ASTM_D_6194_-_14.pdf

Designation:D619414Standard Test Method forGlow-Wire Ignition of Materials1This standard is issued under the fixed designation D6194;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 This test method covers the minimum temperaturerequired to ignite insulating materials using a glowing heatsource.In a preliminary fashion,this test method differentiatesbetween the susceptibilities of different materials with respectto their resistance to ignition due to an electrically-heatedsource.1.2 This test method applies to molded or sheet materialsavailable in thicknesses ranging from 0.25 to 6.4 mm.1.3 This test method is not valid for determining the ignitionbehavior of complete electrotechnical equipment,since thedesign of the electrotechnical product influences the heattransfer between adjacent parts.1.4 This test method measures and describes the response ormaterials,products,or assemblies to heat and flame undercontrolled conditions,but does not by itself incorporate allfactors required for fire hazard or fire risk assessment of thematerials,products,or assemblies under actual fire conditions.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.(See IEEE/ASTM SI-10 for further details.)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 specificprecautionary statements,see Section 9.1.7 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.NOTE1Although this test method and IEC 60695-2-13 differ inapproach and in detail,data obtained using either are technically equiva-lent.2.Referenced Documents2.1 ASTM Standards:2D1711 Terminology Relating to Electrical InsulationE176 Terminology of Fire StandardsE220 Test Method for Calibration of Thermocouples ByComparison TechniquesE230 Specification and Temperature-Electromotive Force(EMF)Tables for Standardized ThermocouplesIEEE/ASTM SI-10 International System of Units(SI),TheModernized Metric System2.2 IEC Standard:IEC 60695-4 Fire Hazard TestingPart 4:TerminologyConcerning Fire Tests3IEC 60695-2-12 Fire Hazard TestingPart 212:Glowing/Hot-Wire Based Test MethodsGlow-Wire FlammabilityTest Method for Materials3IEC 60695-2-13 Fire Hazard TestingSection 20:Glowing/Hot-Wire Based Test MethodsGlow-Wire Coil Ignit-ability Test Method for Materials32.3 ISO Standard:4ISO 13943 Fire SafetyVocabulary3.Terminology3.1 DefinitionsUse Terminology E176,ISO 13943,andIEC 60695-4 for definitions of terms used in this test methodand associated with fire issues.Where differences exist indefinitions,those contained in Terminology E176 shall be used.Use Terminology D1711 for definitions of terms used in thistest method and associated with electrical insulation materials.3.2 Definitions of Terms Specific to This Standard:3.2.1 glow-wire,na wire of specified dimensions that canbe controllably heated electrically to determine ignitability of amaterial.3.2.1.1 DiscussionFig.1 shows a glow-wire and its posi-tioning.1This test method is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.21 on Fire Performance Standards.Current edition approved Nov.1,2014.Published November 2014.Originallyapproved in 1997.Last previous edition approved in 2010 as D6194 10.DOI:10.1520/D6194-14.2For 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.3Available from International Electrotechnical Commission(IEC),3 Rue deVaremb,Case postale 131,CH-1211,Geneva 20,Switzerland,http:/www.iec.ch.4Use undyed,soft,strong,lightweight tissue paper weighing between 12 and30 g m2.*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 States1 3.2.2 glow-wire flammability index(GWFI),nthe highesttest temperature,during three subsequent tests for a testspecimen of a given thickness,at which one of the followingconditions are fulfilled:a)flames or glowing of the testspecimen extinguish within 30 s after removal of the glow-wireand there is no ignition of the wrapping tissue placed under-neath the test specimen;b)there is no ignition of the testspecimen.3.2.3 glow-wire ignition temperature(GWIT),nthe tem-perature which is 25C(30C between 9