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1、Licensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIBRITISH STANDARDBS EN50173-5:2007Information technology Generic cabling systems Part 5: Data centresThe European Standard EN 50173-5:2007 has the status of aBritish StandardICS 33.040.50 BS EN 50173-5:2007National forewordThis Briti
2、sh Standard is the UK implementation of EN 50173-5:2007.The UK participation in its preparation was entrusted to Technical CommitteeTCT/7, Telecommunications Installation requirements.A list of organizations represented on this committee can be obtained on request to its secretary.In addition to the
3、 requirements listed in subclause 1.2, conformance toBS EN 50173-5:2007 also requires the application of BS 6701.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 Standard cannot confer
4、 immunity from legal obligations.Licensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIAmd. No.DateCommentsThis British Standard was published under the authority of the Standards Policy and Strategy Committeeon 31 August 2007 BSI 2007ISBN 978 0 580 56056 9Amendments issued since publi
5、cationEUROPEAN STANDARDEN 50173-5NORME EUROPENNEEUROPISCHE NORM May 2007 ICS 33.040.50English versionInformation technology - Generic cabling systems - Part 5: Data centresTechnologies de linformation - Systmes de cblage gnrique - Partie 5: Centres de donnesInformationstechnik - Anwendungsneutrale K
6、ommunikationskabelanlagen - Teil 5: RechenzentrenLicensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIThis European Standard was approved by CENELEC on 2007-04-11. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving t
7、his 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 version
8、s (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 committees of Aus
9、tria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.C
10、ENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC -All rights of exploitation in any form and by any means reserved worldw
11、ide for CENELEC members.Ref. No. EN 50173-5:2007 E- 19 -EN 50173-5:2007Licensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIForewordThis European Standard was prepared by the Technical Committee CENELEC TC 215, Electrotechnical aspects of telecommunication equipment.The text of the dr
12、aft was submitted to the formal vote and was approved by CENELEC as EN 50173-5 on2007-04-11.The following dates were fixed:national standard or by endorsement(dop)2008-05-01latest date by which the national standards conflicting with the EN have to be withdrawn(dow)2010-05-01latest date by which the
13、 EN has to be implemented at national level by publication of an identicalThe European Standards EN 50173:1995 and EN 50173-1:2002 have been developed to enable the application-independent cabling to support ICT applications in office premises. Their basic principles, however, are applicable to othe
14、r types of applications and in other types of premises.TC 215 has decided to establish relevant European Standards which address the specific requirements of these premises. In order to point out the commonalities of these cabling design standards, these EN are published as individual parts of the s
15、eries EN 50173, thus also acknowledging that standards users recognize the designation “EN 50173” as a synonym for generic cabling design.At the time of publication of this European Standard, series EN 50173 comprises the following standards: EN 50173-1Information technology Generic cabling systems
16、Part 1: General requirementsEN 50173-2Information technology Generic cabling systems Part 2: Office premisesEN 50173-3Information technology Generic cabling systems Part 3: Industrial premisesEN 50173-4Information technology Generic cabling systems Part 4: HomesEN 50173-5Information technology Gener
17、ic cabling systems Part 5: Data centresLicensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIContentsIntroduction . 51Scope and conformance . 81.1Scope . 81.2Conformance . 82Normative references . 93Definitions and abbreviations . 93.1Definitions . 93.2Abbreviations . 104Structure of t
18、he generic cabling system in data centres . 114.1General . 114.2Functional elements . 114.3General structure and hierarchy . 114.4Cabling subsystems . 124.5Accommodation of functional elements . 134.6Interfaces . 144.7Dimensioning and configuring . 145Channel performance in data centres . 175.1Gener
19、al . 175.2Environmental performance . 185.3Transmission performance. 196Reference implementations in data centres. 206.1General . 206.2Balanced cabling. 206.3Optical fibre cabling . 267Cable requirements in data centres. 277.1General . 277.2Balanced cables . 277.3Optical fibre cables . 288Connecting
20、 hardware requirements in data centres . 288.1General requirements . 288.2Connecting hardware for balanced cabling . 288.3Connecting hardware for optical fibre cabling. 299Requirements for cords and jumpers in data centres . 299.1Jumpers . 299.2Balanced cords . 29Licensed copy:PONTYPRIDD COLLEGE, 04
21、/03/2008, Uncontrolled Copy, BSI9.3Optical fibre cords . 29Annex A (normative) Link performance limits . 30Annex B (normative) Channel insertion loss models for high bit rate, multimode, optical fibre applications . 31Bibliography . 32FiguresFigure 1 - Schematic relationship between the EN 50173 ser
22、ies and other relevant standards . 6Figure 2 - Structure of generic cabling . 12Figure 3 - Hierarchical structure of generic cabling . 12Figure 4 - Example of accommodation of functional elements . 14Figure 5 - Test and equipment interfaces . 15Figure 6 - Connection of functional elements providing
23、redundancy . 16Figure 7 - The External Network Interface . 16Figure 8 - Example of a channel . 18Figure 9 - Example of a system showing the location of cabling interfaces . 18Figure 10 - Zone distribution cabling models . 22Figure 11 Main distribution cabling model. 23Figure 12 - Network access cabl
24、ing model . 25Figure A.1 - Link options. 30TablesTable 1 - Contextual relationship between EN 50173 series and other standards relevant for information technology cabling systems . 7Table 2 - Zone distribution channel equations . 21Table 3 - Main distribution channel equations . 24Table 4 - Network
25、access cabling channel equations . 26Table 5 - Optical fibre channel parameters . 27Table B.1 Maximum channel attenuation allocated to connecting hardware . 31Table B.2 - Maximum connecting hardware attenuation . 32Licensed copy:PONTYPRIDD COLLEGE, 04/03/2008, Uncontrolled Copy, BSIIntroductionThe importance of the information technology cabling infrastructure is similar to that of other utilities such as heating, lighting and electricity supplies. As with other utilities, interruptions to service can have serious impact. Poor quality of service due to lack of plann
