SANS 61442-2006 Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7 2 kV) up to 30 kV (Um = 36 kV)《额定电压为6 kV(Um = 7 2 kV)到30 kV (Um = 36 kV) 的电源电缆附件.pdf

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 0-626-17958-0 SANS 61442:2006Edition 2IEC 61442:2005Edition 2SOUTH AFRICAN NATIONAL STANDARD Test methods for accessories for power cables with rate

4、d voltages from 6 kV (Um= 7,2 kV) up to 30 kV (Um= 36 kV) This national standard is the identical implementation of IEC 61442:2005 and is adopted with the permission of the International Electrotechnical Commission. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pr

5、etoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 61442:2006 Edition 2 IEC 61442:2005 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 66,

6、Electric cables, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS edition cancels and replaces the first SABS edition (SABS IEC 61442:1997). NORME INTERNATIONALECEIIECINTERNATIONAL STANDARD 61442Deuxime ditionSecond edition2005-0

7、3Mthodes dessais des accessoires de cbles dnergie de tensions assignes de 6 kV (Um = 7,2 kV) 30 kV (Um = 36 kV) Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV) Pour prix, voir catalogue en vigueur For price, see current catalogue IEC

8、 2005 Droits de reproduction rservs Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. No part of thi

9、s 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, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone:

10、 +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch CODE PRIX PRICE CODE V Commission Electrotechnique InternationaleInternational Electrotechnical Commission 61442 IEC:2005 3 CONTENTS FOREWORD 7 1 Scope 11 2 Normative references .11 3 Test installations and conditions.1

11、3 4 AC voltage tests.13 4.1 Dry test for all accessories 13 4.2 Wet test for outdoor terminations .13 4.3 Test in water for stop ends 15 5 DC voltage tests.15 5.1 Installation 15 5.2 Method15 6 Impulse voltage tests15 6.1 Installation 15 6.2 Method15 6.3 Test at elevated temperature .15 7 Partial di

12、scharge test17 7.1 Method17 7.2 Test at elevated temperature .17 8 Tests at elevated temperature 17 8.1 Installation and connection 17 8.2 Measurement of temperature .17 9 Heating cycles voltage test.25 9.1 Installation 25 9.2 Test in air25 9.3 Test in water .25 9.4 Immersion test for outdoor termin

13、ations .27 10 Thermal short-circuit test (screen) 27 10.1 Installation 27 10.2 Method27 11 Thermal short-circuit test (conductor) .29 11.1 Installation 29 11.2 Method29 12 Dynamic short-circuit test .31 12.1 Installation 31 12.2 Method31 13 Humidity and salt fog tests31 13.1 Apparatus .31 13.2 Insta

14、llation 33 13.3 Method33 14 Impact test at ambient temperature.33 15 Screen resistance measurement.37 15.1 Installation 37 15.2 Method37 61442 IEC:2005 5 16 Screen leakage current measurement.37 16.1 Installation 37 16.2 Method37 17 Screen fault current initiation test .39 17.1 Installation 39 17.2

15、Method41 18 Operating force test43 18.1 Installation 43 18.2 Method43 19 Operating eye test43 19.1 Installation 43 19.2 Method43 20 Capacitive test point performance.45 20.1 Installation 45 20.2 Test method 45 Annex A (informative) Determination of the cable conductor temperature47 Annex B (informat

16、ive) Details of the test chamber and spray . equipment for humidity and salt fog tests .57 Bibliography .61 Figure 1 Terminations tested in air.19 Figure 2 Joints tested in air19 Figure 3 Separable connectors tested in air .21 Figure 4 Joints tested under water .21 Figure 5 Separable connectors test

17、ed under water.23 Figure 6 Outdoor terminations tested under water 23 Figure 7 Heating cycle .25 Figure 8 Typical impact test apparatus for joints.35 Figure 9 Test arrangement for the screen leakage current measurement 39 Figure 10 Test arrangement for screen fault current initiation test.41 Figure

18、A.1 Reference cable49 Figure A.2 Arrangement of the thermocouples49 Figure A.3 Current/temperatures curves.53 61442 IEC:2005 7 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TEST METHODS FOR ACCESSORIES FOR POWER CABLES WITH RATED VOLTAGES FROM 6 kV (Um = 7,2 kV) UP TO 30 kV (Um = 36 kV) FOREWORD 1) Th

19、e 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 the electrical an

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21、mmittees; 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 participate in this preparation. IEC collaborates closely with the International Organization

22、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 possible, an international consensus of opinion on the relevant subjects since each technical committ

23、ee 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. While all reasonable efforts are made to ensure that the technical content of IEC Publications is a

24、ccurate, 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 apply IEC Publications transparently to the maximum extent possible in their national and reg

25、ional 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 indicate its approval and cannot be rendered responsible for any equipment declared to be in conform

26、ity 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 individual experts and members of its technical committees and IEC National Committees for any

27、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, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative

28、 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 this IEC Publication may be the subject of patent rights. IEC shall not be held responsibl

29、e for identifying any or all such patent rights. International Standard IEC 61442 has been prepared by IEC technical committee 20: Electric cables. This second edition of IEC 61442 cancels and replaces the first edition of IEC 61442, published in 1997, and constitutes a technical revision. Significa

30、nt technical changes with respect to the previous edition are as follows: a) a test in water has been added for stop ends; b) the heating cycles voltage test has been revised to clarify testing in air and water; c) the testing conditions for the short-circuit tests have been redefined; d) additional

31、 information has been provided for testing separable connectors with a metallic housing; 61442 IEC:2005 9 e) tests not required by IEC, i.e. an immersion test for outdoor terminations and an impact test, have been included in order to have a common test method document with CENELEC under the IEC/CLC

32、 Dresden agreement. The text of this standard is based on the following documents: FDIS Report on voting 20/748/FDIS 20/762/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in acc

33、ordance with the ISO/IEC Directives, Part 2. 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 specific publication. At this date, the publicat

34、ion will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 61442 IEC:2005 11 TEST METHODS FOR ACCESSORIES FOR POWER CABLES WITH RATED VOLTAGES FROM 6 kV (Um = 7,2 kV) UP TO 30 kV (Um = 36 kV) 1 Scope This International Standard specifies the test methods to be used for type testi

35、ng accessories for power cables with rated voltage from 3,6/6 (7,2) kV up to 18/30 (36) kV. Test methods are specified for accessories for extruded and paper insulated cables according to IEC 60502-2 and IEC 60055-1 respectively. 2 Normative references The following referenced documents are indispen

36、sable 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 amendments) applies. IEC 60055-1: Paper-insulated metal-sheathed cables for rated voltages up to 18/30 kV (with copper or

37、 aluminium conductors and excluding gas-pressure and oil-filled cables) Part 1: Tests on cables and their accessories IEC 60060-1:1989, High-voltage test techniques Part 1: General definitions and test requirements IEC 60230:1966, Impulse tests on cables and their accessories IEC 60270:2000, High-vo

38、ltage test techniques Partial discharge measurements IEC 60502-2:2005, Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) Part 2: Cables for rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV) IEC 60811-1-2:1985

39、, Common test methods for insulating and sheathing materials of electric and optical cables Part 1: Methods for general application Section Two: Thermal ageing methods IEC 60885-3:1988, Electrical test methods for electric cables Part 3: Test methods for partial discharge measurements on lengths of

40、extruded power cables IEC 60986:2000, Short-circuit temperature limits of electric cables with rated voltages from 6 kV (Um= 7,2 kV) up to 30 kV (Um= 36 kV) IEC 61238-1:2003, Compression and mechanical connectors for power cables for rated voltages up to 30 kV (Um= 36 kV) Part 1: Test methods and re

41、quirements 61442 IEC:2005 13 3 Test installations and conditions 3.1 The test methods described in this standard are intended to be used for type tests. 3.2 Test arrangements and the number of test samples are given in the relevant standard. 3.3 The test conditions are specified in Clauses 4 to 20 o

42、f this standard. When they are not, they shall be as specified in the relevant standards. 3.4 Unless otherwise stated, the testing parameters and the requirements are given in the relevant standard. 3.5 For transition joints (either extruded insulation to extruded insulation or extruded insulation t

43、o paper insulation), the testing parameters (voltage and conductor temperature) are those for the lower rated cable. 3.6 The tests shall be started not less than 24 h after the installation of the accessories on the cable test loops, unless otherwise specified by the manufacturer. The time interval

44、shall be recorded in the test report. 3.7 Cable screens, and armour if any, shall be bonded and earthed at one end only to prevent circulating currents. 3.8 All parts of an accessory which are normally earthed shall be connected to the cable screen. Any supporting metalwork shall also be earthed. 3.

45、9 Ambient temperature shall be (20 15) C. 3.10 Tap water shall be used for all tests in water. 4 AC voltage tests 4.1 Dry test for all accessories 4.1.1 Installation The set(s) of accessories shall be erected with all associated metalwork and fittings. The accessories shall be clean and dry before a

46、pplying the test voltage. 4.1.2 Method Unless otherwise specified, the test shall be made at ambient temperature, and the procedure for voltage application shall be as specified in Section 5 of IEC 60060-1. 4.2 Wet test for outdoor terminations 4.2.1 Installation The terminations shall be erected in

47、 a vertical position, unless they are to be specifically installed in another orientation, with the relative spacing as under service conditions and according to manufacturers instructions. 61442 IEC:2005 15 4.2.2 Method Unless otherwise specified, the wet test method is as described in 9.1 of IEC 6

48、0060-1, and shall be carried out at ambient temperature. 4.3 Test in water for stop ends 4.3.1 Installation The stop ends shall be installed in a water tank of such dimensions as to have a height of water of 1,0002,00 +m over their top surface, unless otherwise specified. The water shall be at ambie

49、nt temperature. 4.3.2 Method Unless otherwise specified, the procedure for voltage application shall be as specified in IEC 60060-1. 5 DC voltage tests 5.1 Installation The set(s) of accessories shall be erected with all associated metalwork and fittings. The accessories shall be clean and dry before applying the test voltage. 5.2 Method A voltage of negative polarity shall be applied to the cable conductor. The tes