1、Designation: B856 11Standard 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 Elec-trical ConductorsB498/B498M Specification for
7、Zinc-Coated (Galvanized)Steel Core Wire for Use in Overhead Electrical ConductorsB500/B500M Specification for Metallic Coated StrandedSteel Core for Use in Overhead Electrical ConductorsB502 Specification for Aluminum-Clad Steel Core Wire forUse in Overhead Electrical Aluminum ConductorsB549 Specifi
8、cation for Concentric-Lay-StrandedAluminumConductors, 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 Specification for Aluminu
9、m 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-Coated Steel Core Wire
10、 forUse in Overhead 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 Wirefor Overhead Electrical Conduct
11、orsB958 Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc5% Aluminum-MischmetalAlloy-Coated Steel Core Wire for Use in Overhead Elec-trical ConductorsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE527 Practice for Numbering
12、 Metals and Alloys in theUnified Numbering System (UNS)2.3 Other Standards:Aluminum Association Publication 50 Code words forOverhead Aluminum Electrical Conductors3NBS Handbook 100Copper Wire Tables of the NationalBureau of Standards43. Terminology3.1 For definitions of terms relating to conductors
13、 refer todefinitions found in Specification B354.1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved April 1, 2011. Published May 2011. Originallyappr
14、oved in 1995. Last previous edition approved in 2003 as B856-03. DOI:10.1520/B0856-11.2For 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
15、 page onthe ASTM website.3Available from the Aluminum Association, Inc., 900 19th Street, NW, Suite300, Washington, DC 2006.4Available from National Technical Information Services, 5285 Port RoyalRoad, Springfield, VA 22161.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
16、hohocken, PA 19428-2959, United States.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, steel supported.3.3.2 ACSS/AW2supported with regular strengthalumin
17、um-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, coating Class A in accordance withSpecification B498/B498M.3.3.5
18、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 B606.3.3.7 ACSS/GA4supported with extra-high strength zincClassAcoated
19、 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 coated steel core wire, coating ClassAin accordancewith Specification B
20、802/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 core wire in accordance with Specification B958.3.3.12 ACSS/MA5supp
21、orted 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 information:4.1.1 Quantity of each size, stranding, and class,4.1
22、.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 outer layer of aluminum wires ifother than right hand (see 7.3),4.1.6
23、 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 After stranding, the round aluminum
24、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 meet therequirements of Specification B498/B498M, B606, B802/B802M, B
25、803, 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 the finished individual aluminumwires composing the conductor may b
26、e 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 finishedcoated steel wires.7. Lay7.1 The length of lay of the various lay
27、ers 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 outside layer of aluminumwires shall be right hand unless otherwise
28、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 aluminum wires forstandard constructions are shown in Table 1.8.2
29、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 accor-dance with Specification B498/B498M (see Explanatory Note9)
30、;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 accordance with Speci-fication B802/B802M;8.2.4 High-strength Zn-
31、5A1-MM coated steel core wire,coating Class A (designated MA3) in accordance with Speci-fication B803;8.2.5 Extra-high-strength galvanized steel core wire coatingClass A (designated GA4) in accordance with SpecificationB957 (see Explanatory Note 9);8.2.6 Extra-high-strength Zn-5Al-MM coated steel co
32、rewire, coating Class A (designated MA4) in accordance withSpecification B958;8.2.7 Ultra-high-strength galvanized steel core wire coatingClass A (designated GA5) in accordance with SpecificationB957 (see Explanatory Note 9);B856 112TABLE 1 Construction Requirements of Aluminum Conductors, Steel Sup
33、ported (ACSS)ACSS Conductor Aluminum Wires Steel Wires NominalMassGA(X) orMA(X)(lb/1000ft)NominalOutsideDiameter(in.)Conductor Rated Strength (by type and coating of steel core wire)Size(kcmil)AStrandingCodeWordBNumberDiameter,(in.)Layers NumberDiameter,(in.)LayersGA2orMA2(kips)GA3orMA3(kips)GA4orMA
34、4(kips)GA5orMA5(kips)AW2(kips)AW3(kips)2156.0 84/19 Bluebird/ACSS84 0.1602 4 19 0.0961 2 2512 1.61 42.1 45.5 49.6 51.7 40.7 42.11780.0 84/19 Chukar/ACSS84 0.1456 4 19 0.0874 2 2061 1.45 35.3 38.2 41.6 43.9 33.6 35.31590.0 54/19 Falcon/ACSS54 0.1716 3 19 0.1030 2 2038 1.41 42.6 46.6 51.3 53.7 41.1 42
35、.61590.0 45/7 Lapwing/ACSS45 0.1880 3 7 0.1253 1 1790 1.36 27.9 29.6 32.2 33.5 27.0 27.51431.0 54/19 Plover/ACSS54 0.1628 3 19 0.0977 2 1834 1.34 38.4 41.9 46.2 48.3 36.9 38.41431.0 45/7 Bobolink/ACSS45 0.1783 3 7 0.1189 1 1611 1.29 25.1 27.0 29.4 30.5 24.3 25.11351.5 54/19 Martin/ACSS54 0.1582 3 19
36、 0.0949 2 1732 1.3 36.2 39.6 43.6 45.6 34.9 36.21351.5 45/7 Dipper/ACSS45 0.1733 3 7 0.1155 1 1521 1.26 23.7 25.5 27.7 28.8 23.0 23.71272.0 54/19 Pheasant/ACSS54 0.1535 3 19 0.0921 2 1630 1.26 34.1 37.3 41.1 43.0 32.8 34.11272.0 45/7 Bittern/ACSS45 0.1681 3 7 0.1121 1 1432 1.22 22.3 24.0 26.1 27.2 2
37、1.6 22.31192.5 54/19 Grackle/ACSS54 0.1486 3 19 0.0892 2 1529 1.22 32.6 35.5 39.1 41.5 30.8 32.61192.5 45/7 Bunting/ACSS45 0.1628 3 7 0.1085 1 1342 1.18 20.9 22.5 24.5 25.5 20.3 20.91113.0 54/19 Finch/ACSS54 0.1436 3 19 0.0862 2 1427 1.19 30.4 33.2 36.5 38.7 28.8 30.41113.0 45/7 Bluejay/ACSS45 0.157
38、3 3 7 0.1049 1 1253 1.14 19.5 21.0 22.9 23.8 18.9 19.51033.5 54/7 Curlew/ACSS54 0.1383 3 7 0.1383 1 1326 1.13 28.2 30.3 33.4 35.0 26.1 27.71033.5 45/7 Ortolan/ACSS45 0.1515 3 7 0.1010 1 1163 1.1 18.1 19.5 21.2 22.0 17.6 18.1954.0 54/7 Cardinal/ACSS54 0.1330 3 7 0.1329 1 1227 1.08 26.0 28.0 30.9 32.3
39、 24.6 25.5954.0 45/7 Rail/ACSS 45 0.1456 3 7 0.0971 1 1074 1.06 16.7 18.0 19.6 20.4 16.2 16.7795.0 30/19 Mallard/ACSS30 0.1628 2 19 0.0977 2 1234 1.05 34.3 37.9 42.1 44.3 32.9 34.3795.0 26/7 Drake/ACSS26 0.1749 2 7 0.1360 1 1091 1.01 25.9 28.0 31.0 32.5 24.4 25.4795.0 54/7 Condor/ACSS54 0.1213 3 7 0
40、.1213 1 1020 0.99 21.7 23.3 25.7 26.9 20.9 21.3795.0 45/7 Tern/ACSS 45 0.1329 3 7 0.0886 1 894.9 0.96 14.2 15.2 16.6 17.5 13.5 14.2636.0 26/7 Grosbeak/ACSS26 0.1564 2 7 0.1216 1 874.4 0.91 20.7 22.4 24.8 26.0 19.9 20.3636.0 24/7 Rook/ACSS24 0.1628 2 7 0.1085 1 818.2 0.89 17.3 19.0 20.9 21.9 16.7 17.
41、3B856113TABLE 1 ContinuedACSS Conductor Aluminum Wires Steel Wires NominalMassGA(X) orMA(X)(lb/1000ft)NominalOutsideDiameter(in.)Conductor Rated Strength (by type and coating of steel core wire)Size(kcmil)AStrandingCodeWordBNumberDiameter,(in.)Layers NumberDiameter,(in.)LayersGA2orMA2(kips)GA3orMA3(
42、kips)GA4orMA4(kips)GA5orMA5(kips)AW2(kips)AW3(kips)556.5 26/7 Dove/ACSS26 0.1463 2 7 0.1138 1 765.1 0.85 18.2 19.9 22.1 23.1 17.5 18.2556.5 24/7 Parakeet/ACSS24 0.1523 2 7 0.1015 1 715.9 0.84 15.2 16.6 18.3 19.1 14.6 15.2477.0 30/7 Hen/ACSS 30 0.1261 2 7 0.1261 1 746.3 0.83 21.0 22.7 25.4 26.7 20.1
43、20.5477.0 26/7 Hawk/ACSS26 0.1354 2 7 0.1053 1 655.8 0.79 15.6 17.1 18.9 19.8 14.9 15.6477.0 24/7 Flicker/ACSS24 0.1410 2 7 0.0940 1 613.6 0.78 13.0 14.2 15.7 16.4 12.5 13.0336.4 30/7 Oriole/ACSS30 0.1059 2 7 0.1059 1 526.3 0.69 14.8 16.3 18.2 19.1 14.2 14.8266.8 26/7 Partridge/ACSS26 0.1013 2 7 0.0
44、788 1 366.8 0.58 8.9 9.7 10.8 11.4 8.4 8.9AConversion factors:1 cmil = 5.067E04 mm2(0.0005067 mm2)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 kip = 4.448 kN (4.448 kN)BCode words shown in this column are obtained from “Publication
45、 50, Code Words for Overhead Aluminum Electrical Conductors,” by the Aluminum Association. They are provided for information only.B8561148.2.8 Ultra-high-strength Zn-5Al-MM coated steel corewire, coating Class A (designated MA5) in accordance withSpecification B958;8.2.9 Regular strength Aluminum Cl
46、ad steel (designatedAW2 in accordance with B502;8.2.10 High-strength Aluminum Clad steel (designatedAW3 in accordance with B502.9. Rated Strength of Conductor9.1 The rated strength of the completed ACSS conductorshall be taken as the aggregate strengths of the aluminum andsteel components, calculate
47、d as follows. The strength contri-bution of the aluminum wires shall be taken as that percentage,indicated in Table 3, of the sum of the strengths of the 1350-0wires calculated from their minimum average tensile strengthsspecified in Specification B609/B609M. The strength contri-bution of the steel
48、core wires shall be taken as that percentage,indicated in Table 3, of the sum of the strengths of the steelwires, calculated from their specified nominal wire diameterand the appropriate minimum ultimate tensile strengths givenin Specification B498/B498M, B502, B549, B606, B802/B802M, B803, B957,orB
49、958, whichever is applicable.9.2 Rated strength and breaking strength values shall berounded to three significant figures, in the final value only, inaccordance with the rounding method of Practice E29.9.3 Rated strength of typical constructions are given inTable 1.10. Density10.1 For the purpose of calculating mass, cross sections, andso forth, the density of aluminum 1350 shall be taken as 0.0975lb/in.3(2705 kg/m3) at 20C (see Explanatory Note 4).10.2 For the purpose of calculating mass, cross sections, andso forth, the density of galvanized or Zn-5A1-MM all
