Railway applications Fixed installations- D.C. switchgear -
Part7-2:Measurement controlandprotectiondevicesforspecificuseind.c.traction systems-Isolatingcurrenttransducersandothercurrentmeasuringdevices
Nationalforeword
This British Standard is the official English language version of EN 50123-7-2:2003. It supersedes BS EN 50123-7-2:1999 which is withdrawn.
The UK participation in its preparation was entrusted by Technical Committeeequipment which has the responsibility to: GEL/9 Railway electrotechnical applications to Submittee GEL/9/3 Fixed
present to the responsible international/European mittee any aid enquirers to understand the text;enquiries on the interpretation or proposals for change and keep theUK interests informed;promulgate them in the UK. monitor related international and European developments and
A list of organizations represented on this submittee can be obtained onrequest to its secretary.
Cross-references
The British Standards which implement international or Europeanpublications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index" orby 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 acontract. Users are responsible for its correct application.
Compliance with a British Standard does not ofitself confer immunity from legal obligations.
This British Standard was published under tbe authorityof the Standards Policy and Strategy Committee on11 July 2003
Summary of pages
This document prises a front cover an inside front cover the EN title page pages 2 to 8 an inside back cover and a back cover.
The BSI copyright date displayed in this document indicates when thedocument was last issued.
Amendments issued since publication
Amd. No. Date Comments
C BSI 11 July 2003
EN50123-7-2
ICS 29.280
Supersedes EN 50123-7-2:1999
English version
Fixed installations-D.C.switchgear Railwayapplications-Part7-2:Measurement controlandprotectiondevicesforspecificuseind.c.tractionsystems-Isolatingcurrenttransducersandothercurrentmeasuringdevices
Applications ferroviaires-Installations fixes - Appareillage a courant continuPartie 7-2: Appareils de mesure de mande et de protection pour usage specifique dans les systemesde traction a courant continu -de mesure de courant Transducteurs et autres appareils
Bahnanwendungen-Ortsfeste Anlagen- Gleichstrom-SchalteinrichtungenTeil 7-2: Mess- Steuer-undSchutzeinrichtungen in Gleichstrom- Bahnanlagen -Messumformer fur Strommessung undandere Strommesseinrichtungen
This European Standard was approved by CENELEC on 2002-09-01. CENELEC members are bound toply with the CEN/CENELEC intermal Regulations which stipulate the conditions for giving this EuropeanStandard 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 otherlanguage made by translation under the responsibity of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the oficial versions.
CENELEC members are the national electrotechnical mittees of Austria Belgium Czech Republic Denmark Finland France Gemany Greece Hungary Iceland Ireland Italy Luxembourg Malta Netherlands Norway Portugal Slovakia Spain Sweden Switzerland and United Kingdom.
European Committee for Electrotechnical StandardizationComite Europeen de Normalisation ElectrotechniqueEuropaisches Komitee fur Elektrotechnische Normung
Central Secretariat: rue de Stassart 35 B - 1050 Brussels
Foreword
This European Standard was prepared by SC 9XC Electric supply and earthing systems forCommitte CENELEC TC 9X Electrical and electronic applications for railways. public transport equipment and ancillary apparatus (fixed installations) of the Technical
The text of the draft was submitted to the Unique Acceptance Procedure and was approvedby CENELEC as EN 50123-7-2 on 2002-09-01.
This European Standard supersedes EN 50123-7-2:1999
The following dates were fixed:
-latest date by which the EN has to be implementedat national level by publication of an identical national standard or by endorsement (dop) 2003-09-01-latest date by which the national standards conflictingwith the EN have to be withdrawn (dow)2005-09-01
This Part 7-2 is to be used in conjunction with EN 50123-1:2003.
Contents
1 Scope..2 Normative references....3Definitions...4 Servicerequirements.......... 45 Characteristics 55.1 Electrical characteristics. 5.2 Mechanical characteristics. 56Information to be exchanged between purchaser and supplier. 67 Tests.. 77.1 Dielectric tests.7.2 Calibration test. 7 77.3 Other tests 87.4 EMC tests....
