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1、BRITISH STANDARD BS EN 50288-2-2:2001 Multi-element metallic cables used in analogue and digital communication and control Part 2-2: Sectional specification for screened cables characterized up to 100 MHz Work area and patch cord cables The European Standard EN 50288-2-2:2001 has the status of a Bri
2、tish Standard ICS 33.120.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50288-2-2:2001 This British Standard, having been prepared under the direction of the El
3、ectrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 08-2001 ISBN 0 580 37660 5 National foreword This British Standard is the official English language version of EN 50288-2-2:2001. It supersedes BS EN 50168:199
4、6 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wire and waveguides, RF connectors and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: A list of organizat
5、ions 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 Standards Catalogue under the section entitled “International Standard
6、s Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard
7、does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and
8、 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 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pu
9、blication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 50288-2-2 NORME EUROPENNE EUROPISCHE NORMFebruary 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Norma
10、lisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-2-2:2001 E ICS 33.120.20Supersedes EN
11、50168:1994 English version Multi-element metallic cables used in analogue and digital communication and control Part 2-2: Sectional specification for screened cables characterized up to 100 MHz - Work area and patch cord cables Cbles mtalliques lments multiples utiliss pour les transmissions et les
12、commandes analogiques et numriques Partie 2-2: Spcification intermdiaire pour les cbles blinds pour applications jusqu 100 MHz - Cbles de zone de travail et de brassage Mehradrige metallische Daten- und Kontrollkabel fr analoge und digitale bertragung Teil 2-2: Rahmenspezifikation fr geschirmte Kabe
13、l bis 100 MHz - Gerteanschlukabel und Schaltkabel This European Standard was approved by CENELEC on 1999-10-01. 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
14、 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 official versions (English, French, German). A version in any other language made
15、 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 committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany
16、, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50288-2-2:2001- 2 - Foreword This draft European Standard was pre
17、pared by SC 46XC, Multicore, Multipair and Quad Data communication cables, of Technical Committee CENELEC TC 46X, Communication cables. It is submitted to the Unique Acceptance Procedure. This European Standard supersedes EN 50168:1994. The following dates were fixed: -latest date by which the EN ha
18、s to be implemented at national level by publication of an identical national standard or by endorsement(dop)2001-09-01 -latest date by which national standards conflicting with the EN have to be withdrawn(dow) 2002-10-01 This part 2-2 is to be used in conjunction with EN 50288-1. Licensed Copy: she
19、ffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI -3 -EN 50288-2-2:2001 Contents 1Scope4 2Normative references4 3Definitions 4 4Cable construction 4 4.1Conductor.4 4.2Insulation4 4.3Cabling elements5 4.4Identification of cabling elements .5 4.5Screening of cabl
20、ing elements .5 4.6Cable make-up.5 4.7Filling compound 5 4.8Interstitial fillers.5 4.9Screening of the cable core5 4.10 Moisture barriers.5 4.11 Wrapping layers .5 4.12 Sheath5 5Tests and requirements for completed cables6 5.1Electrical tests 6 5.2Mechanical tests.8 5.3Environmental tests8 5.4Fire p
21、erformance tests8 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50288-2-2:2001- 4 - 1Scope This sectional specification covers cables, characterised up to 100 MHz, with an overall screen intended for work area cables to connect a teleco
22、mmunications outlet to the terminal equipment and for patch cord cables to establish connections on a patch panel as defined in EN 50173. Work area cables may also be used as patch cord cables in any distributor of a generic building wiring system to interconnect with equipment or to cross-connect b
23、etween cabling systems. The electrical, mechanical, transmission and environmental performance characteristics of the screened cables, related to their reference test methods, are detailed. This sectional specification is to be read in conjunction with EN 50288-1, the generic specification for multi
24、-element metallic cables used in analogue and digital communication and control, which contains the essential provisions for its application. 2Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are ci
25、ted 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 European Standard only when incorporated in it by amendment or revision. For undated references the latest editi
26、on of the publication referred to applies (including amendments). EN 50173Information technology - Generic cabling systems IEC 60189-2Low-frequency cables and wires with PVC insulation and PVC sheath Part 2: Cables in pairs, triples, quads and quintuples for inside installations IEC 60344Guide to th
27、e calculation of resistance of plain and coated copper conductors of low-frequency cables and wires 3Definitions For the purposes of this European Standard, the definitions given in 50288-1 apply. 4Cable construction 4.1Conductor The conductor shall be solid or stranded and meet the requirements of
28、4.1 of EN 50288-1. The stranded conductor shall consist of seven wires each with a nominal diameter of 0,12 mm to 0,21 mm. The conductor shall be plain or metal coated. 4.2Insulation The insulation shall be either: -polyolefin (polyethylene or polypropylene to the relevant parts of EN 50290-2), or -
29、low smoke zero halogen thermoplastic material to the relevant part of EN 50290-2. The insulation shall meet the requirements of 4.2 of EN 50288-1. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI -5 -EN 50288-2-2:2001 4.3Cabling elements The
30、cable element shall be a pair or a quad. 4.4Identification of cabling elements Unless otherwise specified, the colour coding for identification is given in IEC 60189-2. The colours shall meet the requirements of 4.4 of EN 50288-1. 4.5Screening of cabling elements Where appropriate, screening of the
31、cabling elements shall be applied in accordance with 4.5 of EN 50288-1. When a braid is used the minimum coverage (for mechanical purposes) shall be 60%. When a foil and braid are used the minimum coverage (for mechanical purposes) shall be 40%. 4.6Cable make-up The cable elements shall be laid up i
32、n concentric layer(s) or unit(s) to form the cable core. 4.7Filling compound Not applicable 4.8Interstitial fillers Where fillers are used they shall meet the requirements of 4.8 of EN 50288-1. 4.9Screening of the cable core The screening of the cable core shall be applied in accordance with 4.9 of
33、EN 50288-1. When a braid is used the minimum coverage (for mechanical purposes) shall be 60%. When a foil and braid are used the minimum coverage (for mechanical purposes) shall be 40%. 4.10Moisture barriers Not applicable 4.11Wrapping layers Where wrapping layers are used they shall be in accordanc
34、e with 4.11 of EN 50288-1. 4.12Sheath The sheath shall consist of low smoke halogen free flame retardant thermoplastic material in accordance with the relevant part of EN 50290-2. The sheath shall meet the requirements of 4.12 of EN 50288-1. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:
35、15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50288-2-2:2001- 6 - 5Tests and requirements for completed cables When tested as directed by EN 50288-1 the limits given in the tables of this standard shall apply. 5.1Electrical tests 5.1.1Low-frequency and d.c. electrical measurements EN 50288-1 c
36、lause no. ParameterRequirement 5.1.1.1Conductor loop resistanceThe maximum value shall be calculated in accordance with IEC 60344 and shall be 45 /100 m 5.1.1.2Conductor resistance unbalance 3% 5.1.1.3Dielectric strength - conductor/conductor - conductor/screen 1 kV d.c. or 700 V a.c. for 1 min or 2
37、,5 kV d.c. or 1,7 kV a.c. for 2 s 5.1.1.4Insulation resistance 500 M km 5.1.1.5Mutual capacitanceNo requirement specified 5.1.1.6Capacitance unbalance to earth 1600 pF/km Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI -7 -EN 50288-2-2:2001
38、5.1.2 High-frequency electrical and transmission measurements EN 50288-1 clause no. ParameterRequirement 5.1.2.1Velocity of propagation 0,60 c at 1 Mhz 0,65 c at 10 Mhz 0,65 c at 100 MHz 5.1.2.2Propagation delay difference (skew) 40 ns/100 m at 100 MHz f.f.s 5.1.2.3Attenuation1) 5.1.2.4Attenuation u
39、nbalance, near end (LCL) 40 dB at 1 Mhz 30 dB at 10 MHz f.f.s 20 dB at 100 MHz f.f.s 5.1.2.5Near-end crosstalk2) 5.1.2.6Far-end crosstalkNot applicable 5.1.2.7Power sum (PS)Not applicable 5.1.2.8Characteristic impedance3) 5.1.2.9Return loss3) 23 dB from 10 MHz to 100 MHz 5.1.2.10Coupling attenuation
40、 55 dB from 30 MHz to 100 MHz f.f.s 55 - 20log10(f/100) dB from 100 MHz to 1000 MHz f.f.s 5.1.2.11Transfer impedance4) 50 m/m at 1,0 MHz 100 m/m at 10,0 MHz 5.1.2.12Screening attenuation 35 dB up to 100 MHz f.f.s 1)The attenuation shall be better than or equal to a curve fitting the specified values
41、 over the whole frequency range. Depending on the conductor size and cable impedance, improved performance cables are available for use, e.g. 7 x 0,2 mm 120 cable gives: 2)The near-end crosstalk shall be better than or equal to a curve fitting the specified values over the whole frequency range. 3)E
42、ITHER the input impedance shall be measured OR the mean impedance AND return loss shall be measured. For the measurement of return loss a test sample having a round trip loss 40 dB at any measured frequency shall be used. 4)It is anticipated that the values of transfer impedance at higher frequencie
43、s than specified will be covered by screening attenuation 1410162031,2562,5100MHz 3,26,59,912,313,817,725,733,0dB/100m 1410162031,2562,5100MHz 6253474442403532dB Nominal Z100120150 input Z, 1 - 100 MHz(10015)(12015)(15015) mean Z, 10 - 100 MHz(10010)(12010)(15010) MHz1410162031,2562,5100 dB/100m2,44
44、,67,08,710,012,016,520,0 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50288-2-2:2001- 8 - 5.2Mechanical tests EN 50288-1 clause no. ParameterRequirement 5.2.1Conductor elongation at break 10% 5.2.2Shrinkage of insulation 5% for 1 h at
45、100 C 2C 5.2.3Crush resistance of the cableAny change in the transmission characteristics shall remain within the specified limits 5.2.4Impact resistance of the cableAny change in the transmission characteristics shall remain within the specified limits 5.2.5Abrasion resistance of the sheath marking
46、s Markings shall remain legible 5.2.6Simulated installation testing of the cable Any change in the transmission characteristics shall remain within the specified limits 5.2.7Tensile performanceAny change in the transmission characteristics shall remain within the specified limits 5.3Environmental te
47、sts EN 50288-1 clause no. ParameterRequirement 5.3.1Cold bend performance of the cableNo cracks when examined visually without magnification 5.4Fire performance tests Under consideration. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank
48、 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 08:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50288-2-2:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents th
49、e UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It 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 Sta