1、Designation: B711 18Standard Specification forConcentric-Lay-Stranded Aluminum-Alloy Conductors, SteelReinforced (AACSR) (6201)1This standard is issued under the fixed designation B711; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, 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 concentric-lay-stranded con-ductors made from round aluminum-alloy 6201-T81 h
3、ard:solution heat treated, cold worked, and then artificially agedwire and round zinc-coated, Zn-5Al-MM coated, aluminum-coated, or aluminum-clad steel core wire for use as overheadelectric conductors (Explanatory Note 1 and Note 2).NOTE 1The alloy and temper designations conform to ANSI H35.1.Alumi
4、num alloy 6201 corresponds to Unified Numbering System alloyA96201 in accordance with Practice E527.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if
5、any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internati
6、onally 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 documents o
7、f the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electri-cal ConductorsB398/B398M Sp
8、ecification for Aluminum-Alloy 6201-T81and 6201-T83 Wire for Electrical PurposesB498/B498M 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 OverheadElectri
9、cal ConductorsB502 Specification for Aluminum-Clad Steel Core Wire forUse in Overhead Electrical Aluminum ConductorsB606 Specification for High-Strength Zinc-Coated (Galva-nized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel ReinforcedB802/B802M Specification for Zinc5 % Aluminum
10、-Mischmetal Alloy-Coated Steel Core Wire for AluminumConductors, Steel Reinforced (ACSR)B803 Specification for High-Strength Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use inOverhead Electrical ConductorsB957 Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated
11、 (Galvanized) Steel 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 ElectricalConductorsE29 Practice for Using Significant Digits in Test Data toDetermine
12、 Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.3 American National Standards Institute Standard:H35.1M Alloy and Temper Designation Systems for Alumi-num32.4 Other Standards:NBS Handbook 100Copper Wire Tables41This specification is
13、 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 March 1, 2018. Published March 2018. Originallyapproved in 1982. Last previous edition approved in 2013 as B711 13. DOI:
14、10.1520/B0711-18.2For 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 National Standards
15、Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United State
16、sThis international standard was developed in 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 Trad
17、e (TBT) Committee.13. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 AACSRcovered by this specification has five typesof coated steel and one type of aluminum-clad steel core wirewhich are designated by abbreviations as follows (ExplanatoryNote 1 and Note 9):3.1.1.1 AACSR/GA2-AA
18、CSRusing Class A zinc-coatedsteel wire in accordance with Specification B498/B498M.3.1.1.2 AACSR/GC2-AACSRusing Class C zinc-coatedsteel wire in accordance with Specification B498/B498M.3.1.1.3 AACSR/GA3-AACSRusing high-strength steelwire in accordance with Specification B606.3.1.1.4 AACSR/GA4-AACSR
19、using extra-high-strengthsteel wire in accordance with Specification B957.3.1.1.5 AACSR/GA5-AACSRusing ultra-high-strengthsteel wire in accordance with Specification B957.3.1.1.6 AACSR/AW2-AACSRusing aluminum-clad steelwire, normal strength in accordance with Specification B502.3.1.1.7 AACSR/AW3-AAC
20、SRusing aluminum-clad steelwire, high strength in accordance with Specification B502.3.1.1.8 AACSR/MA2using Zn-5Al-MM coated steel corewire, coating Class A in accordance with Specification B802/B802M.3.1.1.9 AACSR/MC2using Zn-5Al-MM coated steel corewire, coating Class C in accordance with Specific
21、ation B802/B802M.3.1.1.10 AACSR/MA3using high-strength Zn-5Al-MMcoated steel core wire, coating Class A in accordance withSpecification B803.3.1.1.11 AACSR/MA4using extra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordancewith Specification B958).3.1.1.12 AACSR/AZ-MA5using
22、ultra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordancewith Specification B958.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size and stranding,4.1.2 Conductor size, square millimetres
23、 (Section 8 andTable 1);4.1.3 Number of wires, aluminum and steel;4.1.4 Type of steel core wire and, if galvanized or Zn-5Al-MM coated, class (A or C) of coating (see 5.2);4.1.5 Direction of lay of outer layer of aluminum wires ifother than right-hand (see 7.2);4.1.6 Special tension test, if require
24、d (see 9.2);4.1.7 Place of inspection (Section 15);4.1.8 Special package marking, if required (Section 16);4.1.9 Package size (see 17.1); and4.1.10 Heavy wood lagging, if required (see 17.3).5. Requirement for Wires5.1 Before stranding, the aluminum-alloy wire shall meetthe requirements of Specifica
25、tion B398/B398M.5.2 Before stranding, the steel core wire shall meet therequirements of Specifications B498/B498M, B502, B606,B802/B802M, B803, B957 or B958, whichever is applicable.5.3 Steel core supplied in a stranded construction shall meetthe requirements of Specification B500/B500M, if applicab
26、le.6. Joints6.1 Cold-pressure welds, electric-butt welds, and electric-butt, cold-upset welds in the finished individual aluminumalloy wires composing the conductor may be made during thestranding process. Following welding, electric-butt welds shallbe annealed for a distance of at least 150 mm on e
27、ach side ofthe weld. No weld shall occur within 15 m of a weld in thesame wire or in any other wire of the completed conductor(Explanatory Note 3).6.2 There shall be no joints made in the finished steel wires.7. Lay Factors7.1 The length of lay in the various layers of aluminumalloy wire in a conduc
28、tor shall conform to Table 2 (ExplanatoryNote 4).7.2 The direction of lay of the outside layer of aluminum-alloy wires shall be right-hand unless otherwise specified in thepurchase order. The direction of lay of the aluminum alloy andsteel wires shall be reversed in successive layers.7.3 The length
29、of lay in the various layers of steel wire in aconductor shall conform to the requirements of SpecificationB500/B500M.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. Si
30、milarly, in a conductor having multiple layers of steelwires in the core, the lay ratio of a steel layer shall not begreater than the lay ratio of the steel layer immediately beneathit.8. Construction8.1 The number and diameter of aluminum alloy and steelwires and the areas of cross section of alumi
31、num alloy wiresshall conform to the requirements prescribed in Table 1.9. Rated Strength of Conductor9.1 The rated strength of a conductor shall be taken as thesum of the strengths of the aluminum alloy and steelcomponents, calculated as follows:9.1.1 The strength contribution of the aluminum-alloy
32、wiresshall be the sum of the strengths of the 6201 wires, calculatedfrom their specified nominal wire diameter and the appropriatespecified minimum average tensile strength given in Specifi-cation B398/B398M, and multiplied by the aluminum-alloyRating Factor percentage for the conductor stranding as
33、 indi-cated in Table 3.B711 1829.1.2 The strength contribution of the steel core wires shallbe the sum of the strengths of the steel wires, calculated fromtheir specified nominal wire diameter and the appropriatespecified ultimate tensile strength given in SpecificationsB498/B498M, B502, B606, B802/
34、B802M, B803, B957 orB958, whichever is applicable, and multiplied by the steelRating Factor percentage for the conductor stranding as indi-cated in Table 3.9.1.3 The rated strengths of conductors calculated in accor-dance with 9.1 and 9.3 and using steel wires in accordance withTABLE 1 Construction
35、Requirements of Aluminum-Alloy Conductors, Steel Reinforced, Concentric-Lay-StrandedConductor Area, mm2StrandingAand Wire Diameter Diameter, mmRated StrengthBMassCAlloyNominalSteel TotalAlloy SteelConductor Steel CoreNumber mm Number mm kN kg/km12501120102911352121184844.354.1219192.612.4747.845.313
36、.012.44894374255381610009008173108197384843.893.6919192.332.2142.840.611.611.0389353340030608007101019090180054544.344.0919192.602.4539.036.813.012.236132130032664630560807171063154543.853.6319192.312.1834.632.711.610.928525623652104500450635956350954543.433.2619192.061.9830.929.510.39.9022820818781
37、706400400916549146530264.124.431972.473.4528.828.112.410.423720618181616355355815843641330263.884.171972.333.2427.226.411.69.7221018216141430315315725238736730263.663.931972.203.0625.624.911.09.1819016214381272280280654634532630263.453.70773.452.8824.223.410.48.6417114412861127250250584130829130263.
38、263.50773.262.7222.822.29.788.1615212811491008224224523627626030263.083.31773.082.5721.621.09.247.711391151025901200200473224723230262.913.13772.912.4320.419.88.737.29124105915805180180422922220930262.762.97772.762.3119.318.88.286.93112195.0823731160160382619818630262.612.80772.612.1818.317.77.836.5
39、410085.5736646140140332317316330262.442.62772.442.0417.116.67.326.1287.474.9643565AOnly those strandings with a relatively high steel content are listed. Other strandings are available by agreement between the purchaser and the producer.BRated strengths are for AACSR/GA2 and AACSR/MA2 conductors. St
40、rengths were calculated in accordance with 9.1.CMass applies to AACSR/GA and AACSR/MA conductors, all strength grades.TABLE 2 Lay Factors of Aluminum-Alloy Conductors Steel ReinforcedAStrandingRatio of Length of Lay of a Layer to Nominal Outside Diameter of That LayerAluminum-Alloy Wire LayersFirst
41、(Outside) Second Third FourthMin Max Min Max Min Max Min Max84/19, 76/19 10 13 10 16 10 17 10 1742/7, 45/7, 48/7, 54/19 10 13 10 16 10 17 . .24/7, 26/7, 30/7 10 13 10 16 . . . .12/7, 16/19 10 14.5ALay factors of steel wire layers; see Specification B500/B500M.B711 183Specification B498/B498M or B802
42、/B802M, Class A coatingare shown in Table 1.9.2 Tests for demonstration of rated strength of a conductorare not required by this specification but may be made if agreedupon between the manufacturer and the purchaser at the time ofplacing an order. If tested, the breaking strength of theconductor sha
43、ll be not less than the rated strength if failureoccurs in the free length at least 25 mm beyond the end ofeither gripping device, or shall be not less than 95 % of therated strength if failure occurs inside, or within 25 mm of theend of, either gripping device (Explanatory Note 5).9.3 Rated strengt
44、h and breaking strength values shall berounded to three significant figures, in the final value only, inaccordance with the rounding method of Practice E29.10. Density10.1 For the purpose of calculating mass, cross sections,etc., the density of aluminum-alloy 6201 shall be taken as 2690kg/m3at 20C.1
45、0.2 For the purpose of calculating mass, cross sections,etc., the density of coated steel wire shall be taken as 7780kg/m3at 20C.10.3 For the purpose of calculating mass, cross sections,etc., the density of aluminum-clad steel wire shall be taken as6590 kg/m3at 20C.11. Mass and Electrical Resistance
46、11.1 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 determinedusing the standard increments shown in Table 4. When greateraccuracy is desired, the increment based on the specific lay o
47、fthe conductor may be calculated (Explanatory Note 6).11.2 In the calculation of the electrical resistance of acompleted conductor, the resistivity of coated steel core wiresshall be taken as 0.19157-mm2/m at 20C, and the resistivityof aluminum-clad steel core wires shall be taken as 0.0848-mm2/m at
48、 20C.12. Variation in Area12.1 The area of cross section of the aluminum-alloy wiresof a conductor shall be not less than 98 % of the area specified.Unless otherwise specified by the purchaser, the manufacturermay have the option of determining the cross-sectional area byeither of the following meth
49、ods, except that in case of questionregarding area compliance, the method of 12.1.2 shall be used:12.1.1 The area of cross section may be determined bycalculations from diameter measurements, expressed to threedecimal places, of the component aluminum wires at any pointwhen measured perpendicularly to their axes.12.1.2 The area of cross section of the aluminum-alloywires of a conductor may be determined by Test Method B263.In applying that method the increment in mass resulting fromstranding may be the applicable value specified in 11.1 or maybe calculated
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