ASTM B502原版完整文件

命B502∕B502M-I(TI

CoWTmmASTMIniemaitonal

Designation:B502∕B502M-10v1

CoWTmmASTMIniemaitonal

Intsrnational

StandardSpecificationfor

Aluminum-CladSteelCoreWireforUseinOverhead

ElectricalAluminumConductorsForreferencedASTMstandards,visittheASTMwebsite,

.orcontactASTMCuitomerServicea【

service@

.ForAnnualB(Mk?fASTM

Thisstandardi$issuedunderthefixeddesignationB5O2∕B5O2M:thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor.inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.

Asuperscriptepsilon(&)indicatesaneditorialchangesincethelastrevisionorrcapproval.

ε,NOTE-DesignationwascorrectededitoriallyinOctober2OI3.

Scope

ThisSpeciGcationcoversround,aluminumYladsteelcorewirewithtwodesignationsoftensilestrengths,AW2(NormalStrergth)andAW3(HighStrength).

ThevaluesstatedineitherSlunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.

.1ForconductorsizesdesignatedbyAWG,therequirementsinSIunitshavebeennumericallyconvertedfromcorrespondingvaluesstatedorderivedininch-poundunits.ForconductorsizesdesignatedbySIunitsonly,therequirementsarestatedorderivedinSIunits.

ReferencedDocuments

Thefollowingdocumentsoftheissueineffectondateofmaterialpurchaseformapartofthisspecificationtotheextentreferencedherein.

ASTMStandards:Smndanisvo?unwinfoπnaιion.referιothestandard'<iDoeuiiieniSummarypageontheASTMwebsite.

B193TestMethodforResistivityofElectricalConductorMaterials

E8TestMethodsforTensionTestingofMetallicMaterials

OrderingInformation

Ordersformaterialunderthisspecificationshallincludethefollowinginformation;

Quantityofeachsize,

Wiresize:diameterininches(see6.1),

1ThisspeciHcutionisunderthejurisdictionofASTMCommitleeBOIonElectricalConductorsandisthedirectresponsibilityofSubcommitteeBO1.06onCompositeConductors.

CurrenteditionapprovedAprilI.2010.PublishedMay2010.Originallyapprovedin1970.Lastpreviouseditionapprovedin2007asB502-02(2007).DOI：10.152O∕BO5O2.BO5O2M-I0E01.

CoreWireStrength,AW2(NormalStrength)orAW3(HighStrength)(seeTable1andTable2),

Packagesize:(see17.1),

Specialpackagingandpackagemarkingifrequired(see16.1),and

Placeofinspectionifother(hanplaceofmanufacture(see14.1),

MaterialsandManufacture

Thebasemetalshallbesteelproducedbytheopen-hearth,electric-furnace,orbasic-oxygenprocessandshallbeofsuchcompositionthatthefinishedcladwireBhaIlhavethepropertiesandcharacteristicsprescribedinthisspecification.

ThealuminumusedforcladdingshallhaveapurityandquantitySuflicienitomeetthicknessandresistancerequirementsofthisspecification(see7.1and9.1).

TensileProperties

Req“力?〃ie〃As—Thealuminum-cladsteelcorewireshallconformtothetensilerequirementsprescribedinTableIandTable2.PurchasersOfcoreintendedforuseinconductorconstructionswithannealedaluminumwires,suchasACSS/AW3,ACSS∕TW∕AW3mayrequestthestrandedsteelcorebeComPIiantonlywithultimatetensilestrengthandmaywaivecompliancewiththe1%extensiontensilerequirement.ThisuseoftheultimatetensilerequirementasanalternatetotheI%extensionrequirementshallbebyagreementbetween(hepurchaserandproducerandshallbenotedonproductcompliancedocumentation.Incomputingstressat1%extensionandultimatetensilestrength,theactualdiameterofthefinishedwireshallbeused.

CopyrightOASTMInternational.100BarrHarborDrive.POBoxC700.WestConshohocken.PA19428-29S9.UnitedStates

ElongationTesr-Theelongationshallbedetenn?nedbyanextensometersuitableformeasuringelongationin10.0in.[250mm]andequippedwithavernierorotherinstrumentreadingto0.001in.[0.025mm].ItshallbeattachedtothetestspecimenataloadequaltotheinitialtensilestressshowninTable3andTable4.AtthisloadtheextensometershallbeadjustedιotheinitialsettingshowninTable3andTable4.Uponapplicationoffurtherload,thetensionshallbereadatanextensometerreadingof?.0%todetermineconformancewith

TABLE1TensileRequirementsforNormalStrength(AW2)ForACSR∕AW2,ACSR∕TW∕AW2andACSS∕AW2,ACSR∕TW∕AW2TypeConductors

NominalDiameter,in.[mm]

Stressal1.0%Extensionmin,psi(MPa)

UltimateTensileStrength,min,psi(MPa)

Elongation,min,%,10in.[250mm)

0.0770to0.1289

[1?95623?274],ln?∣

175000(1206)

195000(1344)

1.5

0.1290to0.1363

[3.275to3.477],i∏cl

1700∞(1172)

190000(1310)

1.5

0.1370to0.1443

[3.478to3.665),incl

165000(1137)

185000(1275)

1.5

0.1444to0.1549

[3.666to3.934],incl

160000{1103)

180000(1241)

1-5

0.1550to0.1623

[3.935to4.115]incl

160(XX)(1103)

175000(1206)

1.5

0.1621to0.1723

[4.116to4.392]incl

155000(1068)

170000(1172)

1.5

0.1730to0.181?

[4.393to4.620],incl

150000(1034)

1β5000(1137)

1.5

0.1820to0.188D

【4.621to4.775],incl

145000(1000)

160000(1103)

1.5

TABLE2TensileRequirementsforHighStrength(AW3)ForACSS∕AW3andACSSZTW∕AW3Typeconductors

NominalDiameter,in.[mm]

Stre&sal1.0%Extensionminip$i(MPa)

UltimatGTensileStrength,min.PSi(MPa)

Elongation,min,%i10in,[250mm]

0.0770to0.0893

[1.956to2.283].incl

190000(1310)

210000(1450)

1.5

Q.Q900to0.1199[2.284to3.045],incl

1δ5000(1280)

205000(1410)

1.5

0.1200to0.1393[3.046(O3.553].incl

180000(1240)

200000(1380)

1.5

0.1400to0.1883

[3,5Xto4.775),incl

170000(1170)

195000(1340)

1.5

TABLE3InitialSettingsforDeterminingat1%ExtensionforNormalStrength(AW2)

NominalDiaireter,in.[mm]

InitialStress,psi(MPa)

InitialSettingofExtensometer,%in./in.[cπ√cm]

0.0770to0.099θ

11800(81)

0.0005(0.05%extension)

[1.956to2.5371incl

0.1000to0.12SΘ

23500(162)

0.0010(0.10%extension)

[2.538t?3.299}inel0.1300to0.1880

35300(243)

0.0015(0.15%extension)

[3.300to4.7751incl

TABLE4InitialSettingsforDeterminingat1%Extensionfor

HighStrength(AW3)

NominalDiarreter,in：[mm]

InitialStress,psi(MPa)

InitialSettingofExtensometer,%i∩7in.[crτVcml

0.0770to0.0899~

~14000(100)~

0.0005(0.05%extension)

[1.96to2.283],incl0.0900to0.1199

28000(190)

0.0010(0.10%extension)

[2.284to3.0451incl0-1200to0.1880

[3.046to4.7751，incl

42000(290)

0,0015(0.15%extension)

(herequirementinTableIandTable2.Furtherelongationshallbeobservedwhileapplyingatensionloadtothespecimen.Theelongationthusdeterminedshallbenotlessthan1.5%inI0.0in.[250mm].Atestinwhichtheextensometerreadingislessthan1.5%shallbedisregardedifthefractureoccurslessthan

.0in.[25mm]fromeitherattachment.Inthiscase,anotherspecimenfromthesamereelorcoilshallbetested.

.3ThetensiontestsshallbemadeinaccordancewithTestMethodsE8.ThemethodfordeterminingelongationisdescribedintheProceduresSectionofTestMethodsE8.

DimensionsandPermissibleVariations

ThesizeshallbeexpressedbythewirediameterindecimalsofaninchtoIhenearest0.0001in.[0003mm].

WithintherangeofdiametersincludedinTable5thewireshallnotvaryfromthenominaldiameterbymorethantheamountsshowninthistabic.Incomputingpermissiblevariations,diametersshallberoundedto(henearest0.0001in.[0.003mm].

Ifaccessible,onemeasurementshallbetakenneareachendandonenearthemiddleofthecoilorreel.Inthecaseofreels,(hecenterandoneendmaynotbeaccessibleandtheprescribedmeasurementshallbetakenalongthelengthoftheaccessiblematerial.Ifanyoftheselectedcoilsorreelsfailtoconformtotherequirementsasprescribedin6.2,allcoilsorreelsshallbemeasuredinthemannerspecified.

ThicknessofAluminum

Thealuminumthicknessatanypointshallbenotlessthan10%ofthenominalwireradius.Measurementsshallbereadto(henearest0.001in.[0.03mm].Indeterminingtherequiredormeasuredthickness,fractionsof0.0005in.[0.013mm]orlessshallbedroppedandforfractionsofgreaterthan0.0005in.[0.013mm],thenextlarger0.001in.(0.003mm]shallbeused.

MeasurementsshallbemadebyusingsuitableelectricalindicatinginstrumentsoperatingOnthepermeameterprinciple,orbydirectmeasurement.Forrefereepurposes,directmeasurementshallbeusedtodeterminealuminumthicknessonspecimenstakenfromtheendsof(hecoils.

Density

Forthepurposeofcalculatingmass,crosssections,etc.,thedensityofthewireshallbetakenas0.2381lb∕in.3(6.590g∕cm3)at20℃.

Resistance

TheelectricalresistanceOfthewireshallbedeterminedbyresistancemeasurementsandmaximumallowableresistanceshallbebasedonthenominaldiameterofIhewireandtheresistivityvalueof5L0lΩ?em?l/ft[0.08480Ω?mm2∕m]at20℃.Electricalresistanceiscalculatedbythefollowingequations:

Resistance(Ω∕ft)=R/S (?)

TABLE5WireDiameterVariations

NominalDiameterlin.[mm]

PermissibleVariationsinNominalDiameter.

0.0770to0.0999

0.0015ih.[0.038mm]

[1.956to2.537],incl0.10∞to0.1880

[2?538to4.775],incl

1.5%

B502∕B502M-1Oe1

CoWTmmASTMIniemaitonal

where:

R=resistivity,r?cmi?/ft.and

S=nominaldiameter,mils

or,

Resistance(Ω∕m)=R/C (2)

where:

R=resistivity,r?mm2∕m,and

C=Iiomimalcrosssection,mm2

Whenresistancemeasurementsaremadeattemperaturesotherthan20℃.correctionsshallbebasedonatemperaturecoefficientofresistanceof0.0036∕9C(0.0020∕9F).

Teststodetermineconformancetotheresistivityof9.lshallbemadeinaccordancewithlestMethodB193.

Joints

Thereshallbenojointsofanykindmadeinthefinishedwire.

JointsmaybemadeintherodsorsemifinishedwirespriortodrawingtofinalSiZeThefinishedwireatsuchjointsshallmeettherequirementsof7.1.

Weldingequipmentandprocedureshallbesuchthati(canbedemonstratedthattheultimate(ensilestrengthofafinishedwirespecimencontainingtheweldedsectionshallbenotlessthanthestressat1.0%extensionasshowninTable1andTable2.

Aweldedsection,whereverencountered,shallnotberequiredtom≥etthestressat1%extension,elongation,andtorsiontests.

Finish

Thesurfaceofthewireshallbesmoothandfreefromimperfectionsnotconsistentwithgoodcommercialpractice.

NumberOfTests

OnetestspecimenshallbetakenfromeachlotoftencoilsascladZnddrawn,beforesplittingintoindividualcoils,andtestedtodeterminecompliancewithSections5,6,7,9,and13.

TorsionTest

ThewireshallwithstandWithOUtfracturenotlessthan20twistsinalengthequivalentto100timesthenominaldiameterof【hewire.Inthistest,thespecimenshallbegrippedatilsendsinvises,oneofwhichshallbefreetomovelongitudinallyduringthetest.Asmalltensileloadofapproxi

mately15Ib[67N]shallbeappliedtothespecimenduringtesting.Thespecimenshallbetwistedbyrotatingoneofthevisesatarateofapproximately15twists/mininthesamedirectionuntilfractureoccurs.Thenumberoftwistsshallbeindicatedbyacounterorothersuitabledevice.

Specimensaftertwistingtodestructionshallnotrevealanyseams,pits,slivers,orsurfaceimperfectionsofsufficientmagnitudetoindicateinherentdefectsorimperfectionsinthewire.Examinationofthewireatthebreakshallshownoseparationofthealuminumfromthesteel.

Inspection

Unlessotherwiseagreedupon,alltestsandinspectionsshallbemadeat(heplaceofmanufacture.Themanufacturershallaffordtheinspectorrepresentingthepurchaserallreasonablefacilitiesnecessarytoensurethatthematerialisbeingfurnishedinaccordancewiththisspecification.

Rejection

Ifthewirefailsinthefirsttesttomee?anyrequirementsofthisspecification,twoadditionaltestsfortheserequirementsshallbemadeonspecimensofwirefromthesamecoilorreel.Iffailureoccursineitherofthesetests,thelotofwireshallberejected.However,thelotmayberesubmittedforinspectionbytestingeverycoil?rreelfor(herequirementwhichcausedthespecimen(ofailandsortingoutthedefectivecoilsorreels.

ProductMarking

Aweather-resistanttagshallbeattachedtotheoutsideofeachcoilorreelshowingthemanufacturer'snameortrademarkwiththeapproximatelength,netmass,andnominalsizeofwire.Eachcoilshallalsohaveataginside(hewrappingshowingthemanufacturer'sname,thesize,approximatelength,andnetmass.Ifadditionalinformationisrequiredthisshallbearrangedwiththemanufactureratthetimeofpurchase.

PackagingandShipping

Packagesizeshallbeagreeduponbythemanufacturerandthepurchaserintheplacingofindividualpurchaseorders.

Thewireshallbeprotectedagainstdamageinordinarj,handlingandshipping.

Keywords

aluminum?cladsteelcorewireforaluminumconductors;a?uminum-e?adsteelreinforced;aluminum-e?adsteelsupported;ACSR;ACSR/TW;ACSS;ACSS