BS EN 50122-1-2011 + A1-2011 (2013)

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  BSI Standards Publication BS EN 50122-1:2011+A1:2011 Incorporating corrigenda November 2012 and May 2013   Railway applications — Fixed installations — Electrical safety, earthing and the return circuit Part 1: Protective provisions against electric shock    BS EN 50122-1:2011+A1:2011BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 50122-1:2011+A1:2011, incorporating corrigendum November 2012.It supersedes BS EN 50122-1:2011which is withdrawn.The start and finish of text introduced or altered by amendment isindicated in the text by tags. Tags indicating changes to CENELEC textcarry the number of the CENELEC amendment. For example, text alteredby CENELEC amendment A1 is indicated by  .The start and finish of text introduced or altered by corrigendumis indicated in the text by tags. Text altered by CENELEC corrigendum November 2012 is indicated in the text by  .In 7.4.1 NOTE 1, reference is made to the TN and TT systems of earthconnection for low-voltage distribution systems. Table 2 shows only TT andTN systems, although other systems are allowed by the NOTE 2. For application in the UK, it should be noted that IT systems are not prohibitedby this standard.Attention is drawn to the fact that work is currently in hand to replacethe United Kingdom special national condition set out in Annex G (5.2.1).Until this national condition is revised, an appropriate risk assessment isconsidered essential if public area clearances of less than the minimum setout in Figure 4 (clause 5.2.1) are to be used.The UK participation in its preparation was entrusted by Technical Committee GEL/9, Railway Electrotechnical Applications to SubcommitteeGEL/9/3, Railway Electrotechnical Applications – Fixed Equipment.A list of organizations represented on this subcommittee can be obtainedon request to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application.© The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 83078 5ICS 29.120.50; 29.280 Compliance with a British Standard cannot confer immunity fromlegal obligations. This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 May 2011. Amendments/corrigenda issued since publication Date Text affected31 July 2011 Implementation of CENELEC amendment A1:201131 November 2012 Implementation of CENELEC corrigendumNovember 201231 May 2013 Additional information included in the nationalforeword    EUROPEAN STANDARD EN 50122-1 :2011 +A1  NORME EUROPÉENNE EUROPÄISCHE NORM J une  2011 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50122-1:2011 E ICS 29.280 Supersedes EN 50122-1:1997  English version Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock  Applications ferroviaires - Installations fixes - Sécurité électrique, mise à la terre et circuit de retour - Partie 1: Mesures de protection contre les chocs électriques Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und Rückleitung - Teil 1: Schutzmaßnahmen gegen elektrischen Schlag This European Standard was approved by CENELEC on 2010-11-16. 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 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 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, Bulgaria, Croatia, 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. Incorporating corrigendum November 2012    Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations), of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. It was submitted to the formal vote and was approved by CENELEC as EN 50122-1 on 2010-11-16. This document supersedes EN 50122-1:1997.  Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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) 2011-11-16  –   latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-11-16 This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directives 96/48/EC (HSR), 2001/16/EC (CONRAIL) and 2008/57/EC (RAIL). See Annex ZZ.  __________ Foreword  to amendment A1   This amendment to the European Standard EN 50122-1:2011 was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations), of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as Amendment A1 to EN 50122-1:2011 on 2011-04-25.  Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed:  –   latest date by which the amendment has to be implementedat national level by publication of an identical national standard or by endorsement (dop) 2012-04-25  –   latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2014-04-25  __________ BS EN 50122-1:2011+A1:2011EN 50122-1:2011+A1:2011 (E)  – 2 –
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