ASTM D1351-2014 Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable《电线和电缆用热塑性聚乙烯绝缘材料的标准规范》.pdf
《ASTM D1351-2014 Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable《电线和电缆用热塑性聚乙烯绝缘材料的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM D1351-2014 Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable《电线和电缆用热塑性聚乙烯绝缘材料的标准规范》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
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
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