1、Designation: B857 111Standard 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.1NOTESections 8.2.9 and 8.2.10 were editorially updated in February 2013.1. Scope1.1 This specifica
3、tion covers shaped wire compactconcentric-lay-stranded aluminum conductors, 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
4、to SI units that are provided for information onlyand are not considered standard.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 un
5、its only, therequirements are stated or derived in SI units. For density,resistivity, 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
6、reduce the diameter for a given area ofaluminum. The conductors consist of 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
7、to aluminum area expressed in percent (seeTable 1, Table 2, and Table 3). 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 AC
8、SR/TW so as to facilitate conductorselection.2. Referenced 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
9、ConductorsB354 Terminology Relating to Uninsulated Metallic 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 OverheadElect
10、rical ConductorsB502 Specification for Aluminum-Clad 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-Co
11、ated (Galva-nized) Steel Core Wire for Aluminum and 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 Alum
12、inumConductors, Steel Reinforced (ACSR)B803 Specification for High-Strength Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use inOverhead Electrical Conductors1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of
13、 Subcommittee B01.07 onConductors of Light Metals.Current edition approved April 1, 2011. Published July 2011. Originallyapproved in 1995. Last previous edition approved in 2009 as B857 09. DOI:10.1520/B0857-11E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM C
14、ustomer 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. United States1TABLE 1 Construction Requirements
15、 for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel SupportedANOTE 1Sized to have area equal aluminum cross-sectional area to an ACSR or ACSS, Class AA conductor.ACSS/TWConductor SizeCode WordBSize and Strandingof ACSSwith Equal AluminumCross-Sectional AreaAluminumStra
16、ndingSteel CoreStrandingNominal MassACSS/TWACSS/TW Conductor Rated Strength(by type of steel core wire)NominalOutsideDiameterkcmilCType kcmil StrandingNumberofAluminumWiresNumberofLayersNumberofWiresIndividualStrandWireDiameter,in.GAX Corelb/1000 ftGA2 / MA2KIPSGA3 /MA3KIPSGA4 /MA4KIPSGA5 /MA5KIPSAW
17、2KIPSAW3KIPSin.266.8 16 Partridge/ACSS/TW 266.8 26/7 18 2 7 0.0788 349 8.90 9.70 10.8 11.4 8.40 8.90 0.58336.4 23 Oriole/ACSS/TW 336.4 30/7 17 2 7 0.1059 526 14.8 16.3 18.2 19.1 14.2 14.8 0.69477.0 13 Flicker/ACSS/TW 477.0 24/7 18 2 7 0.0940 612 13.0 14.2 15.7 16.4 12.5 13.0 0.78477.0 16 Hawk/ACSS/T
18、W 477.0 26/7 18 2 7 0.1053 655 15.6 17.1 18.9 19.8 14.9 15.6 0.79477.0 23 Hen/ACSS/TW 477.0 30/7 17 2 7 0.1261 746 21.0 22.7 25.4 26.7 20.1 20.5 0.83556.5 13 Parakeet/ACSS/TW 556.5 24/7 18 2 7 0.1015 714 15.2 16.6 18.3 19.1 14.6 15.2 0.84556.5 16 Dove/ACSS/TW 556.5 26/7 20 2 7 0.1138 764 19.9 18.2 2
19、2.1 23.1 17.5 18.2 0.85636.0 13 Rook/ACSS/TW 636.0 24/7 18 2 7 0.1085 818 19.0 17.3 20.9 21.9 16.7 17.3 0.89636.0 16 Grosbeak/ACSS/TW 636.0 26/7 20 2 7 0.1216 873 22.4 20.7 24.8 26.0 19.9 20.3 0.91795.0 7 Tern/ACSS/TW 795.0 45/7 17 2 7 0.0886 891 15.2 14.2 16.6 17.5 13.5 14.2 0.96795.0 10 Puffin/ACS
20、S/TW 795.0 22/7 18 2 7 0.1108 974 20.6 18.9 22.6 23.7 18.3 18.9 0.98795.0 13 Condor/ACSS/TW 795.0 54/7 20 2 7 0.1213 1020 23.3 21.7 25.7 26.9 20.9 21.3 0.99795.0 16 Drake/ACSS/TW 795.0 26/7 20 2 7 0.1360 1091 28.0 25.9 31.0 32.5 24.4 25.4 1.01795.0 23 Mallard/ACSS/TW 795.0 30/19 22 2 19 0.0977 1234
21、37.9 34.3 42.1 44.3 32.9 34.3 1.05954.0 5 Phoenix/ACSS/TW 954.0 42/7 30 3 7 0.0837 1028 15.2 14.2 16.3 17.1 13.6 14.2 1.05954.0 7 Rail/ACSS/TW 954.0 45/7 32 3 7 0.0971 1074 18.0 16.7 19.6 20.4 16.2 16.7 1.06954.0 13 Cardinal/ACSS/TW 954.0 54/7 20 2 7 0.1329 1227 28.0 26.0 30.9 32.3 24.6 25.5 1.08103
22、3.5 5 Snowbird/ACSS/TW 1033.5 42/7 30 3 7 0.0871 1114 16.4 15.4 17.7 18.5 14.8 15.4 1.091033.5 7 Ortolan/ACSS/TW 1033.5 45/7 32 3 7 0.1010 1163 19.5 18.1 21.2 22.0 17.6 18.1 1.101033.5 13 Curlew/ACSS/TW 1033.5 54/7 21 2 7 0.1383 1326 30.3 28.2 33.4 35.0 26.1 27.7 1.131113.0 5 Avocet/ACSS/TW 1113.0 4
23、2/7 30 3 7 0.0904 1199 17.5 16.3 18.8 19.5 15.9 16.3 1.131113.0 7 Bluejay/ACSS/TW 1113.0 45/7 33 3 7 0.1049 1253 21.0 19.5 22.9 23.8 18.9 19.5 1.141113.0 13 Finch/ACSS/TW 1113.0 54/19 38 3 19 0.0862 1427 33.2 30.4 36.5 38.7 28.8 30.4 1.191192.5 5 Oxbird/ACSS/TW 1192.5 42/7 30 3 7 0.0936 1285 18.7 17
24、.5 20.2 20.9 17.0 17.5 1.171192.5 7 Bunting/ACSS/TW 1192.5 45/7 33 3 7 0.1085 1342 22.5 20.9 24.5 25.5 20.3 20.9 1.181192.5 13 Grackle/ACSS/TW 1192.5 54/19 38 3 19 0.0892 1529 35.5 32.6 39.1 41.5 30.8 32.6 1.221272.0 5 Scissortail/ACSS/TW1272.0 42/7 30 3 7 0.0967 1371 20.0 18.7 21.5 22.3 18.2 18.7 1
25、.201272.0 7 Bittern/ACSS/TW 1272.0 45/7 35 3 7 0.1121 1432 24.0 22.3 26.1 27.2 21.6 22.3 1.221272.0 13 Pheasant/ACSS/TW 1272.0 54/19 39 3 19 0.0921 1630 37.3 34.1 41.1 43.0 32.8 34.1 1.261351.5 7 Dipper/ACSS/TW 1351.5 45/7 35 3 7 0.1155 1521 25.5 23.7 27.7 28.8 23.0 23.7 1.261351.5 13 Martin/ACSS/TW
26、 1351.5 54/19 39 3 19 0.0949 1732 39.6 36.2 43.6 45.6 34.9 36.2 1.301431.0 7 Bobolink/ACSS/TW 1431.0 45/7 36 3 7 0.1189 1611 27.0 25.1 29.4 30.5 24.3 25.1 1.291431.0 13 Plover/ACSS/TW 1431.0 54/19 39 3 19 0.0977 1834 41.9 38.4 46.2 48.3 36.9 38.4 1.341590.0 7 Lapwing/ACSS/TW 1590.0 45/7 36 3 7 0.125
27、3 1790 29.6 27.9 32.2 33.5 27.0 27.5 1.361590.0 13 Falcon/ACSS/TW 1590.0 54/19 42 3 19 0.1030 2038 46.6 42.6 51.3 53.7 41.1 42.6 1.411780.0 8 Chukar/ACSS/TW 1780.0 84/19 37 3 19 0.0874 2061 38.2 35.3 41.6 43.9 33.6 35.3 1.452156.0 8 Bluebird/ACSS/TW 2156.0 84/19 64 4 19 0.0961 2512 45.5 42.1 49.6 51
28、.7 40.7 42.1 1.61AConversion factors:1 cmil = 5.067E04 mm2(0.0005067 mm3)1 in. = 2.54E+01 mm (25.4 mm)1 lb/1000ft = 1.488 kg/km1 ft = 3.048E01 m (0.3048 m)1 lb = 4.536E01 kg (0.4536 kg)1 lbf = 4.448E03 kN (0.0044448 kN)BCode Words shown in this column are obtained from “Publication 50, Code Words fo
29、r Overhead Aluminum Electrical Conductors,” by the Aluminum Association. They are provided for information only.CSee Explanatory Note 4.B8571112TABLE 2 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel SupportedANOTE 1Sized to have a diameter
30、 equal to a concentric round ACSR or ACSS, Class AA conductor.ACSS/TWConductor SizeCode WordBSize andStrandingof ACSSwith EqualOverallConductorDiameterAluminumStrandingSteel Core StrandingNominalMassACSS/TWACSS/TW Conductor Rated Strength(by type of steel core wire)NominalOutsideDiameterkcmilCType k
31、cmil StrandingNumberofAluminumWiresNumberofLayersNumber ofWiresIndividualStrand WireDiameter,in.GAX Corelb/1000 ft GA2/MA2KIPSGA3/MA3KIPSGA4 / MA4KIPSGA5 / MA5KIPSAW2KIPSAW3KIPSin.571.7 13 Mohawk/ACSS/TW 477.0 24/7 18 2 7 0.1030 734 17.1 15.6 18.8 19.7 15.0 15.6 0.85565.3 16 Calumet/ACSS/TW 477.0 26
32、/7 20 2 7 0.1146 776 20.2 18.4 22.4 23.5 17.7 18.4 0.86666.6 13 Mystic/ACSS/TW 556.5 24/7 20 2 7 0.1111 856 19.9 18.2 21.9 22.9 17.5 18.2 0.91664.8 16 Oswego/ACSS/TW 556.5 26/7 20 2 7 0.1244 913 23.4 21.7 26.0 27.2 20.9 21.3 0.93768.2 13 Maumee/ACSS/TW 636.0 24/7 20 2 7 0.1195 987 23.0 21.0 25.3 26.
33、5 20.2 21.0 0.98762.8 16 Wabash/ACSS/TW 636.0 26/7 20 2 7 0.1331 1047 26.8 24.9 29.7 31.2 23.4 24.4 0.99957.2 7 Kettle/ACSS/TW 795.0 45/7 32 3 7 0.0973 1078 18.1 16.8 19.7 20.4 16.3 16.8 1.06946.7 10 Fraser/ACSS/TW 795.0 22/7 35 3 7 0.1154 1140 22.9 21.1 25.1 26.2 20.3 21.1 1.08966.2 13 Columbia/ACS
34、S/TW 795.0 54/7 21 2 7 0.1338 1240 28.3 26.4 31.3 32.8 24.9 25.9 1.09959.6 16 Suwannee/ACSS/TW 795.0 26/7 22 2 7 0.1493 1317 33.1 30.7 36.8 38.6 28.2 30.0 1.111080.0 7 . . . 900.0 45/7 20 2 7 0.1033 1211 20.4 18.9 22.2 23.1 18.4 18.9 1.131168.1 5 Cheyenne/ACSS/TW 954.0 42/7 30 3 7 0.0926 1259 18.3 1
35、7.2 19.7 20.4 16.7 17.1 1.161158.0 7 Genesee/ACSS/TW 954.0 45/7 33 3 7 0.1078 1307 22.1 20.5 24.0 25.0 19.9 20.5 1.171158.4 13 Hudson/ACSS/TW 954.0 54/7 25 2 7 0.1467 1488 33.5 31.1 37.0 38.8 28.7 30.5 1.201272.0 5 Catawba/ACSS/TW 1033.5 42/7 30 3 7 0.0967 1371 20.0 18.7 21.5 22.3 18.2 18.7 1.201257
36、.1 7 Nelson/ACSS/TW 1033.5 45/7 35 3 7 0.1115 1416 23.8 22.1 25.8 26.9 21.4 22.1 1.211233.6 13 Yukon/ACSS/TW 1033.5 54/7 38 3 19 0.0910 1584 36.3 33.2 40.0 41.9 32.0 33.2 1.251372.5 5 Truckee/ACSS/TW 1113.0 42/7 30 3 7 0.1004 1479 21.5 20.2 23.2 24.0 19.6 20.2 1.251359.7 7 Mackenzie/ACSS/TW 1113.0 4
37、5/7 36 3 7 0.1159 1531 25.7 23.9 27.9 29.0 23.1 23.8 1.261334.6 13 Thames/ACSS/TW 1113.0 54/19 39 3 19 0.0944 1711 39.1 35.8 43.1 45.1 34.5 35.8 1.291467.8 5 St. Croix/ACSS/TW 1192.5 42/7 33 3 7 0.1041 1583 23.1 21.6 24.9 25.8 21.0 21.6 1.291455.3 7 Miramichi/ACSS/TW 1192.5 45/7 36 3 7 0.1200 1639 2
38、7.1 25.6 29.5 30.7 24.8 25.2 1.301433.6 13 Merrimack/ACSS/TW 1192.5 54/19 39 3 19 0.0978 1838 42.0 38.4 46.3 48.4 37.0 38.4 1.341569.0 5 Platte/ACSS/TW 1272.0 42/7 33 3 7 0.1074 1691 24.6 23.1 26.5 27.5 22.4 23.1 1.331557.4 7 Potomac/ACSS/TW 1272.0 45/7 36 3 7 0.1241 1754 29.0 27.3 31.6 32.8 26.5 26
39、.9 1.351533.3 13 Rio Grande/ACSS/TW 1272.0 54/19 39 3 19 0.1012 1966 45.0 41.2 49.6 51.9 39.6 41.2 1.381657.4 7 Schuylkill/ACSS/TW 1351.5 45/7 36 3 7 0.1280 1866 30.9 29.1 33.6 34.9 28.2 28.6 1.391622.0 13 Pecos/ACSS/TW 1351.5 54/19 39 3 19 0.1064 2105 49.3 45.0 54.3 56.9 43.3 45.0 1.421758.6 7 Pee
40、Dee/ACSS/TW 1431.0 45/7 37 3 7 0.1319 1980 32.8 30.9 35.7 37.1 29.4 30.4 1.431730.6 13 James/ACSS/TW 1431.0 54/19 39 3 19 0.1075 2219 50.8 46.4 55.9 58.5 44.7 46.4 1.471949.6 7 Athabaska/ACSS/TW 1590.0 45/7 42 3 7 0.1392 2197 36.5 34.3 39.3 40.8 31.7 33.5 1.501926.9 13 Cumberland/ACSS/TW 1590.0 54/1
41、9 42 3 19 0.1133 2469 56.4 51.6 62.2 65.0 49.7 51.6 1.552153.8 8 Powder/ACSS/TW 1780.0 84/19 64 4 19 0.0961 2510 45.5 42.1 49.6 51.7 40.7 42.1 1.602627.3 8 Santee/ACSS/TW 2156.0 84/19 64 4 19 0.1062 3063 55.6 51.3 60.6 63.1 49.7 51.3 1.76AConversion factors:1 cmil = 5.067E04 mm2(0.0005067 mm2)1 in.
42、= 2.54E+01 mm (25.4 mm)1 lb/1000 ft = 1.488 kg/km1 ft = 3.048E01 m (0.3048 m)1 lb = 4.536E01 kg (0.4536 kg)1 lbf = 4.448E03 kN (0.004448 kN)BCode Words shown in this column are obtained from “Publication 50, Code Words for Overhead Aluminum Electrical Conductors,” by the Aluminum Association. They a
43、re provided for information only.CSee Explanatory Note 4.B8571113B856 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 Wire forOverhead Electrical Conducto
44、rsB958 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 toDetermine Conformance with SpecificationsE527 Practice for Numbering M
45、etals and Alloys in theUnified Numbering System (UNS)2.3 Other Standards:NBS Handbook 100Copper Wire Tables of the NationalBureau of Standards3Aluminum Association Publication 50 Code Words forOverhead Aluminum Electrical Conductors43. Terminology3.1 DefinitionsFor definitions of terms relating toco
46、nductors, 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 Abbreviations:3.3.1 ACSS/TWshaped wire aluminum conductor, stee
47、lsupported.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 using Class A zinc-coatedregular strength steel co
48、re 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 wires in accordance with Speci-fication B957.3.3.7 AC
49、SS/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 ACSS/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-high
