韩国ROOTECH数字功率表Accura2750PAccura2750CAccura2750DAccura2750DCAccura2750PC功能，技术参数Accura2750P[C]Motor-UnitProtection[Control]Accura2750Pismountedatindividualmotor-unitofMCCanditsmainfunctionistoprotectthemotorbymeasuringthecurrentthatissuppliedtothecorrespondingmotor.Also,itmeasuresthevariouspowerfeatureofindividualmotor-unitfromthecurrentthroughbuilt-inCTandthevoltagetran***ittedfromAccura2700Mthroughcommunication.Accura2750PCincludesmotorcontrolfunctionalongwithmeasurementandprotectionfunctionofAccura2750P.CommunicationStructurewithAccura2700MthroughUnit-Socket(RS-485Communication)Receivesvoltagesamplingdatafromincoming-unitAccura2700MTran***itsthemeasurementinformationandmotoroperatinginformationofcorrespondingmotor-unittoAccura2700MRS-485baseddedicatedprotocol1port[UNIT-SOCKET]ConnectortypeRJ45connectorCommunicationcableEthernetcableCat5eFTP,STP,SFTPCommunicationcablelengthMaximum3mPowerMeasurementofMotor-UnitPowerCableMeasuresandanalyzesallsortsofpowerfeaturesfromvoltagesamplingdatatran***ittedfromAccura2700Mandcurrentsamplingdataofmotor-unitpowercablesensedbyitselfMeasurementItemCurrentRMS(phase/***erage,maximumphase/***erage),FundamentalRMS(phase/***erage)Harmonics(eachphase,1-31st),THD(eachphase,maximum),TDD(eachphase,maximum)Vectordiagram[Phasordiagram]Symmetricalcomponents(positive,negative,zero,maximum),unbalance(IEC,NEMA,maximum)Peakstartingcurrent(maximumof***erage),Peakrunningcurrent(maximumof***erage)Demand(phase/***erage),peakdemand(phase/***erage)CrestFactor(eachphase,maximum),K-factor(eachphase,maximum)GroundcurrentGroundcurrent[RMSbybuilt-inZCT](instantaneous,maximum)Residualgroundcurrent[RMSofsumcurrentof3phasecurrent](instantaneous,maximum)PowerActive,reactive,apparent(phase/total,maximumphase/total)Demandactivepower(phase/total),Peakdemandactivepower(phase/total)PowerfactorEachphasepowerfactor,totalpowerfactorActiveenergyTotal(Received,Delivered,Sum,Net)ReactiveenergyTotal(Received,Delivered,Sum,Net)ApparentenergyTotalProtectionFunctionofMotorCurrentmeasurementandanalysisfortheprotectionofindividualmotortowhichmotor-unitsuppliesthepowerProtectionElementsThermalprotectionTHR(49)OvercurrentprotectionOvercurrent(50TD),Jam(50LR-TD),Starterfailure(48)CurrentunbalanceprotectionUnbalance(46),Phaseopen(46),Negative-sequence(46)UndercurrentprotectionUndercurrent(37)GroundcurrentprotectionBuilt-inZCT(64),Sumof3phasecurrent(50G-TD)ControlFunctionofMotor[SupportedOnlyatAccura2750PC]Performscontrolfunction(start/stop)andmonitoringfunctionoftheoperatingstateofsinglephasemotorandthreephasemotorThecontrollogicisembeddedasdefaultcorrespondingtogeneralusagecondition,anditcanbemodifiedaccordingtouser’sspecialrequestbyusingControlLogicEditorStarterModeOverloadrelayOnlyperformstheprotectionfunctionasAccura2750PDirectstarterControlsstart/stopofmotortoone-wayReversingstarterControlsstart/stopofmotortotwo-way:forwardandreverse2-speedstarterControlsthenumberofmotorpoleforspeedcontrol2-stepstarterControlswiringmethodduringstartingtoreducestartingcurrentofmotorConnectionwithMotor-UnitHMIDisplayAccura2750D[C](RS-485Communication)RS-485baseddedicatedprotocol1port[DISPLAYAccura2750D/DC]ConnectortypeRJ45connectorCommunicationcableEthernetcableCat5eFTP[F/UTP]CommunicationcablelengthMaximum3.5mDigitalInput/OutputDigitalinputAccura2750P1channel[externalpowersupplyinput]Accura2750PC10channels[externalpowersupplyinput]DigitaloutputAccura2750PForm-A2channels,Form-C1channelAccura2750PCForm-A3channels,Form-C1channelTemperatureAccura2750P[C]temperaturemeasurement1PeaceControlPowerRatingvoltage(Us)110­240VAC50/60Hz,110­300VDCOperatingvoltagerange0.8xUs­1.1xUs)