IEC_62475_Ed_1.0.pdf

FORM FDIS(IEC)/FORMULAIRE FDIS(CEI)2009-01-09 Registered trademark of the International Electrotechnical Commission42/278/FDISFINAL DRAFT INTERNATIONAL STANDARDPROJET FINAL DE NORME INTERNATIONALEProject number Numro de projet IEC 62475 Ed 1.0 IEC/TC or SC CEI/CE ou SC TC 42 Secretariat/Secrtariat Canada Submitted for parallel voting in CENELEC Soumis au vote parallle au CENELEC Distributed on/Diffus le 2010-07-09 Voting terminates on/Vote clos le 2010-09-10 Also of interest to the following committees Intresse galement les comits suivants TC 14,17,18A,23,32,36,37,38,73,77,90,96 Supersedes document Remplace le document 42/250/CDV and 42/265/RVC Horizontal standard Norme horizontale Other TC/SCs are requested to indicate their interest,if any,in this FDIS to the TC/SC secretary Les autres CE/SC sont requis dindiquer leur intrt,si ncessaire,dans ce FDIS lintention du secrtaire du CE/SC Functions concerned Fonctions concernes Safety Scurit EMC CEM Environment Environnement Quality assurance Assurance de la qualit CE DOCUMENT EST UN PROJET DIFFUS POUR APPROBATION.IL NE PEUT TRE CIT COMME NORME INTERNATIONALE AVANT SA PUBLICATION EN TANT QUE TELLE.OUTRE LE FAIT DTRE EXAMINS POUR TABLIR SILS SONT ACCEPTABLES DES FINS INDUSTRIELLES,TECHNOLOGIQUES ET COMMERCIALES,AINSI QUE DU POINT DE VUE DES UTILISATEURS,LES PROJETS FINAUX DE NORMES INTERNATIONALES DOIVENT PARFOIS TRE EXAMINS EN VUE DE LEUR POSSIBILIT DE DEVENIR DES NORMES POUVANT SERVIR DE RFRENCE DANS LES RGLEMENTATIONS NATIONALES.LES RCIPIENDAIRES DU PRSENT DOCUMENT SONT INVITS PRSENTER,AVEC LEURS OBSERVATIONS,LA NOTIFICATION DES DROITS DE PROPRIT DONT ILS AURAIENT VENTUELLEMENT CONNAISSANCE ET FOURNIR UNE DOCUMENTATION EXPLICATIVE.THIS DOCUMENT IS A DRAFT DISTRIBUTED FOR APPROVAL.IT MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL,TECHNOLOGICAL,COMMERCIAL AND USER PURPOSES,FINAL DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT,WITH THEIR COMMENTS,NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.Titre CEI 62475 Ed 1.0:Techniques des essais haute intensit -Dfinitions et exigences relatives aux courants dessai et systmes de mesure Title IEC 62475 Ed 1.0:High-current test techniques-Definitions and requirements for test currents and measuring systems ATTENTION VOTE PARALLLE CEI CENELEC Lattention des Comits nationaux de la CEI,membres du CENELEC,est attire sur le fait que ce projet finale de Norme internationale est soumis au vote parallle.Les membres du CENELEC sont invits voter via le systme de vote en ligne du CENELEC.ATTENTION IEC CENELEC PARALLEL VOTING The attention of IEC National Committees,members of CENELEC,is drawn to the fact that this final draft International Standard(DIS)is submitted for parallel voting.The CENELEC members are invited to vote through the CENELEC online voting system.Copyright 2010 International Electrotechnical Commission,IEC.All rights reserved.It is permitted to download this electronic file,to make a copy and to print out the content for the sole purpose of preparing National Committee positions.You may not copy or mirror the file or printed version of the document,or any part of it,for any other purpose without permission in writing from IEC.2 62475/FDIS IEC CONTENTS FOREWORD.8 1 Scope.10 2 Normative references.10 3 Terms and definitions.10 3.1 Measuring systems.11 3.2 Components of a measuring system.11 3.3 Scale factors.12 3.4 Rated values.13 3.5 Definitions related to the dynamic behaviour.13 3.6 Definitions related to uncertainty.14 3.7 Definitions related to tests on measuring systems.16 4 Procedures for qualification and use of a measuring system.17 4.1 General principles.17 4.2 Schedule of performance tests.17 4.3 Schedule of performance checks.17 4.4 Requirements for the record of performance.18 4.4.1 Contents of the record of performance.18 4.4.2 Exceptions.18 4.5 Operating conditions.18 4.6 Uncertainty.19 5 Tests and test requirements for an approved measuring system.20 5.1 General requirements.20 5.2 Calibration Determination of the scale factor.20 5.2.1 Calibration of a measuring system by comparison with a reference measuring system(preferred method).20 5.2.2 Determination of the scale factor of a measuring system from those of its components.24 5.3 Linearity test.25 5.3.1 Application.25 5.3.2 Alternative methods in order of suitability.26 5.4 Dynamic behaviour.26 5.5 Short-term stability.27 5.5.1 Method.27 5.5.2 Steady-state current.27 5.5.3 Impulse current and short-time current.28 5.5.4 Periodic impulse current and periodic short-time current.28 5.6 Long-term stability.29 5.7 Ambient temperature effect.29 5.8 Effect of nearby current paths.30 5.9 Software effect.32 5.10 Uncertainty calculati