1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFluids for electrotechnical applications Unused mineral insulating oils for transformers and switchgearBS EN 60296:2012National forewordThis British Standard is the UK implementa
2、tion of EN 60296:2012. It is identical to IEC 60296:2012. It supersedes BS EN 60296:2004 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeGEL/10, Fluids for electrotechnical applications.A list of organizations represented on this committee can be obtain
3、ed onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 69883 5ICS 29.040 Compliance with a Bri
4、tish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 May 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60296:2012EUROPEAN STANDARD EN 60296 NOR
5、ME EUROPENNE EUROPISCHE NORM April 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in
6、 any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60296:2012 E ICS 29.040 Supersedes EN 60296:2004 + corr. Sep.2004English version Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear (IEC 60296:2012) Fluides pour appl
7、ications lectrotechniques - Huiles minrales isolantes neuves pour transformateurs et appareillages de connexion (CEI 60296:2012) Flssigkeiten fr elektrotechnische Anwendungen - Neue Isolierle auf Minerallbasis fr Transformatoren und Schaltgerte (IEC 60296:2012) This European Standard was approved by
8、 CENELEC on 2012-03-26. 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, France, Germany, Greece, Hungary, Iceland,
11、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60296:2012EN 60296:2012 - 2 - Foreword The text of document 10/878/FDIS, future edition 4 of IEC 60296, prepa
12、red by IEC/TC 10 “Fluids for electrotechnical applications“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60296:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standa
13、rd or by endorsement (dop) 2012-12-26 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-03-26 This document supersedes EN 60296:2004 + corrigendum September 2004. EN 60296:2012 includes the following significant technical changes with respect t
14、o EN 60296:2004: specifications for corrosive sulphur compounds that can lead to copper sulphide deposition in transformers (in non-passivated and passivated oils); definitions of additives in oil; and re-insertion of a missing note on oxidation. Attention is drawn to the possibility that some of th
15、e elements of this document 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 60296:2012 was approved by CENELEC as a European Standard without any modific
16、ation. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60867 NOTE Harmonized as EN 60867. BS EN 60296:2012- 3 - EN 60296:2012 Annex ZA (normative) Normative references to international publications with their corresponding European public
17、ations 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.
18、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 - - Surface active agents - Determination of interfacial tension of solutions of surface active agents by the stirrup or ring method EN
19、14210 - IEC 60076-2 - Power transformers - Part 2: Temperature rise for liquid-immersed transformers EN 60076-2 - IEC 60156 - Insulating liquids - Determination of the breakdown voltage at power frequency - Test method EN 60156 - IEC 60247 - Insulating liquids - Measurement of relative permittivity,
20、 dielectric dissipation factor (tan d) and d.c. resistivity EN 60247 - IEC 60422 - Mineral insulating oils in electrical equipment -Supervision and maintenance guidance EN 60422 - IEC 60475 - Method of sampling insulating liquids EN 60475 - IEC 60628 1985 Gassing of insulating liquids under electric
21、al stress and ionization HD 488 S1 1987 IEC 60666 - Detection and determination of specified additives in mineral insulating oils EN 60666 - IEC 60814 - Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration EN 60814 - IEC 6
22、0970 - Insulating liquids - Methods for counting and sizing particles EN 60970 - IEC 61125 + corr. September + A1 1992 1992 2004 Unused hydrocarbon-based insulating liquids -Test methods for evaluating the oxidation stability EN 61125 + A1 1993 2004 IEC 61198 - Mineral insulating oils - Methods for
23、the determination of 2-furfural and related compounds EN 61198 - IEC 61619 - Insulating liquids - Contamination by polychlorinated biphenyls (PCBs) - Method of determination by capillary column gas chromatography EN 61619 - IEC 61620 - Insulating liquids - Determination of the dielectric dissipation
24、 factor by measurement ofthe conductance and capacitance - Test method EN 61620 - IEC 61868 - Mineral insulating oils - Determination of kinematic viscosity at very low temperatures EN 61868 - BS EN 60296:2012EN 60296:2012 - 4 - Publication Year Title EN/HD Year IEC 62021-1 - Insulating liquids - De
25、termination of acidity - Part 1: Automatic potentiometric titration EN 62021-1 - IEC 62021-2 - 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 unuse
26、d insulating oil EN 62535 2009 ISO 2719 - Determination of flash point - Pensky-Martens closed cup method EN ISO 2719 - ISO 3016 - Petroleum products - Determination of pour point - - ISO 3104 - Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculatio
27、n of dynamic viscosity EN ISO 3104 - ISO 3675 - Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometermethod EN ISO 3675 - ISO 12185 - Crude petrolelum and petroleum products - Determination of density - Oscillating U-tube method EN ISO 12185 - ISO 14596 - P
28、etroleum products - Determination of sulfur content - Wavelength-dispersive X-ray fluorescence spectrometry EN ISO 14596 - ASTM D971 - Standard test method for interfacial tension of oil against water by the ring method - - ASTM D7150 - Standard test method for the determination of gassing character
29、istics of insulating liquids under thermal stress at low temperature - - DIN 51353 - Testing of insulating oils; detection of corrosive sulfur; silver strip test - - IP 346 - Determination of polycyclic aromatics in lubricant base oils and asphaltene free petroleum fractions - Dimethylsulfoxide refr
30、active method - - IP 373 - Determination of the sulphur content of light and middle distillates - Oxidative microcoulometry - - BS EN 60296:2012- 5 - EN 60296:2012 Annex ZB (normative) Special national conditions Special national condition: National characteristic or practice that cannot be changed
31、even over a long period, e.g. climatic conditions, electrical earthing conditions. NOTE If it affects harmonization, it forms part of the European Standard / Harmonization Document. For the countries in which the relevant special national conditions apply these provisions are normative, for other co
32、untries they are informative. Clause Special national condition 7.1 Austria The restricted limits of Chapter 7.1 “Higher oxidation stability and low sulphur content” are to be followed as general specification for oxidation stability (See Table 2). Because of exposed geographical location and cold w
33、eather conditions (snow) transformers are not always accessible for service, which sometimes leads to unforeseen longer service intervals and therefore higher oxidation stability of transformer oil is required. For the same reason and to have an additional criterion for evaluation of oil quality, In
34、terfacial Tension (IFT) is to be used as a general requirement (Table 2, Footnote f)” _ BS EN 60296:2012 2 60296 IEC:2012 CONTENTS INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 9 4 Properties of oil 10 4.1 Functional properties . 10 4.2 Refining and stability . 10
35、 4.3 Performance 10 4.4 Health, safety and environment (HSE) properties 10 5 Classification, identification, general delivery requirements and sampling. 11 5.1 Classification . 11 5.1.1 Classes . 11 5.1.2 Antioxidant additive (inhibitor) content . 11 5.1.3 Lowest cold start energizing temperature (L
36、CSET) 11 5.2 Requirements 11 5.3 Miscibility 11 5.4 Identification and general delivery requirements 11 5.5 Sampling . 12 6 Properties, their significance and test methods . 12 6.1 Viscosity 12 6.2 Pour point . 12 6.3 Water content 12 6.4 Breakdown voltage 13 6.5 Dielectric dissipation factor (DDF)
37、. 13 6.6 Appearance . 13 6.7 Acidity . 13 6.8 Interfacial tension (IFT) . 13 6.9 Sulphur content . 13 6.10 Corrosive and potentially corrosive sulphur . 13 6.11 Additives (see 3.4) 14 6.11.1 General . 14 6.11.2 Antioxidant additives (see 3.5) . 14 6.11.3 Metal passivators 14 6.11.4 Pour point depres
38、sants 15 6.12 Oxidation stability 15 6.13 Gassing tendency 15 6.14 Electrostatic charging tendency (ECT) . 15 6.15 Flash point 15 6.16 Density 15 6.17 Polycyclic aromatic content (PCAs) . 16 6.18 Polychlorinated biphenyl content (PCBs) . 16 6.19 2-Furfural (2-FAL) and related compounds content 16 6.
39、20 Particle content . 16 BS EN 60296:201260296 IEC:2012 3 6.21 DBDS content . 16 6.22 Stray gassing of oil 16 7 Specific requirements for special applications 18 7.1 Higher oxidation stability and low sulphur content . 18 7.2 Electrostatic charging tendency (ECT) . 18 7.3 Gassing tendency 18 Annex A
40、 (informative) Potentially corrosive sulphur . 19 Bibliography 21 Table 1 Maximum viscosity and pour point of transformer oil at lowest cold start energizing temperature (LCSET) . 12 Table 2 General specifications . 17 BS EN 60296:2012 6 60296 IEC:2012 INTRODUCTION This International Standard does n
41、ot 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 limitations prior to use. The mineral insulating oils which are the subject o
42、f this standard should be handled with due regard to personal hygiene. Direct contact with the eyes may cause irritation. In the case of eye contact, irrigation with copious quantities of clean running water should be carried out and medical advice sought. Some of the tests specified in this standar
43、d involve the use of processes that could lead to a hazardous situation. Attention is drawn to the relevant standard for guidance. This standard is applicable to mineral insulating oils, chemicals and used sample containers. The disposal of these items should be carried out according to local regula
44、tions with regard to their impact on the environment. Every precaution should be taken to prevent release of mineral insulating oil into the environment. BS EN 60296:201260296 IEC:2012 7 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS UNUSED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEAR 1 Scope T
45、his International Standard is applicable to specifications and test methods for unused mineral insulating oils (see Clause 3 for definitions). It applies to oil delivered to the agreed point and time of delivery, intended for use in transformers, switchgear and similar electrical equipment in which
46、oil is required for insulation and heat transfer. These oils are obtained by refining, modifying and/or blending of petroleum products and other hydrocarbons. Oils with and without additives are both within the scope of this standard. This standard is applicable only to unused mineral insulating oil
47、s. Recycled oils are beyond the scope of this standard. NOTE Definitions and specifications for recycled oils will be covered by IEC 627011. This standard does not apply to mineral insulating oils used as impregnants in cables or capacitors. 2 Normative references The following documents, in whole o
48、r 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 60076-2, Power transformers Part 2: Te
49、mperature rise for liquid-immersed transformers IEC 60156, Insulating liquids Determination of the breakdown voltage at power frequency Test method IEC 60247, Insulating liquids Measurement of relative permittivity, dielectric dissipation factor (tan ) and d.c. resistivity IEC 60422, Mineral insulating oils in electrical equipment Supervision and maintenance guidance IEC 60475, Method of sampling liquid dielectrics IEC 60628:1985, Gassing of insulating liquids under electrical stress and ioniza
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