BS ISO 8854:2012 BSl Standards Publication Road vehicles Alternators with regulators Test methods and general requirements bsi. ..making excellence a habit. BS ISO 8854:2012 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 8854:2012. It supersedes BS AU 232:1989 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AUE/16, Electrical and electronic equipment. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @The British Standards Institution 2012.Published by BSI Standards Limited2012 ISBN9780580689048 ICS 43.060.50 Compliance with a British Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon30 June2012. Amendments issued since publication Date Textaffected BS ISO 8854:2012 INTERNATIONAL ISO STANDARD 8854 Second edition 2012-06-01 RoadvehiclesAlternatorswith regulators Test methods and general requirements Vehicules routiers-Alternateurs avec regulateurs-Methodes d'essai etconditionsgenerales Reference number ISO 8854:2012(E) ISO @ISO 2012 BSISO8854:2012 ISO 8854:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Casepostale 56 : CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2012 -All rights reserved BSISO8854:2012 ISO8854:2012(E) Contents Page Foreword .iv 1 Scope 2 Terms and definitions 3 Test conditions.. 3.1 Ambienttemperature. 3.2 Airpressure Senseofrotation 3.4 Drive control 3.5 Load current control 3.6 Measuringaccuracy 3.7 Measured values. 4 Test equipment.. 4.1 Ambient air. 4.2 Terminal connecting plan 4.3 Measuring system 5 Measurement procedure 5.1 Current/rotationalfrequency characteristic 5.2 Partialloadmeasurement 5.3 Testing functional ability of regulator. 5.4 Loaddump 6 5.5 Voltage ripple... 9 5.6 Efficiencydetermination 12 6 Method of calculation of efficiency 6.1 Determination of efficiency.. 13 6.2 Determination ofweighted efficiency.. .13 7 Presentationof results 13 Bibliography 15 @ ISO 2012 -All rights reserved ili BSISO8854:2012 ISO8854:2012(E) Foreword Iso (the International Organization for Standardization)is a worldwide federation of national standards bodies 6 non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 /90 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. se rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO8854waspreparedbyTechnicalCommitteeISO/TC22,Roadvehicles,SubcommitteeSC3,Electrical Version and electronic equipment. Licensed copy: Heriot-Watt, Heriot-Watt University Library, iv @ ISO 2012 -All rights reserved BS ISO 8854:2012 INTERNATIONALSTANDARD ISO8854:2012(E) Road vehiclesAlternators with regulatorsTest methods andgeneralreguirements 1 Scope This International Standard specifies test methods and general requirements for the determination of the elec