1、 TECHNICAL REPORT IEC TR 62039First edition 2007-03Selection guide for polymeric materials for outdoor use under HV stress Reference number IEC/TR 62039:2007(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1
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7、er Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 TECHNICAL REPORT IEC TR 62039First edition 2007-03Selection guide for polymeric materials f
8、or outdoor use under HV stress PRICE CODE 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 El
9、ectrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch N For price, see current catalogue Commission Electrotechnique Internationale International Electrotechnical Commission 2
10、 TR 62039 IEC:2007(E) CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Important material properties7 3.1 General .7 3.2 Resistance to tracking and erosion7 3.3 Resistance to corona and ozone8 3.4 Resistance to chemical and physical degradation by water8 3.5 Tear strength.8 3
11、.6 Volume resistivity 9 3.7 Breakdown field strength.9 3.8 Resistance to chemical attack .9 3.9 Resistance to weathering and UV10 3.10 Resistance to flammability.10 3.11 Arc resistance .10 3.12 Glass transition temperature .10 3.13 Hydrophobicity 10 4 Summary11 Annex A (normative) Important properti
12、es and minimum requirements of polymeric insulation materials for outdoor use under HV stress 12 Bibliography14 Table A.1 Important properties and minimum requirements of polymeric insulation materials for outdoor use under HV stress 12 TR 62039 IEC:2007(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSIO
13、N _ SELECTION GUIDE FOR POLYMERIC MATERIALS FOR OUTDOOR USE UNDER HV STRESS 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 i
14、nternational co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (here
15、after referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also par
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18、l reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to ap
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20、its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including indi
21、vidual 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 publication, use of, or reliance upon,
22、 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 possibility that some of the elements of
23、 this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical repor
24、t when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC 62039, which is a technical report, has been prepared by IEC technical committee 112: Evaluation and qualification of electrical insulating materia
25、ls and systems. The text of this technical report is based on the following documents: Enquiry draft Report on voting 112/34/DTR 112/54/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publication has
26、 been drafted in accordance with the ISO/IEC Directives, Part 2. 4 TR 62039 IEC:2007(E) The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the speci
27、fic publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. TR 62039 IEC:2007(E) 5 INTRODUCTION There is an urgent need within utilities and industry for material stan
28、dards, which define the physical properties of the polymers applied for outdoor insulation. This requirement was identified during discussions in IEC TC 36 and IEC TC 15 which is today part of IEC TC 112. As a consequence, in the year 2001, CIGRE formed the WG D1.14 with the specific task of definin
29、g the physical parameters important for the polymeric materials applied in outdoor insulation and to develop the relevant test methods where necessary. As a first step, a state- of-the-art report was issued by CIGRE in the brochure 255. Twelve properties have been identified; standardised test metho
30、ds and minimum requirements where available for eight of them. For the remaining four properties, test methods and minimum requirements still need to be defined. This will be the future task of WG D1. This IEC Technical Report presents as conclusion of the CIGRE-report the important material propert
31、ies for polymeric materials used in outdoor insulation and where they are applicable, and lists the standardised test methods including the minimum requirements. If no standardised tests are available, then test methods reported in literature are summarised. 6 TR 62039 IEC:2007(E) SELECTION GUIDE FO
32、R POLYMERIC MATERIALS FOR OUTDOOR USE UNDER HV STRESS 1 Scope This IEC Technical Report presents the important material properties for polymeric materials used in outdoor insulation and, where applicable, lists the standardised test methods including the minimum requirements. If no standardised test
33、s are available, then test methods reported in literature are summarised. This report is valid for insulating materials used in outdoor high voltage electrical applications with a system voltage greater than 1000 V a.c. having polymeric insulation including also such applications where the housing i
34、s an integral part of the devices e.g. in surge arrestors and cable terminations. The scope of this report is limited to the materials only. The performance of insulators in service depends on several factors such as the type of material, the design, environmental conditions etc. Consequently, the c
35、hoice of materials that fulfil the require- ments listed below is a necessary condition but does not guarantee satisfactory performance when used in outdoor insulation. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
36、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials IEC 60243-1, Electrical strength of insula
37、ting materials Test methods Part 1: Tests at power frequencies IEC 60250, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60455-2:1998, Resin based
38、 reactive compounds used for electrical insulation Part 2: Methods of test IEC 60587, Test method for evaluating resistance to tracking and erosion of electrical insulating materials used under severe ambient conditions IEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and
39、 vertical flame test methods IEC 61006, Electrical insulating materials Methods of test for the determination of the glass transition temperature IEC 61109, Composite insulators for a.c. overhead lines with a nominal voltage greater than 1000 V Definitions, test methods and acceptance criteria Amend
40、ment 1 (1995) IEC 61621, Dry, solid insulating materials Resistance test to high-voltage, low-current arc discharges TR 62039 IEC:2007(E) 7 IEC 62217, Polymeric insulators for indoor and outdoor use with a nominal voltage greater than 1 000 V General definitions, test methods and acceptance criteria
41、 ISO 62, Plastics Determination of water absorption ISO 4892-2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps ISO 4892-3, Plastics Methods of exposure to laboratory light sources Part 3: Fluorescent UV lamps ISO 4892-4:2004, Plastics Methods of exposure to laborato
42、ry light sources Part 4: Open- flame carbon-arc lamps ISO 11357-2, Plastics Differential scanning calorimetry (DSC) Part 2: Determination of glass transition temperature ISO 11359-2:1999, Plastics Thermomechanical analysis (TMA) Part 2: Determination of coefficient of linear thermal expansion and gl
43、ass transition temperature 3 Important material properties 3.1 General This report defines the important properties that need to be tested on the material itself in order to ensure the functioning of the material under normal operating service conditions. Physical, mechanical and chemical properties
44、 of the materials have been considered. According to their function in the insulation, three categories of insulating materials are considered: housing materials (in general a silicone rubber, EPDM, EVA, etc.); core materials (FRP etc.); structural materials (epoxy, etc.). The minimum requirements a
45、re, as far as possible, based on the experience of performance of non-ceramic insulators in service. 3.2 Resistance to tracking and erosion The inclined-plane-test according to IEC 60587 is easily applicable, shows a good reproducibility and allows a good differentiation between insulating materials
46、 with respect to the resistance of electrical insulating materials against erosion and tracking. It is recommended to test according to method 1 (constant tracking voltage) and to classify according to criterion A (current criterion 60 mA). Based on service experience with high voltage insulators th
47、e minimum requirement according to classification 1A3,5 is recommended in general. For some medium voltage applications materials are in use that fulfil classification 1A2,5 with satisfying performance. There is not sufficient evidence to define the general applicability of materials that fulfil the
48、 classification 1A2,5. 8 TR 62039 IEC:2007(E) 3.3 Resistance to corona and ozone The resistance against corona and ozone is an important material property that should be verified for housing and structural polymeric materials. There are a few standard procedures for testing corona (e.g. IEC 60270) a
49、nd ozone resistance of materials. With regard to the ozone test standards, they seem to be using unrealistically high ozone concentrations. Manufacturers also use in-house test procedures. However, neither the test procedures nor the test results can be compared. Evidence for good correlation between in-service performance and results of the corona test procedures for different materials is also missing. Appropria
