ASTM_D_6871_-_03_2008.pdf

Designation:D687103(Reapproved 2008)Standard Specification forNatural(Vegetable Oil)Ester Fluids Used in ElectricalApparatus1This standard is issued under the fixed designation D6871;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers a high fire point natural veg-etable oil ester insulating fluid for use as a dielectric andcooling medium in new and existing power and distributionelectrical apparatus such as transformers and attendant equip-ment.1.2 Natural vegetable oil ester insulating fluid differs fromconventional mineral oil and other high fire point(or“less-flammable”)fluids in that it is an agricultural product derivedfrom vegetable oils rather than refined from petroleum basestocks or synthesized from organic precursors.1.3 This specification is intended to define a natural veg-etable oil ester electrical insulating fluid that is compatible withtypical materials of construction of existing apparatus and willsatisfactorily maintain its functional characteristic in thisapplication.The material described in this specification maynot be miscible with some synthetic electrical insulatingliquids.The user should contact the manufacturer of the naturalester insulating fluid for guidance in this respect.1.4 This specification applies only to new insulating fluid asreceived prior to any processing.The user should contact themanufacturer of the equipment or fluid if questions of recom-mended characteristics or maintenance procedures arise.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2D88 Test Method for Saybolt ViscosityD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD117 Guide for Sampling,Test Methods,and Specificationsfor Electrical Insulating Oils of Petroleum OriginD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D877 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using Disk ElectrodesD923 Practices for Sampling Electrical Insulating LiquidsD924 Test Method for Dissipation Factor(or Power Factor)and Relative Permittivity(Dielectric Constant)of Electri-cal Insulating LiquidsD974 Test Method for Acid and Base Number by Color-Indicator TitrationD1275 Test Method for Corrosive Sulfur in Electrical Insu-lating OilsD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD1500 Test Method for ASTM Color of Petroleum Products(ASTM Color Scale)D1524 Test Method for Visual Examination of Used Elec-trical Insulating Oils of Petroleum Origin in the FieldD1533 Test Method for Water in Insulating Liquids byCoulometric Karl Fischer TitrationD1816 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using VDE ElectrodesD1903 Practice for Determining the Coefficient of ThermalExpansion of Electrical Insulating Liquids of PetroleumOrigin,and AskarelsD2300 Test Method for Gassing of Electrical InsulatingLiquids Under Electrical Stress and Ionization(ModifiedPirelli Method)D2717 Test Method for Thermal Conductivity of LiquidsD2766 Test Method for Specific Heat of Liquids and SolidsD2864 Terminology Relating to Electrical Insulating Liq-uids and GasesD3300 Test Method for Dielectric Breakdown Voltage ofInsulating Oils of Petroleum Origin Under Impulse Con-ditions1This specification is under the jurisdiction of ASTM Committee D27 onElectrical Insulating Liquids and Gasesand is the direct responsibility of Subcom-mittee D27.02 on Gases and Non-Mineral Oil Liquids.Current edition approved Oct.1,2008.Published December 2008.Originallyapproved in 2003.Last previous edition approved in 2003 as D6871-03.DOI:10.1520/D6871-03R08.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D4059 Test Method for Analysis of Polychlorinated Biphe-nyls in Insulating Liquids by Gas Chromatography2.2 National Fire Protection Association Standard:National Electrical Code Article 450-2333.Terminology3.1 DefinitionsDefinitions of terms related to this specifi-cation are given in Terminology D2864.Vegetable oil naturalester:vegetable oil containing ester linkages,typically triglyc-e