1、Designation:D542418Standard Test Method forSmoke Obscuration of Insulating Materials Contained inElectrical or Optical Fiber Cables When Burning in a VerticalCable Tray Configuration1This standard is issued under the fixed designation D5424;the number immediately following the designation indicates
2、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 is a fire-test-response standard.1.2 This test me
3、thod provides a means to measure thesmoke obscuration resulting from burning electrical insulatingmaterials contained in electrical or optical fiber cables whenthe cable specimens,excluding accessories,are subjected to aspecified flaming ignition source and burn freely under wellventilated condition
4、s.1.3 This test method provides two different protocols forexposing the materials,when made into cable specimens,to anignition source(approximately 20 kW),for a 20 min testduration.Use it to determine the flame propagation and smokerelease characteristics of the materials contained in single andmult
5、iconductor electrical or optical fiber cables designed foruse in cable trays.1.4 This test method does not provide information on thefire performance of electrical or optical fiber cables in fireconditions other than the ones specifically used in this testmethod,nor does it measure the contribution
6、of the cables to adeveloping fire condition.1.5 Data describing the burning behavior from ignition tothe end of the test are obtained.1.6 The production of light obscuring smoke is measured.1.7 The burning behavior is documented visually,by pho-tographic or video recordings,or both.1.8 The test equi
7、pment is suitable for making other,optional,measurements,including the rate of heat release ofthe burning specimen,by an oxygen consumption techniqueand weight loss.1.9 Another set of optional measurements are the concen-trations of certain toxic gas species in the combustion gases.1.10 The values s
8、tated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.(See IEEE/ASTM SI 10.)1.11 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 a
9、ppro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.12 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.13 This standard is used to measure and
10、 describe theresponse of materials,products,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.1.14 This international standard wa
11、s 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 D
12、ocuments2.1 ASTM Standards:2D1711 Terminology Relating to Electrical InsulationD5537 Test Method for Heat Release,Flame Spread,SmokeObscuration,and Mass Loss Testing of Insulating Mate-rials Contained in Electrical or Optical Fiber Cables WhenBurning in a Vertical Cable Tray ConfigurationE84 Test Me
13、thod for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsE800 Guide for Measurement of Gases Present or GeneratedDuring Fires1This test method is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct resp
14、onsibility ofSubcommittee D09.17 on Fire and Thermal Properties.Current edition approved Nov.1,2018.Published December 2018.Originallyapproved in 1993.Last previous edition approved in 2014 as D5424 14.DOI:10.1520/D5424-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
15、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 Conshohock
16、en,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 E1354 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using an Oxygen Con-sumption CalorimeterIEEE/ASTM SI 10 Standard for
