1、Designation: B857 14Standard 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).
7、For 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.2. Referenced Documents2.1 Th
8、e 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 Metallic Electri-cal Co
9、nductorsB498/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 Steel Core Wire forUs
10、e 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 Aluminum-Alloy Conduct
11、ors, 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 Specification for High-Strengt
12、h Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use inOverhead Electrical ConductorsB856 Specification for Concentric-Lay-Stranded AluminumConductors, Coated Steel Supported (ACSS)B957 Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wi
13、re forOverhead Electrical ConductorsB958 Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead ElectricalConductorsE29 Practice for Using Significant Digits in Test Data to1This specification is under the jur
14、isdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved April 1, 2014. Published April 2014. Originallyapproved in 1995. Last previous edition approved in 2011 as B857 112. DOI:10.1520/B0857
15、-14.2For 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.Copyright ASTM International, 100 Barr Harbor Drive, PO B
16、ox C700, West Conshohocken, PA 19428-2959. United States1TABLE1ConstructionRequirementsforShapedWireCompactConcentric-Lay-StrandedAluminumConductors,CoatedSteelSupportedANOTE1Sizedtohaveareaequalaluminumcross-sectionalareatoanACSRorACSS,ClassAAconductor.ACSS/TWConductorSizeCodeWordBSizeandStrandingo
17、fACSSwithEqualAluminumCross-SectionalAreaAluminum StrandingSteelCoreStrandingNominalMassACSS/TWACSS/TWConductorRatedStrength(bytypeofsteelcorewire)Nominal OutsideDiameterkcmilCTypekcmilStrandingNumberofAluminumWiresNumberofLayersNumberofWiresIndividualStrandWireDiameter,in.GAXCorelb/1000ftGA2/MA2KIP
18、SGA3/MA3 KIPSGA4/MA4 KIPSGA5/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/TW477.026/71
19、8270.105365515.617.118.919.814.915.60.79477.023Hen/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/TW636.024/718270.108581817.319.02
20、0.921.916.717.30.89636.016Grosbeak/ACSS/TW636.026/720270.121687320.722.424.826.019.920.30.91795.07Tern/ACSS/TW795.045/717270.088689114.215.216.617.513.514.20.96795.010Puffin/ACSS/TW795.022/718270.110897418.920.622.623.718.318.90.98795.013Condor/ACSS/TW795.054/720270.1213102021.723.325.726.920.921.30
21、.99795.016Drake/ACSS/TW795.026/720270.1360109125.928.031.032.524.425.41.01795.023Mallard/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/TW954.045/732370.0971107416.718.019.620.416.216.71.06954.013Car
22、dinal/ACSS/TW954.054/720270.1329122726.028.030.932.324.625.51.081033.55Snowbird/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
23、/ACSS/TW1113.042/730370.0904119916.317.518.819.515.916.31.131113.07Bluejay/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/ACS
24、S/TW1192.545/733370.1085134220.922.524.525.520.320.91.181192.513Grackle/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/TW1272.045/735370.1121143222.324.026.127.221.622.31.221272.013Pheasan
25、t/ACSS/TW1272.054/19393190.0921163034.137.341.143.032.834.11.261351.57Dipper/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/TW1431.045/736370.1189161125.127.029.430.524.325.11.291431.013Plove
26、r/ACSS/TW1431.054/19393190.0977183438.441.946.248.336.938.41.341590.07Lapwing/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/TW1780.084/19373190.0874206135.338.241.643.933.635.31.452156.08Blueb
27、ird/ACSS/TW2156.084/19644190.0961251242.145.549.651.740.742.11.61AConversionfactors:1cmil=5.067E04mm2(0.0005067mm3)1in.=2.54E+01mm(25.4mm)1lb/1000ft=1.488kg/km1ft=3.048E01m(0.3048m)1lb=4.536E01kg(0.4536kg)1lbf=4.448E03kN(0.0044448kN)BCodeWordsshowninthiscolumnareobtainedfrom“Publication50,CodeWordsf
28、orOverheadAluminumElectricalConductors,”bytheAluminumAssociation.Theyareprovidedforinformationonly.CSeeExplanatoryNote4.B857 142TABLE2ConstructionRequirementsforShapedWireCompactConcentric-Lay-StrandedAluminumConductors,CoatedSteelSupportedANOTE1SizedtohaveadiameterequaltoaconcentricroundACSRorACSS,
29、ClassAAconductor.ACSS/TWConductorSizeCodeWordBSizeandStrandingofACSSwithEqualOverallConductorDiameterAluminum StrandingSteelCoreStrandingNominalMassACSS/TWACSS/TWConductorRatedStrength(bytypeofsteelcorewire)Nominal OutsideDiameterkcmilCTypekcmilStrandingNumberofAluminumWiresNumberofLayersNumberofWir
30、esIndividualStrandWireDiameter,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/TW556.524/720270.111185618.
31、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/TW795.045/732370.0973107816.818.119.720.416
32、.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/TW795.026/722270.1493131730.733.136.838.628.230.01.111080.07.900.045/720270.1033121118.920.422.223.118.418.91.131168.15Chey
33、enne/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/ACSS/TW1033.542/730370.0967137118.720.021.522.318.218.71.201257.17Nelson/ACS
34、S/TW1033.545/735370.1115141622.123.825.826.921.422.11.211233.613Yukon/ACSS/TW1033.554/7383190.0910158433.236.340.041.932.033.21.251372.55Truckee/ACSS/TW1113.042/730370.1004147920.221.523.224.019.620.21.251359.77Mackenzie/ACSS/TW1113.045/736370.1159153123.925.727.929.023.123.81.261334.613Thames/ACSS/
35、TW1113.054/19393190.0944171135.839.143.145.134.535.81.291467.85St.Croix/ACSS/TW1192.542/733370.1041158321.623.124.925.821.021.61.291455.37Miramichi/ACSS/TW1192.545/736370.1200163925.627.129.530.724.825.21.301433.613Merrimack/ACSS/TW1192.554/19393190.0978183838.442.046.348.437.038.41.341569.05Platte/
36、ACSS/TW1272.042/733370.1074169123.124.626.527.522.423.11.331557.47Potomac/ACSS/TW1272.045/736370.1241175427.329.031.632.826.526.91.351533.313RioGrande/ACSS/TW1272.054/19393190.1012196641.245.049.651.939.641.21.381657.47Schuylkill/ACSS/TW1351.545/736370.1280186629.130.933.634.928.228.61.391622.013Pec
37、os/ACSS/TW1351.554/19393190.1064210545.049.354.356.943.345.01.421758.67PeeDee/ACSS/TW1431.045/737370.1319198030.932.835.737.129.430.41.431730.613James/ACSS/TW1431.054/19393190.1075221946.450.855.958.544.746.41.471949.67Athabaska/ACSS/TW1590.045/742370.1392219734.336.539.340.831.733.51.501926.913Cumb
38、erland/ACSS/TW1590.054/19423190.1133246951.656.462.265.049.751.61.552153.88Powder/ACSS/TW1780.084/19644190.0961251042.145.549.651.740.742.11.602627.38Santee/ACSS/TW2156.084/19644190.1062306351.355.660.663.149.751.31.76AConversionfactors:1cmil=5.067E04mm2(0.0005067mm2)1in.=2.54E+01mm(25.4mm)1lb/1000f
39、t=1.488kg/km1ft=3.048E01m(0.3048m)1lb=4.536E01kg(0.4536kg)1lbf=4.448E03kN(0.004448kN)BCodeWordsshowninthiscolumnareobtainedfrom“Publication50,CodeWordsforOverheadAluminumElectricalConductors,”bytheAluminumAssociation.Theyareprovidedforinformationonly.CSeeExplanatoryNote4.B857 143Determine Conformanc
40、e with SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.3 Other Standards:NBS Handbook 100 Copper Wire Tables of the NationalBureau of Standards3Aluminum Association Publication 50 Code Words forOverhead Aluminum Electrical Conductors43. Terminology3.
41、1 DefinitionsFor definitions of terms relating toconductors, also refer to definitions found in SpecificationB354.3.2 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 Abbreviation
42、s:3.3.1 ACSS/TWshaped wire aluminum conductor, steelsupported.3.3.2 ACSS/TW/AW2supported with regular strengthaluminum-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
43、 using Class A zinc-coatedregular strength steel core wires in accordance with Specifica-tion B498/B498M.3.3.5 ACSS/TW/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 wi
44、res in accordance with Speci-fication B957.3.3.7 ACSS/TW/GA5ACSS using Class A zinc-coatedultra-high-strength steel core 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 AC
45、SS/TW/MA2ACSS using Class A Zn-5A1-MMcoated regular strength steel core wires in accordance withSpecification B802/B802M.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
46、-high-strength steel core wires in accordance withSpecification B958.3.3.12 ACSS/TW/MA5ACSS using Class A Zn-5A1-MMcoated ultra-high-strength steel core wires in accordance withSpecification B958.4. Ordering Information4.1 Orders for material under this specification shall includethe following infor
47、mation:4.1.1 Quantity of each size,4.1.2 Conductor size, kcmil area and diameter,4.1.3 Conductor type and number of wires, 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 ifot
48、her 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),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 A
49、fter stranding, the trapezoidal aluminum wires (seeDefinitions B354) shall conform to the requirements of OTemper in 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 conforms to Section 13. The elongation shall not beless than 20 % after stranding.5.2 Before stranding, the steel core wire shall meet ther
