SANS 60815-3-2009 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions Part 3 Polymer insulators for a c systems《在受污染环境中使用的高压绝缘子的选择及尺寸 第3部分.pdf
《SANS 60815-3-2009 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions Part 3 Polymer insulators for a c systems《在受污染环境中使用的高压绝缘子的选择及尺寸 第3部分.pdf》由会员分享,可在线阅读,更多相关《SANS 60815-3-2009 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions Part 3 Polymer insulators for a c systems《在受污染环境中使用的高压绝缘子的选择及尺寸 第3部分.pdf(24页珍藏版)》请在麦多课文档分享上搜索。
1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22432-5 SANS 60815-3:2009 Edition 1 IEC/TS 60815-3:2008 Edition 1SOUTH AFRICAN NATIONAL STANDARD Selection and dimensioning of high-voltag
4、e insulators intended for use in polluted conditions Part 3: Polymer insulators for a.c. systems This national standard is the identical implementation of IEC/TS 60815-3:2008 and is adopted with the permission of the International Electrotechnical Commission. Published by SABS Standards Division 1 D
5、r Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS. SANS 60815-3:2009 Edition 1 IEC/TS 60815-3:2008 Edition 1 Table of changes C
6、hange No. Date Scope National foreword This South African standard was approved by National Committee SABS SC 67D, Electricity distribution systems and components Insulators, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS
7、document was published in March 2009. This standard may only be used and printed by approved subscription and freemailing clients of the SABS. IEC/TS 60815-3 Edition 1.0 2008-10 TECHNICAL SPECIFICATIONSelection and dimensioning of high-voltage insulators intended for use in polluted conditions Part
8、3: Polymer insulators for a.c. systems INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 29.080.10 PRICE CODE ISBN 2-8318-1015-6 Registered trademark of the International Electrotechnical Commission SANS 60815-3:2009This standard may only be used and printed by approved subscription and freemailing cl
9、ients of the SABS. 2 TS 60815-3 IEC:2008(E) CONTENTS FOREWORD.3 1 Scope and object5 2 Normative references .5 3 Terms, definitions and abbreviations 6 3.1 Terms and definitions 6 3.2 Abbreviations 6 4 Principles .6 5 Materials 7 5.1 General information on common polymer housing materials 7 5.2 Issue
10、s specific to polymer housing materials under pollution.7 5.2.1 Reduction of creepage distance.7 5.2.2 Extreme pollution.8 6 Site severity determination .9 7 Determination of the reference USCD.9 8 General recommendations for polymer profiles.10 9 Checking of profile parameters.11 9.1 General remark
11、 .11 9.2 Alternating sheds and shed overhang12 9.3 Spacing versus shed overhang12 9.4 Minimum distance between sheds .13 9.5 Creepage distance versus clearance.13 9.6 Shed angle14 9.7 Creepage factor 14 10 Correction of RUSCD .14 10.1 Correction for altitude K a .14 10.2 Correction for insulator dia
12、meter K ad .15 11 Determination of the final minimum creepage distance .15 12 Confirmation by testing.15 Annex A (informative) Background information on pollution induced degradation of polymers.17 Bibliography20 Figure 1 RUSCD as a function of SPS class 9 Figure 2 Typical “open” profiles10 Figure 3
13、 Typical steep polymeric profile.10 Figure 4 Typical shallow under-ribs on open profile .10 Figure 5 Typical deep under-rib profile.11 Figure 6 Typical “alternating” profiles.11 Figure 7 K adversus average diameter and illustration of parameters.15 Figure A.1 Operating areas as a function of polluti
14、on severity and USCD (for a fixed insulating length) 19 SANS 60815-3:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.TS 60815-3 IEC:2008(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SELECTION AND DIMENSIONING OF HIGH-VOLTAGE INSULATORS
15、INTENDED FOR USE IN POLLUTED CONDITIONS Part 3: Polymer insulators for a.c. systems 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 p
16、romote international 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 Guid
17、es (hereafter 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
18、also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as po
19、ssible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense.
20、While all 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 underta
21、ke to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to i
22、ndicate 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 includ
23、ing 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 publication, use of, or relian
24、ce 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 possibility that some of the ele
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