ASTM_D_176_-_07_2012.pdf

Designation:D17607(Reapproved 2012)An American National StandardStandard Test Methods forSolid Filling and Treating Compounds Used for ElectricalInsulation1This standard is issued under the fixed designation D176;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.Scope*1.1 These test methods cover physical and electrical testsfor solid filling and treating compounds used for electricalinsulation which are fusible to a liquid without significantchemical reaction.Compounds that are converted to the solidstate by polymerization,condensation,or other chemical reac-tion are not included in these test methods.1.2 These test methods are designed primarily for asphalticor bituminous compounds,waxes,and fusible resins,or mix-tures thereof,although some of these methods are applicable tosemisolid types such as petrolatums.Special methods moresuitable for hydrocarbon waxes are contained in Test MethodsD1168.1.3 Provide adequate ventilation when these tests involveheating.1.4 The test methods appear in the following sections:Test MethodSectionsElectrical Tests:A-C Loss Characteristics and Permittivity(Dielectric Constant)51-54Dielectric Strength42-45Volume Resistivity-Temperature Characteristics46-49Physical Tests:Coefficient of Expansion or Contraction22-41Flash and Fire Points9 and 10Loss on Heating11 and 12Melting Point5 and 6Penetration15 and 16Softening Point7 and 8Specific Gravity17-21Viscosity13 and 141.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 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 limitations prior to use.For specific hazardstatements,see 12.1 and 31.5.NOTE1There is no similar or equivalent IEC or ISO standard.2.Referenced Documents2.1 ASTM Standards:2D5 Test Method for Penetration of Bituminous MaterialsD6 Test Method for Loss on Heating of Oil and AsphalticCompoundsD70 Test Method for Density of Semi-Solid BituminousMaterials(Pycnometer Method)D71 Test Method for Relative Density of Solid Pitch andAsphalt(Displacement Method)D88 Test Method for Saybolt ViscosityD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD127 Test Method for Drop Melting Point of PetroleumWax,Including PetrolatumD149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD937 Test Method for Cone Penetration of PetrolatumD1168 Test Methods for Hydrocarbon Waxes Used forElectrical InsulationD1711 Terminology Relating to Electrical InsulationE28 Test Methods for Softening Point of Resins Derivedfrom Naval Stores by Ring-and-Ball ApparatusE102 Test Method for Saybolt Furol Viscosity of BituminousMaterials at High Temperatures3.Terminology3.1 Definitions:1These methods of testing are under the jurisdiction of ASTM Committee D09on Electrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.01 on Electrical Insulating Varnishes,Powders and Encapsulat-ing Compounds.Current edition approved April 1,2012.Published April 2012.Originallyapproved in 1923.Last previous edition approved in 2007 as D176 07.DOI:10.1520/D0176-07R12.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesNOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information13.1.1 dielectric strength,nthe voltage gradient at whichdielectric failure of the insulating material occurs under spe-cific conditions of test.3.1.2 For definitions of other terms relating to electricalinsulation see Terminology D1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 loss on heating,nof filling or treating compound,thechange in weight of a compound when heated under prescribedconditions at a standard temperature for a specified time.3.2.2 melting point,nof filling or treating compound,thetemperature at which the compound becomes sufficiently fluidto drop from the thermometer used in making t