EN 60422-2013 en Mineral insulating oils in electrical equipment - Supervision and maintenance guidance.pdf

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1、BSI Standards PublicationMineral insulating oils in electrical equipment Supervision and maintenance guidanceBS EN 60422:2013Incorporating corrigendumDecember 2013BS EN 60422:2013National forewordThis British Standard is the UK implementation of EN 60422:2013. It is identical to IEC 60422:2013, inco

2、rporating corrigendum December 2013. It supersedes BS EN 60422:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/10, Fluids for electrotechnical applications.A list of organizations represented on this committee can be obtained on request to its

3、 secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 85538 2ICS 29.040.10; 29.130.01Compliance with a British

4、 Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2013.Amendments/corrigenda issued since publicationDate Text affected31 March 2014 Implementation of IEC corrigendum December 2013:

5、Formula (A.1) addedBRITISH STANDARDEUROPEAN STANDARD EN 60422 NORME EUROPENNE EUROPISCHE NORM May 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17,

6、 B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60422:2013 E ICS 29.040.10 Supersedes EN 60422:2006 English version Mineral insulating oils in electrical equipment - Supervision and maintenance guidance (IE

7、C 60422:2013) Huiles minrales isolantes dans les matriels lectriques - Lignes directrices pour la maintenance et la surveillance (CEI 60422:2013) Isolierle auf Minerallbasis in elektrischen Betriebsmitteln - Leitlinie zur berwachung und Wartung (IEC 60422:2013) This European Standard was approved by

8、 CENELEC on 2013-02-14. 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 national st

9、andards may be obtained on application to the CEN-CENELEC Management Centre 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 lang

10、uage and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fran

11、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60422:2013EN 60422:2013 - 2 - Foreword The text of document 10/894/FDI

12、S, future edition 4 of IEC 60422, prepared by IEC TC 10 “Fluids for electrotechnical applications“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60422:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publ

13、ication of an identical national standard or by endorsement (dop) 2013-11-14 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-02-14 This document supersedes EN 60422:2006. EN 60422:2013 represents a major revision of EN 60422:2006, in order to

14、 bring in line this standard with latest development of oil condition monitoring, containing new limits for oil parameters, suggested corrective actions in the tables and new test methods. The action limits for all oil tests have been revised and changes made where necessary to enable users to use c

15、urrent methodology and comply with requirements and regulations affecting safety and environmental aspects. In addition, EN 60422:2013 incorporates changes introduced in associated standards since EN 60422:2006 was published. Attention is drawn to the possibility that some of the elements of this do

16、cument may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60422:2013 was approved by CENELEC as a European Standard without any modification. In the officia

17、l version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60567 NOTE Harmonised as EN 60567. IEC 60599 NOTE Harmonised as EN 60599. IEC 61198 NOTE Harmonised as EN 61198. ISO 12185 NOTE Harmonised as EN ISO 12185. BS EN 60422:2013- 3 - EN 60422:2013 Annex ZA

18、(normative) Normative references to international publications with their corresponding European publications 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

19、 undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60156 - Insulating liquids -

20、Determination of the breakdown voltage at power frequency - Test method EN 60156 - IEC 60247 - Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan ) and d.c. resistivity EN 60247 - IEC 60296 2012 Fluids for electrotechnical applications - Unused mineral insu

21、lating oils for transformers and switchgear EN 60296 2012 IEC 60475 - Method of sampling insulating liquids EN 60475 - IEC 60666 2010 Detection and determination of specified additives in mineral insulating oils EN 60666 2010 IEC 60814 - Insulating liquids - Oil-impregnated paper and pressboard - De

22、termination of water by automatic coulometric Karl Fischer titration EN 60814 - IEC 60970 - Insulating liquids - Methods for counting and sizing particles EN 60970 - IEC 61125 + corr. September 1992 1992 Unused hydrocarbon-based insulating liquids - Test methods for evaluating the oxidation stabilit

23、y EN 61125 1993 IEC 61619 - Insulating liquids - Contamination by polychlorinated biphenyls (PCBs) - Method of determination by capillary column gas chromatography EN 61619 - IEC 62021-1 - Insulating liquids - Determination of acidity - Part 1: Automatic potentiometric titration EN 62021-1 - IEC 620

24、21-2 - Insulating liquids - Determination of acidity - Part 2: Colourimetric titration EN 62021-2 - IEC 62535 2008 Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil EN 62535 2009 IEC 62697-1 2012 Test method for quantitative determinati

25、on of corrosive sulfur compounds in unused and used insulating liquids - Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS) EN 62697-1 2012 EN 14210 - Surface active agents - Determination of interfacial tension of solutions of surface active agents by the stirrup or ring

26、 method - - BS EN 60422:2013EN 60422:2013 - 4 - Publication Year Title EN/HD Year ISO 2049 - Petroleum products - Determination of colour (ASTM scale) - - ISO 2719 - Determination of flash point - Pensky-Martens closed cup method EN ISO 2719 - ISO 3016 - Petroleum products - Determination of pour po

27、int - - ISO 3104 - Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity EN ISO 3104 - ISO 3675 - Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometermethod EN ISO 3675 - ISO 4406 19

28、99 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles - - ASTM D971 - Standard test method for interfacial tension of oil against water by the ring method - - ASTM D1275 2006 Standard test method for corrosive sulfur in electrical insulating oils - - DIN

29、 51353 - Testing of insulating oils; detection of corrosive sulfur; silver strip test - - BS EN 60422:2013 2 60422 IEC:2013 CONTENTS INTRODUCTION . 6 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 9 4 Properties and deterioration/degradation of oil . 10 5 Oil tests and their signif

30、icance 11 5.1 General . 11 5.2 Colour and appearance . 12 5.3 Breakdown voltage 12 5.4 Water content 12 5.4.1 General . 12 5.4.2 Water in oil 12 5.4.3 Water content in the oil/paper-system 14 5.4.4 Interpretation of results 15 5.5 Acidity . 15 5.6 Dielectric dissipation factor (DDF) and resistivity

31、. 15 5.7 Inhibitor content and oxidation stability 18 5.7.1 Oxidation stability 18 5.7.2 Monitoring of uninhibited oils . 18 5.7.3 Monitoring of inhibited oils . 18 5.8 Sediment and sludge . 18 5.9 Interfacial tension (IFT) . 19 5.10 Particle count 19 5.11 Flash point 19 5.12 Compatibility of insula

32、ting oils . 20 5.13 Pour point . 20 5.14 Density 20 5.15 Viscosity 20 5.16 Polychlorinated biphenyls (PCBs) 21 5.17 Corrosive sulphur 21 5.18 Dibenzyl disulphide (DBDS) 22 5.19 Passivator . 22 6 Sampling of oil from equipment 22 7 Categories of equipment . 23 8 Evaluation of mineral insulating oil i

33、n new equipment . 23 9 Evaluation of oil in service 24 9.1 General . 24 9.2 Frequency of examination of oils in service . 25 9.3 Testing procedures 26 9.3.1 General . 26 9.3.2 Field tests 26 9.3.3 Laboratory tests 27 9.4 Classification of the condition of oils in service 27 9.5 Corrective action . 2

34、7 BS EN 60422:201360422 IEC:2013 3 10 Handling and storage . 32 11 Treatment . 33 11.1 WARNING . 33 11.2 Reconditioning 34 11.2.1 General . 34 11.2.2 Reconditioning equipment . 35 11.2.3 Application to electrical equipment 36 11.3 Reclaiming 37 11.3.1 General . 37 11.3.2 Reclaiming by percolation 37

35、 11.3.3 Reclaiming by contact . 38 11.3.4 Renewal of additives . 38 11.4 Decontamination of oils containing PCBs 38 11.4.1 General . 38 11.4.2 Dehalogenation processes using sodium and lithium derivatives . 38 11.4.3 Dehalogenation processes using polyethylene glycol and potassium hydroxide (KPEG) 3

36、9 11.4.4 Dehalogenation in continuous mode by closed circuit process . 39 12 Replacement of oil in electrical equipment 39 12.1 Replacement of oil in transformers rated below 72,5 kV and in switchgear and associated equipment . 39 12.2 Replacement of oil in transformers rated 72,5 kV and above . 39

37、12.3 Replacement of oil in electrical equipment contaminated with PCB 40 13 Passivation . 40 Annex A (informative) Evaluating water in oil and insulation. 41 Annex B (informative) Particles 43 Annex C (informative) Test method for determination of sediment and sludge 44 Bibliography 45 Figure 1 Exam

38、ple of variation in saturation water content with oil temperature and acidity for insulating oil originally conforming to IEC 60296 . 14 Figure 2 Example of variation of resistivity with temperature for insulating oils . 17 Figure A.1 Typical correction factors 41 Table 1 Tests for in-service minera

39、l insulating oils . 11 Table 2 Categories of equipment . 23 Table 3 Recommended limits for mineral insulating oils after filling in new electrical equipment prior to energization . 24 Table 4 Recommended frequency of testing a26 Table 5 Application and interpretation of tests (1 of 4) . 28 Table 6 S

40、ummary of typical actions 32 Table 7 Conditions for processing inhibited and/ or passivator containing mineral insulating oils 35 Table A.1 Guidelines for interpreting data expressed in per cent saturation . 42 Table B.1 Typical contamination levels (particles) encountered on power transformer insul

41、ating oil as measured using IEC 60970 43 BS EN 60422:2013 6 60422 IEC:2013 INTRODUCTION Insulating mineral oils are used in electrical equipment employed in the generation, transmission, distribution and use of electrical energy, so that the amount of oil in service, worldwide, amounts to hundreds o

42、f millions of kilograms. Monitoring and maintaining oil quality is essential to ensure the reliable operation of oil-filled electrical equipment. Codes of practice for this purpose have been established by electrical power authorities, power companies and industries in many countries. A review of cu

43、rrent experience reveals a wide variation of procedures and criteria. It is possible, however, to compare the value and significance of standardized oil tests and to recommend uniform criteria for the evaluation of test data. If a certain amount of oil deterioration (by degradation or contamination)

44、 is exceeded, there is inevitably some erosion of safety margins and the question of the risk of premature failure should be considered. While the quantification of the risk can be very difficult, a first step involves the identification of potential effects of increased deterioration. The philosoph

45、y underlying this standard is to furnish users with as broad a base of understanding of oil quality deterioration as is available, so that they can make informed decisions on inspection and maintenance practices. Unused mineral oils are limited resources and should be handled with this in mind. Used

46、 mineral oils are, by most regulations, deemed to be controlled waste. If spills occur this may have a negative environmental impact especially if the oil is contaminated by persistent organic pollutants such as polychlorinated biphenyls (PCBs). This International Standard, whilst technically sound,

47、 is mainly intended to serve as a common basis for the preparation of more specific and complete codes of practice by users in the light of local circumstances. Sound engineering judgement will have to be exerted in seeking the best compromise between technical requirements and economic factors. Ref

48、erence should also be made to instructions from the equipment manufacturer. General caution This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate health and safety practi

49、ces and determine the applicability of regulatory limitations prior to use. The mineral oils and oil additives which are the subject of this standard should be handled with due regard to personal hygiene. Direct contact with the eyes may cause slight irritation. In the case of eye contact, irrigation with copious quantities of clean running water should be carried out and medical advice sought. For more information, refer to the safety data sheet provided by the manufacturer. Some of the tests specified in this standard invol