1、Designation: D2220 11An American National StandardStandard 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 c
2、ase 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 This specification covers a thermoplastic insulation ofpoly(vinyl chloride) or the copol
3、ymer of vinyl chloride andvinyl 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 applicati
4、on range is widened to dry orwet 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 releva
5、nt property of theinsulation 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
6、.1.4.1 In come cases (including 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 Cable3. Terminology3.1 Definitions:3.1.
7、1 For definitions of terms used in this specification, referto Terminology D1711.3.2 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 th
8、e requirements forphysical properties 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 conduc
9、tor 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 verticalrisers, it is possibl
10、e 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 and1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Ma
11、terials and is the direct responsibility ofSubcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings and Coveringsfor Electrical and Telecommunication Wires and Cables.Current edition approved Aug. 1, 2011. Published August 2011. Originallyapproved in 1963. Last previous edition approved in
12、2007 as D2220 02(2007)e1.DOI: 10.1520/D2220-11.2For 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.TABLE 1 Physic
13、al Properties RequirementsUnaged Requirements:Tensile strength, min, psi (MPa) 2000 (13.8)Elongation at rupture, min, % 150Aged Requirements:After air oven test at 1216 1C for 168 h:Tubular Specimensup to size AWG 6 (13.3 mm2)Tensile strength, min, % of unaged value 80Elongation, min, % of unaged va
14、lue 75Buffed die-cut Specimenssizes AWG 6 and largerTensile strength, min, % of unaged value 75Elongation, min, % of unaged value 50Heat shock, 121 6 1C no cracksHeat distortion, 121 6 1C, max, % decrease 25Vertical flame test, after passesfive 15-s applicationsOil resistance test:After oil immersio
15、n at 706 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, % of unaged value 60Cold bend test, 30 6 1C for 1
16、h no cracks1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.to the individual conductors of all multiple-conductor cableshaving a common jacket metallic sheath or prote
17、ctive 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) tothe insulation thicknesses given in Table 2 when such cables donot have a thermoplastic jacket or metallic sheath ove
18、r theassembly.5.2.3 Where the thickness of the insulation is 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:5.3.1 Insulated conductors in sizesAWG 14 (2.08 mm2) andlar
19、ger shall have an insulation resistance of at least thatcorresponding to a constant of 2000 M V-1000 ft at 60F(15.6C).5.3.2 If the temperature at the time measurement was madediffers from 60F (15.6C), correct the insulation resistance to60F by multiplying the measured value by the proper correc-tion
20、 factor from Table 1, Temperature Correction Factors forInsulation Resistance at 60F, of Methods D2633.5.4 DC Voltage TestUpon completion of the insulationresistance test, test each non-shielded insulated conductor for 5min at a dc withstand voltage which is three times the ac testvoltage specified
21、in Table 2. Unless otherwise specified, omitthis test if the ac withstand voltage test described in 5.2 isperformed.5.5 Accelerated Water AbsorptionThe insulation shallmeet the requirements in Table 3.5.6 Dielectric Strength Retention The insulation shall becapable of meeting a dielectric strength r
22、etention 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 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.
23、 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 making repairs or joints inthe insulation, do the work in such a manner that the repairedpart of the joint, and
24、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 Sample the insulation in accordance with MethodsD2633.9. Test Methods9.1 Test the insulation in accordance with Metho
25、ds D2633.10. Keywords10.1 accelerated water absorption; ac voltage test; dc volt-age test; insulation resistance; poly (vinyl chloride)insulation;75C Poly (Vinyl Chloride) Insulation; thicknessSUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this terminology since t
26、he last issue,D1711 02R07e1, that may impact the use of this terminology. (Approved August 1, 2011)(1) Added Units statement.(2) Modified 5.2 and 5.4, added 5.2.1-5.2.3.(3) Deleted notes from Table 2.TABLE 2 Conductor Sizes, Insulation Thicknesses, and TestVoltages for Poly(Vinyl Chloride)-Insulated
27、 Control and PowerCablesRated 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)
28、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 1 000 000 (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 ca
29、pacitance, max, %:1 to 14 days 4.07 to 14 days 2.0D2220 112ASTM 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 pat
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32、hearing you shouldmake your views known to the ASTM 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 stand
33、ard may be obtained by contacting 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 ASTM website (www.astm.org/COPYRIGHT/).D2220 113
