1、Designation:D87621Standard Test Methods forNonrigid Vinyl Chloride Polymer Tubing Used for ElectricalInsulation1This standard is issued under the fixed designation D876;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 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 These test methods cover the testing of g
3、eneral-purpose(Grade A),low-temperature(Grade B),and high-temperature(Grade C)2nonrigid vinyl chloride polymer tubing,or itscopolymers with other materials,for use as electrical insula-tion.For the purpose of these test methods nonrigid tubingshall be tubing having an initial elongation in excess of
4、 100%at break.NOTE1These test methods are similar but not identical to those inIEC 606842.1.2 The values stated in inch-pound units are to be regardedas standard,except for temperature,which shall be expressedin degrees Celsius.The values given in parentheses aremathematical conversions to SI units
5、that are provided forinformation only and are not considered standard.1.3 The procedures appear in the following sections:ProcedureSectionASTM ReferenceStandardBrittleness Temperature37 39D746Corrosion Tests68 79D1000Dielectric Breakdown Voltage at High Humidity59 67E104Dielectric Breakdown Voltage5
6、2 58D149Dimensional Tests8 14D374Effect of Elevated Temperatures19 30D412Flammability TestD8355,Test Method AOil Resistance Test29 36D471Penetration Test40 45Sampling6Strain Relief Test62 67Tension Test16 18D412Test Conditions7Volume Resistivity46 51D2571.4 This standard does not purport to address
7、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 applicability of regulatory limitations prior to use.For specific hazard statements,see Section 5.1.5 F
8、or fire test caveats,see Test Methods D8355.1.6 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 Wo
9、rld Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD257 Test Methods for DC Resistance or Conductance
10、 ofInsulating MaterialsD374 Test Methods for Thickness of Solid Electrical Insu-lation(Metric)D0374_D0374MD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD746 Test Method for Brittleness Temperature of Plasticsand Elast
11、omers by ImpactD1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applica-tionsD1711 Terminology Relating to Electrical InsulationD5032 Practice for Maintaining Constant Relative Humidityby Means of Aqueous Glycerin SolutionsD8355 Test Methods for Flam
12、mability of Electrical Insulat-ing Materials Used for Sleeving or TubingE104 Practice for Maintaining Constant Relative Humidityby Means of Aqueous SolutionsE176 Terminology of Fire Standards1These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating M
13、aterials and are the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved Jan.1,2021.Published February 2021.Originallyapproved in 1946.Last previous edition approved in 2013 as D876 13.DOI:10.1520/D0876-21.2Test methods applicable to Grade B will b
14、e specified at a later date.3For 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.*A Summary of Changes section appears
15、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 t
16、heDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.12.2IEC Standards:4606842 Flexible insulating sleeving,Part 2,Methods oftest3.Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation,referto Terminology D1711.3.1.2 For definitions pertaining to fire standards,refer toTerminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 brittleness temperature,nthat
