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    IEC 62770-2013 Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment《电工流体.变压器及类似电气设备未使用的天然酯》.pdf

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    IEC 62770-2013 Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment《电工流体.变压器及类似电气设备未使用的天然酯》.pdf

    1、 IEC 62770 Edition 1.0 2013-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Fluids for electrotechnical applications Unused natural esters for transformers and similar electrical equipment Fluides pour applications lectrotechniques Esters naturels neufs pour transformateurs et matriels lectriques ana

    2、logues IEC62770:2013 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,

    3、 without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National

    4、 Committee for further information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit

    5、de la CEI ou du Comit national de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pays de rsidence. IEC Cent

    6、ral Office Tel.: +41 22 919 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, el

    7、ectronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Useful links: IEC publications search - www.iec.ch/

    8、searchpub The advanced search enables you to find IEC publications by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC pu

    9、blications. Just Published details all new publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, wit

    10、h equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary (IEV) on-line. Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec

    11、.ch. A propos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications CEI Le contenu technique des pu

    12、blications de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Liens utiles: Recherche de publications CEI - www.iec.ch/searchpub La recherche avance vous permet de trouver des publications CEI en utilisant d

    13、iffrents critres (numro de rfrence, texte, comit dtudes,). Elle donne aussi des informations sur les projets et les publications remplaces ou retires. Just Published CEI - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications de la CEI. Just Published dtaille les nouvelles publi

    14、cations parues. Disponible en ligne et aussi une fois par mois par email. Electropedia - www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans

    15、 les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International (VEI) en ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62770 Edition 1.0 2013-11 INTER

    16、NATIONAL STANDARD NORME INTERNATIONALE Fluids for electrotechnical applications Unused natural esters for transformers and similar electrical equipment Fluides pour applications lectrotechniques Esters naturels neufs pour transformateurs et matriels lectriques analogues INTERNATIONAL ELECTROTECHNICA

    17、L COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q ICS 29.040 PRICE CODE CODE PRIX ISBN 978-2-8322-1191-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication f

    18、rom an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 62770 IEC:2013 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 9 4 Properties, their significance and test methods 9 4.1

    19、 General 9 4.2 Physical properties 9 Appearance 9 4.2.1Viscosity . 10 4.2.2Pour point . 10 4.2.3Water content . 10 4.2.4Density . 10 4.2.54.3 Electrical properties . 10 Breakdown voltage . 10 4.3.1Dielectric dissipation factor (DDF) 10 4.3.2Relative permittivity (dielectric constant) . 11 4.3.34.4 C

    20、hemical properties . 11 Acidity 11 4.4.1Corrosive sulfur 11 4.4.2Additive content 11 4.4.3Furfural content 11 4.4.44.5 Performance 11 Oxidation stability . 11 4.5.1Total acidity 12 4.5.2Viscosity . 12 4.5.3Dielectric dissipation factor (DDF) 12 4.5.44.6 Health, safety and environmental (HSE) propert

    21、ies 12 Fire point and flash point 12 4.6.1Polychlorinated biphenyls (PCBs) . 12 4.6.2Biodegradation . 12 4.6.3Toxicity . 12 4.6.45 Classification, identification, general delivery requirements and sampling 12 5.1 Classification . 12 5.2 Identification and general delivery requirements 13 5.3 Samplin

    22、g 13 Annex A (normative) Summary of the test method for evaluating oxidation stability of unused natural esters 15 A.1 Introductory remark 15 A.2 Test conditions 15 A.3 Precision 15 A.4 Relative repeatability (r) . 15 A.5 Relative reproducibility (R) . 15 Annex B (informative) Specifications of low-

    23、viscosity insulating fluids derived from natural esters 16 Bibliography 17 62770 IEC:2013 3 Table 1 General specifications . 14 Table A.1 Relative repeatability and relative reproducibility obtained for different parameters during RRT . 15 Table B.1 Specifications for low-viscosity of monoesters der

    24、ived from natural esters . 16 4 62770 IEC:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FLUIDS FOR ELECTROTECHNICAL APPLICATIONS UNUSED NATURAL ESTERS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for

    25、standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC 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 publishe

    26、s International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) 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 part

    27、icipate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement be

    28、tween 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 subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publicat

    29、ions 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 content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for

    30、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 possible in their national and regional publications. Any divergence between any IEC Publication and the correspondi

    31、ng national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation 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 se

    32、rvices carried out by independent certification bodies. 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 IEC N

    33、ational 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) Attentio

    34、n 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. IEC s

    35、hall not be held responsible for identifying any or all such patent rights. International Standard IEC 62770 has been prepared by IEC technical committee 10: Fluids for electrotechnical applications. The text of this standard is based on the following documents: FDIS Report on voting 10/909/FDIS 10/

    36、933/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. 62770 IEC:2013 5 The committee has decided that the contents of this public

    37、ation 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. 6 62770 IEC:2013 INTRODUCTION Bec

    38、ause of their higher fire points and better environmental compatibility relative to petroleum derived insulating mineral oil, the use of vegetable oils and other natural esters is on the rise as insulating and heat transfer fluids in electrical devices such as transformers. This standard sets perfor

    39、mance criteria for unused natural esters earmarked for electrical applications. However, the use of natural esters is recommended only for equipment that is not open to the atmosphere, e.g. sealed transformers and reactors because these fluids are prone to rapid oxidation. This International Standar

    40、d does not purport to address all the safety problems associated with its use. It is the responsibility of the user of the standard to establish appropriate health and safety practices and determine the applicability of regulatory limitation prior to use. Unused natural esters which are the subject

    41、of this standard should be handled with due regard to personal hygiene. Direct contact with eyes should be avoided. In case of eye contact, irrigation with copious amounts of clean running water should be carried out and medical advice sought. Performance of some of the tests mentioned in this stand

    42、ard could lead to a hazardous situation. Attention is drawn to the relevant standard test method for guidance. The disposal of natural esters, chemicals and sample containers mentioned in this standard should be carried out in accordance with current national legislation with regard to the impact on

    43、 the environment. Every precaution should be taken to prevent the release of natural esters into the environment. 62770 IEC:2013 7 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS UNUSED NATURAL ESTERS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT 1 Scope This International Standard describes specificat

    44、ions and test methods for unused natural esters in transformers and similar oil-impregnated electrical equipment in which a liquid is required as an insulating and heat transfer medium. Use of natural esters is not recommended for electrical equipment that is open to the atmosphere. In this standard

    45、 the term “natural esters” applies to insulating fluids for transformers and similar electrical equipment with suitable biodegradability and environmental compatibility. Such natural esters are vegetable oils obtained from seeds and oils obtained from other suitable biological materials and delivere

    46、d to an agreed point, at a set time period. These oils are comprised of triglycerides. Natural esters with additives are within the scope of this standard. Because of their different chemical composition, natural esters differ from insulating mineral oils and other insulating fluids that have high f

    47、ire points, such as synthetic esters or silicone fluids. Natural, ester-derived insulating fluids with low viscosity have been introduced but are not covered by this standard. Pertinent properties of such fluids are given in Annex B. This standard is applicable only to unused natural esters. Reclaim

    48、ed natural esters and natural esters blended with non-natural esters fluids are beyond the scope of this standard. The chemical nomenclature and scientific notations used in the standard are in accordance with the IUPAC handbook (Quantities, Units and Symbols in Physical Chemistry). 2 Normative refe

    49、rences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60076-14, Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials IEC 60156, Insulating


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