) 6 4.11 Oversheath . 6 4.12 Fauna proofing 6 4.13 Chemical and/or environmental proofing. 6 4.14 Cable identification 6 4.14.1 Sheath marking. 7 4.14.2 Labelling . 7 5 Test methods for completed cables
19、. 7 5.1 Electrical tests. 8 5.1.1 Low-frequency and d.c. electrical measurements 8 5.1.2 High-frequency electrical and transmission measurements . 8 5.2 Mechanical tests 9 5.3 Environmental tests . 9 5.4 Fire performance tests 9 Annex A (informative) Crosstalk 10 Table 1 Low frequency and d.c. elect
20、rical measurements . 8 Table 2 High frequency electrical and transmission measurements. 8 Table 3 Mechanical tests. 9 Table 4 Environmental tests 9 Table 5 Fire performance test methods 9EN 50117-3-1:2002 - 4 - 1 Scope This European Standard relates to EN 50117-1 and should be read in conjunction wi
21、th this generic specification. This standard applies to single and/or multiple miniaturised coaxial cables used in digital communication systems on the Telecom applications. The cables covered by this standard are used for the internal wiring of and interconnection between switching-, transmission-,
22、 multiplexing- and cross-connect equipment and for the connections to the digital distribution frame. These coaxial cables are designed for the transmission of E1 (2 Mbit/s), E2 (8 Mbit/s), E3 (34 Mbit/s), E4 (140 Mbit/s), STM (155 Mbit/s), DS1 (1,5 Mbit/s), DS2 (6 Mbit/s) and DS3 (34 Mbit/s) signal
23、s. Cables are connected to the equipment via a coaxial connector or other suitable ways. The purpose of this standard is to specify the applicable test methods and requirements for the electrical, mechanical, environmental and fire performance of the cables. The cables covered by this standard are i
24、ntended to be used with voltages up to 50 V a.c. and/or 120 V d.c. 2 Normative references This 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
25、hereafter. For dated references, subsequent amendments to or revisions of any of these publications 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 5011
26、7-1 Coaxial cables used in cabled distribution networks Part 1: Generic specification EN 50290-1-2 1) Communication cables Part 1-2: Definitions EN 50290-2-20 Communication cables Part 2-20: Common design rules and construction - General EN 50290-2-27 Communication cables Part 2-27: Common design ru
27、les and construction Halogen free flame retardant thermoplastic sheathing compounds EN 50290-4-1 Communication cables Part 4-1: General considerations for the use of cables Environmental conditions and safety aspects1)At draft stage. 5 EN 50117-3-1:2002 3 Definitions For the purposes of this Europea
28、n Standard, the definitions of EN 50290-1-2 and EN 50117-1 apply. 4 Requirements for cable construction 4.1 General Maximum current carrying ampacity shall be in accordance with subclause 4.1 of EN 50117-1 if applicable. 4.2 Inner conductor The conductor shall meet the requirements of 4.2 of EN 5011
29、7-1 and shall be solid or stranded. Individual wires can be plain or metal coated. 4.3 Dielectric The dielectric material(s) shall be be in accordance with 4.3 of EN 50117-1 and shall consist of polyolefin materials according to the relevant part of EN 50290-2-20. The foamed dielectric is used to re
30、duce the outer diameter. For special cases, other materials may be used on agreement between supplier and customer. The diameter over dielectric and the maximum allowed ovality shall be given in the relevant Detail Specification. 4.4 Outer conductor or screen The construction and material of the out
31、er conductor shall be as specified in the Detail Specification. The outer conductor may be composed of a) a braid of plain, tinned or silvered annealed copper wires. Joints in the braiding wires shall be soldered, twisted or woven-in and there shall be no joint in the complete braid. The braid shall
32、 be evenly applied, b) a layer of metal or metallized plastic foil applied with a sufficient overlap covered with a braid as in item a) above. The wires of braid shall be of plain copper where the metal of foil is copper and of tinned copper where the metal of foil is aluminium, c) a high permeabili
33、ty alloy tape, helically wound with overlap, d) a longitudinal foil of copper applied with overlap, or any combination of a), b), c) and d). Item c) shall not be used alone. For braid constructions, the braid angle shall be between 15 and 45.EN 50117-3-1:2002 - 6 - 4.5 Filling compounds Not applicab
34、le 4.6 Moisture barriers Not applicable 4.7 Wrapping layers Not applicable 4.8 Sheath Sheath material(s) shall meet the requirements of EN 50290-2-27 for halogen free flame retardant materials. The sheath shall also meet the requirements of 4.8 of EN 50117-1. For special cases, other materials may b
35、e used on agreement between supplier and customer. 4.9 Metallic protection Not applicable 4.10 Cable integral suspension strand (messenger wire) Not applicable 4.11 Oversheath Not applicable 4.12 Fauna proofing Not applicable 4.13 Chemical and/or environmental proofing Not applicable 4.14 Cable iden
36、tification Cable identification shall be in accordance with 4.14 of EN 50117-1. 7 EN 50117-3-1:2002 4.14.1 Sheath marking Sheath marking shall be in accordance with a non-degradable print containing the following minimum information: - the numbering of the relevant standard; - the designation of the
37、 cable; - Euro-class; - name of supplier. EXAMPLE : EN 50117-3-1 xxx Euro-class C yyy 4.14.2 Labelling Unless otherwise specified in the detail specification drums or coils shall be provided with a label with a non degradable print containing the following minimum information: - the numbering of the
38、 relevant standard; - the designation of the cable; - Euro-class; - name of supplier; - batch part number; - length of cable. EXAMPLE : EN 50117-3-1 xxx Euro-class C yyy 03/00 543 m 5 Test methods for completed cables When tested in accordance with the requirements of EN 50117-1, the requirements gi
39、ven below shall apply.EN 50117-3-1:2002 - 8 - 5.1 Electrical tests 5.1.1 Low-frequency and d.c. electrical measurements Table 1 - Low-frequency and d.c. electrical measurements EN 50117-1 Subclause Parameter Requirement 5.1.1.1 Conductor resistance Applicable 5.1.1.2 Dielectric strength 2 kV d.c. or
40、 1,5 kV a.c. for 1 min 5.1.1.3 Insulation resistance 10 4M km 5.1.1.4 Mutual capacitance No requirement specified 5.1.1.5 Voltage test of sheath a 5.1.1.6 Discharge (corona) test Not applicable 5.1.1.7 Voltage proof Not applicable 5.1.1.8 Power rating Not applicable a Under consideration. 5.1.2 High
41、-frequency electrical and transmission measurements Table 2 - High-frequency electrical and transmission measurements EN 50117-1 Subclause Parameter Requirement 5.1.2.1 Velocity of propagation May be specified in the detail specification 5.1.2.2 Longitudinal attenuation To be specified and measured
42、at frequencies 1, BR a / 2 MHz at least 5.1.2.3 Characteristic impedance 75 3 5.1.2.4 Return loss b RL = 20 dB min in the frequency range specified in the detail specification 5.1.2.5 Regularity of impedance Not applicable 5.1.2.6 Transfer impedance 10 m /m from 1 MHz to 30 MHz 5.1.2.7 Screening att
43、enuation under consideration - Crosstalk see Annex A a BR: Bit Rate (e.g.: BR = 140 Mbits/s - f = 70 MHz). b3 peak return loss values up to 4 dB lower than the stated specified limit are permissible. 9 EN 50117-3-1:2002 5.2 Mechanical tests Table 3 - Mechanical tests EN 50117-1 Subclause Parameter R
44、equirement 5.2.1 Conductor elongation at break Applicable for copper clad steel conductors only 5.2.2 Adhesion of dielectric Perform test on a 25 mm sample Force required shall be 0,1 MPa F 1,0 MPa 5.2.3 Crush resistance of the cable Load = 700 N After a 5 minute recovery, the return loss requiremen
45、ts shall be satisfied 5.2.4 Impact resistance of the cable Not applicable 5.2.6 Abrasion resistance of the sheath markings Not applicable 5.2.7 Bending under tension Not applicable 5.2.8 Tensile performance Not applicable 5.3 Environmental tests Table 4 - Environmental tests EN 50117-1 Subclause Par
46、ameter Requirement 5.3.1 Cold bend performance of the cable Not applicable 5.3.2 Water penetration test Not applicable 5.3.3 Moisture permeation test Not applicable 5.3.4 Resistance to solvents and contaminating fluids Not applicable 5.3.5 Climatic test Not applicable 5.3.6 Eolian vibration Not appl
47、icable 5.4 Fire performance tests 2) When intended to be permanently installed in buildings, these cables fall under the requirements of the Construction Products Directive (CPD) for reaction to fire. Appropriate requirements are to be found in EN 50290-4-1. Table 5 - Fire performance test methods 2
48、) EN 50117-1 Subclause Parameter Requirement2)Under consideration.EN 50117-3-1:2002 - 10 - Annex A (informative) Crosstalk The Near End Cross Talk (NEXT) between two single coaxial cables, laid side by side, should be measured. The frequency range and the requirements be stated in the detail specifi
49、cation. The two coaxial cables are bound together in a length of 50 m. At the far end, the braids are connected together. At the near end, the braids are connected together and to the receiver ground. The two cables are terminated on their nominal impedance. Special care should be taken to avoid influence between transmitter and receiver.blankBS EN 50117-3-1:2002 BSI 389 Chiswick High Road London W4 4
