1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationLive working Electrical insulating blanketsBS EN 61112:2009National forewordThis British Standard is the UK implementation of EN 61112:2009. It is identi-cal to IEC 61112:2009. I
2、t supersedes BS IEC 61112:1992 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePEL/78, Tools for live working.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include a
3、ll the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 61556 6ICS 13.260; 29.035.01; 29.240.20; 29.260.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authorit
4、y of the StandardsPolicy and Strategy Committee on 31 May 2010.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61112:2009EUROPEAN STANDARD EN 61112 NORME EUROPENNE EUROPISCHE NORM June 2009 CENELEC European Committee for Electrotechnical Standardization Comit Euro
5、pen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61112:2009 E ICS 13.260; 29.240.2
6、0; 29.260.99 Supersedes CLC/TS 61112:2006English version Live working - Electrical insulating blankets (IEC 61112:2009) Travaux sous tension - Nappes isolantes lectriques (CEI 61112:2009) Arbeiten unter Spannung - Elektrisch isolierende Abdecktcher (IEC 61112:2009) This European Standard was approve
7、d by CENELEC on 2009-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationa
8、l standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language a
9、nd notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, L
10、ithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61112:2009EN 61112:2009 - 2 - Foreword The text of document 78/785/FDIS, future edition 2 of IEC 61112, prepared by IEC TC 78, Live working, w
11、as submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61112 on 2009-06-01. This European Standard supersedes CLC/TS 61112:2006. EN 61112:2009 includes the following significant technical changes with regard to CLC/TS 61112:2006: general review of the requirements and test p
12、rovisions; limitation of the scope in terms of the minimum width of electrical insulating blankets in rolls; introduction of a definition of electrical insulating blankets including sheeting in various shapes and in rolls; introduction of Class 00; withdrawal of category S and introduction of catego
13、ry R; clarification of the way electrical insulating blankets in rolls are covered by the test procedures; specification of standard 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 tes
14、t by a withstand test in the sanction; modification of the test procedures for acid and oil resistance by specifying the use of 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
15、 mechanical test sanction with the acid resistance test; preparation of the elements of evaluation of defects, and general application of EN 61318:2008; revision of existing annexes; deletion of Annexes D and F, not applicable according to EN 61318:2008; introduction of a new normative Annex F on cl
16、assification of defects. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (d
17、ow) 2012-06-01 Annex ZA has been added by CENELEC. _ BS EN 61112:2009- 3 - EN 61112:2009 Endorsement notice The text of the International Standard IEC 61112:2009 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has
18、 to be added for the standard indicated: IEC 60743 + A1 NOTE Harmonized as EN 60743:2001 + A1:2008 (not modified). _ BS EN 61112:2009EN 61112:2009 - 4 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced doc
19、uments are indispensable 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 any amendments) applies. NOTE When an international publication has been modified by common modificati
20、ons, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60060-1 -1)High-voltage test techniques - Part 1: General definitions and test requirements HD 588.1 S1 19912)IEC 60060-2 -1)High-voltage test techniques - Part 2: Measuring systems EN 60060-2 19942)IEC 60068-
21、1 -1)Environmental testing - Part 1: General and guidance EN 60068-119942)IEC 60212 1971 Standard conditions for use prior to and during the testing of solid electrical insulating materials HD 437 S1 1984 IEC 60417 Data-base Graphical symbols for use on equipment - - IEC 61318 -1)Live working - Conf
22、ormity assessment applicable to tools, devices and equipment EN 61318 20082)IEC 61477 -1)Live working - Minimum requirements for the utilization of tools, devices and equipment EN 61477 20092)ISO 2592 -1)Determination of flash and fire points - Cleveland open cup method EN ISO 2592 20012)ISO 2977 -1
23、)Petroleum products and hydrocarbon solvents - Determination of aniline point and mixed aniline point - - ISO 3104 -1)Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity EN ISO 3104 19962)ASTM D 3767 2003 Standard Practice f
24、or Rubber - Measurement of Dimensions - - 1)Undated reference. 2)Valid edition at date of issue. BS EN 61112:2009 2 61112 IEC:2009 CONTENTS 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 requirements .9
25、 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 .13 5.2 Visual
26、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 15 5.5 Mechani
27、cal 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 Test equipme
28、nt22 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 BS EN 61112:200961112 IEC:2009 3 6.1 General .27
29、 6.2 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 insulat
30、ing 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 f
31、or 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 Bibliogra
32、phy40 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 insu
33、lating 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 Figu
34、re 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
35、A.1 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 BS EN 61112:2009 6 61112 IEC:2009 INTRODUCTION This International Standard has been pr
36、epared 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, and occur at the global, regi
37、onal 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, all parties intervening in it
38、s design, manufacture, packaging, distribution, use, maintenance, repair, reuse, recovery and disposal are invited to take account of environmental considerations. BS EN 61112:200961112 IEC:2009 7 LIVE WORKING ELECTRICAL INSULATING BLANKETS 1 Scope This International Standard is applicable to electr
39、ical insulating blankets for the protection of workers from accidental contact with live or earthed electrical conductors, apparatus or circuits and avoidance of short circuits on electrical installations. Electrical insulating blankets in rolls having a width lower than 50 mm are not covered by thi
40、s standard. NOTE 1 For a.c. electrical classification, as well as d.c. use, see 4.2. NOTE 2 This standard gives a.c. test provisions. There is limited history for use in d.c. applications. NOTE 3 See Annex A for suggested maximum voltage use. 2 Normative references The following referenced documents
41、 are indispensable 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 any amendments) applies. IEC 60060-1, High-voltage test techniques Part 1: General definitions and test requ
42、irements IEC 60060-2, High-voltage test techniques Part 2: Measuring systems IEC 60068-1, Environmental testing Part 1: General and guidance IEC 60212:1971, Standard conditions for use prior to and during the testing of solid electrical insulating materials IEC 60417, Graphical symbols for use on eq
43、uipment IEC 61318, Live working Conformity assessment applicable to tools, devices and equipment IEC 61477, Live working Minimum requirements for the utilization of tools, devices and equipment ISO 2592, Determination of flash and fire points Cleveland open cup method ISO 2977, Petroleum products an
44、d hydrocarbon solvents Determination of aniline point and mixed aniline point ISO 3104, Petroleum products Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity ASTM D 3767:2003 (reapproved 2008): Standard practice for rubber Measurement of dimensio
45、ns BS EN 61112:2009 8 61112 IEC:2009 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61318 and the following apply. 3.1 disruptive discharge passage of an arc following dielectric breakdown NOTE 1 The term “sparkover” (in French “amorage”) is used wh
46、en a disruptive discharge occurs in a gaseous or liquid dielectric. NOTE 2 The term “flashover” (in French “contournement”) is used when a disruptive discharge occurs at least partly along the surface of a solid dielectric surrounded by a gaseous or liquid medium. NOTE 3 The term “puncture” (in Fren
47、ch “perforation”) is used when a disruptive discharge occurs through a solid dielectric producing permanent damage. IEV 651-01-18 and definition 2.7.7 of IEC 60743, modified 3.2 elastomer macromolecular material which returns rapidly to its initial dimensions and shape after substantial deformation
48、by a weak stress and release of the stress NOTE 1 The definition applies under room temperature test conditions. NOTE 2 Elastomer is a generic term that includes rubber, latex and elastomeric compounds that may be natural or synthetic or a mixture or a combination of both. It also includes thermopla
49、stic elastomer (TPE) material. ISO 472 modified 3.3 electrical insulating blanket flexible sheeting made of elastomer or plastic material, used to cover conductors or metallic parts which are either energized, dead or earthed NOTE The sheeting is either of various definite shapes or in roll allowing the workers to custom-cut the material to fit the application. Definition 5.2.2 of IEC 60743 and IEV 651-04-06, modif
