1、Designation: D 2220 02 (Reapproved 2007)e1An American National StandardStandard Specification forPoly(Vinyl Chloride) Insulation for Wire and Cable, 75 COperation1This standard is issued under the fixed designation D 2220; the number immediately following the designation indicates the year oforigina
2、l adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEThe text of 5.2, 5.4, and Note 1 of Table 2 was revised editorially Oct
3、ober 2007.1. Scope1.1 This specification covers a thermoplastic insulation ofpoly(vinyl chloride) or the copolymer of vinyl chloride andvinyl acetate.1.2 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), appl
4、ication 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, and to a voltage rating of 600 V.1.3 Whenever two sets of values are presented, in differentunits, the values in the first set are the standar
5、d, while those inparentheses are for information only.1.4 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 theinsulati
6、on material and not to test the conductor or completedcable.2. Referenced Documents2.1 ASTM Standards:2D 1711 Terminology Relating to Electrical InsulationD 2633 Test Methods for Thermoplastic Insulations andJackets for Wire and Cable3. Terminology3.1 Definitions:3.1.1 For definitions of terms used
7、in this specification, referto Terminology D 1711.3.2 Definition of Term 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 prop
8、erties prescribed in Table 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
9、as specified in Table 2. It is acceptable toomit this test if the dc withstand voltage test described in 5.4 isperformed.5.3 Insulation Resistance:5.3.1 Insulated conductors in sizesAWG 14 (2.08 mm2) andlarger shall have an insulation resistance of at least thatcorresponding to a constant of 2000 M
10、V-1000 ft at 60 F (15.6C).1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings and Coveringsfor Electrical and Telecommunication Wires
11、and Cables.Current edition approved Oct. 1, 2007. Published October 2007. Originallyapproved in 1963. Last previous edition approved in 2002 as D 2220 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMS
12、tandards volume information, refer to the standards Document Summary page onthe ASTM website.TABLE 1 Physical Properties RequirementsUnaged Requirements:Tensile strength, min, psi (MPa) 2000 (13.8)Elongation at rupture, min, % 150Aged Requirements:After air oven test at 1216 1 C for 168 h:Tubular Sp
13、ecimensup to size AWG 6 (13.3 mm2)Tensile strength, min, % 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 6 1 C no cracksHeat distortion, 121 6 1 C, m
14、ax, % decrease 25Vertical flame test, after passesfive 15-s applicationsOil resistance test:After oil immersion at 706 1Cfor4h: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 largerTen
15、sile strength, min, % of unaged value 80Elongation, min, % of unaged value 60Cold bend test, 30 6 1 C for 1 h no cracks1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.3.2 If the temperature at the time measurement was madediffers f
16、rom 60 F (15.6 C), correct the insulation resistance to60 F by multiplying the measured value by the propercorrection factor from Table 1, Temperature Correction Factorsfor Insulation Resistance at 60 F, of Methods D 2633.5.4 DC Voltage TestUpon completion of the insulationresistance test, test each
17、 non-shielded insulated conductor for 5min at a dc withstand voltage which is three times the ac testvoltage specified in Table 2. It is acceptable to omit this test ifthe ac withstand voltage test described in 5.2 is performed.5.5 Accelerated Water AbsorptionThe insulation shallmeet the requirement
18、s 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 1 C.6. Thickness of Insulation6.1 The average thickness of the insulation shall be at least
19、that 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 thatsurface.7.2 Repairs and JointsWhen
20、 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 in Section 6.8. Sampling8.1 Samp
21、le the insulation in accordance with MethodsD 2633.9. Test Methods9.1 Test the insulation in accordance with Methods D 2633.10. Keywords10.1 accelerated water absorption; ac voltage test; dc volt-age test; insulation resistance; poly (vinyl chloride) insulation;75 C Poly (Vinyl Chloride) Insulation;
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23、ights, 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 standard or for addition
24、al 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 views known to the AS
25、TM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the abo
26、veaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 2 Conductor Sizes, Insulation Thicknesses, and TestVoltages for Poly(Vinyl Chloride)-Insulated Control and PowerCablesNOTE 1For cables or conditions of service where
27、 mechanical stressesgovern, such as in submarine cables or long vertical risers, these minimumconductor sizes are potentially not strong enough.NOTE 2The thicknesses given in Table 2 apply to aerial cables and tosingle conductors installed in conduits above ground and to the individualconductors of
28、all multiple-conductor cables having a common jacket,metallic sheath, or protective covering over the assembly, with thefollowing exceptions: For single-conductor cables for installation inunderground ducts or direct earth burial, and for all submarine cables, add15 mils (0.38 mm) to the insulation
29、thicknesses given in Table 2, whensuch cables do not have a thermoplastic jacket or metallic sheath over theassembly.NOTE 3Where the thickness of the insulation is increased for me-chanical reasons or for special service conditions, determine the testvoltage by the size of the conductor and the rate
30、d voltage.Rated CircuitVoltage,Phase-to-Phase, VConductor Size,AWG or cmil (mm2)InsulationThickness, mils(mm)AC TestVoltage,kV0 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 (
31、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 1 000 000 (507) 125 (3.18) 7.0TABLE 3 Accelerated Water Absorption RequirementsElectrical method 60 Hz at 75 6 1C:Permittivity after 24 h, max 10.0Increase in capacitance, max, %:1 to 14 days 4.07 to 14 days 2.0D 2220 02 (2007)e12
