IEC 61230-2008 Live working - Portable equipment for earthing or earthing and short-circuiting《带电作业.便携式接地或接地并短路设备》.pdf

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1、 IEC 61230Edition 2.0 2008-07INTERNATIONAL STANDARD NORME INTERNATIONALELive 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 IEC61230:2008THIS PUBLICATION IS COPYRIGHT PROTECT

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16、ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61230Edition 2.0 2008-07INTERNATIONAL STANDARD NORME INTERNATIONALELive 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 INTE

17、RNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XBICS 13.260; 29.240.20; 29.260.99 PRICE CODECODE PRIXISBN 2-8318-9875-7 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61230 IEC:20

18、08 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 Earthing cables used on solidly earthed (neutral) sy

19、stems.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 requirements for the insulating element(s) of the insulating

20、 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 Tests 23 5.1 General .23 5.2 Verification and checking 23 5.3 Tests for the

21、 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 test on cable with end fittings.26 5.6 Test on cl

22、amps, 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 arrangements.33 5.7.4 Test current, Joule-integral and

23、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 61230 IEC:2008 3 5.8 Durability of marking .36 6 Conformity assessment 36 7 Modifications 36 Annex A (informative) Guidelines for

24、portable equipment for earthing to be used on railway systems 37 Annex B (informative) Guidelines for earthing sticks 41 Annex C (informative) Guidelines for selection, use and maintenance of portable earthing or earthing and short-circuiting equipment.45 Annex D (informative) Guideline for determin

25、ation 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 of type tests58 Annex F (normative) Classification of defects 59 Bibliography60 Figure 1 Examples of portable equipment and device for installations, network and railwa

26、y systems application.9 Figure 2 Connection diagrams of single and multi-phase earthing and short-circuiting devices for network application 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 app

27、lication.12 Figure 4 Apparatus for fatigue testing with bending and twisting 25 Figure 5 Examples of multiple combinations of clamps accommodating different shapes and sizes of connection points29 Figure 6 Test set-ups for testing multi-phase devices connected between rigid conductors for substation

28、s 31 Figure 7 Test set-ups for testing multi-phase short-circuiting devices for overhead lines32 Figure 8 Test set-ups for testing 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 singl

29、e phase equipment for railway systems 39 Figure B.1 Arrangement for bending tests on earthing sticks of circular cross-section43 Figure 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 condu

30、ctors related to the value of the Joule-integral J2t49 Figure C.2 Determination of conductor temperature from heating.50 Figure C.3 Determination of J2t51 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 s

31、hort-circuiting cables for different types of installations and different voltage levels11 Table 2 Minimum cross-section of earthing 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 en

32、d fittings 27 Table A.1 Short circuit values for copper cable with a maximum temperature of 450 C 40 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

33、 in kA 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 61230 IEC:2008 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIVE WORKING PORTABLE EQUIPMENT FOR EARTHI

34、NG OR EARTHING AND SHORT-CIRCUITING 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 questio

35、ns 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 (hereafter referred to as “IEC Publication(s)

36、”). 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 participate in this preparation. IEC collabo

37、rates 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 possible, an international consensus of opinion on

38、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. While all reasonable efforts are made to ensure t

39、hat 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 apply IEC Publications transparently to the

40、 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 indicate its approval and cannot be rendered respo

41、nsible 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 individual experts and members of its technic

42、al 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, this IEC Publication or any other IEC Pu

43、blications. 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 this IEC Publication may be the subject

44、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 working. This second edition cancels and replaces the first edition published in 1993. It constitutes a technical

45、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; extension of the application to silicone rubber cables made by the revision of TC 20 document IEC 61138; possibility o

46、f 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 products covered by the standard are not appropriate for performing live working; 6 61230 IEC:2008 clarification

47、and modification to the procedure for short-circuit test: change of the 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 pha

48、se, according to IEC 61318 Ed.3; revision of existing annexes; change 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

49、 of the standard; introduction of a new informative Annex A on railway 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 classificatio