ASTM_D_3487_-_09.pdf

Designation:D348709Standard Specification forMineral Insulating Oil Used in Electrical Apparatus1This standard is issued under the fixed designation D3487;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification covers new mineral insulating oil ofpetroleum origin for use as an insulating and cooling mediumin new and existing power and distribution electrical apparatus,such as transformers,regulators,reactors,circuit breakers,switchgear,and attendant equipment.1.2 This specification is intended to define a mineral insu-lating oil that is functionally interchangeable and miscible withexisting oils,is compatible with existing apparatus and withappropriate field maintenance,2and will satisfactorily maintainits functional characteristics in its application in electricalequipment.This specification applies only to new insulating oilas received prior to any processing.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 ASTM Standards:3D88 Test Method for Saybolt ViscosityD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D611 Test Methods for Aniline Point and Mixed AnilinePoint of Petroleum Products and Hydrocarbon SolventsD877 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 LiquidsD971 Test Method for Interfacial Tension of Oil AgainstWater by the Ring MethodD974 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(SpecificGravity),or API Gravity of Crude Petroleum and LiquidPetroleum Products 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 Oils of Petroleum Origin Using VDE Elec-trodesD1903 Practice for Determining the Coefficient of ThermalExpansion of Electrical Insulating Liquids of PetroleumOrigin,and AskarelsD2112 Test Method for Oxidation Stability of InhibitedMineral Insulating Oil by Pressure VesselD2300 Test Method for Gassing of Electrical InsulatingLiquids Under Electrical Stress and Ionization(ModifiedPirelli Method)D2440 Test Method for Oxidation Stability of MineralInsulating OilD2668 Test Method for 2,6-di-tert-Butyl-p-Cresol and 2,6-di-tert-Butyl Phenol in Electrical Insulating Oil by Infra-red AbsorptionD2717 Test Method for Thermal Conductivity of LiquidsD2766 Test Method for Specific Heat of Liquids and SolidsD3300 Test Method for Dielectric Breakdown Voltage ofInsulating Oils of Petroleum Origin Under Impulse Con-ditionsD4059 Test Method for Analysis of Polychlorinated Biphe-nyls in Insulating Liquids by Gas Chromatography1This specification is under the jurisdiction of ASTM Committee D27 onElectrical Insulating Liquids and Gasesand is the direct responsibility of Subcom-mittee D27.01 on Mineral.Current edition approved Dec.1,2009.Published December 2009.Originallyapproved in 1976.Last previous edition approved in 2008 as D3487 08.DOI:10.1520/D3487-09.2Refer to American National Standard C 57.106.Guide for Acceptance andMaintenance of Insulating Oil in Equipment(IEEE Standard 64).Available fromAmerican National Standards Institute(ANSI),25 W.43rd St.,4th Floor,NewYork,NY 10036,http:/www.ansi.org.3For 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 D4768 Test Method for Analysis of 2,6-Ditertiary-ButylPara-Cresol and 2,6-Ditertiary-Butyl Phenol in InsulatingLiquids by Gas ChromatographyD5837 Test Method for Furanic Compounds in ElectricalInsulating Liquids by High-Performance Liquid Chroma-tography(HPLC)3.Terminology3.1 Type I Mineral Oilan oil for apparatus where normaloxidation resistance is required.Some oils may require theaddition of a suitable