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1、BRITISH STANDARD BS EN50288-6-2:2003Multi-element metallic cables used in analogue and digital communication and control Part 6-2: Sectional specification for unscreened cables characterised up to 250 MHz Work area and patch cord cablesThe European Standard EN 50288-6-2:2003 has the status of aBriti
2、sh StandardICS 33.120.10 BS EN 50288-6-2:2003National forewordThis British Standard is the official English language version ofEN 50288-6-2:2003.The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive
3、 components and accessories, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: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 inform
4、ed;monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in th
5、is 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 the necessary provisions of a con
6、tract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on2 February 2004 BSI 2 February 2004ISBN 0 580
7、 43346 3Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amd. No.DateCommentsAmendments issued since publicationEUROPEAN STAND
8、ARD EN 50288-6-2 NORME EUROPENNE EUROPISCHE NORM December 2003 ICS 33.120.10 English version Multi-element metallic cables used in analogue and digital communication and controlPart 6-2: Sectional specification for unscreened cables characterised up to 250 MHz -Work area and patch cord cablesCbles m
9、talliques lments multiples utiliss pour les transmissionset les commandes analogiques et numriques Partie 6-2: Spcification intermdiaire pour les cbles non blinds pour applications jusqu 250 MHz - Cbles de zone de travail et de brassage Mehradrige metallische Daten- und Kontrollkabel fr analoge und
10、digitale bertragung Teil 6-2: Rahmenspezifikation fr ungeschirmte Kabel bis 250 MHz - Gerteanschlusskabel und Schaltkabel This European Standard was approved by CENELEC on 2003-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
11、ing 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 official
12、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 committee
13、s of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Co
14、mit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-6-2:2003 E 7 EN 5
15、0288-6-2:2003 ForewordThis European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data communication 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 50288-6
16、-2 on 2003-10-01. 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 (dop) 2004-10-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow)
17、 2006-10-01 This Part 6-2 is to be read in conjunction with EN 50288-1. Contents Page1Scope . 42Normative references . 43Definitions. 44Cable construction. 44.1Conductor . 44.2Insulation . 54.3Cabling elements . 54.4Identification of cabling elements . 54.5Screening of cabling elements . 54.6Cable m
18、ake-up . 54.7Filling compound . 54.8Interstitial fillers . 54.9Screening of the cable core . 54.10 Moisture barriers . 54.11 W rapping layers . 54.12 Sheath . 55Tests and requirements for completed cables . 65.1Electrical tests . 65.2Mechanical tests . 85.3Environmental tests . 95.4Fire performance
19、tests . 9 1ScopeThis sectional specification covers unscreened cables, characterised up to 250 MHz, to be used as work area cables to connect a telecommunications outlet to the terminal equipment and for patch cord cables to establish connections on a patch panel as defined in EN 50173. Work area ca
20、bles 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 between cabling systems. The electrical, mechanical, transmission and environmental performance characteristics of the unscreened cables, related to th
21、eir reference test methods, are detailed. This sectional specification is to be read in conjunction with EN 50288-1, which contains the essential provisions for its application. 2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications
22、. These normative references are cited at the appropriate places in the text and the cited publications are listed hereafter. For dated references, subsequent amendments to or revisions of these publications apply to this European Standard only when incorporated in it by amendment or revision. For u
23、ndated references, the latest edition of the cited publication applies, together with any amendments. EN 50173 Information technology - Generic cabling systems EN 50288-1 Generic specification for multi-element metallic cables used in analogue and digital communication and control EN 50289 Series Co
24、mmunication cables - Specifications for test methods EN 50290 Series Communication cables IEC 60189-2 Low-frequency cables and wires with PVC insulation and PVC sheath - Part 2: Cables in pairs, triples, quads and quintuples for inside installations 3DefinitionsFor the purposes of this European Stan
25、dard the definitions of EN 50288-1 apply. 4Cable construction4.1ConductorThe conductor shall be solid or stranded copper and meet the requirements of 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 solid conductor nominal
26、 diameter shall be 0,4 mm to 0,8 mm. The conductor shall be plain or metal coated. 4.2InsulationThe insulation shall be of a suitable material according to the relevant part of EN 50290-2. 4.3Cabling elementsThe cable element shall be a pair or a quad. 4.4Identification of cabling elementsUnless oth
27、erwise 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 elementsNot applicable. 4.6Cable make-upThe cable elements shall be laid up in concentric layer(s) or units to form the cable core. 4.
28、7Filling compoundNot applicable. 4.8Interstitial fillersWhere fillers are used they shall meet the requirements of 4.8 of EN 50288-1. 4.9Screening of the cable coreNot applicable. 4.10 Moisture barriersNot applicable. 4.11 Wrapping layersWhere wrapping layers are used they shall be in accordance wit
29、h 4.11 of EN 50288-1. 4.12 SheathThe sheath shall be of a suitable material according to the relevant part of EN 50290-2. 5Tests and requirements for completed cablesThe following tables give the tests to be applied, together with the respective limits, in order to demonstrate compliance with this s
30、pecification. 5.1Electrical tests5.1.1Low-frequency and d.c. electrical measurementsEN 50288-1Subclause no.ParameterRequirement5.1.1.1 Conductor loop resistance 29,0 /100 m 5.1.1.2 Conductor resistance unbalance 2,0 % 5.1.1.3Dielectric strength conductor/conductor 1,0 kV d.c. or 0,7 kV a.c. for 1 mi
31、n or 2,5 kV d.c. or 1,7 kV a.c. for 2 s 5.1.1.4Insulation resistance 500 M km using 100 V - 500 V test voltage 5.1.1.5 Mutual capacitance No requirement specified 5.1.1.6 Capacitance unbalance to earth 1 600 pF/km 1 4 10 16 20 31,2562,5 100155 200250 MHz 66,065,359,356,254,851,947,4 44,341,4 39,838,
32、3 dB 5.1.2High-frequency electrical and transmission measurementsEN 50288-1Subclause no.ParameterRequirement 5.1.2.1Velocity of propagation Phase delay 534+36/f ns/100 m, 1 MHz f 250 MHz 5.1.2.2Propagation delay difference (skew) 40 ns/100 m at 100 MHz 5.1.2.3Longitudinal attenuation 2) 3) 4) 1 4 10
33、 16 20 31,2562,5 100155 200250 MHz 3,1 5,7 9,0 11,412,816,123,2 29,937,9 43,749,5 dB/100 m 1,5(1,82f+0,0169f+0,25/f), 1 MHz f 250 MHz 5.1.2.5Near-end crosstalk (NEXT) 1) 2) 74,3-15log(f) 1 MHz f 250 MHz (maximum 66 dB) 5.1.2.7.1 Power sum near-end crosstalk 2) (PSNEXT) 1 4 10 16 20 31,2562,5 100155
34、200250 MHz 64,063,357,354,252,849,945,4 42,339,4 37,836,3 dB 72,3-15log(f) 1 MHz f 250 MHz (maximum 64 dB) 4 8 101620 31,2562,5 100 155 200 250 MHz 23,124,525,025,025,023,621,5 20,118,8 18,017,3 dB 1 4 101620 31,2562,5 100 155 200 250 MHz 64,055,047,043,041,037,131,1 27,023,2 21,019,0 dB 1 4 101620
35、31,2562,5 100 155 200 250 MHz 66,058,050,045,944,040,134,1 30,026,2 24,022,0 dB EN 50288-1Subclause no.ParameterRequirement 5.1.2.6 Equal level far-end crosstalk 2) (ELFEXT) 70-20log(f) , 1 MHz f 250 MHz (maximum 66 dB), values referenced to 100 m 5.1.2.7.2 Power sum equal level far-end crosstalk 2)
36、 (PSELFEXT) 67-20log(f), 1 MHz f 250 MHz (maximum 64 dB), values referenced to 100 m 5.1.2.8Mean characteristic impedance 100 5 , 120 5 , at 100 MHz 5.1.2.9Return loss 2) 5) 20+5log(f), 4 MHz f 10 MHz; 25 dB, 10 MHz f 20 MHz; 25-7log(f/20), 20 MHz f 250 MHz; f.f.s. 5.1.2.4Near-end unbalance attenuation 40-10log(f) dB, 1 MHz f 250 MHz f.f.s 5.1.2.10Coupling attenuation 40 dB, 30 MHz f 100 MHz f.f.s 40-20log(f/100) dB, 100 MHz f 1 000 MHz f.f.s 1) For hybrid and multi-u