ASTM_B_701_-_B_701M_-_13_2018.pdf

Designation:B701/B701M13(Reapproved 2018)Standard Specification forConcentric-Lay-Stranded Self-Damping AluminumConductors,Steel Reinforced(ACSR/SD)1This standard is issued under the fixed designation B701/B701M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers concentric-lay-stranded self-damping aluminum conductor,steel-reinforced(ACSR/SD),and its component wires for use as overhead electrical conduc-tors(Explanatory Notes 1 and 2).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 non-conformance with the specification.For conductor sizes designated by AWG or kcmil,the require-ments in SI units have been numerically converted fromcorresponding values stated or derived in inch-pound units.Forconductor sizes designated by SI units only,the requirementsare stated or derived in SI units.1.2.1 For density,resistivity,and temperature,the valuesstated in SI units are to be regarded as standard.NOTE1ACSR/SD is designed to control aeolian vibration by integraldamping.The conductors consist of a central core of a round steel wire orwires surrounded by two layers of trapezoidal aluminum 1350-H19 wiresor two layers of trapezoidal aluminum 1350-H19 wires and one layer ofround aluminum 1350-H19 wires(Fig.1).The trapezoidal-wire layers areseparated from each other and from the steel core by two small annulargaps that provide the conductors self-damping characteristics.The roundaluminum wires are in tight layer contact between themselves and theunderlying trapezoidal wire layer.Different strandings of the same size ofconductor are identified by type,which is the approximate ratio of steelarea to aluminum area,expressed in percent(Table 1 and Table 2).NOTE2The aluminum and temper designations conform to ANSIStandard H 35.1.Aluminum 1350 corresponds to UNS A91350 inaccordance with Practice E527.1.3 This standard does not purport to address all of thesafety concerns,if 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 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 documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B230/B230M Specification for Aluminum 1350H19 Wirefor Electrical PurposesB232/B232M Specification for Concentric-Lay-StrandedAluminum Conductors,Coated-Steel Reinforced(ACSR)B263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electri-cal ConductorsB498/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 OverheadElectrical ConductorsB502 Specification for Aluminum-Clad Steel Core Wire forUse in Overhead 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 ReinforcedB802/B802M Specification for Zinc5%Aluminum-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 in1This 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 March 1,2018.Published March 2018.Originallyapproved in 1981.Last previous edition approved in 2013 as B701/B701M 13.DOI:10.1520/B0701_B0701M-13R18.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standa