ASTM_D_3394_-_94_2009.pdf

Designation:D339494(Reapproved 2009)Standard Test Methods forSampling and Testing Electrical Insulating Board1This standard is issued under the fixed designation D3394;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 These test methods cover the sampling and testing ofelectrical insulating boards.These boards are porous,usuallyfibrous sheets used for dielectric and structural purposes inelectrical apparatus.1.2 These test methods are not intended for testing vulca-nized fibre or molded laminated sheets.1.3 These test methods are applicable to board materialshaving a nominal thickness of at least 0.030 in.(0.76 mm).NOTE1For materials thinner than 0.030 in.(0.76 mm)see TestMethods D202.1.4 The test methods appear in the following sections:SectionsASTM MethodReferenceApparent Density18 23Aqueous Extract Characteristics36 42D202Ash Content43 46T 413Compatibility with DielectricLiquids47 52D664,D877,D924,D971,D974,D1169,D1500,D1816,D3455,D3487Compressibility79 85Conditioning11D685Degree of Polymerization86 89D4243Dielectric Strength in Air53 59D149Dielectric Strength in Oil60 65D149,D2413,D3426Dimensions of Sheets12 17Moisture Content31 35D644Oil Absorption72 78Reports10Sampling6 9D3636Shrinkage24 30D644Tensile Properties66 71D2021.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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 consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD202 Test Methods for Sampling and Testing UntreatedPaper Used for Electrical InsulationD374 Test Methods for Thickness of Solid Electrical Insu-lation(Withdrawn 2013)3D586 Test Method for Ash in Pulp,Paper,and PaperProducts(Withdrawn 2009)3D644 Test Method for Moisture Content of Paper andPaperboard by Oven Drying(Withdrawn 2010)3D664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD685 Practice for Conditioning Paper and Paper Productsfor TestingD877 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using Disk ElectrodesD924 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 TitrationD1169 Test Method for Specific Resistance(Resistivity)ofElectrical Insulating LiquidsD1500 Test Method for ASTM Color of Petroleum Products(ASTM Color Scale)D1816 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using VDE ElectrodesD2413 Practice for Preparation of Insulating Paper andBoard Impregnated with a Liquid Dielectric1These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.19 on Dielectric Sheet and Roll Products.Current edition approved Oct.1,2009.Published February 2010.Originallyapproved in 1975.Last previous edition approved in 2005 as D3394 94(2005).DOI:10.1520/D3394-94R09.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D2865 Practice for Calibration of Standards and Equipmentfor Electrical Insulating Materials TestingD3426 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating MaterialsUsing Impulse WavesD3455 Test Methods for Compatibility of Construction Ma-terial with Electrical Insulating Oil of Petroleum OriginD3487 Specification for Mineral Insulating Oil Used inElectrical ApparatusD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsD4243 Test Method for Measurement of Average Viscomet-ric Degree of Polymerization of New and Aged ElectricalPapers and BoardsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 TAPPI Standard:T 413 Determination of Ash in Paper43.Terminology