1、 IEC TS 61245 Edition 2.0 2015-03 TECHNICAL SPECIFICATION Artificial pollution tests on high-voltage ceramic and glass insulators to be used on d.c.systems IEC TS 61245:2015-03(en)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC,Geneva,Switzerland All rights reserved.Unless otherwise speci
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10、 this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.IEC TS 61245 Edition 2.0 2015-03 TECHNICAL SPECIFICATION Artificial pollution tests on high-voltage ceramic and glass insulators to be used on d.c.systems INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 2
11、9.080.10 ISBN 978-2-8322-2546-2 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 IEC TS 61245:2015 IEC 2015 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.8 2 Normative references.8 3 Terms and def
12、initions.8 4 General test requirements.11 4.1 General.11 4.2 Test methods.12 4.3 Arrangement of insulator for test.12 4.3.1 Test configuration.12 4.3.2 Insulator cleaning.12 4.4 Requirements for the test circuit.13 4.4.1 Test voltage.13 4.4.2 Atmospheric corrections.13 4.4.3 Characteristics of the m
13、easuring systems.13 4.4.4 Identification of flashover.13 5 Salt fog method.14 5.1 General information.14 5.2 Salt solution.14 5.3 Spraying system.16 5.4 Conditions before starting the test.19 5.5 Preconditioning process.19 5.6 Withstand test.20 5.7 Acceptance criteria for the withstand test.20 6 Sol
14、id layer method.20 6.1 General information.20 6.2 Main characteristics of inert materials.21 6.3 Composition of the contaminating suspension.21 6.4 Application of the pollution layer.22 6.5 Determination of the degree of pollution of the test insulator.23 6.6 Test procedure.23 6.7 Withstand test and
15、 acceptance criteria.24 Annex A(informative)Method for checking the uniformity of the layer.25 Annex B(informative)Determination of the withstand characteristics of insulators.27 B.1 General.27 B.2 Determination of the maximum withstand degree of pollution at a given test voltage.27 B.3 Determinatio
16、n of the maximum withstand voltage at a given degree of pollution.27 B.4 Determination of the 50%withstand voltage at a given degree of pollution.28 Annex C(informative)Additional recommendations concerning the solid layer method procedures.29 C.1 General.29 C.2 Contamination practice.29 C.3 Drying of the pollution layer.29 C.4 Checking the wetting action of the fog.29 IEC TS 61245:2015 IEC 2015 3 C.5 Checking fog uniformity for large or complex test objects.30 C.6 Fog input to the test chamber.
