1、Designation:D222021Standard Specification forPoly(Vinyl Chloride)Insulation for Wire and Cable,75 COperation1This standard is issued under the fixed designation D2220;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last r
2、evision.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 specification covers a thermoplastic insulation ofpoly(vinyl chloride)or the copolymer of vinyl chloride andvinyl acetate.1
3、.2 This insulation is recommended for use in power andcontrol circuits at temperatures not higher than 75 C.At athickness of 15 mils(0.38 mm),application is limited tovoltage ratings below 300 V,and to dry locations.At athickness of 30 mils,the application range is widened to dry orwet applications,
4、and to a voltage rating of 600 V.1.3 In many instances the insulation material cannot betested unless it has been formed around a conductor or cable.Therefore,tests are done on insulated wire or cable in thisspecification solely to determine the relevant property of theinsulation material and not to
5、 test the conductor or completedcable.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4.1 In come cases(including the title),tempera
6、tures aredescribed in degrees Celsius only.1.5 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 Wor
7、ld Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1711 Terminology Relating to Electrical InsulationD2633 Test Methods for Thermoplastic Insulations andJackets for Wire and CableD8354 Test Method for Flammability of Electrical Insulat-ing Mater
8、ials Used for Sleeving or TubingG153 Practice for Operating Enclosed Carbon Arc LightApparatus for Exposure of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus forExposure of Non-Metallic Materials3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this spec
9、ification,referto Terminology D1711.4.Physical Properties4.1 The insulation shall conform to the requirements forphysical properties prescribed in Table 1.In terms of thisspecification,the act of aging is the response of materials totheir exposure to air or oil at a temperature and a time asspecifie
10、d in Table 1.The vertical flame test shall be conductedin accordance with Test Method D8354.5.Electrical Requirements5.1 Perform the ac voltage,insulation resistance,and dcvoltage tests in that order when any of these tests are required.The sequence for other testing is not specified.5.2 AC Voltage
11、TestTest the insulated conductor at the acwithstand voltage as specified in Table 2.Unless otherwisespecified,omit this test if the dc withstand voltage testdescribed in 5.4 is performed.5.2.1 For cables or conditions of service where mechanicalstresses govern,such as in submarine cables or long ver
12、ticalrisers,it is possible that the minimum conductor sizes in Table2 are not strong enough.5.2.2 The thicknesses given in Table 2 apply to aerial cablesand to single conductors installed in conduits above ground andto the individual conductors of all multiple-conductor cableshaving a common jacket
13、metallic sheath or protective coveringover the assembly,except as shown in 5.2.2.1.5.2.2.1 For single-conductor cables for installation in under-ground ducts or direct earth burial,add 15 mils(0.38 mm)to1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic I
14、nsulating Materials and is the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved Jan.1,2021.Published February 2021.Originallyapproved in 1963.Last previous edition approved in 2017 as D2220 17.DOI:10.1520/D2220-21.2For referenced ASTM standards,
15、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 standardCopyright ASTM International,100
16、 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 International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1the insulation thicknesses given in Table 2 when such cables donot have a thermoplastic jacket or metallic sh
