BS ISO BRITISH STANDARD 10770-1:2009 Hydraulic fluid power Electrically modulated hydraulic control valves Part l: Test methods for four-port directional flow-control valves ICS 23.100.50 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BS ISO 10770-1:2009 National foreword This British Standard is the UK implementation of ISO 10770-1:2009.It supersedes BS IS0 10770-1:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MCE/18/-/8, Product testing. 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. Compliance with a British Standard cannot confer immunity fromlegalobligations. This British Standard was Amendments/corrigendaissuedsincepublication published under the authority of the Standards Policy and Strategy Date Comments Committee on 30 November 2009 BSI 2009 ISBN978 0 580 602771 BS IS0 10770-1:2009 ISO INTERNATIONAL STANDARD 10770-1 Second edition 2009-10-01 Hydraulic fluid power Electrically modulated hydraulic control valves Part 1: Test methods for four-port directional flow-control valves Transmissionshydrauliques-Distributeurshydrauliquesamodulation électrique- Partie 1:Methodes d'essai pour distributeurs de commande dedebit a quatre voies Reference number ISO 10770-1:2009(E) @ISO 2009 BS ISO 10770-1:2009 ISO 10770-1:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ISO 2009 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 Casepostale56.CH-1211Geneva20 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 2009All rights reserved BS ISO 10770-1:2009 ISO 10770-1:2009(E) Contents Page Foreword iv Introduction 1 Scope. 2 Normative references.. 3 Terms,definitions, symbols and units 3.1 Terms and definitions.. 3.2 Symbols and units.. 4 Standardtestconditions 5 Test installation. 6 6.1 Instrumentaccuracy 6.2 Dynamic range... 7 Electricaltests forvalveswithout integrated electronics 7.1 General 7.2 Coil resistance.... 7.3 Coil inductance -Optionaltest 7.4 Insulation resistance 8 Performancetests. 8.1 Steady state tests. 8.2 Dynamictests 24 9 Pressure impulsetest. 29 10 Presentationofresults. ..30 10.1 10.2 Test reports .30 11 Identification statement (Reference to this part of ISO 10770).. 31 Annex A(informative)Testing guidance... .32 @ IS0 2009 -All rights reserved ili BS ISO 10770-1:2009 ISO 10770-1:2009(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 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. Attention i