1、Designation: B 711 05Standard Specification forConcentric-Lay-Stranded Aluminum-Alloy Conductors, SteelReinforced (AACSR) (6201)1This standard is issued under the fixed designation B 711; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis
2、ion, 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 concentric-lay-stranded con-ductors made from round aluminum-alloy 6201-T8
3、1 hard: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.Al
4、uminum alloy 6201 corresponds to Unified Numbering System alloyA96201 in accordance with Practice E 527.1.2 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,
5、 if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on dateof mat
6、erial purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B 263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB 341/B 341M Specification for Aluminum-Coated (Alu-minized) Steel Core Wire for Aluminum Conductors, SteelReinforced (
7、ACSR/AZ)B 354 Terminology Relating to Uninsulated Metallic Elec-trical ConductorsB 398/B 398M Specification for Aluminum-Alloy 6201-T81 Wire for Electrical PurposesB 498/B 498M Specification for Zinc-Coated (Galvanized)Steel Core Wire for Aluminum Conductors, Steel Rein-forced (ACSR)B 500/B 500M Spe
8、cification for Metallic Coated StrandedSteel Core for Aluminum Conductors, Steel Reinforced(ACSR)B 502 Specification forAluminum-Clad Steel Core Wire forAluminum Conductors, Aluminum-Clad Steel ReinforcedB 606 Specification for High-Strength Zinc-Coated (Galva-nized) Steel Core Wire for Aluminum and
9、 Aluminum-Alloy Conductors, Steel ReinforcedB 802/B 802M Specification for Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for AluminumConductors, Steel Reinforced (ACSR)B 803 Specification for High-Strength Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminumand Aluminum-A
10、lloy Conductors, Steel ReinforcedE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 527 Practice for Numbering Metals and Alloys (UNS)2.3 American National Standards Institute Standard:H35.1M Alloy and Temper Designation Systems for Alu-minum32.4 Othe
11、r Standards:NBS Handbook 100Copper Wire Tables43. 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):3.1
12、.1.1 AACSR/GA-AACSRusing Class A zinc-coatedsteel wire (B 498/B 498M).3.1.1.2 AACSR/GB-AACSRusing Class B zinc-coatedsteel wire (B 498/B 498M).3.1.1.3 AACSR/GC-AACSRusing Class C zinc-coatedsteel wire (B 498/B 498M).1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Con
13、ductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved Mar. 1, 2005. Published March 2005. Originallyapproved in 1982. Last previous edition approved in 1999 as B 711 99.2For referenced ASTM standards, visit the ASTM website, www.astm.or
14、g, 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 Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from Natio
15、nal Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.1.4 AACSR/AZ-AACSRusing aluminum-coated (alu-minized) steel wire (B 341/B 341
16、M).3.1.1.5 AACSR/HS-AACSRusing extra high-strength steelwire (B 606).3.1.1.6 AACSR/AW-AACSRusing aluminum-clad steelwire (B 502).3.1.1.7 AACSR/MAusing Zn-5Al-MM coated steel corewire, coating ClassAin accordance with Specification B B802/B 802M.3.1.1.8 AACSR/MBusing Zn-5Al-MM coated steel corewire,
17、coating Class B in accordance with Specification B 802/B 802M.3.1.1.9 AACSR/MCusing Zn-5Al-MM coated steel corewire, coating Class C in accordance with Specification B 802/B 802M.3.1.1.10 AACSR/MCusing high-strength Zn-5Al-MMcoated steel core wire, coating Class A in accordance withSpecification B 8
18、03.4. 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 (Section 8 andTable 1);4.1.3 Number of wires, aluminum and steel;4.1.4 Type of steel core wire and, if
19、galvanized or Zn-5Al-MM coated, class (A, B, 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 required (see 9.2);4.1.7 Place of inspection (Section 15);4.1.8 Special package marking, if required (Secti
20、on 16);4.1.9 Package size (see 17.1); and4.1.10 Heavy wood lagging, if required (see 17.3).TABLE 1 Construction Requirements of Aluminum-Alloy Conductors, Steel Reinforced, Concentric-Lay-StrandedConductor Area, mm2StrandingAand Wire Diameter Diameter, mmRated StrengthBMassCAlloyNominalSteel TotalAl
21、loy SteelConductor Steel CoreNumber mm Number mm kN kg/km12501120102911352121184844.354.1219192.612.4747.845.313.012.44904394255381610009008173108197384843.893.6919192.332.2142.840.611.611.0391355340030608007101019090180054544.344.0919192.602.4539.036.813.012.236332230032664630560807171063154543.853
22、.6319192.312.1834.632.711.610.928625723652104500450635956350954543.433.2619192.061.9830.929.510.39.9022921518781706400400916549146530264.124.431972.473.4528.828.112.410.423720718181616355355815843641330263.884.171972.333.2427.226.411.69.7221118316141430315315725238736730263.663.931972.203.0625.624.9
23、11.09.1819016314381272280280654634532630263.453.70773.452.8824.223.410.48.6417114412861127250250584130829130263.263.50773.262.7222.822.29.788.1615612911491008224224523627626030263.083.31773.082.5721.621.09.247.711391181025901200200473224723230262.913.13772.912.4320.419.88.737.29124106915805180180422
24、922220930262.762.97772.762.3119.318.88.286.9311295.1823731160160382619818630262.612.80772.612.1818.317.77.836.5410685.6736646140140332317316330262.442.62772.442.0417.116.67.326.1287.475.0643565AOnly those strandings with a relatively high steel content are listed. Other strandings are available by a
25、greement between the purchaser and the producer.BRated strengths are for AACSR/GA and AACSR/MA conductors. Strengths were calculated in accordance with 9.1.CMass applies to AACSR/GA, AACSR/MA, and AACSR/AZ conductors.B7110525. Requirement for Wires5.1 Before stranding, the aluminum-alloy wire shall
26、meetthe requirements of Specification B 398/B 398M.5.2 Before stranding, the steel core wire shall meet therequirements of Specification B 341/B 341M, B 498/B 498M,B 502, B 606, B 802/B 802M,orB 803, whichever is appli-cable.5.3 Steel core supplied in a stranded construction shall meetthe requiremen
27、ts of Specification B 500/B 500M, if applicable.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 an
28、nealed for a distance of at least 150 mm on each 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 var
29、ious layers of wire in aconductor shall conform to Table 2 (Explanatory Note 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 su
30、ccessive layers.8. Construction8.1 The number and diameter of aluminum alloy and steelwires and the areas of cross section of aluminum 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 th
31、e strengths of the aluminum alloy and steel compo-nents, calculated as follows:9.1.1 The strength contribution of the aluminum-alloy wiresshall be the sum of the strengths of the 6201 wires, calculatedfrom their specified nominal wire diameter and the appropriatespecified minimum average tensile str
32、ength given in Specifi-cation B 398/B 398M, and multiplied by the aluminum-alloyRating Factor percentage for the conductor stranding as indi-cated in Table 3.9.1.2 The strength contribution of the steel core wires shallbe the sum of the strengths of the steel wires, calculated fromtheir specified no
33、minal wire diameter and the appropriatespecified ultimate tensile strength given in SpecificationsB 498/B 498M, B 341/B 341M, B 502, B 606, B 802/B 802M,or B 803, whichever is applicable, and multiplied by the steelRating Factor percentage for the conductor stranding as indi-cated in Table 3.9.1.3 T
34、he rated strengths of conductors calculated in accor-dance with 9.1 and 9.3 and using steel wires in accordance withSpecification B 498/B 498M or B 802/B 802M, Class A coat-ing are shown in Table 1.9.2 Tests for demonstration of rated strength of a conductorare not required by this specification but
35、 may be made if agreedupon between the manufacturer and the purchaser at the time ofplacing an order. If tested, the breaking strength of theconductor shall 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
36、 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 strength and breaking strength values shall berounded to three significant figures, in the final value only, inaccordance with the rounding method of Pra
37、ctice E29.TABLE 2 Lay Factors of Aluminum-Alloy Conductors Steel ReinforcedStrandingRatio of Length of Lay of a Layer to Nominal Outside Diameter of That LayerAluminum-Alloy Wire Layers Steel Wire LayersFirst (Outside) Second Third Fourth 12-Wire 6-WireMin PrefAMax Min Pref Max Min Max Min Max Min P
38、ref Max Min Pref Max84/19 10 11 13 10 13 16 10 17 10 17 16 20 24 18 25 3076/19 10 11 13 10 13 16 10 17 10 17 16 20 24 18 25 3054/19 10 11 13 10 13 16 10 17 . . 16 20 24 18 25 3054/7 10 11 13 10 13 16 10 17 . . . . . 18 25 3030/7 10 11 13 10 13 16 . . . . . . . 18 25 3026/7 10 11 13 10 13 16 . . . .
39、. . . 18 25 30APreferred (Pref).TABLE 3 Rating FactorsStrandingNumber of Wires Number of Layers Rating Factor, %Aluminum Alloy Steel Aluminum Alloy Steel Aluminum Alloy Steel12 7 1 1 96 9624 7 2 1 93 9626 7 2 1 93 9630 7 2 1 93 9642 7 3 1 91 9645 7 3 1 91 9648 7 3 1 91 9654 7 3 1 91 9672 7 4 1 90 96
40、16 19 1 2 96 9330 19 2 2 93 9354 19 3 2 91 9376 19 4 2 90 9384 19 4 2 90 93B71105310. Density10.1 For the purpose of calculating mass, cross sections,etc., the density of aluminum-alloy 6201 shall be taken as 2690kg/m3at 20C.10.2 For the purpose of calculating mass, cross sections,etc., the density
41、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 Resistance11.1 The mass and electrical resistance of a unit length ofstranded conduc
42、tor 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 ofthe conductor may be calculated (Explanatory Note 6).11.2 In the calculat
43、ion of the electrical resistance of acompleted conductor, the resistivity of coated steel core wiresshall be taken as 0.19157 V-mm2/m at 20C, and the resistivityof aluminum-clad steel core wires shall be taken as 0.0848V-mm2/m at 20C.12. Variation in Area12.1 The area of cross section of the aluminu
44、m-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 methods, except that in case of questionregarding area compliance, the meth
45、od 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-alloywir
46、es of a conductor may be determined by Test MethodB 263. In applying that method the increment in mass resultingfrom stranding may be the applicable value specified in 11.1 ormay be calculated from the measured component dimensionsof the sample under test. In case of question regarding areacomplianc
47、e, the actual mass increment due to stranding shallbe calculated.13. Finish13.1 The conductor shall be free of imperfections notconsistent with good commercial practice.14. Mechanical and Electrical Tests14.1 Tests for mechanical and electrical properties ofaluminum-alloy wires shall be made before
48、stranding (Ex-planatory Note 7).14.2 All aluminum-alloy wires composing the conductorsshall be capable of meeting the bending properties stated inSpecification B 398/B 398M after stranding. Routine produc-tion testing after stranding is not required.14.3 Routine production testing after stranding is
49、 not re-quired. However, when such tests are requested by the pur-chaser and agreed upon by the manufacturer at the time ofordering (or made for other reasons), aluminum wires removedfrom the completed conductor shall have tensile strengths ofnot less than 95 % of the minimum individual test tensilestrength specified for the wire before stranding. The electricalresistivity shall meet the minimum resistivity specified for wirebefore stranding. Elongation tests may be made for informationpurposes only and no minimum values are assigned (Explana-tory Note 7). The frequ
