ASTM_D_709_-_17.pdf

Designation:D70917Standard Specification forLaminated Thermosetting Materials1This standard is issued under the fixed designation D709;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 U.S.Department of Defense.1.Scope*1.1 This specification covers laminated thermosetting mate-rials consisting of two or more plies or layers of reinforcingmaterial bonded by a thermosetting synthetic resin.Examplesof such reinforcement are cellulose paper,cotton fabric,glassfabric,and synthetic fiber fabrics.These materials are availablein the form of sheets,rolled and molded tubes,and moldedrods.1.2 The values stated in inch-pound units are to be regardedas the standard.NOTE1This specification resembles IEC 60893-3 in title only.Thecontent is significantly different.1.3 The following safety hazards caveat pertains only to thetest methods described in this specification.This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D229 Test Methods for Rigid Sheet and Plate MaterialsUsed for Electrical InsulationD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD348 Test Methods for Rigid Tubes Used for ElectricalInsulationD349 Test Methods for Laminated Round Rods Used forElectrical InsulationD495 Test Method for High-Voltage,Low-Current,Dry ArcResistance of Solid Electrical InsulationD621 Test Methods for Deformation of Plastics Under Load(Withdrawn 1994)3D668 Test Methods of Measuring Dimensions of Rigid Rodsand Tubes Used for Electrical InsulationD883 Terminology Relating to PlasticsD1180 Method of Test for Warpage of Sheet Plastics(With-drawn 1988)3D1711 Terminology Relating to Electrical InsulationD2303 Test Methods for Liquid-Contaminant,Inclined-Plane Tracking and Erosion of Insulating MaterialsD2304 Test Method for Thermal Endurance of Rigid Elec-trical Insulating MaterialsD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsD6054 Practice for Conditioning Electrical Insulating Mate-rials for Testing(Withdrawn 2012)32.2 IEEE Standards:41 General Principles for Temperature Limits in the Rating ofElectric Equipment98 Guide for the Preparation of Test Procedures for theThermal Evaluation and Establishment of TemperatureIndices of Solid Electrical Insulating Materials99 Guide for the Preparation of Test Procedures for theThermal Evaluation of Insulation Systems for ElectricEquipment101 Guide for the Statistical Analysis of Thermal Life TestData2.3 NEMA Standards:5LI 1-1971 Industrial Laminated Thermosetting ProductsLI 5-1969 Temperature Indices of Industrial ThermosettingLaminates1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1943.Last previous edition approved in 2013 as D709 16.DOI:10.1520/D0709-17.2For 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.4Available from Institute of Electrical and Electronics Engineers,Inc.(IEEE),445 Hoes Ln.,P.O.Box 1331,Piscataway,NJ 08854-1331,http:/www.ieee.org.5Available from National Electrical Manufacturers Association(NEMA),1300N.17th St.,Suite 1752,Rosslyn,VA 22209,http:/www.nema.org.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 LI 3-1961 High-Temperature Properties of Industrial Ther-mosetting Laminates2.4 Military Specifications:6MIL