1、 IEC 60626-2 Edition 3.0 2009-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Combined flexible materials for electrical insulation Part 2: Methods of test Matriaux combins souples destins lisolement lectrique Partie 2: Mthodes dessai IEC 60626-2:2009 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright
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16、22 919 02 11 Fax: +41 22 919 03 00 IEC 60626-2 Edition 3.0 2009-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Combined flexible materials for electrical insulation Part 2: Methods of test Matriaux combins souples destins lisolement lectrique Partie 2: Mthodes dessai INTERNATIONAL ELECTROTECHNICAL C
17、OMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE K ICS 17.220.99; 29.035.01 PRICE CODE CODE PRIX ISBN 2-8318-1063-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60626-2 IEC:2009 INTERNATIONAL ELECTROTECHNICA
18、L COMMISSION _ COMBINED FLEXIBLE MATERIALS FOR ELECTRICAL INSULATION Part 2: Methods of test FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IE
19、C 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, Technical Reports, Publicly Available Specifications (PAS)
20、 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, governmental and non- governmental organizations liaising with
21、 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 agreements of IEC on technical matters express, as nea
22、rly 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 use and are accepted by IEC National Committees in tha
23、t 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 promote international uniformity, IEC National Committee
24、s 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 indicated in the latter. 5) IEC provides no marking proce
25、dure 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 to IEC or its directors, employees, servants or agen
26、ts 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) and expenses arising out of the publication, use of,
27、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. 9) Attention is drawn to the possibility that some o
28、f 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 60626-2 has been prepared by IEC technical committee 15: Solid electrical insulating materials. This third edition c
29、ancels and replaces the second edition published in 1995 and constitutes a major technical revision. The main changes from the previous edition are as follows: some tests such as for edge tearing and stiffness, actually not used and not listed in the requirements of Part 3, were deleted. 60626-2 IEC
30、:2009 3 The text of this standard is based on the following documents: CDV Report on voting 15/470/CDV 15/512/RVC 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 t
31、he ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60626 series, under the general title Combined flexible materials for electrical insulation, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance
32、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. 4 60626-2 IEC:2009 INTRODUCTION This International standard deals with tes
33、t methods of combined flexible materials consisting of two or more different insulating materials laminated together as described in IEC 60626-1. The components of flexible combined materials are polymer film and fibrous sheet material. This standard does not include materials based on mica paper, a
34、s primary component, covered by IEC 60371, but mica paper may be used as complementary material. The series has three parts describing: Part 1: Definitions and general requirements (IEC 60626-1) Part 2: Methods of test (IEC 60626-2) Part 3: Specifications for individual materials (IEC 60626-3) 60626
35、-2 IEC:2009 5 COMBINED FLEXIBLE MATERIALS FOR ELECTRICAL INSULATION Part 2: Methods of test 1 Scope This International Standard provides the test methods for combined flexible materials for electrical insulation. Some properties and relevant test methods, according to the perfomance requirements of
36、IEC 60626-3, were confirmed. Other test methods are described as a supplement of guidance for further specification that could be agreed between customer and supplier to meet specific needs of the end use. Materials which conform to this specification meet established levels of performance. However,
37、 the selection of material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. SAFETY WARNING It is the responsibility of the user of the methods contained or referred to in
38、this document to ensure that they are used in a safe manner. 2 Normative references The following referenced documents 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 (
39、including any amendments) applies. IEC 60216-4-1:2006, Electrical insulating materials Thermal endurance properties Part 4: Ageing ovens Section 1: Single-chamber ovens IEC 60243-1:1998, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60626-3:2008, Com
40、bined flexible materials for electrical insulation Part 3: Specifications for individual materials ISO 536: 1995, Paper and board Determination of grammage 3 General requirements on tests Unless otherwise specified, the test specimens, after being cut, shall be conditioned for 24 h at (23 2) C and (
41、50 5) % relative humidity. If the test is not conducted in this standard atmosphere, the test shall be made within 5 min after removal from the standard atmosphere. 6 60626-2 IEC:2009 4 Thickness 4.1 Test apparatus 4.1.1 An external screw type micrometer having measuring faces of 6 mm to 8 mm diamet
42、er. The measuring faces shall be flat to within 0,001 mm and parallel to within 0,003 mm. The pitch of the screw shall be 0,5 mm and the graduations shall be 50 divisions of 0,01 mm, enabling readings to be estimated to 0,002 mm. The pressure exerted on the specimens shall be 100 kPa as described in
43、 4.1.2. 4.1.2 A dead-weight dial type micrometer having two ground and lapped concentric circular surfaces flat to within 0,001 mm and parallel to within 0,003 mm. The upper surface shall be 6 mm to 8 mm in diameter. The lower surface shall be larger than the upper one. The upper surface shall move
44、on the axis perpendicular to the surfaces. The dial shall be graduated to read directly to 0,002 mm. The frame of the micrometer shall be of such rigidity that a force of 15 N applied to dial housing, out of contact with either the weight or the presser foot spindle, will produce a deflection of the
45、 frame not greater than 0,002 mm as indicated on the micrometer dial. The pressure exerted on the specimen shall be 100 kPa. 4.1.3 The setting gauge used to check the instruments shall be accurate to within 0,001 mm of the nominal size. The indicated thickness by the instruments shall not differ by
46、more than 0,005 mm from the gauge block. NOTE For materials with high compressibility and special structure, other values for the area and the pressure of the measuring faces may be specified. 4.2 Test specimens 4.2.1 General In the “as received“ condition. 4.2.2 Full width and sheet material Full w
47、idth material delivered on rolls or sheet material cut to length. One specimen 25 mm wide and whose length is equal to the width of the roll or sheet shall be cut across the entire width of the material. 4.2.3 Slit material (tape) One specimen 1 m long shall be cut from the roll. 4.3 Procedure Measu
48、re the thickness of the material, when not constrained in any way, at nine points spaced not less than 75 mm apart along the length of the test specimens. All joints (or splices) shall be excluded from the area of the test. 4.4 Results The values of the nine measurements shall be recorded. The centr
49、al value is taken as the thickness of the material. 5 Substance (weight per unit area or grammage) Because of the electrical engineering practice of using the word substance, this has been used here. The substance of combined materials shall be measured in accordance with the method described in ISO 536, with the following exceptions: 60626-2 IEC:2009 7 Clauses 5 and 6 of ISO 536 are ignored
