1、BRITISH STANDARDBS EN 50423-2:2005Overhead electrical lines exceeding AC 1 kV up to and including AC 45 kV Part 2: Index of National Normative AspectsThe European Standard EN 50423-2:2005 has the status of a British StandardICS 29.240.20 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g4
2、4g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 50423-2:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 December 2005 BSI 5 December 2005ISB
3、N 0 580 45604 8 National forewordThis British Standard is the official English language version of EN 50423-2:2005.The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead lines, which has the responsibility to: aid enquirers to understand the text; present to th
4、e 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 promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to
5、 its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this 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 Electroni
6、c 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.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis docu
7、ment comprises a front cover, an inside front cover, the EN title page, pages 2 and 3 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 50423-2 NORME EUROPENNE
8、 EUROPISCHE NORM January 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any f
9、orm and by any means reserved worldwide for CENELEC members. Ref. No. EN 50423-2:2005 E ICS 29.240.20 English version Overhead electrical lines exceeding AC 1 kV up to and including AC 45 kV Part 2: Index of National Normative Aspects Lignes lectriques ariennes dpassant 1 kV AC jusqu 45 kV AC Partie
10、 2: Liste des Aspects Normatifs Nationaux Freileitungen ber AC 1 kV bis einschlielich AC 45 kV Teil 2: Index der NNA (Nationale Normative Festlegungen) This European Standard was approved by CENELEC on 2004-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which st
11、ipulate the conditions for 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 Stan
12、dard exists in three official 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 natio
13、nal electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Ki
14、ngdom. EN 50423-2:2005 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC 11, Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.). The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50423-2 on 2004-10-01.
15、 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) 2005-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-10-01 _ 3 EN 50
16、423-2:2005 Text of EN 50423-2 Country code Origin Ref AT Austrian National Committee EN 50423-3-1 BE Belgian National Committee EN 50423-3-2 CH Swiss National Committee EN 50423-3-3 DE German National Committee EN 50423-3-4 DK Danish National Committee No NNA ES Spanish National Committee EN 50423-3
17、-6 FI Finnish National Committee EN 50423-3-7 FR French National Committee EN 50423-3-8 GB British National Committee EN 50423-3-9 GR Greek National Committee No NNA available IE Irish National Committee EN 50423-3-11 IS Iceland National Committee EN 50423-3-12 IT Italian National Committee EN 50423
18、-3-13 LU Luxemburg National Committee No NNA available NL Netherlands National Committee EN 50423-3-15 NO Norvegian National Committee EN 50423-3-16 PT Portuguese National Committee EN 50423-3-17 SE Swedish National Committee EN 50423-3-18 CZ Czech National Committee EN 50423-3-19 MT Malta Standards
19、 Authority No NNA HU Hungarian Standards Institution No NNA available SK Slovak Standards Institution No NNA available LT Lithuanian Standards Board No NNA available BS EN 50423-2:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsib
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