BS ISO 8856:2014 BSl Standards Publication Road vehicles Electrical performance of starter motors - Test methods and general requirements bsi. ..making excellence a habit: BS ISO 8856:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 8856:2014 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 2014. Published by BSI Standards Limited 2014 ISBN978 0580830815 ICS 43.060.50 Compliance witha British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2014. Amendments issued since publication Date Text affected BS ISO 8856:2014 ISO INTERNATIONAL 8856 STANDARD Third edition 2014-01-15 Road vehicles Electrical performance of starter motors Test methods and general requirements Vehicules routiers-Caracteristiques électriques des démarreurs- Méthodesd'essaietconditionsgenerales Referencenumber IS0 8856:2014(E) TO @ ISO 2014 BS ISO 8856:2014 IS0 8856:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211 Geneva 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 2014-Allrights reserved BS ISO 8856:2014 IS0 8856:2014(E) Contents Page Foreword iv 1 Scope 1 2 Terms and definitions .1 3 Test conditions 2 3.1 Temperature ２２ 3.2 Measurementaccuracy 3.3 Voltage/current characteristic of starter motor power supply 2 3.4 Preparationoftest samples. 3 4 Test benches.. .3 4.1 General. 3 4.2 Type 1 test bench 4 4.3 Type 2 test bench 4 5 Test method. 6 5.1 General. 6 5.2 Test procedure. 6 6 Measurement correction 7 6.1 General 7 6.2 Correction of torque 7 6.3 Correction of rotational frequencywith temperature 9 Presentation of results. .10 7 .10 7.1 Poweroutputandefficiencycalculation 7.2 Graphic presentation of starter motor characteristic curves .10 7.3 Changeofvoltage/currentcharacteristic 10 @ IS0 2014 - All rights reserved iii BSISO8856:2014 IS0 8856:2014(E) Foreword Iso (theInternational Organizationfor Standardization)is a worldwidefederation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations,governmental and non-governmental, in liaison with Iso, also takepart in the work. ISo collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in theISo/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of Iso documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to thepossibilitythat some ofthe elements of this documentmaybethe subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Details of an