1、Designation:D835421Standard Test Method forFlammability of Electrical Insulating Materials Intended forWires or Cables When Burning in a Vertical Configuration1This standard is issued under the fixed designation D8354;the number immediately following the designation indicates the year oforiginal ado
2、ption 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.NOTEThe title of this test method was corrected editorially and the yeardate was changed
3、on March 31,2021.1.Scope1.1 This is a fire-test-response standard.1.2 This fire test method is applicable to electrical insulationmaterials used for wires or cables.The materials are tested asplastic specimens on their own or installed on the wires orcables.1.3 The ignition source is a gas burner fu
4、eled by methane ornatural gas.1.4 Use the values stated in SI units in referee decisions;seeIEEE/ASTM SI-10.The values given in parentheses after SIunits are provided for information only and are not consideredstandard.1.5 This standard is used to measure and describe theresponse of materials,produc
5、ts,or assemblies to heat andflame under controlled conditions,but does not by itselfincorporate all factors required for fire hazard or fire riskassessment of the materials,products,or assemblies underactual fire conditions.1.6 Fire testing is inherently hazardous.Adequate safe-guards for personnel
6、and property shall be employed inconducting these tests.1.7 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,health,and environmental practices and deter-mine the a
7、pplicability of regulatory limitations prior to use.1.8 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 b
8、y the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1711 Terminology Relating to Electrical InsulationD2219 Specification for Poly(Vinyl Chloride)Insulation forWire and Cable,60 C OperationD2220 Specification for Poly(Vinyl Chloride)Insu
9、lation forWire and Cable,75 C OperationD2633 Test Methods for Thermoplastic Insulations andJackets for Wire and CableD3032 Test Methods for Hookup Wire InsulationD5025 Specification for Laboratory Burner Used for Small-Scale Burning Tests on Plastic MaterialsD5207 Practice for Confirmation of 20-mm(
10、50-W)and125-mm(500-W)Test Flames for Small-Scale BurningTests on Plastic MaterialsE176 Terminology of Fire Standards2.2 ISO Standard:3ISO 13943 Fire Safety Vocabulary2.3 Federal Standard:4PPP-T-45D Federal Specification for Tape;Paper,Gummed(Kraft)3.Terminology3.1 Definitions:3.1.1 For definitions o
11、f terms relating to electrical andelectronic insulating materials,the definitions in this testmethod are in accordance with Terminology D1711.For termsrelating to fire,the definitions in this test method are inaccordance with Terminology E176 and ISO 13943.In case ofconflict,the definitions given in
12、 Terminology E176 shallprevail.1This test method is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.17 on Fire and Thermal Properties.Current edition approved March 31,2021.Published April 2021.Last pre
13、viousedition approved in 2020 as D8354 20.DOI:10.1520/D8354-21.2For 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.3Av
14、ailable from International Organization for Standardization(ISO),ISOCentral Secretariat,BIBC II,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:/www.iso.org.4Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.
15、Copyright 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 Internatio
16、nal Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.14.Summary of Test Method4.1 In this test method,a test specimen of an electricalinsulating material or a wire or cable test specimen is mountedvertically and ignited with a small burner,applying a 500 Wflame,with five consecutive exposures of 15 s each.4.2 The burner gas is methane or natural gas(see 6.5).4.3 A kraft paper flame indicator flag is attached to the testspecimen