(BS英国标准)BS EN 50468-2009 Resistibility requirements to overvoltages and overcurrents due to lightning for equipment having telecommunication ports.doc
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1、BS EN 50468:2009BSI British StandardsResistibility requirements to overvoltages and overcurrents due to lightning for equipment having telecommunication portsNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWraising standards worldwideBS EN 50468:2009BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of EN 50468:2009.The UK participation in its preparation was entrusted to Technical CommitteeGEL/81, Protection against lightning.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does
3、 not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 56040 8ICS 29.120.50; 91.120.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the
4、authority of the StandardsPolicy and Strategy Committee on 31 July 2009Amendments issued since publicationAmd. No. Date Text affectedBS EN 50468:2009EUROPEAN STANDARDEN 50468NORME EUROPENNEEUROPISCHE NORM April 2009 ICS 29.120.50; 91.120.40English versionResistibility requirements to overvoltages an
5、d overcurrents due to lightning for equipment having telecommunication portsExigences de tenueaux surtensions et aux surintensits dues la foudre pour les matriels avec port de communicationAnforderungen zur Zerstrfestigkeit von Einrichtungenmit Telekommunikationsanschluss gegen berspannungenund -str
6、me infolge BlitzschlagsThis European Standard was approved by CENELEC on 2009-02-01. 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 alteration.Up-to-date list
7、s 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 by translation under the res
8、ponsibility 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, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, German
9、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.CENELECEuropean Committee for Electrotechnical Standardization Comit Europen de Normalisation E
10、lectrotechnique Europisches Komitee fr Elektrotechnische NormungCentral Secretariat: avenue Marnix 17, B - 1000 Brussels 2009 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50468:2009 (fragment 60) EForewordThis European Standard w
11、as prepared by the Technical Committee CENELEC TC 81X, Lightning protection.The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50468 on 2009-02-01.The following dates were fixed:latest date by which the EN has to be implemented at national level by publication o
12、f an identicalnational standard or by endorsement(dop)2010-02-01latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2012-02-01BS EN 50468:2009EN 50468:2009 11 Contents1Scope . 42Normative references . 43Terms, definitions and abbreviations . 54Reference config
13、uration . 55Resistibility requirements . 66Resistibility test requirements . 66.1For ports connected to balanced copper cabling . 76.1.1Lightning test conditions for ports connected to external balancedcopper cabling . 76.2For ports connected to external d.c or a.c dedicated power feeding cables. 86
14、.2.1Lightning test conditions for ports connected to external d.c or a.cdedicated power feeding cables . 86.3For mains power ports . 86.3.1Test conditions for mains power ports . 8Annex A (informative) ITU-T publications (K-recommendations) with relation to TE. 10Bibliography. 11FiguresFigure 1 Equi
15、pment with telecommunication ports installed at customers premises . 6Figure 2 TE configurations . 9Figure A.1 ITU-T publications (K-recommendations) with relation to TE . 101ScopeThis European Standard specifies the minimum level of resistibility of equipment having telecommunication port(s) to ove
16、rvoltages and overcurrents.This European Standard covers telecommunication equipment installed at customer premises as shown in Figure 1.Overvoltages or overcurrents covered by this European Standard are surges due to direct or indirect lightning on the telecommunication line plant.Overvoltages or o
17、vercurrent not covered by this European Standard areshort-term induction of alternating voltages from electric power systems (including electrified railway),earth potential rise due to power faults or load switching,direct contacts between telecommunication lines and low voltage power lines.This Eur
18、opean Standard is intended for use by network (public/private) operators and the equipment manufacturers.This European Standard applies to equipment having telecommunication port(s) connected to external conductors, i.e. conductor located outside the customers building.The tests are type tests and,
19、although they are applicable to a complete system, it is recognised that they may be applied to individual items of equipment during development and design work.2Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only
20、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.CLC/TR 50450:2006, Resistibility requirements for equipment having (a) telecommunication port(s) EN 60950-1:2006, Information technology equipment Safety Part 1: Genera
21、l requirements(IEC 60950-1:2005, mod.)IEC 60050-701:1988, International Electrotechnical Vocabulary (IEV) Chapter 701: Telecommunications, channels and networksITU-T Recommendation K.21, Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrentsITU-T
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