1、Designation: D2220 17Standard Specification forPoly(Vinyl Chloride) Insulation for Wire and Cable, 75COperation1This 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
2、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 specification covers a thermoplastic insulation ofpoly(vinyl chloride) or the copolymer of vinyl chloride andvin
3、yl acetate.1.2 This insulation is recommended for use in power andcontrol circuits at temperatures not higher than 75C. 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 or
4、wet applications, 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
5、material and not to 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 (includi
6、ng the title), temperatures aredescribed in degrees Celsius only.2. Referenced Documents2.1 ASTM Standards:2D1711 Terminology Relating to Electrical InsulationD2633 Test Methods for Thermoplastic Insulations andJackets for Wire and CableD2633 Test Methods for Thermoplastic Insulations andJackets for
7、 Wire and CableG153 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 specification, refer
8、to Terminology D1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 aging (act of), nexposure of materials to air or oil ata temperature and a time as specified in Table 1.4. Physical Properties4.1 The insulation shall conform to the requirements forphysical properties prescribed in Table
9、1.5. 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 TestTest the insulated conductor at the acwithstand voltage as specified in Table 2. Un
10、less 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 verticalrisers, it is possible that the minimum conductor sizes in Table2 are not stron
11、g 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 metallic sheath or protective coveringover the assembly, except as shown in 5.2.2.1
12、.5.2.2.1 For single-conductor cables for installation in under-ground ducts or direct earth burial, add 15 mils (0.38 mm) tothe insulation thicknesses given in Table 2 when such cables donot have a thermoplastic jacket or metallic sheath over theassembly.5.2.3 Where the thickness of the insulation i
13、s increased formechanical reasons or for special service conditions, determinethe test voltage in Table 2 by the size of the conductor and therated voltage.5.3 Insulation Resistance:1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials a
14、nd is the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved March 1, 2017. Published March 2017. Originallyapproved in 1963. Last previous edition approved in 2011 as D2220 11. DOI:10.1520/D2220-17.2For referenced ASTM standards, visit the ASTM w
15、ebsite, 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 Barr Harbo
16、r 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 Recommendatio
17、ns issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15.3.1 Insulated conductors in sizes AWG 14 (2.08 mm2) andlarger shall have an insulation resistance of at least thatcorresponding to a constant of 2000 M -1000 ft at 60F(15.6C).5.3.2 If the temperature at the time
18、 measurement was madediffers from 60F (15.6C), correct the insulation resistance to60F by multiplying the measured value by the proper correc-tion factor from Table 1, Temperature Correction Factors forInsulation Resistance at 60F, of Methods D2633.5.4 DC Voltage TestUpon completion of the insulatio
19、nresistance test, test each non-shielded insulated conductor for5 min at a dc withstand voltage which is three times the ac testvoltage specified in Table 2. Unless otherwise specified, omitthis test if the ac withstand voltage test described in 5.2 isperformed.5.5 Accelerated Water AbsorptionThe in
20、sulation shallmeet the requirements in Table 3.5.6 Dielectric Strength Retention The insulation shall becapable of meeting a dielectric strength retention of at least60 % of the original dielectric strength when tested at atemperature of 75 6 1C.6. Thickness of Insulation6.1 The average thickness of
21、 the insulation shall be at leastthat prescribed in Table 2. The minimum thickness shall be atleast 90 % of the thickness prescribed in Table 2.7. Workmanship, Finish, and Appearance7.1 Apply the insulation directly to the surface of theconductor or conductor covering and obtain a tight fit to thats
22、urface.7.2 Repairs and JointsWhen making repairs or joints inthe insulation, do the work in such a manner that the repairedpart of the joint, and all parts affected by the process, meet thesame electrical tests as the remainder of the insulation andmaintain the limitations on the thickness specified
23、 in Section 6.8. Sampling8.1 Sample the insulation in accordance with MethodsD2633.9. Test Methods9.1 Test the insulation in accordance with Methods D2633.10. Keywords10.1 accelerated water absorption; ac voltage test; dc volt-age test; insulation resistance; poly (vinyl chloride) insulation;75C Pol
24、y (Vinyl Chloride) Insulation; thicknessTABLE 1 Physical Properties RequirementsUnaged Requirements:Tensile strength, min, psi (MPa) 2000 (13.8)Elongation at rupture, min, % 150Aged Requirements:After air oven test at 121 1C for 168 h:Tubular Specimensup to size AWG 6 (13.3 mm2)Tensile strength, min
25、, % of unaged value 80Elongation, min, % of unaged value 75Buffed die-cut Specimenssizes AWG 6 and largerTensile strength, min, % of unaged value 75Elongation, min, % of unaged value 50Heat shock, 121 1C no cracksHeat distortion, 121 1C, max, % decrease 25Vertical flame test, after passesfive 15-s a
26、pplicationsOil resistance test:After oil immersion at 70 1C for 4 h:Tubular Specimensup to size AWG 6 (13.3 mm2)Tensile strength, min, % of unaged value 85Elongation, min, % of unaged value 85Buffed die-cut Specimenssizes AWG 6 and largerTensile strength, min, % of unaged value 80Elongation, min, %
27、of unaged value 60Cold bend test, -30 1C for 1 h no cracksTABLE 2 Conductor Sizes, Insulation Thicknesses, and TestVoltages for Poly(Vinyl Chloride)-Insulated Control and PowerCablesRated CircuitVoltage,Phase-to-Phase, VConductor Size,AWG or cmil (mm2)InsulationThickness, mils(mm)AC TestVoltage,kV0
28、to 300 26 to 16 (0.13 to 1.31) 15 (0.38) 1.00 to 600 26 to 16 (0.13 to 1.31) 30 (0.76) 1.514 to 9 (2.08 to 6.63) 45 (1.14) 3.08 to 2 (8.37 to 33.6) 60 (1.52) 3.51 to 0000 (42.4 to 10.7) 80 (2.03) 4.0225 000 to 500 000 (140 to 253) 95 (2.41) 5.0501 000 to 1 000 000 (254 to 507) 110 (2.79) 6.0Over 1 0
29、00 000 (507) 125 (3.18) 7.0TABLE 3 Accelerated Water Absorption RequirementsElectrical method 60 Hz at 75 1C:Permittivity after 24 h, max 10.0Increase in capacitance, max, %:1 to 14 days 4.07 to 14 days 2.0D2220 172APPENDIXX1. Optional Weatherometer Test(Nonmandatory Information)X1.1 The optional we
30、ather resistance shall be in accordancewith Practice G153, using cycle 1 for Carbon Arc testing, or inaccordance withASTM Practice G155 using cycle 1 for Xenonarc testing.X1.2 Sample the insulation in accordance with Test Meth-ods D2633.X1.3 The insulation shall conform to the requirements forphysic
31、al properties prescribed in Table X1.1, below.SUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this standard since the last issue(D2220 11) that may impact the use of this standard. (Approved March 1, 2017.)(1) Added Practices G153and G155 to Referenced Documents(Se
32、ction 2).(2) Added Appendix X1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof i
33、nfringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this sta
34、ndard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your
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36、cting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978)
37、 646-2600; http:/ X1.1 Weatherometer Physical Properties RequirementsWeather Resistance Test (Optional)After 720 H in Either Xenon or Carbon Arc ExposureTubular Specimensup to size AWG 6 (13.3 mm2)Tensile strength, min, % of unaged value 80Elongation, min, % of unaged value 80Buffed die-cut Specimenssizes AWG 6 and largerTensile strength, min, % of unaged value 80Elongation, min, % of unaged value 80D2220 173
