1、Designation: B 401 04Standard Specification forCompact Round Concentric-Lay-Stranded AluminumConductors, Steel-Reinforced (ACSR/COMP)1This standard is issued under the fixed designation B 401; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers compact round concentric-lay-stranded conductors made from aluminum 1
3、350-H19 (extrahard) wires and round zinc-coated, aluminum-coated, oraluminum-clad steel core wires usually used in overhead lines.These conductors shall be constructed with one steel core wiresurrounded by one or more layers of helically-laid compactedor otherwise shaped aluminum wires (Explanatory
4、Note 1 andNote 2).1.2 Compact ACSR covered by this specification has fivetypes of steel core wire which are designated by abbreviationsas follows (Explanatory Note 2).1.2.1 ACSR/GA/COMPCompact ACSR using Class Azinc-coated steel wire,1.2.2 ACSR/GB/COMPCompact ACSR using Class Bzinc-coated steel wire
5、,1.2.3 ACSR/GC/COMPCompact ACSR using Class Czinc-coated steel wire,1.2.4 ACSR/AZ/COMPCompact ACSR using aluminum-coated (aluminized) steel wire, and1.2.5 ACSR/AW/COMPCompact ACSR using aluminum-clad steel wire.1.3 The SI values of density and resistivity are to beregarded as standard. For all other
6、 properties the inch-poundvalues are to be regarded as standard and the SI units may beapproximate.NOTE 1Prior to 1975, aluminum 1350 was designated as EC alumi-num.NOTE 2The aluminum and temper designations conform to ANSIH35.1. Aluminum 1350 corresponds to Unified Numbering SystemA91350 in accorda
7、nce with Practice E 527.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B 193 Test Method for Resistivity of Electrical ConductorMaterialsB 230 Specification for
8、 Aluminum 1350-H19 Wire for Elec-trical PurposesB 232 Specification for Concentric-Lay-Stranded Alumi-num Conductors, Coated Steel Reinforced (ACSR)B 263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB 341 Specification for Aluminum-Coated (Aluminized)Steel Core Wire for
9、 Aluminum Conductors, Steel-Reinforced (ACSR/AZ)B 354 Terminology Relating to Uninsulated Metallic Elec-trical ConductorsB 498 Specification for Zinc-Coated (Galvanized) SteelCore Wire for Aluminum Conductors, Steel Reinforced(ACSR)B 502 Specification for Aluminum-Clad Steel Core Wire forAluminum Co
10、nductors, Aluminum-Clad Steel ReinforcedB 802 Specification for Zinc-5 % Aluminum-MischmetalAlloy-Coated Steel Core Wire for Aluminum Conductors,Steel Reinforced (ACSR)E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 527 Practice for Numbering Meta
11、ls and Alloys (UNS)2.3 Other Documents:ANSI H35.1, American National Standard Alloy and Tem-per Designation Systems For Aluminum3NBS Handbook 100Copper Wire Tables of the NationalBureau of Standards43. Ordering Information3.1 Orders for material under this specification shall includethe following in
12、formation: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 Sept. 1, 2004. Published September 2004. Originallyapproved in 1963. Last previous edit
13、ion approved in 1999 as B 401 99.2For 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 page onthe ASTM website.3Available from American Nat
14、ional Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from National Technical Information Service (NTIS), U.S. Depart-ment of Commerce, 5285 Port Royal Rd., Springfield, VA 22161.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken,
15、 PA 19428-2959, United States.3.1.1 Quantity of each size and stranding (Table 1),3.1.2 Conductor size: circular-mil area or AWG (Section 6,and Table 1),3.1.3 Steel wire coating or aluminum-clad (see 11.3),3.1.4 Special tension test, if required (see 15.3),3.1.5 Place of inspection (Section 16), and
16、3.1.6 Packaging and Package Marking (Section 17).4. Joints4.1 Electric-butt welds, electric-butt, cold-upset welds, orcold-pressure welds in the individual round-drawn or shapedaluminum wires may be made during the stranding process. Noweld shall occur within 50 ft (15 m) of a weld in the same wireo
17、r in any other wire of the completed conductor.4.2 There shall be no joints of any kind made in the finishedcoated, or aluminum-clad steel wires.5. Lay5.1 The preferred lay of the aluminum wires of aluminumconductors, steel-reinforced, having a single wire steel coreand one layer of aluminum wires i
18、s 14 times the outsidediameter of the conductor but the lay shall be not less than 13nor more than 16 times that diameter.5.2 The preferred lay of the outside layer of aluminum wiresof aluminum conductors, steel-reinforced, having multiplelayers of aluminum wires is 12 times the outside diameter oft
19、he conductor but the lay shall be not less than 11 nor morethan 14 times that diameter.5.3 The preferred lay of the layer immediately beneath theoutside layer of aluminum wires of aluminum conductors,steel-reinforced, having multiple layers of aluminum wires is14 times the outside diameter of such l
20、ayer but the lay shall benot less than 11 nor more than 17.5 times that diameter.5.4 The direction of lay of the outside layer of aluminumwires shall be right hand.5.5 The direction of lay shall be reversed in successivelayers.6. Construction6.1 The diameter of the steel core wire, the number ofalum
21、inum wires, the aluminum cross-sectional area, the diam-eter and weight of the compact round concentric-lay-strandedaluminum conductors, steel-reinforced, shall be as shown inTable 1.7. Rated Strength of Conductor7.1 The rated strength of a completed conductor shall betaken as the aggregate strength
22、 of the aluminum and steelcomponents, calculated as follows: The strength contributionof the aluminum wires shall be taken as the percentage,according to the number of layers of aluminum wires, indicatedin Table 2, of the sum of the strengths of the 1350-H19 wires,calculated on the basis of the nomi
23、nal wire diameter for thecorresponding noncompacted construction given in Specifica-tion B 232 and the appropriate specified minimum averagetensile strength given in Specification B 230. The strengthcontribution of the steel core shall be taken as 96 % of thestrength of the steel wire calculated fro
24、m its specified nominaldiameter and the appropriate specified minimum stress at 1 %extension given in Specification B 341, B 498, B 502, orB 802, whichever is applicable.7.2 Rated strength and breaking strength values shall berounded to three significant figures, in the final value only, inaccordanc
25、e with Practice E 29.7.3 Rated strength of conductors are given in Table 3.8. Density8.1 For the purpose of calculating mass, mass per unitlength, cross sections, and so forth, the density of aluminum1350 shall be taken as 2705 kg/m3(0.0975 lb/in.3) at 20C.8.2 For the purpose of calculating mass, ma
26、ss per unitlength, cross sections, and so forth, the density of coated steelwire shall be taken as 7780 kg/m3(0.281 lb/in.3) at 20C.8.3 For the purpose of calculating mass, mass per unitlength, cross sections, and so forth, the density of aluminum-clad steel wire shall be taken as 6590 kg/m3(0.2381
27、lb/in.3)at20C.9. Mass and Electrical Resistance9.1 The mass and electrical resistance of a unit length ofstranded conductor are a function of the length of lay. Theapproximate mass and electrical resistance may be determinedTABLE 1 Construction Requirements for Compact Round Concentric-Lay-Stranded
28、Aluminum Conductors, Steel ReinforcedRequired Construction Nominal Mass for Conductors With:Conductor Size(Aluminum Wires)Number ofAluminumWiresSteel WireDiameterCompactConductorDiameterCoated SteelCore WireAluminum-CladSteel Core Wirecmil mm2AWG in. mm in. mm lb/1000 ft kg/km lb/1000 ft kg/km336 40
29、0 170.2 . 18 0.1367 3.47 0.628 15.95 364.8 543.3 357.2 531.1266 800 135.0 . 18 0.1217 3.09 0.559 14.20 289.1 430.8 283.1 421.1211 600 107.2 0000 6 0.1878 4.77 0.517 13.13 290.8 433.4 276.5 412.1167 800 85.1 000 6 0.1672 4.25 0.461 11.71 230.5 343.9.0 219.2 327.1133 100 67.3 00 6 0.1489 3.78 0.410 10
30、.41 182.8 272.3 173.8 258.9105 600 53.5 0 6 0.1327 3.37 0.365 9.27 145.2 216.4 138.1 205.883 690 42.4 1 6 0.1181 3.00 0.326 8.28 115.0 171.4 109.4 163.066 360 33.6 2 7 0.1299 3.30 0.298 7.57 106.6 158.6 99.8 148.466 360 33.6 2 6 0.1052 2.67 0.290 7.37 91.2 135.9 86.8 129.252 620 26.7 3 6 0.0937 2.38
31、 0.258 6.55 72.4 107.9 68.8 102.641 740 21.1 4 7 0.1029 2.61 0.236 5.99 67.0 99.7 62.7 93.441 740 21.2 4 6 0.0834 2.12 0.229 5.82 57.3 85.6 54.5 81.426 240 13.3 6 6 0.0661 1.68 0.182 4.62 36.0 53.7 . .B401042using an increment of 1.5 % for conductors composed of 1steel and 6 or 7 aluminum wires and
32、an increment of 2 % forconductors composed of 1 steel and 18 aluminum wires. Whengreater accuracy is desired, the increment based on the specificlay of the conductor may be calculated (Explanatory Note 4).9.2 In the calculation of the electrical resistance of acompleted conductor, coated steel wires
33、 may be included.9.3 The maximum electrical resistance of a unit length ofstranded conductor shall not exceed 102 % of the nominal dcresistance shown in Table 4 (Explanatory Note 6). When the dcresistance is measured at other than 20C, it is to be correctedby using the multiplying factor given in Ta
34、ble 5.9.4 For conductors to be used in covered or insulated wiresor cables dc resistance measurements may be used in lieu of themethod outlined in Section 12.10. Workmanship, Finish, and Appearance10.1 The conductor shall be clean and free of imperfectionsnot consistent with good commercial practice
35、.11. Requirements for Wires11.1 Before stranding and compacting, the round aluminumwire used shall conform to the requirements of SpecificationB 230.11.2 Aluminum wires shaped before stranding shall meetthe requirements of Specification B 230, except for shape,tensile and elongation requirements, an
36、d diameter tolerances.The minimum tensile and elongation requirements shall be96 % of those for round wires of the same nominal area,provided the completed conductor is capable of meeting therequirements of Section 7. The area tolerances for the shapedwires shall be such that the finished conductor
37、conforms toSection 12.11.3 Before stranding, the steel core wire used shall con-form to the requirements of Specification B 341, B 498, B 502,or B 802, whichever is applicable.12. Variation in Area12.1 The cross-sectional area of the aluminum in wires of acompact round ACSR shall be not less than 98
38、 % of thecross-sectional area as specified in column 1 of Table 1. Themanufacturer shall determine the cross-sectional area by TestMethod B 263. In applying this method, the increment inweight resulting from stranding may be the applicable valuespecified in 9.1 or may be calculated from the measured
39、dimensions of the sample under test. In case of questionregarding area compliance, the actual mass increment due tostranding shall be calculated.13. Variation in Diameter13.1 The diameter of the compact round ACSR shall varyby not more than +12 % from the diameter specified in Table1.14. Sampling14.
40、1 The aluminum cross-sectional area (Section 12) andthe conductor diameter (Section 13) shall be measured on asample of completed conductor. At least one sample shall betested for each size of conductor on each order of quantitiesfrom 5000 to 100 000 ft (1500 to 30 000 m) and oneadditional sample te
41、sted from each 100 000 ft thereafter.15. Mechanical and Electrical Tests15.1 Tests for mechanical and electrical properties of alu-minum wires composing the conductors shall be made beforestranding (Explanatory Note 5).15.2 Tests for the mechanical and electrical properties of thesteel core wire sha
42、ll be made before, but not after stranding,unless otherwise agreed by the manufacturer and the purchaseras provided in 15.3 (Explanatory Note 5).15.3 At the option of the purchaser, at the time of placingthe order, tension and elongation tests of wire before strandingmay be waived, and the completed
43、 conductor may be tested asa unit. The minimum breaking strength of conductors so testedshall be not less than the rated strength if failure occurs in thefree length at least 1 in. (25 mm) beyond the end of eithergripping device, or shall be not less than 95 % of the ratedstrength if failure occurs
44、inside, or within 1 in. of the end of,either gripping device. The free length between grips of the testspecimen shall be not less than 24 in. (600 mm), and care shallbe taken to ensure that the wires in the conductor are evenlygripped during the test (Explanatory Note 3).16. Inspection16.1 Unless ot
45、herwise specified in the contract or purchaseorder, the manufacturer shall be responsible for the perfor-mance of all inspection and test requirements specified.16.2 All inspections and tests shall be made at the place ofmanufacture unless otherwise agreed to between the manufac-turer and the purcha
46、ser at the time of purchase.16.3 The manufacturer shall afford the inspector represent-ing the purchaser all reasonable manufacturers facilities tosatisfy him that the material is being furnished in accordancewith this specification.17. Packaging and Package Marking17.1 Package sizes and kind of pac
47、kage, reels, or coils shallbe agreed upon between the manufacturer and the purchaser.17.2 The conductors shall be protected against damage inordinary handling and shipping.17.3 There shall be only one length of conductor on a reel.17.4 The net mass, length, size, kind of conductor, strand-ing, kind
48、of coating, class of zinc coating (if used), and anyother necessary identification shall be marked on a tag attachedto the end of the conductor inside the package. This sameinformation, together with the purchase order number, themanufacturers serial number (if any), and all shipping marksTABLE 2 St
49、rength Rating FactorsStranding Rating Factor, %Number of Wires Number of LayersAluminum SteelAluminum Steel Aluminum Steel61 1A96 9671A96 9618 1 2A93 96ACentral steel wire only: the 96 % Rating Factor is applied to the single steelwire core in the event it contains a weld (made prior to drawing).B401043and other information required by the purchaser shall appear onthe outside of the package.18. Keywords18.1 aluminum conductors; aluminum conductors; steel-reinforced; aluminum electrical conductor; compact roundstranded conductors; concentric-lay-stranded conductors; ele
