IEC_61683-1999.pdf

INTERNATIONALSTANDARDIEC61683First edition1999-11Photovoltaic systems Power conditioners Procedure for measuring efficiencySystmes photovoltaques Conditionneurs de puissance Procdure de mesure du rendementReference numberIEC 61683:1999(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.Consolidated publicationsConsolidated versions of some IEC publications including amendments areavailable.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to thebase publication,the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjects under consideration and work in progress undertaken bythe technical committee which has prepared this publication,as well as the list ofpublications issued,is to be found at the following IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*and as a printed periodicalTerminology,graphical and letter symbolsFor general terminology,readers are referred to IEC 60050:InternationalElectrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signs approved by the IEC forgeneral use,readers are referred to publications IEC 60027:Letter symbols to beused in electrical technology,IEC 60417:Graphical symbols for use on equipment.Index,survey and compilation of the single sheets and IEC 60617:Graphical symbolsfor diagrams.*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC61683First edition1999-11Photovoltaic systems Power conditioners Procedure for measuring efficiencySystmes photovoltaques Conditionneurs de puissance Procdure de mesure du rendement Commission Electrotechnique Internationale International Electrotechnical CommissionPRICE CODE IEC 1999 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chRFor price,see current catalogueLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61683 IEC:1999(E)CONTENTSPageFOREWORD.3INTRODUCTION.4Clause1Scope.52Normative reference.53Definitions.54Efficiency measurement conditions.64.1DC power source for testing.64.2Temperature.64.3Output voltage and frequency.64.4Input voltage.74.5Ripple and distortion.74.6Resistive loads/utility grid.74.7Reactive loads.74.8Resistive plus non-linear loads.84.9Complex loads.85Efficiency calculations.85.1Rated output efficiency.85.2Partial output efficiency.85.3Energy efficiency.95.4Efficiency tolerances.96Efficiency test circuits.96.1Test circuits.96.2Measurement procedure.107Loss measurement.107.1No-load loss.107.2Standby loss.11Annex A(informative)Power conditioner description.12Annex B(informative)Power efficiency and conversion factor.14Annex C(informative)Weighted-average energy efficiency.16Annex D(informative)Derivation of efficiency tolerance in table 2.19Bibliography.20LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61683 IEC:1999(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_PHOTOVOLTAIC SYSTEMS POWER CONDITIONERS PROCEDURE FOR MEASURING EFFICIENCYFOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,the IEC publishes International Standards.Their preparation isentrusted to technical committees;any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work.International,governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation.The IEC collaborates closely with the InternationalOrganization for Standardization(ISO)in accordance with conditions determined by agreement between thetwo organizations.2)The formal decisions or agreements of the IEC on technical matters express,as nearly as possible,aninternational consensus o