1、 IEC 60112Edition 4.1 2009-10INTERNATIONAL STANDARD NORME INTERNATIONALEMethod for the determination of the proof and the comparative tracking indices of solid insulating materials Mthode de dtermination des indices de rsistance et de tenue au cheminement des matriaux isolants solides IEC60112:2003+
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16、cation ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60112Edition 4.1 2009-10INTERNATIONAL STANDARD NORME INTERNATIONALEMethod for the determination of the proof and the comparative tracking indice
17、s of solid insulating materials Mthode de dtermination des indices de rsistance et de tenue au cheminement des matriaux isolants solides INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE CEICS 19.080; 29.035.01 PRICE CODECODE PRIXISBN 2-8318-1063-3BASIC SAFETY PUBL
18、ICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60112 IEC:2003+A1:2009 CONTENTS FOREWORD 3 1 Scope . 5 2 Normative references 5 3 Terms and definitions 6 4 Principle . 7 5
19、 Test specimen 7 6 Test specimen conditioning. 8 6.1 Environmental conditioning. 8 6.2 Test specimen surface state. 8 7 Test apparatus 8 7.1 Electrodes 8 7.2 Test circuit . 9 7.3 Test solutions. 9 7.4 Dropping device . 9 7.5 Test specimen support platform10 7.6 Electrode assembly installation 10 8 B
20、asic test procedure .10 8.1 General 10 8.2 Preparation 10 8.3 Test procedure .11 9 Determination of erosion .11 10 Determination of proof tracking index (PTI) .11 10.1 Procedure 11 10.2 Report 12 11 Determination of comparative tracking index (CTI) 12 11.1 General 12 11.2 Determination of the 100 dr
21、op point12 11.3 Determination of the maximum 50 drop withstand voltage 13 11.4 Report 14 Annex A (informative) List of factors that should be considered by product committees 18 Annex B (informative) Electrode material selection .19 Bibliography.20 Figure 1 Electrode 16 Figure 2 Electrode / specimen
22、 arrangement 16 Figure 3 Example of typical electrode mounting and specimen support .17 Figure 4 Example of test circuit.17 60112 IEC:2003+A1:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ METHOD FOR THE DETERMINATION OF THE PROOF AND THE COMPARATIVE TRACKING INDICES OF SOLID INSULATING MATERIAL
23、S FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in t
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31、 servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publ
32、ication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possib
33、ility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60112 has been prepared by subcommittee 15E: Methods of test, of IEC technical committee 15: Insula
34、ting materials. This consolidated version of IEC 60112 consists of the fourth edition (2003) documents 15E/209/FDIS and 15E/213/RVD, its amendment 1 (2009) documents 112/116/CDV and 112/130/RVC and its corrigenda of June 2003 and October 2003. The technical content is therefore identical to the base
35、 edition and its amendment and has been prepared for user convenience. It bears the edition number 4.1. A vertical line in the margin shows where the base publication has been modified by amendment 1. 4 60112 IEC:2003+A1:2009 Major changes since the previous edition are the following: The selection
36、of a material for a specific application frequently involves compromises in the levels of the individual properties and test criteria. In the previous edition of IEC 60112 the test criteria required “no burning of the specimen“, but this gave rise to two issues: difficulties in the identification of
37、 burning which includes all types of combustion, e.g. flaming, and smouldering in the situation where scintillations had occurred giving rise in many cases to carbon on the surface of the specimen, and a situation in which some product committees had found it necessary to dispense with the “no burni
38、ng“ criterion in the tracking tests which they replaced by flame tests on the final product, thereby giving rise to two types of CTI/PTI with different criteria. This standard attempts to regularize this situation. It has the status of a basic safety publication in accordance with IEC Guide 104. Thi
39、s publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of the base publication and its amendments will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data rel
40、ated to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60112 IEC:2003+A1:2009 5 METHOD FOR THE DETERMINATION OF THE PROOF AND THE COMPARATIVE TRACKING INDICES OF SOLID INSULATING MATERIALS 1 Scope This International
41、standard specifies the method of test for the determination of the proof and comparative tracking indices of solid insulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltages. The standard provides for the determination of erosion when required.
42、 NOTE 1 The proof tracking index is used as an acceptance criterion as well as a means for the quality control of materials and fabricated parts. The comparative tracking index is mainly used for the basic characterization and comparison of the properties of materials. Test results cannot be used di
43、rectly for the evaluation of safe creepage distances when designing electrical apparatus. NOTE 2 This test discriminates between materials with relatively poor resistance to tracking, and those with moderate or good resistance, for use in equipment which can be used under moist conditions. More seve
44、re tests, of longer duration are required for the assessment of performance of materials for outdoor use, utilizing higher voltages and larger test specimens (see the inclined plane test of IEC 60587). Other test methods such as the inclined method may rank materials in a different order from the dr
45、op test given in this standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) app
46、lies. IEC Guide 104:1997, The preparation of safety publications and the use of basic safety publications and group safety publications ISO 293:1986, Plastics Compression moulding test specimens of thermoplastic materials ISO 294-1:1996, Plastics Injection moulding of test specimens of thermoplastic
47、 materials Part 1: General principles, and moulding of multi-purpose and bar test specimens ISO 294-3:2002, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates ISO 295:1991, Plastics Compression moulding of test specimens of thermosetting materials 6 60112 I
48、EC:2003+A1:2009 3 Terms and definitions For the purposes of this International Standard, the following definitions apply: 3.1 tracking progressive formation of conducting paths, which are produced on the surface and/or within a solid insulating material, due to the combined effects of electric stres
49、s and electrolytic contamination 3.2 tracking failure failure of insulation due to tracking between conducting parts NOTE In the present test, tracking is indicated by operation of an over-current device due to the passage of a current of at least 0,5 A for at least 2 s across the test surface and/or within the specimen. 3.3 electrical erosion wearing away of insulating material by the action of electrical dis
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