SANS 61230-2009 Live working - Portable equipment for earthing or earthing and short-circuiting《带电操作 用于接地或接地并短路的便携式设备》.pdf

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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 978-0-626-22422-6 SANS 61230:2009 Edition 2 IEC 61230:2008 Edition 2SOUTH AFRICAN NATIONAL STANDARD Live working Portable equipment for earthing or

4、earthing and short-circuiting This national standard is the identical implementation of IEC 61230:2008 and is adopted with the permission of the International Electrotechnical Commission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428

5、 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 61230:2009 Edition 2 IEC 61230:2008 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved

6、by National Committee SABS SC 67E, Electricity distribution systems and components Electricity distribution, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in February 2009. This SANS document supers

7、edes SANS 61230:1993 (edition 1 as modified by IEC corr.:1997, IEC corr. 1:1999, IEC corr. 2:May 2000, IEC corr. 3:Dec. 2000, nat. amdt 1:2000 and nat. amdt 2:2007). This standard may only be used and printed by approved subscription and freemailing clients of the SABS. IEC 61230 Edition 2.0 2008-07

8、 INTERNATIONAL STANDARD NORME INTERNATIONALE Live working Portable equipment for earthing or earthing and short-circuiting Travaux sous tension Equipements portables de mise la terre ou de mise la terre et en court-circuit INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNA

9、TIONALE XB ICS 13.260; 29.240.20; 29.260.99 PRICE CODE CODE PRIX ISBN 2-8318-9875-7 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 61230:2009This standard may only be used and printed by approved subscription a

10、nd freemailing clients of the SABS. 2 61230 IEC:2008 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references .12 3 Terms and definitions .13 4 Requirements.17 4.1 General .17 4.2 Electrical rating .18 4.3 Cables for earthing and short-circuiting .18 4.3.1 Selection of cables 18 4.3.2 Ear

11、thing cables used on solidly earthed (neutral) systems.19 4.3.3 Earthing cables used on non-solidly earthed (neutral) systems19 4.4 Short-circuiting bars 19 4.5 Connections of cables to rigid parts within devices20 4.6 Clamps20 4.7 Earthing and short-circuiting device.20 4.8 Basic safety requirement

12、s for the insulating element(s) of the insulating component 21 4.9 Marking .21 4.9.1 General .21 4.9.2 Marking on earthing and short-circuiting device .21 4.9.3 Marking on clamp 22 4.9.4 Marking on cable .22 4.9.5 Marking on other components22 4.10 Instructions for use22 5 Tests23 5.1 General .23 5.

13、2 Verification and checking 23 5.3 Tests for the selection of cables 24 5.3.1 Cables complying with IEC 6113824 5.3.2 Cables not complying with IEC 6113824 5.4 Fatigue and humidity penetration tests on cable with end fittings.24 5.4.1 Fatigue test .24 5.4.2 Humidity penetration test.26 5.5 Tension t

14、est on cable with end fittings.26 5.6 Test on clamps, permanent connection points and connections.27 5.6.1 Tests for tightening types 27 5.6.2 Tests for non-tightening types .27 5.7 Short-circuit current test 27 5.7.1 General .27 5.7.2 Preparation of test pieces29 5.7.3 Test set-ups and test arrange

15、ments.33 5.7.4 Test current, Joule-integral and duration .34 5.7.5 Documentation and evaluation of the test 35 5.7.6 Alternative means to short-circuit current test for conformity assessment during production phase.36 SANS 61230:2009This standard may only be used and printed by approved subscription

16、 and freemailing clients of the SABS.61230 IEC:2008 3 5.8 Durability of marking .36 6 Conformity assessment 36 7 Modifications 36 Annex A (informative) Guidelines for portable equipment for earthing to be used on railway systems 37 Annex B (informative) Guidelines for earthing sticks 41 Annex C (inf

17、ormative) Guidelines for selection, use and maintenance of portable earthing or earthing and short-circuiting equipment.45 Annex D (informative) Guideline for determination of the equivalent r.m.s. value of a short-time current during a short-circuit of a given duration.56 Annex E (normative) List o

18、f type tests58 Annex F (normative) Classification of defects 59 Bibliography60 Figure 1 Examples of portable equipment and device for installations, network and railway systems application.9 Figure 2 Connection diagrams of single and multi-phase earthing and short- circuiting devices for network app

19、lication 11 Figure 3 Illustration of a three-phase earthing and short-circuiting device with short- circuiting bar and earthing cable(s) for installation and network application.12 Figure 4 Apparatus for fatigue testing with bending and twisting 25 Figure 5 Examples of multiple combinations of clamp

20、s accommodating different shapes and sizes of connection points29 Figure 6 Test set-ups for testing multi-phase devices connected between rigid conductors for substations 31 Figure 7 Test set-ups for testing multi-phase short-circuiting devices for overhead lines32 Figure 8 Test set-ups for testing

21、single-phase devices for overhead lines and for open air substations33 Figure 9 Shape of the short-circuit current during test35 Figure A.1 Test set-up for testing single phase equipment for railway systems 39 Figure B.1 Arrangement for bending tests on earthing sticks of circular cross-section43 Fi

22、gure B.2 Arrangement for torsion tests on earthing sticks of circular cross-section44 Figure C.1 Curves representing the temperature heating of different nature of conductors related to the value of the Joule-integral J 2 t49 Figure C.2 Determination of conductor temperature from heating.50 Figure C

23、.3 Determination of J 2 t51 Figure C.4 Example of the usable region for a device 53 Figure D.1 Determination of short-time current.57 Table 1 Usual lengths of earthing and short-circuiting cables for different types of installations and different voltage levels11 Table 2 Minimum cross-section of ear

24、thing cables related to the cross-section of the short-circuiting cables and/or bars on non-solidly earthed (neutral) systems .19 Table 3 Tension test force on cable with end fittings 27 Table A.1 Short circuit values for copper cable with a maximum temperature of 450 C 40 SANS 61230:2009This standa

25、rd may only be used and printed by approved subscription and freemailing clients of the SABS. 4 61230 IEC:2008 Table B.1 Maximum deflection .43 Table C.1 Comparison of different standard values of nominal cross-sections47 Table C.2 Short-circuit close to generator Short-circuit current values in kA

26、for copper cables with a maximum temperature of 300C.48 Table E.1 List of type tests referred to subclauses.58 Table F.1 Classification of defects and associated requirements and tests 59 SANS 61230:2009This standard may only be used and printed by approved subscription and freemailing clients of th

27、e SABS.61230 IEC:2008 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIVE WORKING PORTABLE EQUIPMENT FOR EARTHING OR EARTHING AND SHORT-CIRCUITING FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical c

28、ommittees (IEC National Committees). The object of IEC is to promote 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, Techn

29、ical Reports, Publicly Available Specifications (PAS) and Guides (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, governmen

30、tal and non- governmental organizations liaising with the IEC 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 a

31、greements of IEC on technical matters express, as nearly as possible, 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 u

32、se 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 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 pro

33、mote international uniformity, IEC National Committees undertake 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 indi

34、cated 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 conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach

35、 to IEC or its directors, employees, 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)

36、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 references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication.

37、 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 responsible for identifying any or all such patent rights. International Standard IEC 61230 has been prepared by IEC technical committee 78: Live wor

38、king. This second edition cancels and replaces the first edition published in 1993. It constitutes a technical revision. The major changes are: extension of the scope to cover the use of equipment on d.c. installations; extension of the use of aluminium to all conductive parts of the device; extensi

39、on of the application to silicone rubber cables made by the revision of TC 20 document IEC 61138; possibility of using this standard for separate components of the equipment; general revision of requirements and tests; deletion of the marking requirement of the double triangle to clarify that the pr

40、oducts covered by the standard are not appropriate for performing live working; SANS 61230:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 6 61230 IEC:2008 clarification and modification to the procedure for short-circuit test: change of t

41、he number of devices submitted to test, change of the pre-conditioning time to 48 h, clarification of the test procedure for separate components, application of conformity assessment for products having completed the production phase, according to IEC 61318 Ed.3; revision of existing annexes; change

42、 of normative Annexes A and C into informative Annexes C and B with a reviewed wording; deletion of Annex B, not applicable according to IEC 61318 Ed.3; deletion of Annex D, its requirements and tests being now included in the body of the standard; introduction of a new informative Annex A on railwa

43、y application; introduction of a new informative Annex D giving guidelines for determination of the equivalent r.m.s. value of a short-circuit current; revision of the list of type tests, which now appears in normative Annex E; introduction of a new normative Annex F on classification of defects. Th

44、e text of this standard is based on the following documents: FDIS Report on voting 78/741/FDIS 78/748/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 accordance with the ISO/I

45、EC 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 publication will be reconfirme

46、d, withdrawn, replaced by a revised edition, or amended. SANS 61230:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.61230 IEC:2008 7 INTRODUCTION This International Standard has been prepared in accordance with the requirements of IEC 61477

47、. An agreement may be made between manufacturer and customer for additional requirements, and tests. These additional requirements are prescribed in the customers specification on the basis of an acceptance procedure. SANS 61230:2009This standard may only be used and printed by approved subscription

48、 and freemailing clients of the SABS. 8 61230 IEC:2008 LIVE WORKING PORTABLE EQUIPMENT FOR EARTHING OR EARTHING AND SHORT-CIRCUITING 1 Scope This International Standard is applicable to portable equipment, with or without matching connection points, for temporary earthing or earthing and short-circu

49、iting of electrically isolated or de-energized a.c. and d.c. installations, distribution and transmission networks, whether they are overhead or underground or of low or high voltage. NOTE Annex A provides guidance for application to railway systems. This standard covers equipment comprising an earthing or a short-circuiting or an earthing and short-circuiting device and insulating component. An example is given in