1、Designation: D1351 08D1351 14 An American National StandardStandard Specification forThermoplastic Polyethylene Insulation for Electrical Wireand Cable1This standard is issued under the fixed designation D1351; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case 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 which consists substanti
3、ally of polyethylene.1.2 This type of insulation is considered suitable for use on wire or cable that will be used for continuous operation at conductortemperatures up to 75 C with a maximum conductor size of 1000 kcmil (507 mm2). The maximum voltage rating shall not exceed35 000 V for power applica
4、tion or 9 000 V for series lighting.1.3 In many instances the insulation material cannot be tested unless it has been formed around a conductor. Therefore, testsdone on insulated wire or cable in this specification are solely to determine the relevant property of the insulation material and notto te
5、st the insulated conductor or completed cable.1.4 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those inparentheses are for information only.2. Referenced Documents2.1 ASTM Standards:2D1248 Specification for Polyethylene Plastics E
6、xtrusion Materials for Wire and CableD1711 Terminology Relating to Electrical InsulationD2308 Specification for Thermoplastic Polyethylene Jacket for Electrical Wire and CableD2633 Test Methods for Thermoplastic Insulations and Jackets for Wire and CableD3349 Test Method for Absorption Coefficient o
7、f Ethylene 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 D1711 for definitions of terms used in this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 aging (a
8、ct of), nexposure of materials to air at a temperature of 100 C for 48 h.4. Conductor Shields4.1 Conductor shields shall be used on solid and stranded conductors of power cables having rated circuit voltages above 2000V. This requirement does not apply to series lighting cables. Conductor shielding
9、is conducting material at least 0.0025 in. (0.06mm) thick applied over the surface of the conductor. The options include conducting nonmetallic tape, conducting compound, orconducting cement.1 This specification is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating
10、Materials and is the direct responsibility of SubcommitteeD09.18 on Solid Insulations, Non-Metallic Shieldings and Coverings for Electrical and Telecommunication Wires and Cables.Current edition approved Jan. 1, 2008March 1, 2014. Published February 2008April 2014. Originally approved in 1954. Last
11、previous edition approved in 20022008 asD1351-02.-08. DOI: 10.1520/D1351-08.10.1520/D1351-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document S
12、ummary page on the ASTM website.3 Available from The Insulated Cable Engineers Association, Inc. (ICEA), P.O. Box 1568, Carrollton, GA 30112, http:/.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the
13、previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of
14、 Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Physical Properties5.1 The polyethylene, before application to the conductor, shall comply with the requirements of Specification D
15、1248 for TypeI; ClassA, B or C; Category 4 or 5; Grade E4 or E5. The requirements of Specification D1248 do not apply to insulation removedfrom the conductor.5.2 Insulation exposed to sunlight or weather requires Specification D1248, Class C compound or suitable protective coverings.Class C compound
16、 shall meet the minimum absorption coefficient requirement in Table 1.5.3 Specimens removed from the wire or cable and tested at 20 to 30 C (68 to 8086 F) shall conform to the requirements forphysical properties specified in Table 1. Alternatively, the insulation shall be air-oven aged without remov
17、al from the conductor.5.4 Thickness of InsulationThe minimum average insulation thickness shall be as specified in Table 2 or Table 3 of thisspecification. The minimum thickness shall be at least 90 % of the specified minimum average thickness.5.5 Absorption CoeffcientTest according to Test Method D
18、3349. Alternatively, a certification by the manufacturer of thepolyethylene compound that the requirement has been complied with shall suffice.6. Electrical Requirements6.1 Order of TestingPerform the partial discharge, ac voltage, insulation resistance, and dc voltage tests in that order whenany of
19、 these tests are specified. The sequence of other testing is not specified.6.2 Partial DischargeWhen tested in accordance with ICEA T-24-380, as modified in Test Methods D2633, each length ofcompleted shielded power cable rated for service at 2001 V and above shall comply with the minimum partial di
20、scharge extinctionlevel. See Test Methods D2633.6.3 AC Voltage TestThe insulated conductor shall withstand the ac voltage specified in Table 2 or Table 3 for 5 min. Unlessotherwise specified, this test shall be omitted for nonshielded conductors rated up to 5000 V if the dc voltage test described in
21、 6.6is performed.TABLE 1 Physical Properties of CompoundUnaged Requirements:Tensile strength, min, psi (MPa) 1400 (9.7)Tensile strength, min, psi (MPa) 1500 (10.4)Elongation at rupture, min, % 350Aged Requirements:After air oven aging at 100 1 C for 48 h:Tensile strength, % retention, min 75Elongati
22、on at rupture, % retention, min 75Absorption Coefficient, min, absorbance/nm 320D1351 142TABLE 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 app
23、lication when a black pigmentedinsulation is used without a further covering.NOTE 2Column 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
24、 the conductor to a safe value, the minimum size of the conductor shall be inaccordance with 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.N
25、OTE 4Polyethylene insulation used on nonshielded cable without an outer covering shall be 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 vo
26、ltages of 2001 to 5000 V shall be ozone anddischarge resistant when tested in accordance with Specification D2308.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
27、 Thickness for 100 and 133Percent Insulation Levels,C Groundedand Ungrounded Neutrala-c Test Voltage,kV, for 100 and133 Percent InsulationLevels,C Grounded andUngrounded Neutrald-c Test Voltage, kV,for 100 and 133 Per-cent Insulation Levels,CGrounded and Un-grounded NeutralColumn A Column B A B A Bm
28、ils 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 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
29、.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 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
30、11.5 34.5 34.5100 Percent Insula-tion Level,DGroundedNeutral133 Percent Insula-tion Level,UngroundedNeutral100 PercentInsulationLevel,DGroundedNeutral133 PercentInsulationLevel, Un-groundedNeutral100 PercentInsulationLevel,GroundedNeutral133 PercentInsulationLevel, Un-groundedNeutralNONSHIELDEDE2001
31、 to 5000 8 to 4/0 (8.37 to 107.2)225 to 500 (114 to 253)525 to 1000 (266 to 507)1101201302.793.053.301101201302.793.053.30131313131313353535353535Rated CircuitVoltage, Phase toPhase, VBConductor Size, Awgor kcmil (mm2)100 PercentInsulation Level,DGrounded Neutral133 PercentInsulation Level,Ungrounde
32、dNeutral100 PercentInsulationLevel,DGroundedNeutral133 PercentInsulationLevel, Un-groundedNeutral100 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
33、.92 140 3.56 18 22 45 458001 to 15000 2 to 1000 (33.62 to 507)F 175 4.45 215 5.46 27 33 70 8015001 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 125A For series lighting ca
34、bles, see Table 3.B The actual operating voltage shall not exceed the rated circuit voltage by more than (1) 5 percent during continuous operation or (2) 10 percent during emergencies lastingnot more than 15 min.C The selection of the cable insulation level to be used in a particular installation sh
35、all be made on the basis of the applicable phase to phase voltage and the general systemcategory as 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 poss
36、ible, but in any case within 1 min. While these cables are applicable to the great majority of cable 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 c
37、ompletelyde-energizing the faulted section. In common with other electrical equipment, the use of cables 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
38、encountered in the case of ground faults.133 Percent LevelThis insulation level corresponds to that 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 me
39、t, and yet there is adequate assurance that the faulted section will bede-energized in a time not exceeding 1 h. They are also suitable for use when additional insulation strength over the 100 percent level category is desirable.D Where additional insulation thickness is desired, it shall be the sam
40、e as for the 133 percent insulation level.E Where cable is provided with a protective covering, these insulation thicknesses shall be 90 mils (2.29 mm) for all conductor sizes listed.F For 133 percent insulation level (ungrounded neutral), the minimum conductor size is 1 Awg (42.41 mm2).D1351 1436.4
41、 Insulation ResistanceThe insulated conductor shall have an insulation-resistance value equal to or greater than thatcorresponding to a constant of 50 000 M-1000 ft at 60 F (15.6 C). When the temperature of the water in which the insulationis tested differs from 60 F, a correction factor must be app
42、lied. Table 1 of Test Methods D2633 contains the correction factors.Each insulation or cable manufacturer can furnish the 1 F coefficient for their insulation material by using the procedure givenin Test Methods D2633. Multiply the measured value by the correction factor to obtain the insulation res
43、istance value correctedto 60 F.6.5 DC Voltage Test (Cables Rated at 5001 V and Above)Upon completion of the insulation resistance test, each length ofinsulated power cable rated for service at 5001 V and over shall withstand for 15 min the dc test voltage given in Table 2 or Table3.6.6 DC Voltage Te
44、st (Cables Rated at 5000 V or Less)Upon completion of the insulation resistance test, each nonshieldedconductor rated up to 5000 V shall withstand for 5 min the dc test voltage given in Table 2 or Table 3. Unless otherwise specified,it is acceptable to omit this test for nonshielded conductors rated
45、 up to 5000 V if the ac voltage test described in 6.3 has beenperformed.7. Keywords7.1 cable; conductor; electrical; insulation; polyethylene; thermoplastic; wireSUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this specification since the last issue,D1351 02D1351 0
46、8, that may impact the use of this specification. (Approved JanuaryMarch 1, 2008)2014)(1) Revised 1.2,Table 1.3,1. 3.1.1, 3.2.1, 5.1, and 6.4.(2) Editorially revisedRevised temperature 4.1.in Section 5.3.(3) Changed non-mandatory language in 5.3, 5.5, and 6.3.(4) Corrected units of absorption coeffi
47、cient in Table 1.(5) Corrected “a-c” and “d-c” as “ac” and “dc” in Table 3.TABLE 3 Conductor Sizes, Insulation Thicknesses and Test Voltages for Polyethylene-Insulated Series Lighting CablesCircuit Voltage, VA,B Conductor Size, Awg (mm2) Insulation ThicknessB test Voltage, kVmils mm ac dc0 to 1000 1
48、0 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)55651.401.657.08.021.024.02001 to 3000 10 to 8 (5.26 to 8.37)6 to 4 (13.30 to 21.15)75901.902.29101030303001 to 6000 8 to 4 (8.37 to 21.15) 110 2.79 13 356001 to 9000 8 to
49、4 (8.37 to 21.15) 150 3.81 19 55The following tabulation of series lighting transformer ratings is representative of those in common use:Rating, kW6,6-A Secondary 20-A SecondaryFull-load Voltage, V,with ProtectorsOpen-circuit Voltage, V,Without ProtectorsFull-load Voltage, V,with ProtectorsOpen-circuit Voltage,V, Without Protectors10 1515 2090 500 69015 2272 3090 750 102020 3030 4115 1000 136025 3787 5110 1250 168530 4545 6130 1500 202040 6060 8180 2000 2700A Aseparate jacket is not required. If protectors are employed, the thick
