1、Designation:E172514An American National StandardStandard Test Methods forFire Tests of Fire-Resistive Barrier Systems for ElectricalSystem Components1This standard is issued under the fixed designation E1725;the number immediately following the designation indicates the year oforiginal adoption or,i
2、n 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 These test methods cover fire-test-response.1.2 These fire-test-response test methods p
3、rovide informa-tion on the temperatures recorded on the electrical systemcomponent within a fire-resistive barrier system during theperiod of exposure.1.3 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat andflame under controlled conditions,but do
4、es not by itselfincorporate all factors required for fire hazard or fire riskassessment of the materials,products,or assemblies underactual fire conditions.1.4 Potentially important factors and fire characteristics notaddressed by these test methods include,but are not limited to:1.4.1 The performan
5、ce of the fire-resistive barrier systemconstructed with components other than those tested.1.4.2 An evaluation of the functionality of the electricalsystem within the fire-resistive barrier system.1.4.3 An evaluation of the ampacity of the electrical systemwithin the fire-resistive barrier system.1.
6、4.4 An evaluation of the smoke,toxic gases,corrosivity,or other products of heating.1.4.5 A measurement of the flame spread characteristicsover the surface of the fire-resistive barrier system.1.4.6 An evaluation of through-penetration sealing methods.1.4.7 Combustibility of materials in the fire-re
7、sistive barriersystem or of the electrical system components.1.4.8 The need for supports beyond those normally re-quired.1.4.9 Environmental conditions in the area of service.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconve
8、rsions 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 establish appro-priate safety and health practices a
9、nd determine the applica-bility of regulatory limitations prior to use.1.7 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.2.Referenced Documents2.1 ASTM Standards:2E119 Test Methods for Fire Tests of Building Constructi
10、onand MaterialsE1529 Test Methods for Determining Effects of Large Hy-drocarbon Pool Fires on Structural Members and Assem-blies3.Terminology3.1 Definitions:3.1.1 air droplengths of open run conductors or cablessupported only at each end.3.1.2 electrical system componentscable trays,conduitsand othe
11、r raceways,open run cables and conductors,cables,conductors,cabinets,and other components,as defined or usedin the National Electrical Code,and air drops as defined in3.1.1.3.1.3 fire-resistive barrier systema specific construction ofdevices,materials,or coatings installed around,or applied to,the e
12、lectrical system components.3.1.4 specimena construction consisting of electrical sys-tem components and a fire-resistive barrier system.3.1.5 test assemblyhorizontal or vertical construction onwhich test specimens are to be mounted together with associ-ated instrumentation.1These test methods are u
13、nder the jurisdiction of ASTM Committee E05 on FireStandards and are the direct responsibility of Subcommittee E05.11 on FireResistance.Current edition approved July 1,2014.Published August 2014.Originallyapproved in 1995.Last previous edition approved in 2008 as E172508.DOI:10.1520/E1725-14.2For re
14、ferenced 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.*A Summary of Changes section appears at the end of this standardCopyrigh
15、t ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 These fire-test-response test methods evaluate,under thespecified test conditions,the ability of a fire-resistive barriersystem to inhibit thermal transmission to the elect
16、rical systemcomponent within.4.2 In these procedures,the specimens are subjected to oneor more specific sets of laboratory test conditions.If differenttest conditions are substituted or the end-use conditions arechanged,it is not always possible by or from these test methodsto predict changes in the fire test response characteristicsmeasured.Therefore,the results are valid only for the fire testexposure conditions described in these procedures.4.3 These test methods provide a measurement of thet
