1、Designation: B856 18Standard 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.1.3 This international standard was developed in accor-dance with
6、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. Referenced Documents2.1 The following do
7、cuments 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 ConductorsB498/B
8、498M 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 forUse in Overhead
9、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 Conductors, Steel Rei
10、nforcedB609/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-Strength Zinc5 % Alum
11、inum-Mischmetal Alloy-Coated 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) St
12、eel Core Wire 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 ElectricalConductorsB1006 Specification for Electrical Overhead ConductorCode Word NamesE29 Practice f
13、or Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcom
14、mittee B01.07 onConductors of Light Metals.Current edition approved March 1, 2018. Published March 2018. Originallyapproved in 1995. Last previous edition approved in 2013 as B856 13. DOI:10.1520/B0856-18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer S
15、ervice 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 StatesThis international standard was developed i
16、n 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 to Trade (TBT) Committee.12.3 Other Standards:Alumi
17、numAssociation Publication 50 Code words for Over-head Aluminum Electrical Conductors3NBS Handbook 100 Copper Wire Tables of the NationalBureau of Standards43. Terminology3.1 For definitions of terms relating to conductors refer todefinitions found in Specification B354.3.2 Definitions:3.2.1 aluminu
18、m-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 strengthaluminum-clad core wire in accordance with SpecificationB502.3.3.3 ACSS/AW
19、3supported 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 ACSS/GC2supported with regular strength galva-nized steel core wire,
20、 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 steel core wire in accordance with SpecificationB957.3.3.8 ACSS/GA5
21、supported 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 B802/B802M.3.3.10 ACSS/MA3supported with high-strength Zn-5A1-MM coat
22、ed 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/MA5supported with ultra-high strengthZinc-5% Aluminum-Mischmetal Alloy (Zn-
23、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,4.1.2 Conductor size, circular-mil area or AWG, and diam-eter (see Sect
24、ion 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 Special tension test, if desired (see 14.3),4.1.7 Package size and
25、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 wires shall con-form to the requirements of Specification B609/B609M
26、 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, B803, B957,orB958, whichever is applicable.5.3 The stranded steel cor
27、e 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 be made during thestranding process. No weld shall occur within 50 ft
28、 (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 layers of aluminumwires in a conductor shall conform to Table 2 (see Ex
29、planatoryNote 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 specified in thepurchase order. The direction of lay of the aluminum
30、 and steelwires shall be reversed in successive layers.7.4 In a conductor having multiple layers of aluminumwires, the lay ratio of any aluminum layer shall not be greaterthan the lay ratio of the aluminum layer immediately beneathit. Similarly, in a conductor having multiple layers of steelwires in
31、 the core, the lay ratio of a steel layer shall not begreater than the lay ratio of the steel layer immediately beneathit.3Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,Arlington, VA 22209, http:/www.aluminum.org.4Available from National Technical Information Service (NTIS)
32、, 5301 ShawneeRd., Alexandria, VA 22312, http:/www.ntis.gov.B856 182TABLE1ConstructionRequirementsofAluminumConductors,SteelSupported(ACSS)ACSSConductorAluminumWireSteelWiresNominalMassGA(X)orMA(X)(lb/1000ft)RatedStrength(bytypeandcoatingofsteelwires)Size(kcmil)StrandingCodewordAClassNumberDiameter(
33、in.)LayersNumberDiameter(in.)LayersGA2orMA2(kips)GA3orMA3(kips)GA4orMA4 (iips)GA5orMA5(kips)AW2(kips)AW3(kips)266.826/7Partridge/ACSSAA260.1013270.07881366.88.889.7310.811.48.378.88266.830/7Junco/ACSSAA300.0943270.09431417.411.713.014.415.211.211.7300.026/7Ostrich/ACSSAA260.1074270.08351412.410.010.
34、912.112.89.4010.0336.426/7Linnet/ACSSAA260.1137270.08851462.511.212.313.614.410.511.2336.430/7Oriole/ACSSAA300.1059270.10591526.314.816.318.219.114.214.8397.524/7Brant/ACSSAA240.1287270.08581511.411.012.113.314.110.411.0397.526/7Ibis/ACSSAA260.1236270.09621546.513.014.215.816.512.413.0397.530/7Lark/
35、ACSSAA300.1151270.11511621.917.519.321.522.616.717.5477.024/7Flicker/ACSSAA240.1410270.09401613.613.014.215.716.412.513.0477.026/7Hawk/ACSSAA260.1354270.10531655.815.617.118.919.814.915.6477.030/7Hen/ACSSAA300.1261270.12611746.321.022.725.326.720.120.5556.524/7Parakeet/ACSSAA240.1523270.10151716.115
36、.216.618.319.114.615.2556.526/7Dove/ACSSAA260.1463270.11381765.118.219.922.123.117.518.2556.530/7Eagle/ACSSAA300.1362270.13621870.624.526.529.631.122.924.0605.024/7Peacock/ACSSAA240.1588270.10581778.316.518.019.920.815.916.5605.026/7Squab/ACSSAA260.1525270.11861831.819.721.724.025.119.019.7605.030/7
37、WoodDuck/ACSSAA300.1420270.14201946.526.028.331.633.324.425.5605.030/19Teal/ACSSAA300.14202190.08522938.626.629.332.634.725.026.6636.024/7Rook/ACSSAA240.1628270.10851818.217.319.020.921.916.717.3636.026/7Grosbeak/ACSSAA260.1564270.12161874.420.722.424.826.019.920.3636.030/7Scoter/ACSSAA300.1456270.1
38、4561995.027.429.733.235.025.126.8636.030/19Egret/ACSSAA300.14562190.08742986.828.030.934.336.626.328.0666.624/7Flamingo/ACSSAA240.1667270.11111857.618.219.921.922.917.518.2666.626/7Gannet/ACSSAA260.1601270.12451916.421.723.426.027.320.921.3715.524/7Stilt/ACSSAA240.1727270.11511920.519.521.323.524.61
39、8.819.5715.526/7Starling/ACSSAA260.1659270.12901983.723.325.227.929.322.022.9715.530/19Redwing/ACSSAA300.15442190.092721,11030.934.137.939.829.530.9795.024/7Cuckoo/ACSSAA240.1820270.121311,02321.723.325.726.920.921.3795.026/7Drake/ACSSAA260.1749270.136011,09325.928.031.032.624.425.4795.042/7Macaw/AC
40、SSAA420.1376370.07641857.511.812.613.614.211.411.8795.045/7Tern/ACSSAA450.1329370.08861894.914.215.216.517.413.514.2795.054/7Condor/ACSSAA540.1213370.121311,02321.723.325.726.920.921.3795.030/19Mallard/ACSSAA300.16282190.097721,23334.337.942.144.332.934.3900.045/7Ruddy/ACSSAA450.1414370.094311,01315
41、.817.018.519.215.315.8900.054/7Canary/ACSSAA540.1291370.129111,15824.626.429.130.523.224.1954.024/7Redbird/ACSSAA240.1994270.132911,22726.028.030.932.324.625.5954.045/7Rail/ACSSAA450.1456370.097111,07416.718.019.620.416.216.7954.048/7Towhee/ACSSAA480.1410370.109711,12219.721.323.324.319.019.7954.054
42、/7Cardinal/ACSSAA540.1329370.132911,22726.028.030.932.324.625.5954.030/19Canvasback/ACSSAA300.17832190.107021,48041.145.450.553.139.441.11033.542/7Snowbird/ACSSAA420.1569370.087111,11515.416.417.718.514.815.41033.545/7Ortolan/ACSSAA450.1515370.101011,16318.119.521.222.017.618.11033.554/7Curlew/ACSSA
43、A540.1383370.138311,33028.230.333.435.026.127.71113.045/7Bluejay/ACSSAA450.1573370.104811,25319.521.022.823.818.919.51113.054/19Finch/ACSSAA540.14363190.086121,42930.433.236.538.728.730.41192.545/7Bunting/ACSSAA450.1628370.108511,34220.922.524.525.420.320.91192.554/19Grackle/ACSSAA540.14863190.08922
44、1,53132.635.539.141.530.832.61272.045/7Bittern/ACSSAA450.1681370.112111,43222.324.026.127.121.622.31272.054/19Pheasant/ACSSAA540.15353190.092121,63334.137.341.143.032.834.11351.045/7Dipper/ACSSAA450.1733370.115511,52123.725.527.728.823.023.71351.054/19Martin/ACSSAA540.15823190.094921,73536.239.643.6
45、45.634.936.2B856 183TABLE1ContinuedACSSConductorAluminumWireSteelWiresNominalMassGA(X)orMA(X)(lb/1000ft)RatedStrength(bytypeandcoatingofsteelwires)Size(kcmil)StrandingCodewordAClassNumberDiameter(in.)LayersNumberDiameter(in.)LayersGA2orMA2(kips)GA3orMA3(kips)GA4orMA4 (iips)GA5orMA5(kips)AW2(kips)AW3
46、(kips)1431.045/7Bobolink/ACSSAA450.1783370.118911,61125.127.029.430.524.325.11431.054/19Plover/ACSSAA540.16283190.097721,83738.441.946.248.336.938.41510.045/7Nuthatch/ACSSAA450.1832370.122111,70026.528.130.631.825.726.11510.054/19Parrot/ACSSAA540.16723190.100321,93940.444.248.751.038.940.41590.042/7
47、Ratite/ACSSAA420.1946370.108111,71523.425.026.927.922.723.41590.045/7Lapwing/ACSSAA450.1880370.125311,79027.929.632.233.527.027.51590.054/19Falcon/ACSSAA540.17163190.103022,04142.646.651.453.741.142.61780.084/19Chukar/ACSSAA840.14563190.087322,07135.338.241.643.933.635.32034.572/7Mockingbird/ACSSAA7
48、20.1681370.112112,15927.228.931.032.026.527.22057.076/19Roadrunner/ACSSAA760.16453190.076822,24531.733.936.538.330.331.72156.084/19Bluebird/ACSSAA840.16023190.096122,50842.145.549.651.740.742.12167.072/7Kiwi/ACSSAA720.1735370.115712,30029.030.833.034.128.229.02312.076/19Thrasher/ACSSAA760.17443190.0
49、81422,52435.638.141.043.034.135.62515.076/19Joree/ACSSAA760.18193190.084922,74538.741.444.646.837.138.7101.812/7Petrel/ACSSAA(HS)120.0921170.09211253.810.211.412.813.59.710.2110.812/7Minorca/ACSSAA(HS)120.0961170.09611276.311.112.413.914.710.611.1134.612/7Leghorn/ACSSAA(HS)120.1059170.10591335.513.515.016.917.812.913.5159.012/7Guinea/ACSSAA(HS)120.1151170.11511396.315.917.820.021.015.215.9176.912/7Dotterel/ACSSAA(HS)120.1214170.12141440.917.719.421.823.016.917.3190.812/7Dorking/ACSSAA(HS)120.1261170.12611475.719.120.923.524.818.318.7203.216/19Brahma/ACSSAA(HS)
