1、Designation: D 1351 08An American National StandardStandard Specification forThermoplastic Polyethylene Insulation for Electrical Wireand Cable1This standard is issued under the fixed designation D 1351; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he 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.1. Scope*1.1 This specification covers a thermoplastic insulationwhich consists substantially of
3、 polyethylene.1.2 This type of insulation is considered suitable for use onwire or cable that will be used for continuous operation atconductor temperatures up to 75 C with a maximum conduc-tor size of 1000 kcmil (507 mm2). The maximum voltage ratingshall not exceed 35 000 V for power application or
4、 9 000 V forseries lighting.1.3 In many instances the insulation material cannot betested unless it has been formed around a conductor. Therefore,tests done on insulated wire or cable in this specification aresolely to determine the relevant property of the insulationmaterial and not to test the ins
5、ulated conductor or completedcable.1.4 Whenever two sets of values are presented, in differentunits, the values in the first set are the standard, while those inparentheses are for information only.2. Referenced Documents2.1 ASTM Standards:2D 1248 Specification for Polyethylene Plastics ExtrusionMat
6、erials for Wire and CableD 1711 Terminology Relating to Electrical InsulationD 2308 Specification for Thermoplastic PolyethyleneJacket for Electrical Wire and CableD 2633 Test Methods for Thermoplastic Insulations andJackets for Wire and CableD 3349 Test Method for Absorption Coefficient of Ethylene
7、Polymer Material Pigmented with Carbon Black2.2 ICEA Standard:T-24-380 Guide for Partial-Discharge Procedure33. Terminology3.1 Definitions:3.1.1 Refer to Terminology D 1711 for definitions of termsused in this specification.3.2 Definition of Term Specific to This Standard:3.2.1 aging (act of), nexpo
8、sure of materials to air at atemperature of 100 C for 48 h.4. Conductor Shields4.1 Conductor shields shall be used on solid and strandedconductors of power cables having rated circuit voltages above2000 V. This requirement does not apply to series lightingcables. Conductor shielding is conducting ma
9、terial at least0.0025 in. (0.06 mm) thick applied over the surface of theconductor. The options include conducting nonmetallic tape,conducting compound, or conducting cement.5. Physical Properties5.1 The polyethylene, before application to the conductor,shall comply with the requirements of Specific
10、ation D 1248 forType I; Class A, B or C; Category 4 or 5; Grade E4 or E5. Therequirements of Specification D 1248 do not apply to insula-tion removed from the conductor.5.2 Insulation exposed to sunlight or weather requiresSpecification D 1248, Class C compound or suitable protectivecoverings. Class
11、 C compound shall meet the minimum absorp-tion coefficient requirement in Table 1.5.3 Specimens removed from the wire or cable and tested at20 to 30 C (68 to 80 F) shall conform to the requirements forphysical properties specified in Table 1. Alternatively, theinsulation shall be air-oven aged witho
12、ut removal from theconductor.5.4 Thickness of InsulationThe minimum average insula-tion thickness shall be as specified in Table 2 or Table 3 of thisspecification. The minimum thickness shall be at least 90 % ofthe specified minimum average thickness.1This specification is under the jurisdiction of
13、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 and Cables.Current edition approved Jan. 1, 2008. Published February 2008.
14、Originallyapproved in 1954. Last previous edition approved in 2002 as D 1351-02.2For 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
15、onthe ASTM website.3Available from The Insulated Cable Engineers Association, Inc. (ICEA), P.O.Box 1568, Carrollton, GA 30112, http:/.1*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,
16、 United States.5.5 Absorption CoeffcientTest according to Test MethodD 3349. Alternatively, a certification by the manufacturer ofthe polyethylene compound that the requirement has beencomplied with shall suffice.6. Electrical Requirements Electrical Requirements6.1 Order of TestingPerform the parti
17、al discharge, acvoltage, insulation resistance, and dc voltage tests in that orderwhen any of these tests are specified. The sequence of othertesting is not specified.6.2 Partial DischargeWhen tested in accordance withICEA T-24-380, as modified in Test Methods D 2633, eachlength of completed shielde
18、d power cable rated for service at2001 V and above shall comply with the minimum partialdischarge extinction level. See Test Methods D 2633.6.3 AC Voltage TestThe insulated conductor shall with-stand the ac voltage specified in Table 2 or Table 3 for 5 min.Unless otherwise specified, this test shall
19、 be omitted fornonshielded conductors rated up to 5000 V if the dc voltagetest described in 6.6 is performed.6.4 Insulation ResistanceThe insulated conductor shallhave an insulation-resistance value equal to or greater than thatcorresponding to a constant of 50 000 MV-1000 ft at 60 F(15.6 C). When t
20、he temperature of the water in which theinsulation is tested differs from 60 F, a correction factor mustbe applied. Table 1 of Test Methods D 2633 contains thecorrection factors. Each insulation or cable manufacturer canfurnish the 1 F coefficient for their insulation material byusing the procedure
21、given in Test Methods D 2633. Multiplythe measured value by the correction factor to obtain theinsulation resistance value corrected to 60 F.6.5 DC Voltage Test (Cables Rated at 5001 V and Above)Upon completion of the insulation resistance test, each lengthof insulated power cable rated for service
22、at 5001 V and overshall withstand for 15 min the dc test voltage given in Table 2or Table 3.6.6 DC Voltage Test (Cables Rated at 5000 V or Less)Upon completion of the insulation resistance test, each non-shielded conductor rated up to 5000 V shall withstand for 5min the dc test voltage given in Tabl
23、e 2 or Table 3. Unlessotherwise specified, it is acceptable to omit this test fornonshielded conductors rated up to 5000 V if the ac voltage testdescribed in 6.3 has been performed.7. Keywords7.1 cable; conductor; electrical; insulation; polyethylene;thermoplastic; wireTABLE 1 Physical Properties of
24、 CompoundUnaged Requirements:Tensile strength, min, psi (MPa) 1400 (9.7)Elongation at rupture, min, % 350Aged Requirements:After air oven aging at 100 6 1 C for 48 h:Tensile strength, % retention, min 75Elongation at rupture, % retention, min 75Absorption Coefficient, min, absorbance/nm 320D1351082T
25、ABLE 2 Conductor Sizes, Insulation Thicknesses, and Test Voltages for Polyethylene-Insulated Power CablesANOTE 1Column A thicknesses (0 to 2000 V) are applicable to single-conductor power cables for general application when a black pigmentedinsulation is used without a further covering.NOTE 2Column
26、B thicknesses (0 to 2000 V) are applicable to multiple-conductor cables with an outer covering and to single-conductor cables withan outer covering.NOTE 3To limit the maximum voltage stress on the insulation at the conductor to a safe value, the minimum size of the conductor shall be inaccordance wi
27、th Table 2.For cables or conditions of service where mechanical stresses govern, such as in submarine cables or long vertical risers, it is possible that theseminimum conductor sizes will not be strong enough.NOTE 4Polyethylene insulation used on nonshielded cable without an outer covering shall be
28、black pigmented insulation meeting the requirementsfor both polyethylene insulation and polyethylene jacket.NOTE 5Polyethylene insulation used on nonshielded cable without an outer covering for rated circuit voltages of 2001 to 5000 V shall be ozone anddischarge resistant when tested in accordance w
29、ith Specification D 2308.NOTE 6Carbon-black-pigmented polyethylene insulation shall not be used on power cable rated over 5000 V.Rated CircuitVoltage, Phase toPhase, VBConductor Size, Awgor kcmil (mm2)Insulation Thickness for 100 and 133Percent Insulation Levels,CGroundedand Ungrounded Neutrala-c Te
30、st Voltage,kV, for 100 and133 Percent InsulationLevels,CGrounded andUngrounded Neutrald-c Test Voltage, kV,for 100 and 133 Per-cent Insulation Levels,CGrounded and Un-grounded NeutralColumn A Column BABABmils mm mils mm0 to 600 14 to 9 (2.08 to 6.63) 45 1.14 30 0.76 4.0 3.5 12.0 10.58 to 2 (8.37 to
31、33.62) 60 1.52 45 1.14 5.5 5.5 16.5 16.51 to 4/0 (42.41 to 107.2) 80 2.03 55 1.40 7.0 7.0 21.0 21.0225 to 500 (114 to 253) 95 2.41 65 1.65 8.0 8.0 24.0 24.0525 to 1000 (266 to 507) 110 2.79 80 2.03 10.0 10.0 30.0 30.0601 to 2000 14 to 9 (2.08 to 6.63) 60 1.52 45 1.14 5.5 5.5 16.5 16.58 to 2 (8.37 to
32、 33.62) 70 1.78 55 1.40 7.0 7.0 21.0 21.01 to 4/0 (42.41 to 107.2) 90 2.29 65 1.65 8.0 8.0 24.0 24.0225 to 500 (140 to 253) 105 2.67 75 1.90 9.5 9.5 28.5 28.5525 to 1000 (266 to 507) 120 3.05 90 2.29 11.5 11.5 34.5 34.5100 Percent Insula-tion Level,DGroundedNeutral133 Percent Insula-tion Level,Ungro
33、undedNeutral100 PercentInsulationLevel,DGroundedNeutral133 PercentInsulationLevel, Un-groundedNeutral100 PercentInsulationLevel,GroundedNeutral133 PercentInsulationLevel, Un-groundedNeutralNONSHIELDEDE2001 to 5000 8 to 4/0 (8.37 to 107.2)225 to 500 (114 to 253)525 to 1000 (266 to 507)1101201302.793.
34、053.301101201302.793.053.30131313131313353535353535Rated CircuitVoltage, Phase toPhase, VBConductor Size, Awgor kcmil (mm2)100 PercentInsulation Level,DGrounded Neutral133 PercentInsulation Level,UngroundedNeutral100 PercentInsulationLevel,DGroundedNeutral133 PercentInsulationLevel, Un-groundedNeutr
35、al100 PercentInsulationLevel,GroundedNeutral133 PercentInsulationLevel, Un-GroundedNeutralSHIELDED2001 to 5000 8 to 1000 (8.37 to 507) 90 2.29 90 2.29 13 13 35 355001 to 8000 6 to 1000 (13.30 to 507) 115 2.92 140 3.56 18 22 45 458001 to 15000 2 to 1000 (33.62 to 507)F175 4.45 215 5.46 27 33 70 80150
36、01 to 25000 1 to 1000 (42.41 to 507) 260 6.60 345 8.76 38 49 100 12525001 to 28000 1 to 1000 (42.41 to 507) 280 7.11 42 10528001 to 35000 1/0 to 1000 (53.49 to 507) 345 8.76 49 125AFor series lighting cables, see Table 3.BThe actual operating voltage shall not exceed the rated circuit voltage by mor
37、e than (1) 5 percent during continuous operation or (2) 10 percent during emergencieslasting not more than 15 min.CThe selection of the cable insulation level to be used in a particular installation shall be made on the basis of the applicable phase to phase voltage and the generalsystem category as
38、 outlined below:100 Percent LevelIt is appropriate for cables in this category to be applied where the system is provided with relay protection such that ground faults will be clearedas rapidly as possible, but in any case within 1 min. While these cables are applicable to the great majority of cabl
39、e installations which are on grounded systems, theyare also potentially suitable on other systems for which the application of cables is acceptable provided the above clearing requirements are met in completelyde-energizing the faulted section. In common with other electrical equipment, the use of c
40、ables is not recommended on systems where the ratio of the zero to positivephase reactance of the system at the point of cable application lies between 1 and 40 since excessively high voltages will be encountered in the case of ground faults.133 Percent LevelThis insulation level corresponds to that
41、 formerly designated for ungrounded systems. It is appropriate for cables in this category to be applied insituations where the clearing time requirements of the 100 percent level category cannot be met, and yet there is adequate assurance that the faulted section will bede-energized in a time not e
42、xceeding 1 h. They are also suitable for use when additional insulation strength over the 100 percent level category is desirable.DWhere additional insulation thickness is desired, it shall be the same as for the 133 percent insulation level.EWhere cable is provided with a protective covering, these
43、 insulation thicknesses shall be 90 mils (2.29 mm) for all conductor sizes listed.FFor 133 percent insulation level (ungrounded neutral), the minimum conductor size is 1 Awg (42.41 mm2).D1351083SUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this specification sinc
44、e the last issue,D 1351 02, that may impact the use of this specification. (Approved January 1, 2008)(1) Revised 1.2, 1.3, 3.1.1, 3.2.1, 5.1, and 6.4.(2) Editorially revised 4.1.(3) Changed non-mandatory language in 5.3, 5.5, and 6.3.(4) Corrected units of absorption coefficient in Table 1.(5) Corre
45、cted “a-c” and “d-c” as “ac” and “dc” in Table 3.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
46、, and the riskof infringement 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 re
47、vision of this standard 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 yo
48、u 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 standard may be
49、 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).TABLE 3 Conductor Sizes, Insulation Thicknesses and Test Voltages for Polyethylene-Insulated Series Lighting CablesCircuit Voltage, VA,BConductor Size, Awg (mm2)Insulation ThicknessBtest Voltage, kVmils mm ac dc0 to 1000 10 to 8 (5.26 to 8.37)6 to 4 (13.30 to 21.15)45551.141.405.57.016.521.01001 to 2000 10 to 8 (5.26 to 8.37)6 to 4 (13.30 to 21.15)55651.401.657.08.021.024.0
