ISO INTERNATIONAL STANDARD 2746 Third edition 2015-10-01 Vitreous and porcelain enamels - High voltage test Emaux vitrifiés Essai sous haute tension Reference number ISO 2746:2015(E) ISO International Organization for Standardization Isee-Zhejang Institute of Standardization 5956617 @IS02015 vided by IHS under I No reproduction or networking permitted without license from IHS IS0 2746:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland 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. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internationai ibr DrganizationforStandardization Not for Resale, 2015/11/30 07:18:09 networking permited withoutlicense from IHS IS0 2746:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ...1 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus. ..2 6 Specimens ..2 7 Test voltage 3 7.1 Test A: Detection of defects (3.1) which extend down to the metal basis (e.g. open pores) 3 7.2 Test B: Detection of defects and weak spots (3.2) 4 8 Procedure .4 9 Test report. .4 Bibliography 6 iii licensee=Zhejiang Institute of Standardization 5956617 vithout license from IHS