1、Designation: B779 03 (Reapproved 2009) B779 12Standard Specification forShaped Wire Compact Concentric-Lay-Stranded AluminumConductors, Steel-Reinforced (ACSR/TW)1This standard is issued under the fixed designation B779; the number immediately following the designation indicates the year oforiginal
2、adoption or, in the 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 compact concentric-lay-strande
3、d aluminum conductor, steel-reinforced (ACSR/TW)and its component wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2).1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are
4、 provided for information only and are not considered standard.NOTE 1ACSR/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). Theconductors consist of a central core of round steel wire(s) surrounded by two or more layers of t
5、rapezoidal aluminum 1350-H19 wires. Different strandingsof the same size of conductor are identified by type, which is the approximate ratio of steel area to aluminum area expressed in percent (Table 1, Table2 and Table 3). For the purpose of this specification, the sizes listed in Table 1 and Table
6、 2 are tabulated on the basis of the finished conductor havingan area or outside diameter equal to that of specific sizes of standard ACSR so as to facilitate conductor selection.NOTE 2The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to Unified Numberin
7、g System(UNS) A91350 in accordance with Practice E527.2. Referenced Documents2.1 ASTM Standards:2B230/B230M Specification for Aluminum 1350H19 Wire for Electrical PurposesB232/B232M Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)B263 Test Method for Dete
8、rmination of Cross-Sectional Area of Stranded ConductorsB341/B341M Specification for Aluminum-Coated (Aluminized) Steel Core Wire for Aluminum Conductors, Steel Reinforced(ACSR/AZ) (Withdrawn 2007)3B354 Terminology Relating to Uninsulated Metallic Electrical ConductorsB498/B498M Specification for Zi
9、nc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical ConductorsB500/B500M Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead ElectricalConductorsB502 Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Condu
10、ctorsB549 Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced for Use in OverheadElectrical ConductorsB606 Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-AlloyConductors, Steel ReinforcedB802/B802M Specific
11、ation for Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors,Steel Reinforced (ACSR)B803 Specification for High-Strength Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in OverheadElectrical ConductorsE29 Practice for Using Significant Digits in Test Da
12、ta to Determine Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductorsof Ligh
13、t Metals.Current edition approved April 1, 2009June 1, 2012. Published May 2009October 2012. Originally approved in 1987. Last previous edition approved in 20032009 asB779 03.B779 03 (2009). DOI: 10.1520/B0779-03R09.10.1520/B0779-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.o
14、rg, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what chan
15、ges have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the offic
16、ial document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 Other Documents:ANSI H35.1 American National Standard Alloy and Temper Designation Systems for Aluminum3NBS Handbook 100Copper Wire Tables of the National Bureau of Stan
17、dards43. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 ACSR/TW covered by this specification has five types of coated core wire and one type of aluminum-clad core wire whichare designated by abbreviations as follows (Explanatory Note 2 and Note 8):3.1.2 ACSR/TW/AWACSR/TW/AW2ACS
18、R/TW using aluminum-clad steel wire wire, normal strength (Specification B502).3.1.3 ACSR/TW/AZACSR/TW/AW3ACSR/TW using aluminum-coated (aluminized) steel wire aluminum-clad steel wire,high strength (Specification B341/B341MB502).3.1.4 ACSR/TW/GAACSR/TW/GA2ACSR/TW using Class A zinc-coated steel wir
19、e (Specification B498/B498M).3.1.5 ACSR/TW/GBACSR/TW/GC2ACSR/TW using Class BC zinc-coated steel wire (Specification B498/B498M).3.1.6 ACSR/TW/GCACSR/TW/GA3ACSR/TW using Class C high-strength, zinc-coated steel wire (Specification B498/B498MB606).3.1.7 ACSR/TW/HSACSR/TW using extra high-strength ste
20、el wire (Specification B606).3 Available from American National Standards Institute, 11 West 42nd Street, Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.10036,http:/www.ansi.org.B014 Available from National Technical Information Service, Service (NTIS), 5285 Port Royal Road,Rd., Spr
21、ingfield, VA 22161.22161, http:/www.ntis.gov.TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated SteelReinforced Size to Have Area Equal to ACSR, Class AAACSR/TW ConductorSizeSize and Stranding of ACSRwith Equal Area Number ofAluminumWiresNum
22、ber ofLayersSteel Core Stranding Mass perUnitLength,Alb/1000 ftRatedStrength,1000 lbBNominalOutsideDiameter, in.kcmil Type kcmil Stranding Number ofWires Diameter,in.336.4 6 336.4 18/1 14 2 1 0.1367 365 8.6 0.63477.0 13 477.0 24/7 18 2 7 0.0940 613 17.2 0.78477.0 16 477.0 26/7 18 2 7 0.1053 655 19.4
23、 0.79556.5 13 556.5 24/7 18 2 7 0.1015 715 20.0 0.84556.5 16 556.5 26/7 20 2 7 0.1138 765 22.6 0.85636.0 3 636.0 36/1 27 3 1 0.1329 646 13.5 0.85636.0 13 636.0 24/7 18 2 7 0.1085 816 22.9 0.89636.0 16 636.0 26/7 20 2 7 0.1216 874 25.4 0.91795.0 7 795.0 45/7 17 2 7 0.0886 892 21.0 0.96795.0 10 795.0
24、22/7 18 2 7 0.1108 975 25.9 0.98795.0 13 795.0 54/7 20 2 7 0.1213 1021 28.2 0.99795.0 16 795.0 26/7 20 2 7 0.1360 1092 31.8 1.01954.0 5 954.0 42/7 30 3 7 0.0837 1029 23.7 1.05954.0 7 954.0 45/7 32 3 7 0.0971 1075 25.9 1.06954.0 13 954.0 54/7 20 2 7 0.1329 1226 33.5 1.081033.5 5 1033.5 42/7 30 3 7 0.
25、0871 1115 25.7 1.091033.5 7 1033.5 45/7 32 3 7 0.1010 1165 28.1 1.101033.5 13 1033.5 54/7 21 2 7 0.1363 1327 36.3 1.131113.0 5 1113.0 42/7 30 3 7 0.0904 1201 27.5 1.131113.0 7 1113.0 45/7 33 3 7 0.1049 1254 30.3 1.141113.0 13 1113.0 54/19 38 3 19 0.0862 1429 39.1 1.191192.5 5 1192.5 42/7 30 3 7 0.09
26、36 1286 29.5 1.171192.5 7 1192.5 45/7 33 3 7 0.1085 1343 32.4 1.181192.5 13 1192.5 54/19 38 3 19 0.0892 1530 41.9 1.221272.0 5 1272.0 42/7 30 3 7 0.0967 1372 31.4 1.201272.0 7 1272.0 45/7 35 3 7 0.1121 1433 34.6 1.221272.0 13 1272.0 54/19 39 3 19 0.0921 1632 44.1 1.261351.5 7 1351.5 45/7 35 3 7 0.11
27、55 1522 36.7 1.261351.5 13 1351.5 54/19 39 3 19 0.0949 1734 46.8 1.301431.0 7 1431.0 45/7 36 3 7 0.1189 1613 38.9 1.291431.0 13 1431.0 54/19 39 3 19 0.0977 1836 49.6 1.341590.0 7 1590.0 45/7 36 3 7 0.1253 1792 42.2 1.361590.0 13 1590.0 54/19 42 3 19 0.1030 2040 55.1 1.411780.0 8 1780.0 84/19 37 3 19
28、 0.0874 2063 50.7 1.452156.0 8 2156.0 84/19 64 4 19 0.0961 2515 61.1 1.61A Mass per unit length is based on Class A zinc-coated steel.B Rated strengths were calculated in accordance with 9.1 using steel stresses at 1 % for Class A coating in accordance with Specification B498/B498M (1 kip = 1000lbf
29、= 4.448 kN).B779 122TABLE 2 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Reinforced Sized to Have Diameter Equal toACSR, Class AACode WordA ACSR/TW ConductorSize Size and Stranding of ACSRwith Equal Diameter Number ofAluminumWiresNumber
30、ofLayersSteel Core Stranding Massper UnitLength,Blb/1000 ftRatedStrength,1000 lbCNominalOutsideDiameter, in.DkcmilE Type kcmilE Stranding Number ofWires Diameter,in.DMonongahela/TW 405.1 6 336.4 18/1 14 2 1 0.1520 441 10.2 0.68Mohawk/TW 571.7 13 477.0 24/7 18 2 7 0.1030 735 20.6 0.85Calumet/TW 565.3
31、 16 477.0 26/7 20 2 7 0.1146 776 22.9 0.86Mystic/TW 666.6 13 556.5 24/7 20 2 7 0.1111 856 24.0 0.91Oswego/TW 664.8 16 556.5 26/7 20 2 7 0.1244 913 26.6 0.93Maumee/TW 768.2 13 636.0 24/7 20 2 7 0.1195 988 27.7 0.98Wabash/TW 762.8 16 636.0 26/7 20 2 7 0.1331 1047 30.5 0.99Nechako/TW 768.9 3 636.0 36/1
32、 27 3 1 0.1520 785 16.4 0.93Kettle/TW 957.2 7 795.0 45/7 32 3 7 0.0973 1079 26.0 1.06Fraser/TW 946.7 10 795.0 22/7 35 3 7 0.1154 1142 29.6 1.08Columbia/TW 966.2 13 795.0 54/7 21 2 7 0.1338 1241 34.0 1.09Suwannee/TW 959.6 16 795.0 26/7 22 2 7 0.1493 1318 37.0 1.11Cheyenne/TW 1168.1 5 954.0 42/7 30 3
33、7 0.0926 1260 28.9 1.16Genesee/TW 1158.0 7 954.0 45/7 33 3 7 0.1078 1308 31.6 1.17Hudson/TW 1158.4 13 954.0 54/7 25 2 7 0.1467 1489 39.6 1.20Catawba/TW 1272.0 5 1033.5 42/7 30 3 7 0.0967 1372 31.4 1.20Nelson/TW 1257.1 7 1033.5 45/7 35 3 7 0.1115 1417 34.2 1.21Yukon/TW 1233.6 13 1033.5 54/7 38 3 19 0
34、.0910 1586 42.9 1.25Truckee/TW 1372.5 5 1113.0 42/7 30 3 7 0.1004 1481 33.4 1.25Mackenzie/TW 1359.7 7 1113.0 45/7 36 3 7 0.1159 1530 36.9 1.26Thames/TW 1334.6 13 1113.0 54/19 39 3 19 0.0944 1713 46.3 1.29St. Croix/TW 1467.8 5 1192.5 42/7 33 3 7 0.1041 1585 35.8 1.29Miramichi/TW 1455.3 7 1192.5 45/7
35、36 3 7 0.1200 1640 39.2 1.30Merrimack/TW 1433.6 13 1192.5 54/19 39 3 19 0.0978 1840 49.7 1.34Platte/TW 1569.0 5 1272.0 42/7 33 3 7 0.1074 1693 38.2 1.33Potomac/TW 1557.4 7 1272.0 45/7 36 3 7 0.1241 1755 41.9 1.35Rio Grande/TW 1533.3 13 1272.0 54/19 39 3 19 0.1012 1968 53.2 1.38Schuylkill/TW 1657.4 7
36、 1351.5 45/7 36 3 7 0.1280 1868 44.0 1.39Pecos/TW 1622.0 13 1351.5 54/19 39 3 19 0.1064 2107 57.5 1.42Pee Dee/TW 1758.6 7 1431.0 45/7 37 3 7 0.1319 1982 46.7 1.43James/TW 1730.6 13 1431.0 54/19 39 3 19 0.1075 2221 59.4 1.47Athabaska/TW 1949.6 7 1590.0 45/7 42 3 7 0.1392 2199 51.9 1.50Cumberland/TW 1
37、926.9 13 1590.0 54/19 42 3 19 0.1133 2471 65.3 1.55Powder/TW 2153.8 8 1780.0 84/19 64 4 19 0.0961 2498 61.1 1.60Santee/TW 2627.3 8 2156.0 84/19 64 4 19 0.1062 3048 74.5 1.76ACode words shown in this column are obtained from “Publication 50, Code Words for Overhead Aluminum Electrical Conductors,” by
38、 the Aluminum Association. They are provided for information only.B Mass per unit length is based on Class A zinc-coated steel. To convert to kg/km, multiply the lb/1000 ft value x 1.4887.C Rated strength was calculated in accordance with 9.1 using steel stresses at 1 % for Class A coating in accord
39、ance with Specification B498/B498M (1 kip = 1000 lbf = 4.445 kN).DTo convert the diameter (inches) to mm, multiply the inch value x 25.4.ETo convert from kcmil to mm2 area, multiply the kcmil value x 5.067 x 10-4.B7791233.1.7 ACSR/TW/MAACSR/TW/MA2ACSR/TW using Class A zinc-5 % zinc-5 % aluminum-misc
40、hmetal alloy-coated steelcore wire (Specification B802/B802M).3.1.9 ACSR/TW/MBACSR/TW using Class B zinc-5 % aluminum-mischmetal alloy-coated steel core wire (SpecificationB802/B802M).3.1.10 ACSR/TW/MCACSR/TW using Class C zinc-5 % aluminum-mischmetal alloy-coated steel core wire (SpecificationB802/
41、B802M).3.1.8 ACSR/TW/MSACSR/TW/MA3ACSR/TW using high-strength zinc-5 % zinc-5 % mischmetal alloy-coated steel corewire (Specification B803).4. Ordering Information4.1 Orders for material under this specification shall include the following information:4.1.1 Quantity of each size,4.1.2 Conductor size
42、: kcmil area and diameter,4.1.3 Conductor type and number of wires, aluminum and steel (Tables 1-3),4.1.4 Type of steel core wire and if zinc or Zn-5 % -MM alloy coated, Class (A, B, and (A or C) of coating (see 5.2),4.1.5 Special tension test, if required (see 9.2),4.1.6 Place of inspection (Sectio
43、n 15),4.1.7 Package size and type (see 16.1),4.1.8 Special package markings, if required (Section 16), and4.1.9 Heavy wood lagging, if required (see 16.3).5. Requirement for Wires5.1 Before stranding, the trapezoidal aluminum wires (see Terminology B354) shall conform to the requirements ofSpecifica
44、tion B230/B230M except for shape and diameter tolerance. The tensile strength and elongation requirements oftrapezoidal wires shall be the same as for round wires of equal area. The area tolerances shall be such that the finished conductorconforms to Section 12.5.2 Before stranding, the steel core w
45、ire shall meet the requirements of Specifications B341/B341M, B498/B498M, B502,B606, B802/B802M, or B803, whichever is applicable.5.3 Following stranding, the steel core shall meet the requirements of Specification B500/B500M.6. Joints6.1 Electric-butt welds, electric-butt cold-upset welds, or cold-
46、pressure welds may be made in the individual aluminum wiresduring the stranding process. No weld shall occur within 50 ft (15 m) of any other weld in the completed conductor (ExplanatoryNote 3).6.2 There shall be no joints made in the finished steel wires.7. Lay7.1 The preferred lay of the outside l
47、ayer of aluminum wires of shaped wire compact aluminum conductors, steel-reinforced,having a steel core of 7 or 19 wires and having multiple layers of aluminum wires, is 11 times the outside diameter of the conductorbut the lay shall not be less than 10 nor more than 13 times that diameter (Explanat
48、ory Note 4).7.2 The preferred lay of the layer immediately beneath the outside layer of aluminum wires is 13 times the outside diameterof such layer but the lay shall be not less than 10 nor more than 16 times that diameter.7.3 The lay of the inner layers of aluminum wires shall be not less than 10
49、nor more than 17 times the outside diameter of suchlayer.7.4 The preferred lay of the 6-wire layer of 7- and 19-wire steel cores is 25 times the outside diameter of the 6-wire layer butthe lay shall be not less than 18 norsteel core shall be as set forth by Specification B500/B500Mmore than 30 times that diameterTABLE 3 Construction Requirements for Shaped Wire Compact Concentric-Lay Stranded Aluminum Conductors Coated, SteelReinforcedACSR/TW ConductorSize Number ofAluminum Wires Numberof Layers Steel Core Stranding Mass per UnitLength, lb/1000 ft Rated
