1、Designation: B857 18Standard Specification forShaped Wire Compact Concentric-Lay-Stranded AluminumConductors, Coated-Steel Supported (ACSS/TW)1This standard is issued under the fixed designation B857; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、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. Scope1.1 This specification covers shaped wire compactconcentric-lay-stranded aluminum conductors
3、, steel supported(ACSS/TW) for use as overhead electrical conductors (seeExplanatory Note 1).1.2 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 s
4、tandard.1.2.1 ExceptionsFor conductor sizes designated by AWGor kcmil sizes, the requirements in SI units are numericallyconverted from the corresponding requirements in inch-poundunits. For conductor sizes designated by SI units only, therequirements are stated or derived in SI units. For density,r
5、esistivity, and temperature, the values stated in SI units are tobe regarded as standard.1.3 ACSS/TW is designed to increase the aluminum area fora given diameter of conductor by the use of trapezoidal shapedwires (TW), or to reduce the diameter for a given area ofaluminum. The conductors consist of
6、 a central core of roundsteel wire(s) surrounded by two or more layers of trapezoidalaluminum 1350-0 wires. Different strandings of the same sizeof conductor are identified by type, which is the approximateratio of steel area to aluminum area expressed in percent (seeTable 1, Table 2 and Table 3). F
7、or the purpose of thisspecification, the sizes listed in Table 1 and Table 2 aretabulated on the basis of the finished conductor having an areaor outside diameter equal to that of specified sizes of standardACSR, ACSS, and ACSR/TW so as to facilitate conductorselection.1.4 This international standar
8、d was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Refe
9、renced Documents2.1 The following documents of the issue in effect on dateof material purchase form part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB354 Terminology Relating to Uninsulated M
10、etallic Electri-cal ConductorsB498/B498M Specification for Zinc-Coated (Galvanized)Steel Core Wire for Use in Overhead Electrical Conduc-torsB500/B500M Specification for Metallic Coated or Alumi-num Clad Stranded Steel Core for Use in OverheadElectrical ConductorsB502 Specification for Aluminum-Clad
11、 Steel Core Wire forUse in Overhead Electrical Aluminum ConductorsB549 Specification for Concentric-Lay-Stranded AluminumConductors, Aluminum-Clad Steel Reinforced for Use inOverhead Electrical ConductorsB606 Specification for High-Strength Zinc-Coated (Galva-nized) Steel Core Wire for Aluminum and
12、Aluminum-Alloy Conductors, Steel ReinforcedB609/B609M Specification for Aluminum 1350 RoundWire, Annealed and Intermediate Tempers, for ElectricalPurposesB802/B802M Specification for Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for AluminumConductors, Steel Reinforced (ACSR)B803 Specific
13、ation for High-Strength Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use inOverhead Electrical ConductorsB856 Specification for Concentric-Lay-Stranded AluminumConductors, Coated Steel Supported (ACSS)1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Co
14、nductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved March 1, 2018. Published March 2018. Originallyapproved in 1995. Last previous edition approved in 2014 as B857 14. DOI:10.1520/B0857-18.2For referenced ASTM standards, visit the AS
15、TM 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
16、d StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers
17、to Trade (TBT) Committee.1B957 Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire forOverhead Electrical ConductorsB958 Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire fo
18、r Use in Overhead ElectricalConductorsB1006 Specification for Electrical Overhead ConductorCode Word NamesE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.3 Other Stan
19、dards:NBS Handbook 100 Copper Wire Tables of the NationalBureau of Standards3Aluminum Association Publication 50 Code Words forOverhead Aluminum Electrical Conductors43. Terminology3.1 DefinitionsFor definitions of terms relating toconductors, also refer to definitions found in SpecificationB354.3.2
20、 Definitions of Terms Specific to This Standard:3.2.1 aluminum-cladaluminum bonded.3.2.2 galvanizedzinc coated.3.2.3 Zn-5A1-MMzinc-5 % aluminum-mischmetal alloycoated.3.3 Abbreviations:3.3.1 ACSS/TWshaped wire aluminum conductor, steelsupported.3.3.2 ACSS/TW/AW2supported with regular strengthaluminu
21、m-clad core wires in accordance with SpecificationB502.3.3.3 ACSS/TW/AW3supported with high-strengthaluminum-clad core wires in accordance with SpecificationB502.3.3.4 ACSS/TW/GA2ACSS using Class A zinc-coatedregular strength steel core wires in accordance with Specifica-tion B498/B498M.3.3.5 ACSS/T
22、W/GA3ACSS using Class A zinc-coatedhigh-strength steel core wires in accordance with SpecificationB606.3.3.6 ACSS/TW/GA4ACSS using Class A zinc-coatedextra-high-strength steel core wires in accordance with Speci-fication B957.3.3.7 ACSS/TW/GA5ACSS using Class A zinc-coatedultra-high-strength steel c
23、ore wires in accordance with Speci-fication B957.3.3.8 ACSS/TW/GC2ACSS using Class C zinc-coatedregular strength steel core wires in accordance with Specifica-tion B498/B498M.3.3.9 ACSS/TW/MA2ACSS using Class A Zn-5A1-MMcoated regular strength steel core wires in accordance withSpecification B802/B8
24、02M.3.3.10 ACSS/TW/MA3ACSS using Class A Zn-5A1-MMcoated high strength steel core wires in accordance withSpecification B803.3.3.11 ACSS/TW/MA4ACSS using Class A Zn-5A1-MMcoated extra-high-strength steel core wires in accordance withSpecification B958.3.3.12 ACSS/TW/MA5ACSS using Class A Zn-5A1-MMco
25、ated ultra-high-strength steel core wires in accordance withSpecification B958.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size,4.1.2 Conductor size, kcmil area and diameter,4.1.3 Conductor type and number of w
26、ires, aluminum andsteel, (Table 1 and Table 2),4.1.4 Type of steel core wire and class (if applicable) ofcoating (see 5.2),4.1.5 Direction of lay of outer layer of aluminum wires ifother than right-hand (see 7.7),4.1.6 Special tension test, if desired (see 14.3),4.1.7 Package size and type (see 16.1
27、),4.1.8 Special package markings, if required (see 16.4),4.1.9 Heavy wood lagging, if required (see 16.3), and4.1.10 Place of inspection (see Section 15).5. Requirement for Wires5.1 After stranding, the trapezoidal aluminum wires (seeDefinitions B354) shall conform to the requirements of OTemper in
28、accordance with Specification B609/B609M exceptfor shape and diameter tolerance requirements. The tensilestrength and elongation requirements of trapezoidal wires shallbe the same as for round wires of equal area. The areatolerances for trapezoidal wires shall be such that the finishedconductor conf
29、orms to Section 13. The elongation shall not beless than 20 % after stranding.5.2 Before stranding, the steel core wire shall meet therequirements of Specifications B498/B498M, B502, B606,B802/B802M, B803, B957,orB958 whichever is applicable.5.3 The stranded steel core shall meet the requirements of
30、Specification B500/B500M or B549, as applicable.6. Joints6.1 Electric-butt welds, cold-pressure welds, and electric-butt, cold upset welds in the finished individual aluminumwires composing the conductor may be made during thestranding process. No weld shall occur within 50 ft (15 m) ofa weld in the
31、 same wire or in any other wire of the completedconductor (see Explanatory Note 2).3Available from National Technical Information Service (NTIS), 5301 ShawneeRd., Alexandria, VA 22312, http:/www.ntis.gov.4Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,Arlington, VA 22209, ht
32、tp:/www.aluminum.org.B857 182TABLE1ConstructionRequirementsforShapedWireCompactConcentric-Lay-StrandedAluminumConductors,CoatedSteelSupportedANOTE1Sizedtohaveareaequalaluminumcross-sectionalareatoanACSRorACSS,ClassAAconductor.ACSS/TWConductorSizeCodeWordBSizeandStrandingofACSSwithEqualAluminumCross-
33、SectionalAreaAluminum StrandingSteelCoreStrandingNominalMassACSS/TWACSS/TWConductorRatedStrength(bytypeofsteelcorewire)Nominal OutsideDiameterkcmilCTypekcmilStrand-ingNumberofAluminumWiresNumberofLayersNumberofWiresIndividualStrandWireDiameter,in.GAXCorelb/1000ftGA2/MA2 KIPSGA3/MA3 KIPSGA4/MA4 KIPSG
34、A5/MA5 KIPSAW2KIPSAW3KIPSin.266.816Partridge/ACSS/TW266.826/718270.07883498.909.7010.811.48.408.900.58336.423Oriole/ACSS/TW336.430/717270.105952614.816.318.219.114.214.80.69477.013Flicker/ACSS/TW477.024/718270.094061213.014.215.716.412.513.00.78477.016Hawk/ACSS/TW477.026/718270.105365515.617.118.919
35、.814.915.60.79477.023Hen/ACSS/TW477.030/717270.126174621.022.725.426.720.120.50.83556.513Parakeet/ACSS/TW556.524/718270.101571415.216.618.319.114.615.20.84556.516Dove/ACSS/TW556.526/720270.113876418.219.922.123.117.518.20.85636.013Rook/ACSS/TW636.024/718270.108581817.319.020.921.916.717.30.89636.016
36、Grosbeak/ACSS/TW636.026/720270.121687320.722.424.826.019.920.30.91795.07Tern/ACSS/TW795.045/717270.088689114.215.216.617.513.514.20.96795.010PuffinD/ACSS/TW795.022/718270.1108D97418.920.622.623.718.318.90.98795.013Condor/ACSS/TW795.054/720270.1213102021.723.325.726.920.921.30.99795.016Drake/ACSS/TW7
37、95.026/720270.1360109125.928.031.032.524.425.41.01795.023Mallard/ACSS/TW795.030/19222190.0977123434.337.942.144.332.934.31.05954.05Phoenix/ACSS/TW954.042/730370.0837102814.215.216.317.113.614.21.05954.07Rail/ACSS/TW954.045/732370.0971107416.718.019.620.416.216.71.06954.013Cardinal/ACSS/TW954.054/720
38、270.1329122726.028.030.932.324.625.51.081033.55Snowbird/ACSS/TW1033.542/730370.0871111415.416.417.718.514.815.41.091033.57Ortolan/ACSS/TW1033.545/732370.1010116318.119.521.222.017.618.11.101033.513Curlew/ACSS/TW1033.554/721270.1383132628.230.333.435.026.127.71.131113.05Avocet/ACSS/TW1113.042/730370.
39、0904119916.317.518.819.515.916.31.131113.07Bluejay/ACSS/TW1113.045/733370.1049125319.521.022.923.818.919.51.141113.013Finch/ACSS/TW1113.054/19383190.0862142730.433.236.538.728.830.41.191192.55Oxbird/ACSS/TW1192.542/730370.0936128517.518.720.220.917.017.51.171192.57Bunting/ACSS/TW1192.545/733370.1085
40、134220.922.524.525.520.320.91.181192.513Grackle/ACSS/TW1192.554/19383190.0892152932.635.539.141.530.832.61.221272.05Scissortail/ACSS/TW1272.042/730370.0967137118.720.021.522.318.218.71.201272.07Bittern/ACSS/TW1272.045/735370.1121143222.324.026.127.221.622.31.221272.013Pheasant/ACSS/TW1272.054/193931
41、90.0921163034.137.341.143.032.834.11.261351.57Dipper/ACSS/TW1351.545/735370.1155152123.725.527.728.823.023.71.261351.513Martin/ACSS/TW1351.554/19393190.0949173236.239.643.645.634.936.21.301431.07Bobolink/ACSS/TW1431.045/736370.1189161125.127.029.430.524.325.11.291431.013Plover/ACSS/TW1431.054/193931
42、90.0977183438.441.946.248.336.938.41.341590.07Lapwing/ACSS/TW1590.045/736370.1253179027.929.632.233.527.027.51.361590.013Falcon/ACSS/TW1590.054/19423190.1030203842.646.651.353.741.142.61.411780.08Chukar/ACSS/TW1780.084/19373190.0874206135.338.241.643.933.635.31.452156.08Bluebird/ACSS/TW2156.084/1964
43、4190.0961251242.145.549.651.740.742.11.61AConversionfactors:1cmil=5.067E04mm2(0.0005067mm3)1in.=2.54E+01mm(25.4mm)1lb1000ft=1.488kgkm1ft=3.048E01m(0.3048m)1lb=4.536E01kg(0.4536kg)1lbf=4.448E03kN(0.0044448kN)BCodeWordsshowninthiscolumnareobtainedfromSpecificationB1006.Theyareprovidedforinformationonl
44、y.CSeeExplanatoryNote4.DFor795kcmilType10(PuffinACSSTW)conductortheindicated0.1108in.steelwiresizedoesnotcorrespondwiththeconcentricroundwire795kcmil22/7PuffinACSSconductor.Theroundwireconstructionutilizesa0.1056in.diametersteelcorewire.TheindustryaccepteddimensionforthePuffinACSSTWsteelwireis0.1108
45、in.TechnicallythisrenderstheconstructionasaType11conductor.Theconductormass,ratedstrengthanddiametervaluescorrespondtothe0.1108in.diametersteelcore.B857 183TABLE2ConstructionRequirementsforShapedWireCompactConcentric-Lay-StrandedAluminumConductors,CoatedSteelSupportedANOTE1Sizedtohaveadiameterequalt
46、oaconcentricroundACSRorACSS,ClassAAconductor.ACSS/TWConductorSizeCodeWordBSizeandStrandingofACSSwithEqualOverallConductorDiameterAluminum StrandingSteelCoreStrandingNominalMassACSS/TWACSS/TWConductorRatedStrength(bytypeofsteelcorewire)Nominal OutsideDiameterkcmilCTypekcmilStrandingNumberofAluminumWi
47、resNumberofLayersNumberofWiresIndividualStrandWireDiameter,in.GAXCorelb/1000ftGA2/MA2KIPSGA3/MA3KIPSGA4/MA4KIPSGA5/MA5KIPSAW2KIPSAW3KIPSin.571.713Mohawk/ACSS/TW477.024/718270.103073415.617.118.819.715.015.60.85565.316Calumet/ACSS/TW477.026/720270.114677618.420.222.423.517.718.40.86666.613Mystic/ACSS
48、/TW556.524/720270.111185618.219.921.922.917.518.20.91664.816Oswego/ACSS/TW556.526/720270.124491321.723.426.027.220.921.30.93768.213Maumee/ACSS/TW636.024/720270.119598721.023.025.326.520.221.00.98762.816Wabash/ACSS/TW636.026/720270.1331104724.926.829.731.223.424.40.99957.27Kettle/ACSS/TW795.045/73237
49、0.0973107816.818.119.720.416.316.81.06946.710Fraser/ACSS/TW795.022/735370.1154114021.122.925.126.220.321.11.08966.213Columbia/ACSS/TW795.054/721270.1338124026.428.331.332.824.925.91.09959.616Suwannee/ACSS/TW795.026/722270.1493131730.733.136.838.628.230.01.111080.07.900.045/720270.1033121118.920.422.223.118.418.91.131168.15Cheyenne/ACSS/TW954.042/730370.0926125917.218.319.720.416.717.11.161158.07Genesee/ACSS/TW954.045/733370.1078130720.522.124.025.019.920.51.171158.413Hudson/ACSS/TW954.054/725270.1467148831.133.537.038.828.730.51.201272.05Catawba/A
