1、 IEC 60212 Edition 3.0 2010-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Standard conditions for use prior to and during the testing of solid electrical insulating materials Conditions normales observer avant et pendant les essais de matriaux isolants lectriques solides IEC 60212:2010 THIS PUBLICA
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16、ctez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60212 Edition 3.0 2010-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Standard conditions for use prior to and during the testing of solid electrical insulating materials Conditions normales observer avant et pendant les ess
17、ais de matriaux isolants lectriques solides INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 17.220.99; 29.035.01 PRICE CODE CODE PRIX ISBN 978-2-88912-292-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission
18、Electrotechnique Internationale 2 60212 IEC:2010 CONTENTS FORE WORD 3 INTRODUCTION 5 1 Scop e 6 2 Normative references 6 3 Terms and definitions 6 4 Temperature and humidity (or liquid immersion) recommended for preconditioning, conditioning and testing 8 5 Period of conditioning . 8 6 Procedures fo
19、r atmospheric preconditioning, conditioning, and testing . 9 7 Liquid immersion, conditioning and testing 9 8 Standard reference atmosphere . 10 9 Code for specifying preconditioning, conditioning and testing 10 10 Report . 10 Table 1 Codes for preconditioning, conditioning and testing . 10 Table 2
20、Standard atmospheric conditions for testing and conditioning . 11 Table 3 Standard liquid immersion conditions for testing and conditioning . 12 Table 4 List of preferred periods for preconditioning and conditioning . 12 60212 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ STANDARD CONDITION
21、S FOR USE PRIOR TO AND DURING THE TESTING OF SOLID ELECTRICAL INSULATING MATERIALS 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 pr
22、omote 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) and Guide
23、s (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 the IEC a
24、lso 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 nearly as pos
25、sible, 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 that sense. W
26、hile 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 Committees undertak
27、e 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 itself does not provide any attesta
28、tion of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of
29、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 IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or
30、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) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable fo
31、r 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. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60212 has been pr
32、epared by IEC technical committee 112: Evaluation and qualification of electrical insulating materials and systems. This third edition cancels and replaces the second edition published in 1971 and constitutes a technical revision. The significant technical changes with respect to the previous editio
33、n are as follows: the scope and normative references have been updated and terms and definitions completely reviewed; technical details in Table 2 have been aligned to todays usage. 4 60212 IEC:2010 The text of this standard is based on the following documents: CDV Report on voting 112/148/CDV 112/1
34、62/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 the ISO/IEC Directives, Part 2. The committee has decided that the contents of this amendment and the base p
35、ublication will remain unchanged until the stability 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. 60212 IEC:2010 5 INTRODUCTIO
36、N Many electrical insulating materials have properties which are affected by the temperature or humidity, or both, of the atmospheres to which they are subjected. It is usually necessary, therefore, when testing these materials, to control both temperature and humidity prior to testing, as well as t
37、he conditions in which the specimens are actually tested. The selection of appropriate conditions and tests should be decided according to the materials specification and the intended application. Unless otherwise specified, specimens should be conditioned and measured in the same climate as that in
38、 which they are to be tested. When giving results of tests on electrical insulating materials likely to be affected by those factors, it is important that the relevant conditions to which the test specimens were exposed are reported. Specifications for such materials should, therefore, identify the
39、atmospheres to which the test specimens should be exposed before testing and the conditions under which the tests are to be made. 6 60212 IEC:2010 STANDARD CONDITIONS FOR USE PRIOR TO AND DURING THE TESTING OF SOLID ELECTRICAL INSULATING MATERIALS 1 Scope This International Standard gives the accept
40、ed conditions of exposure time, temperature, atmospheric humidity and liquid immersion for use in testing solid electrical insulating materials. The range is sufficiently wide to enable suitable conditions to be selected so that either of the primary objects, set out below as a) and b), of condition
41、ing can be achieved. These objectives aim to obtain greater reproducibility of test results by: a) partly counteracting the variations of the properties of the material due to the past history of the test specimens (often known as “normalizing“, here called preconditioning), and b) ensuring uniformi
42、ty of conditions during the testing. This standard is not intended to be applied for determining the influence of exposure to certain temperatures and humidity or immersions in liquids, on the properties of a material. Procedures pertaining to the effect of an environment on a material are given in
43、various parts of IEC 60068. 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 (including any amendments) applies
44、. IEC 60068-1:1988, Environmental testing Part 1: General and guidance Amendment 1 (1992) IEC 60216-4-1, Electrical insulating materials Thermal endurance properties Part 4-1: Ageing ovens Single-chamber ovens ISO 62:2008: Plastics Determination of water absorption 3 Terms and definitions For the pu
45、rposes of this document, the following terms and definitions apply. 3 . 1 insulating material solid with negligibly low electric conductivity, used to separate conducting parts at different electrical potentials NOTE 1 In English, the term “insulating material“ is sometimes used in a broader sense t
46、o also designate insulating liquids and gases. NOTE 2 An insulating material may be a solid, a liquid or a gas, or a mixture of these. This standard refers only to a solid insulating material. 3 . 2 specimen typical sample of the insulating material under test, as described in the relevant test spec
47、ification 60212 IEC:2010 7 3 . 3 preconditioning treatment of a specimen with the object of removing or partly counteracting the effect of its previous history with respect, principally, to the temperature and humidity to which it has been exposed NOTE 1 This treatment is sometimes known as “normali
48、zing“. NOTE 2 Preconditioning usually precedes conditioning of a specimen. When the combination of temperature and humidity for conditioning is the same as that prescribed for preconditioning, the preconditioning may be said to take the place of conditioning. NOTE 3 Preconditioning may be effected b
49、y subjecting the specimen to climatic, electrical or any other conditions required by the relevant test specification. 3 . 4 conditioning (of a specimen) subjection of a specimen for a specified duration to specific climatic conditions (usually a specified temperature and a specified relative humidity) or to an atmosphere of specified relative humidity or to complete immersion in water or other liquid at a specified te
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