1、Designation: B856 12Standard Specification forConcentric-Lay-Stranded Aluminum Conductors, CoatedSteel Supported (ACSS)1This standard is issued under the fixed designation B856; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear 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 round wire concentric-lay-stranded aluminum conductors, steel supported (ACSS) for us
3、eas overhead electrical conductors (see Explanatory Note 1).1.2 The values stated in inch-pound or SI units are to beregarded separately as standard. Each system shall be usedindependently of the other. Combining values from the twosystems may result in nonconformance with the specification.For cond
4、uctor sizes designated by AWG or kcmil sizes, therequirements in SI units are numerically converted from thecorresponding requirements in inch-pound units. For conductorsizes designation by AWG or kcmil, the requirements in SIunits have been numerically converted from correspondingvalues stated or d
5、erived in inch-pound units. For conductorsizes designated by SI units only, the requirements are stated orderived in SI units.1.2.1 For density, resistivity and temperature, the valuesstated in SI units are to be regarded as standard.2. Referenced Documents2.1 The following documents of the issue in
6、 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 ConductorsB498/B498M Specification for
7、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 forUse in Overhead Electrical Aluminum Con
8、ductorsB549 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 Conductors, Steel ReinforcedB609/B609M Speci
9、fication 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-Strength Zinc5 % Aluminum-Mischmetal Alloy-C
10、oated Steel Core Wire for Use inOverhead Electrical ConductorsB857 Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Sup-ported (ACSS/TW)B957 Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire forOverhe
11、ad 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 toDetermine Conformance with SpecificationsE527 Pr
12、actice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.3 Other Standards:AluminumAssociation Publication 50 Code words for Over-head Aluminum Electrical Conductors3NBS Handbook 100Copper Wire Tables of the NationalBureau of Standards41This specification is under the jurisdictio
13、n of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved June 1, 2012. Published October 2012. Originallyapproved in 1995. Last previous edition approved in 2011 as B856-11. DOI:10.1520/B0856-12.2For
14、 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.3Available from Aluminum Association, Inc., 1525 Wilson Blvd., Su
15、ite 600,Arlington, VA 22209, http:/www.aluminum.org.4Available from National Technical Information Service (NTIS), 5285 PortRoyal Rd., Springfield, VA 22161, http:/www.ntis.gov.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Termin
16、ology3.1 For definitions of terms relating to conductors refer todefinitions found in Specification B354.3.2 Definitions:3.2.1 aluminum-cladaluminum bonded.3.2.2 galvanizedzinc coated.3.2.3 Zn-5A1-MMZinc-5% Aluminum-Mischmetal Alloy(Zn-5A1-MM) coated.3.3 Abbreviations:3.3.1 ACSSaluminum conductor, s
17、teel supported.3.3.2 ACSS/AW2supported with regular strengthaluminum-clad core wire in accordance with SpecificationB502.3.3.3 ACSS/AW3supported with high strength aluminum-clad core wire in accordance with Specification B502.3.3.4 ACSS/GA2supported with regular strength galva-nized steel core wire,
18、 coating Class A in accordance withSpecification B498/B498M.3.3.5 ACSS/GC2supported with regular strength galva-nized steel core wire, coating Class C in accordance withSpecification B498/B498M.3.3.6 ACSS/GA3supported with high-strength galvanizedsteel core wire in accordance with Specification B606
19、.3.3.7 ACSS/GA4supported with extra-high strength zincClassAcoated steel core wire in accordance with SpecificationB957.3.3.8 ACSS/GA5supported with ultra-high strength zincClassAcoated steel core wire in accordance with SpecificationB957.3.3.9 ACSS/MA2supported with regular strength Zn-5A1-MM coate
20、d steel core wire, coating ClassAin accordancewith Specification B802/B802M.3.3.10 ACSS/MA3supported with high-strength Zn-5A1-MM coated steel core wire in accordance with Specifica-tion B803.3.3.11 ACSS/MA4supported with extra-high strengthZinc-5% Aluminum-Mischmetal Alloy (Zn-5A1-MM) Coatedsteel c
21、ore wire in accordance with Specification B958.3.3.12 ACSS/MA5supported with ultra-high strengthZinc-5% Aluminum-Mischmetal Alloy (Zn-5A1-MM) Coatedsteel core wire in accordance with Specification B958.4. Ordering Information4.1 Orders for material under this specification shall includethe following
22、 information:4.1.1 Quantity of each size, stranding, and class,4.1.2 Conductor size, circular-mil area or AWG, and diam-eter (see Section 9 and Table 1),4.1.3 Number of wires, aluminum and steel,4.1.4 Type of steel core wire and class (if applicable) ofcoating (see 5.2),4.1.5 Direction of lay of out
23、er layer of aluminum wires ifother than right hand (see 7.3),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
24、).5. Requirement for Wires5.1 After stranding, the round aluminum wires shall con-form to the requirements of Specification B609/B609M for1350-0 temper, except for elongation requirements. The elon-gation shall not be less than 20 % after stranding.5.2 Before stranding, the steel core wire shall mee
25、t therequirements of Specification B498/B498M, B606, B802/B802M, B803, B957,orB958, whichever is applicable.5.3 The stranded steel core shall meet the requirements ofSpecification B500/B500M as applicable.6. Joints6.1 Electric-butt welds, cold-pressure welds, and electric-butt, cold-upset welds in t
26、he 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 same wire or in any other wire of the completedconductor (see Explanatory Note 2).6.2 There shall be no joints of any kind made in the finishe
27、dcoated steel wires.7. Lay7.1 The length of lay of the various layers of aluminumwires in a conductor shall conform to Table 2 (see ExplanatoryNote 3).7.2 The length of lay of the various layers of steel wires ina conductor shall conform to Specification B500/B500M.7.3 The direction of lay of the ou
28、tside layer of aluminumwires shall be right hand unless otherwise specified in thepurchase order. The direction of lay of the aluminum and steelwires shall be reversed in successive layers.8. Construction8.1 The number and diameter of the aluminum and steelwires and the area of cross section of the
29、aluminum wires forstandard constructions are shown in Table 1.8.2 ACSS may be constructed using steel core wire with anumber of different types. The acceptable core wires are, butnot limited to:8.2.1 Regular strength Galvanized steel core wires, withcoating Classes A or C (designated GA2 and GC2) in
30、 accor-dance with Specification B498/B498M (see Explanatory Note9);8.2.2 High-strength galvanized steel core wire, coatingClass A (designated GA3) in accordance with SpecificationB606 (see Explanatory Note 9);8.2.3 Regular strength Zn-5A1-MM coated steel core wire,coating Class A (designated MA2) in
31、 accordance with Speci-fication B802/B802M;8.2.4 High-strength Zn-5A1-MM coated steel core wire,coating Class A (designated MA3) in accordance with Speci-fication B803;B856 122TABLE 1 Construction Requirements of Aluminum Conductors, Steel Supported (ACSS)ACSS Conductor Aluminum Wires Steel WiresNom
32、inalMassGA(X)orMA(X)(lb/1000ft)NominalOutsideDiameter(in.)Rated StrengthB(by type and coating ofsteel core wire)Size(kcmil)Stranding CodewordAClass NumberDiameter(in.)Layers NumberDiameter(in.)LayersGA2orMA2(kips)GA3orMA3(kips)AW2(kips)2312.0 76/19 Thrasher/ACSSAA 76 0.1744 4 19 0.0814 2 2523 1.802
33、35.6 38.1 34.12167.0 72/7 Kiwi/ACSSAA 72 0.1735 4 7 0.1157 1 2301 1.735 29.0 30.8 28.22156.0 84/19 Bluebird/ACSSAA 84 0.1602 4 19 0.0961 2 2508 1.762 42.1 45.5 40.71780.0 84/19 Chukar/ACSSAA 84 0.1456 4 19 0.0874 2 2072 1.602 35.4 38.2 33.61590.0 54/19 Falcon/ACSSAA 54 0.1716 3 19 0.1030 2 2042 1.54
34、5 42.6 46.6 41.11590.0 45/7 Lapwing/ACSSAA 45 0.1880 3 7 0.1253 1 1790 1.504 27.9 29.6 27.01510.5 54/19 Parrot/ACSSAA 54 0.1672 3 19 0.1003 2 1938 1.505 40.4 44.2 38.91510.5 45/7 Nuthatch/ACSSAA 45 0.1832 3 7 0.1221 1 1700 1.466 26.5 28.1 25.71431.0 54/19 Plover/ACSSAA 54 0.1628 3 19 0.0977 2 1838 1
35、.465 38.4 41.9 36.91431.0 45/7 Bobolink/ACSSAA 45 0.1783 3 7 0.1189 1 1611 1.427 25.1 27.0 24.31351.0 54/19 Martin/ACSSAA 54 0.1582 3 19 0.0949 2 1735 1.424 36.2 39.6 34.91351.0 45/7 Dipper/ACSSAA 45 0.1733 3 7 0.1155 1 1521 1.386 23.7 25.5 23.01272.0 54/19 Pheasant/ACSSAA 54 0.1535 3 19 0.0921 2 16
36、34 1.382 34.1 37.3 32.81272.0 45/7 Bittern/ACSSAA 45 0.1681 3 7 0.1121 1 1432 1.345 22.3 24.0 21.61192.5 54/19 Grackle/ACSSAA 54 0.1486 3 19 0.0892 2 1531 1.338 32.6 35.5 30.81192.5 45/7 Bunting/ACSSAA 45 0.1628 3 7 0.1085 1 1342 1.302 21.4 23.5 20.81113.0 54/19 Finch/ACSSAA 54 0.1436 3 19 0.0862 2
37、1430 1.293 30.4 33.2 28.81113.0 45/7 Bluejay/ACSSAA 45 0.1573 3 7 0.1049 1 1254 1.259 19.5 21.1 18.91033.5 54/7 Curlew/ACSSAA 54 0.1383 3 7 0.1383 1 1329 1.245 28.2 30.3 26.11033.5 45/7 Ortolan/ACSSAA 45 0.1515 3 7 0.1010 1 1163 1.212 18.1 19.5 17.6954.0 54/7 Cardinal/ACSSAA 54 0.1329 3 7 0.1329 1 1
38、227 1.196 26.0 28.0 24.6954.0 45/7 Rail/ACSSAA 45 0.1456 3 7 0.0971 1 1074 1.165 16.7 18.0 16.2900.0 54/7 Canary/ACSSAA 54 0.1291 3 7 0.1291 1 1158 1.162 24.6 26.4 23.2900.0 45/7 Ruddy/ACSSAA 45 0.1414 3 7 0.0943 1 1013 1.131 15.8 17.0 15.3795.0 30/19 Mallard/ACSSAA 30 0.1628 2 19 0.0977 2 1234 1.14
39、0 34.3 37.9 32.9B856123TABLE 1 ContinuedACSS Conductor Aluminum Wires Steel WiresNominalMassGA(X)orMA(X)(lb/1000ft)NominalOutsideDiameter(in.)Rated StrengthB(by type and coating ofsteel core wire)Size(kcmil)Stranding CodewordAClass NumberDiameter(in.)Layers NumberDiameter(in.)LayersGA2orMA2(kips)GA3
40、orMA3(kips)AW2(kips)795.0 54/7 Condor/ACSSAA 54 0.1213 3 7 0.1213 1 1022 1.092 21.7 23.3 20.9795.0 45/7 Tern/ACSSAA 45 0.1329 3 7 0.0886 1 895.0 1.063 14.2 15.2 13.5795.0 26/7 Drake/ACSSAA 26 0.1749 2 7 0.1360 1 1093 1.108 25.9 28.0 24.4795.0 24/7 Cuckoo/ACSSAA 24 0.1820 2 7 0.1213 1 1023 1.092 21.7
41、 23.3 20.9715.5 30/19 Redwing/ACSSAA 30 0.1544 2 19 0.0926 2 1109 1.081 30.8 34.0 29.5715.5 26/7 Starling/ACSSAA 26 0.1659 2 7 0.1290 1 983.7 1.051 23.3 25.2 22.0715.5 24/7 Stilt/ACSSAA 24 0.1727 2 7 0.1151 1 921.0 1.036 19.5 21.3 18.8666.6 26/7 Gannet/ACSSAA 26 0.1601 2 7 0.1245 1 916.2 1.014 21.7
42、23.4 20.9666.6 24/7 Flamingo/ACSSAA 24 0.1667 2 7 0.1111 1 857.9 1.000 18.2 19.9 17.5636.0 30/19 Egret/ACSSAA 30 0.1456 2 19 0.0874 2 987.2 1.019 28.0 30.9 26.3636.0 30/7 Scoter/ACSSAA 30 0.1456 2 7 0.1456 1 995.1 1.019 27.4 29.7 25.1636.0 26/7 Grosbeak/ACSSAA 26 0.1564 2 7 0.1216 1 874.2 0.990 20.7
43、 22.4 19.9636.0 24/7 Rook/ACSSAA 24 0.1628 2 7 0.1085 1 818.2 0.977 17.3 19.0 16.7605.0 30/19 Teal/ACSSAA 30 0.1420 2 19 0.0852 2 938.6 0.994 26.6 29.3 25.0605.0 30/7 WoodDuck/ACSSAA 30 0.1420 2 7 0.1420 1 946.5 0.994 26.0 28.3 24.4605.0 26/7 Squab/ACSSAA 26 0.1525 2 7 0.1186 1 831.3 0.966 19.7 21.3
44、 19.0605.0 24/7 Peacock/ACSSAA 24 0.1588 2 7 0.1059 1 778.8 0.953 16.5 18.1 15.9556.5 30/7 Eagle/ACSSAA 30 0.1362 2 7 0.1362 1 870.7 0.953 24.5 26.5 22.9556.5 26/7 Dove/ACSSAA 26 0.1463 2 7 0.1138 1 765.2 0.927 18.2 19.9 17.5556.5 24/7 Parakeet/ACSSAA 24 0.1523 2 7 0.1015 1 716.1 0.914 15.2 16.6 14.
45、6477.0 30/7 Hen/ACSSAA 30 0.1261 2 7 0.1261 1 746.4 0.883 21.0 22.7 20.1477.0 26/7 Hawk/ACSSAA 26 0.1354 2 7 0.1053 1 655.3 0.858 15.6 17.1 14.9477.0 24/7 Flicker/ACSSAA 24 0.1410 2 7 0.0940 1 613.9 0.846 13.0 14.2 12.5397.5 30/7 Lark/ACSSAA 30 0.1151 2 7 0.1151 1 621.8 0.806 17.5 19.3 16.7397.5 26/
46、7 Ibis/ACSSAA 26 0.1236 2 7 0.0961 1 546.0 0.783 13.0 14.2 12.4B856124TABLE 1 ContinuedACSS Conductor Aluminum Wires Steel WiresNominalMassGA(X)orMA(X)(lb/1000ft)NominalOutsideDiameter(in.)Rated StrengthB(by type and coating ofsteel core wire)Size(kcmil)Stranding CodewordAClass NumberDiameter(in.)La
47、yers NumberDiameter(in.)LayersGA2orMA2(kips)GA3orMA3(kips)AW2(kips)397.5 24/7 Brant/ACSSAA 24 0.1287 2 7 0.0858 1 511.4 0.772 11.0 12.1 10.4336.4 30/7 Oriole/ACSSAA 30 0.1059 2 7 0.1059 1 526.4 0.741 14.8 16.3 14.2336.4 26/7 Linnet/ACSSAA 26 0.1137 2 7 0.0884 1 462.0 0.720 11.2 12.3 10.5300.0 26/7 O
48、strich/ACSSAA 26 0.1074 2 7 0.0835 1 412.2 0.680 10.0 10.9 9.40266.8 26/7 Partridge/ACSSAA 26 0.1013 2 7 0.0788 1 366.9 0.642 8.88 9.73 8.37211.3 12/7 Cochin/ACSSAA (HS) 12 0.1327 1 7 0.1327 1 526.8 0.664 21.2 23.1 19.7203.2 16/19 Brahma/ACSSAA (HS) 16 0.1127 1 19 0.0977 2 674.6 0.714 30.5 34.1 29.1
49、190.8 12/7 Dorking/ACSSAA (HS) 12 0.1261 1 7 0.1261 1 475.7 0.631 19.1 20.9 18.3176.9 12/7 Dotterel/ACSSAA (HS) 12 0.1214 1 7 0.1214 1 440.9 0.607 17.7 19.4 16.9159.0 12/7 Guinea/ACSSAA (HS) 12 0.1151 1 7 0.1151 1 396.3 0.576 15.9 17.8 15.2134.6 12/7 Leghorn/ACSSAA (HS) 12 0.1059 1 7 0.1059 1 335.5 0.530 13.5 15.0 12.9110.8 12/7 Minorca/ACSSAA (HS) 12 0.0961 1 7 0.0961 1 276.3 0.481 11.1 12.4 10.6101.8 12/7 Petrel/ACSSAA (HS) 12 0.0921 1 7 0.0921 1 253.8 0.461 10.2 11.4 9.75ACode words shown in this column are obtained from “Publication 50, Code Words for Overhe
