1、 INTERNATIONAL STANDARD IEC60426 Second edition2007-01 Electrical insulating materials Determination of electrolytic corrosion caused by insulating materials Test methods Reference number IEC 60426:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY B
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8、11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC60426 Second edition2007-01 Electrical insulating materials Determination of electrolytic corrosion caused by insulating materials Test m
9、ethods IEC 2007 Copyright-all rights reserved 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 the publisher.International Electrotechnical Commission,3,rue de Varemb
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11、OR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60426 IEC:2007(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 General description of the test method.8 5 Test specimens.8 5.1 General.8 5.2 Cut surfaces of rigid materials(bloc
12、ks,plates,sheets or semi-finished materials).9 5.3 Cast,moulding,injection and pressed materials.9 5.4 Cut surfaces of flexible films,foils and thin sheets.9 5.5 Adhesive tapes.10 5.6 Flexible sleeving and tubing.10 5.7 Lacquers and insulating varnishes.10 5.8 Cleanliness of contact surfaces.10 5.9
13、Number of test specimens.11 6 Test strips.11 6.1 General.11 6.2 Preparation of the test strips.11 6.3 Cleanliness of test strips.12 7 Test device.12 8 Test conditions.14 9 Test procedure.14 10 Evaluation.14 10.1 General evaluation.14 10.2 Visual inspection of the test strips.15 10.3 Tensile strength
14、 of test strips.15 11 Evaluation of corrosion on copper strips.16 12 Test report.17 Annex A(normative)Tables for the evaluation of corrosion on brass and aluminium strips.18 Annex B(informative)Notes on visual evaluation.20 Annex C(informative)Copper wire tensile strength method.21 Figure 1 Test spe
15、cimen of rigid material,for example textile laminate.8 Figure 2 Test specimen of flexible material,for example flexible films,foils etc.10 Figure 3 Test strip.12 Figure 4 Test device for determining electrolytic corrosion.13 Figure C.1 Apparatus for determining electrolytic corrosion of rigid insula
16、ting material.23 Figure C.2 Apparatus for determining electrolytic corrosion of flexible insulating material.23 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60426 IEC:2007(E)3 Table 1 Degrees of corrosion of copper strips.16 Table A.1 Degrees of corrosion of brass strips.18 Table A.2 Degrees of corrosion of aluminium strips.19 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPP