1、 IEC 61112Edition 2.0 2009-04INTERNATIONAL STANDARD NORME INTERNATIONALELive working Electrical insulating blankets Travaux sous tension Nappes isolantes lectriques IEC61112:2009 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise spe
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16、ONAL STANDARD NORME INTERNATIONALELive working Electrical insulating blankets Travaux sous tension Nappes isolantes lectriques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XICS 13.260; 29.240.20; 29.260.99 PRICE CODECODE PRIXISBN 2-8318-1036-5 Registered trade
17、mark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61112 IEC:2009 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 Terms and definitions .8 4 Requirements .9 4.1 General .9 4.2 Classification.9 4.3 Physical re
18、quirements .9 4.3.1 Composition 9 4.3.2 Shape and design9 4.3.3 Dimensions and tolerances11 4.3.4 Workmanship and finish 11 4.4 Mechanical, climatic and environmental requirements .12 4.5 Dielectric requirements12 4.6 Marking .12 4.7 Packaging .13 4.8 Instructions for use13 5 Tests 13 5.1 General .1
19、3 5.2 Visual inspection and measurements.14 5.2.1 General .14 5.2.2 Classification.14 5.2.3 Composition 14 5.2.4 Dimensions, workmanship and finish .14 5.2.5 Thickness 14 5.3 Marking .15 5.3.1 Visual inspection and measurement 15 5.3.2 Durability of marking15 5.4 Packaging and instructions for use 1
20、5 5.5 Mechanical tests .15 5.5.1 General .15 5.5.2 Tensile strength and elongation at break .15 5.5.3 Mechanical puncture resistance.16 5.5.4 Tension set for elastomer material.18 5.5.5 Tear resistance test for plastic material .18 5.6 Dielectric tests 19 5.6.1 General .19 5.6.2 Electrodes .20 5.6.3
21、 Test equipment22 5.6.4 Electrical test procedure 23 5.7 Ageing tests 24 5.8 Thermal tests 25 5.8.1 Flame retardance test25 5.8.2 Low temperature folding test (except for category C blankets) .26 6 Tests on electrical insulating blankets with special properties.27 61112 IEC:2009 3 6.1 General .27 6.
22、2 Category A: Acid resistance 27 6.3 Category H: Oil resistance.27 6.4 Category Z: Ozone resistance .27 6.4.1 General .27 6.4.2 Test methods.28 6.5 Category M: Mechanical puncture resistance.29 6.6 Category C: Extremely low temperature folding test 29 7 Conformity assessment of electrical insulating
23、 blankets having completed the production phase29 8 Modifications 30 Annex A (informative) Guidelines for the selection of the class of electrical insulating blankets in relation to nominal voltage of a system .31 Annex B (informative) In-service care and testing 32 Annex C (normative) Suitable for
24、live working ; double triangle (IEC 60417-5216 (2002-10).34 Annex D (normative) General type test procedure35 Annex E (normative) Liquid for tests on electrical insulating blankets of category H Oil resistance38 Annex F (normative) Classification of defects and tests to be allocated .39 Bibliography
25、40 Figure 1 Example of plain design .10 Figure 2 Example of slotted design 10 Figure 3 Plan view of the dumb-bell test piece .16 Figure 4 Test plates and needle for resistance to mechanical puncture17 Figure 5 Tear resistance test .19 Figure 6 Test set-up for voltage proof test of electrical insulat
26、ing blankets with standard type of electrodes.20 Figure 7 Test set-up for voltage proof test of electrical insulating blankets with alternative type of electrodes 22 Figure 8 Test set-up for voltage withstand test.23 Figure 9 Test set-up for low and extremely low temperature folding tests.26 Figure
27、10 Ozone resistance Method B test set-up .28 Table 1 Special properties .9 Table 2 Common lengths and widths for electrical insulating blankets11 Table 3 Maximum thickness for electrical insulating blankets .11 Table 4 Maximum electrode clearance for proof tests 21 Table 5 Test voltages.24 Table A.1
28、 Designation maximum use voltage .31 Table D.1 List and chronological order of type tests.35 Table E.1 Characteristics of oil no. 138 Table F.1 Classification of defects and associated requirements and tests 39 4 61112 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIVE WORKING ELECTRICAL INSU
29、LATING BLANKETS 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 questions concerning standa
30、rdization 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)”). Their preparatio
31、n 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 collaborates closely with t
32、he 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 the relevant subject
33、s 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 that the technical co
34、ntent 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 maximum extent poss
35、ible 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 responsible for any equip
36、ment 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 technical committees and IE
37、C 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 Publications. 8) Atten
38、tion 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 of patent rights. IE
39、C shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61112 has been prepared by IEC technical committee 78: Live working. This second edition cancels and replaces the first edition, published in 1992, and its Amendment 1 (2002). This edition const
40、itutes a technical revision. It includes the following significant technical changes from the previous edition: general review of the requirements and test provisions; limitation of the scope in terms of the minimum width of electrical insulating blankets in rolls; introduction of a definition of el
41、ectrical insulating blankets including sheeting in various shapes and in rolls; introduction of Class 00; withdrawal of category S and introduction of category R; clarification of the way electrical insulating blankets in rolls are covered by the test procedures; 61112 IEC:2009 5 specification of st
42、andard and alternative types of electrodes for the proof test; modification of the test procedures for low and extremely low temperature by replacing the dielectric proof test by a withstand test in the sanction; modification of the test procedures for acid and oil resistance by specifying the use o
43、f test pieces and by replacing the dielectric proof test by a withstand test in the sanction; specification of liquid 102 for the oil resistance test and harmonisation of the mechanical test sanction with the acid resistance test; preparation of the elements of evaluation of defects, and general app
44、lication of IEC 61318 Ed.3; revision of existing annexes; deletion of Annexes D and F, not applicable according to IEC 61318 Ed.3; introduction of a new normative Annex F on classification of defects. The text of this standard is based on the following documents: FDIS Report on voting 78/785/FDIS 78
45、/799/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/IEC Directives, Part 2. The committee has decided that the contents of this publication will remai
46、n 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 reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 61112 IEC:2009 INTRODUCTION This Inter
47、national Standard has been prepared according to the requirements of IEC 61477 where applicable. The product covered by this standard may have an impact on the environment during some or all stages of its life cycle. These impacts can range from slight to significant, be of short-term or long-term,
48、and occur at the global, regional or local level. Except for a disposal statement in the instructions for use, this standard does not include requirements and test provisions for the manufacturers of the product, or recommendations to the users of the product for environmental improvement. However,
49、all parties intervening in its design, manufacture, packaging, distribution, use, maintenance, repair, reuse, recovery and disposal are invited to take account of environmental considerations. 61112 IEC:2009 7 LIVE WORKING ELECTRICAL INSULATING BLANKETS 1 Scope This International Standard is applicable to electrical insulating blankets for the protection of wo
