Designation:B701/B701M−13(Reapproved2018)StandardSpecificationforConcentric-Lay-StrandedSelf-DampingAluminumConductors,SteelReinforced(ACSR/SD)1ThisstandardisissuedunderthefixeddesignationB701/B701M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversconcentric-lay-strandedself-dampingaluminumconductor,steel-reinforced(ACSR/SD),anditscomponentwiresforuseasoverheadelectricalconduc-tors(ExplanatoryNotes1and2).1.2Thevaluesstatedininch-poundorSIunitsaretoberegardedseparatelyasstandard.Eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththespecification.ForconductorsizesdesignatedbyAWGorkcmil,therequire-mentsinSIunitshavebeennumericallyconvertedfromcorrespondingvaluesstatedorderivedininch-poundunits.ForconductorsizesdesignatedbySIunitsonly,therequirementsarestatedorderivedinSIunits.1.2.1Fordensity,resistivity,andtemperature,thevaluesstatedinSIunitsaretoberegardedasstandard.NOTE1—ACSR/SDisdesignedtocontrolaeolianvibrationbyintegraldamping.Theconductorsconsistofacentralcoreofaroundsteelwireorwiressurroundedbytwolayersoftrapezoidalaluminum1350-H19wiresortwolayersoftrapezoidalaluminum1350-H19wiresandonelayerofroundaluminum1350-H19wires(Fig.1).Thetrapezoidal-wirelayersareseparatedfromeachotherandfromthesteelcorebytwosmallannulargapsthatprovidetheconductorsself-dampingcharacteristics.Theroundaluminumwiresareintightlayercontactbetweenthemselvesandtheunderlyingtrapezoidalwirelayer.Differentstrandingsofthesamesizeofconductorareidentifiedbytype,whichistheapproximateratioofsteelareatoaluminumarea,expressedinpercent(Table1andTable2).NOTE2—ThealuminumandtemperdesignationsconformtoANSIStandardH35.1.Aluminum1350correspondstoUNSA91350inaccordancewithPracticeE527.1.3Thisstandarddoesnotpurportto...
