LV25P中文资料

VoltageTransducerLV25-PFortheelectronicmeasurementofvoltages:DC,AC,pulsed...,withagalvanicisolationbetweentheprimarycircuit(highvoltage)andthesecondarycircuit(electroniccircuit).ElectricaldataIPNPrimarynominalr.m.s.current10mAIPPrimarycurrent,measuringrange0..±14mARMMeasuringresistanceRMminRMmaxwith±12V@±10mAmax30190Ω@±14mAmax30100Ωwith±15V@±10mAmax100350Ω@±14mAmax100190ΩISNSecondarynominalr.m.s.current25mAKNConversionratio2500:1000VCSupplyvoltage(±5%)±12..15VICCurrentconsumption10(@±15V)+ISmAVdR.m.s.voltageforACisolationtest1),50Hz,1mn2.5kVAccuracy-DynamicperformancedataXGOverallAccuracy@IPN,TA=25°C@±12..15V±0.9%@±15V(±5%)±0.8%eLLinearity0.2%TypMaxIOOffsetcurrent@IP=0,TA=25°C±0.15mAIOTThermaldriftofIO0°C..+25°C±0.06±0.25mA+25°C..+70°C±0.10±0.35mAtrResponsetime2)@90%ofVPmax40µsGeneraldataTAAmbientoperatingtemperature0..+70°CTSAmbientstoragetemperature-25..+85°CRPPrimarycoilresistance@TA=70°C250ΩRSSecondarycoilresistance@TA=70°C110ΩmMass22gStandards3)EN50178Notes:1)Betweenprimaryandsecondary2)R1=25kΩ(L/Rconstant,producedbytheresistanceandinductanceoftheprimarycircuit)3)AlistofcorrespondingtestsisavailableFeatures•Closedloop(compensated)voltagetransducerusingtheHalleffect•InsulatedplasticcaserecognizedaccordingtoUL94-V0.Principleofuse•Forvoltagemeasurements,acurrentproportionaltothemeasuredvoltagemustbepassedthroughanexternalresistorR1whichisselectedbytheuserandinstalledinserieswiththeprimarycircuitofthetransducer.Advantages•Excellentaccuracy•Verygoodlinearity•Lowthermaldrift•Lowresponsetime•Highbandwidth•Highimmunitytoexternalinterference•Lowdisturbanceincommonmode.Applications•ACvariablespeeddrivesandservomotordrives•StaticconvertersforDCmotordrives•Batterysuppliedapplications•UninterruptiblePowerSupplies(UPS)•Powersuppliesforweldingapplications.981125/14IPN=10mAVPN=10..500VLEMComponents(inmm.1mm=0.0394inch)Remarks•ISispositivewhenVPisappliedonterminal+HT.•Thisisastandardmodel.Fordifferentversions(supplyvoltages,turnsratios,unidirectionalmeasurements...),pleasecontactus.Mechanicalcharacteristics•Generaltolerance±0.2mm•Fastening&connectionofprimary2pins0.635x0.635mm•Fastening&connectionofsecondary3pins∅1mm•RecommendedPCBhole1.2mmSecondaryterminalsTerminal+:supplyvoltage+12..15VTerminalM:measureTerminal-:supplyvoltage-12..15VConnectionLEMreservestherighttocarryoutmodificationsonitstransducers,inordertoimprovethem,withoutpreviousnotice.InstructionsforuseofthevoltagetransducermodelLV25-PPrimaryresistorR1:thetransducer’soptimumaccuracyisobtainedatthenominalprimarycurrent.Asfaraspossible,R1shouldbecalculatedsothatthenominalvoltagetobemeasuredcorrespondstoaprimarycurrentof10mA.Example:VoltagetobemeasuredVPN=250Va)R1=25kΩ/2.5W,IP=10mAAccuracy=±0.8%ofVPN(@TA=+25°C)b)R1=50kΩ/1.25W,IP=5mAAccuracy=±1.6%ofVPN(@TA=+25°C)Operatingrange(recommended):takingintoaccounttheresistanceoftheprimarywindings(whichmustremainlowcomparedtoR1,inordertokeepthermaldeviationaslowaspossible)andtheisolation,thistransducerissuitableformeasuringnominalvoltagesfrom10to500V.Standard00YearWeekorN°SP..swissmadeBackview