Designation:D4566−14StandardTestMethodsforElectricalPerformancePropertiesofInsulationsandJacketsforTelecommunicationsWireandCable1ThisstandardisissuedunderthefixeddesignationD4566;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscoverproceduresforelectricaltestingofthermoplasticinsulationsandjacketsusedontele-communicationswireandcableandforthetestingofelectricalcharacteristicsofcompletedproducts.Todeterminetheproce-duretobeusedontheparticularinsulationorjacketcompound,orontheendproduct,referenceshouldbemadetothespecificationfortheproduct.1.2Thetestmethodsappearinthefollowingsectionsofthisstandard:TestMethodSectionsElectricalTestsofInsulation—In-Process4–8DCprooftest8Insulationdefectorfaultrate7Sparktest6ElectricalTestsofCompletedWireandCable9–51Attenuation24Attenuation,effectsduetoaging31Attenuation,effectsduetoelevatedtemperature29Attenuation,effectsduetohumidity30Attenuationtocrosstalkratio—farend(ACR-F)28Attenuationtocrosstalkratio—nearend(ACR-N)26Capacitancedeviation19Capacitancedifference20Capacitanceunbalance,Pair-to-ground(CUPG)22Capacitanceunbalance,Pair-to-pair(CUPP)21Capacitanceunbalance,Pair-to-supportwire23CharacteristicImpedance—Method1Propagationcon-stantandcapacitance47CharacteristicImpedance—Method2,Single-endedmeasurements48CharacteristicImpedance—Method3LeastSquaresFunctionFit49Coaxialcapacitance(capacitancetowater)17Conductorcontinuity11Conductorresistance(CR)13Conductorresistanceunbalance(CRUofpairs)15Continuityofothermetallicelements12Crossestest(continuitybetweenwiresofdifferentpairs)35Crosstalkloss,far-end27Crosstalkloss,near-end25TestMethodSectionsDCprooftest,Core-to-internalshield(screen)40DCprooftest,Core-to-shield38DCprooftest,Core-to-supportwire39DCprooftest,Internalshield(screen)-to-shield41DCp...
