威勝DTSD341DSSD331-9D表英文說明書

USERMANUALDSSD331/DTSD341-9DTHREEPHASEELECTRONICMULTIFUNCTIONENERGYMETERContent1. Overview PAGEREFToc180620639\h61.1. Standard PAGEREFToc180620640\h61.2. WorkingTheory PAGEREFToc180620646\h61.3. NameplateDescription PAGEREFToc180620650\h61.4. TechnicalParameter PAGEREFToc180620653\h61.4.1.BasicTechnicalParameter PAGEREFToc180620654\h61.4.2.CalendarClock PAGEREFToc180620655\h71.4.3.PowerImpulse PAGEREFToc180620656\h71.4.4.OtherParameter PAGEREFToc180620657\h72. Glossary PAGEREFToc180620658\h82.1. Demandinterval PAGEREFToc180620659\h82.2. Maximumdemand PAGEREFToc180620661\h82.3. Slidingwindowtime PAGEREFToc180620663\h82.4. Peakon,Peak,Peakoff,Valley,LowValley,LowestValleytimezone PAGEREFToc180620665\h82.5. Harmonicvoltage(voltageDistortion) PAGEREFToc180620672\h82.6. Harmoniccurrent(currentDistortion) PAGEREFToc180620677\h82.7. TotalVoltageHarmonicDistortion(THDU) PAGEREFToc180620681\h82.8. TotalCurrentharmonicDistortion（THDi） PAGEREFToc180620685\h83. FunctionIntroduction PAGEREFToc180620688\h83.1. TOUenergymeasurement(sixtariffs,4quadrants) PAGEREFToc180620689\h83.2. Measurecurrent,voltage,frequencyandpower PAGEREFToc180620694\h93.3. CalculateM.D PAGEREFToc180620696\h93.4. Harmonicanalyze PAGEREFToc180620698\h93.5. Therecordof12monthsaccountdata PAGEREFToc180620700\h93.6. Therecordofloadcurve PAGEREFToc180620702\h93.7. MainandSubsidiaryTariffSetting PAGEREFToc180620713\h103.8. Therecordofevent PAGEREFToc180620715\h103.8.1Outage PAGEREFToc180620716\h103.8.2.LossPhase PAGEREFToc180620718\h103.8.3Lossvoltage PAGEREFToc180620723\h103.8.4.Noload PAGEREFToc180620731\h103.8.5.Losscurrent PAGEREFToc180620734\h103.8.6.ExceedVoltagelimit PAGEREFToc180620743\h113.8.7.Unbalancevoltage PAGEREFToc180620747\h113.8.8.Reverse PAGEREFToc180620751\h113.8.9.Exceeddemand PAGEREFToc180620753\h113.8.10Programming PAGEREFToc180620755\h.Poweron PAGEREFToc180620757\h.Reset PAGEREFToc180620759\hCleardemand PAGEREFToc180620761\h.Clearzero PAGEREFToc180620763\hCalibratedate PAGEREFToc180620765\hVoltageQualificationRate PAGEREFToc180620767\hxceedlimitofvoltageDistortion PAGEREFToc180620771\h.ThreePhaseFailureRecord PAGEREFToc180620774\h.CurrentReverseIndicator PAGEREFToc180620776\h113.8.11.Therecordofelectronicenergyquality PAGEREFToc180620778\h.Theunbalancerateofcurrent PAGEREFToc180620779\h.Theeventofhigh-neutralitycurrent PAGEREFToc180620783\h123.8.12Theeventofassistant PAGEREFToc180620788\hThelowerlimitofvoltage PAGEREFToc180620789\h.Theexceedlimitofcurrent PAGEREFToc180620793\h.Opencoverevents PAGEREFToc180620795\h123.9. FreezingEnergy PAGEREFToc180620797\h123.10. Impulseoutputandaccuracycheck PAGEREFToc180620800\h123.11. Othersignaloutput PAGEREFToc180620807\h123.12. DoubleRS-485communicationandopticalcommunication PAGEREFToc180620812\h123.13. ReadingmeterwhenPTshutdown PAGEREFToc180620821\h123.14. Battery PAGEREFToc180620823\h124. LCDDescription PAGEREFToc180620825\h134.1. LCDdisplayface PAGEREFToc180620826\h134.2. Descriptionofmaindisplayscreen. PAGEREFToc180620828\h134.3. Dendritemenu(referstoappendix1) PAGEREFToc180620830\h134.4. Descriptionofmenu,displayscreenandthemark. PAGEREFToc180620831\h134.4.1.Mainmenu PAGEREFToc180620832\h134.4.2.Submenuofrealtimedata PAGEREFToc180620835\h134.4.3.Submenuofrealtimedata PAGEREFToc180620853\h154.4.4.Submenuofmeterstatusword PAGEREFToc180620888\h174.4.5.Submenuofhistorydata PAGEREFToc180620900\h194.4.6.Submenuofthreephasetotalenergy PAGEREFToc180620903\h.4.3.2SubmenuofM.D.andthetime PAGEREFToc180620909\h194.4.8.Submenuofqueryparameter. PAGEREFToc180620917\h204.4.9.Othermenu PAGEREFToc180620919\h204.5. Alarminformationdefinition PAGEREFToc180620922\h205. Installationandconnection PAGEREFToc180620924\h205.1. installationdimensionandusage PAGEREFToc180620925\h205.2. mainterminalconnect PAGEREFToc180620928\h205.3. Auxiliaryterminalconnect PAGEREFToc180620938\h216. Operationintroduction PAGEREFToc180620939\h226.1. Theoperationofbutton(key) PAGEREFToc180620940\h226.2. RUN,EVENTandpowerimpulseoutput PAGEREFToc180620945\h236.3. parametersetting,clearzero,M.Dresetting PAGEREFToc180620949\h236.4. Changebattery PAGEREFToc180620957\h236.5. leadingsealing PAGEREFToc180620959\h237. Notice PAGEREFToc180620961\h237.1. Noticeinusingtime PAGEREFToc180620962\h237.2. TransportationandStorage PAGEREFToc180620967\h237.3. Guarantee PAGEREFToc180620971\h238. Maintance PAGEREFToc180620973\h238.1. Freeofcharge PAGEREFToc180620974\h238.2. FreeofDuty,onthiscondition,theservicemaytakecost. PAGEREFToc180620978\h23Appendix1:DSSD331/DTSD341-9Dmeterstructure PAGEREFToc180620992\h24Remark:ifyouknowmoreaboutdisplaycontent,youcansee4.LCDdisplayusermanual. PAGEREFToc180620993\h25Appendix2:Themanualofdisplaycode(DisplayIDcode) PAGEREFToc180620994\h25Remark:ifyouknowmoreaboutdisplaycontent,youcansee4.LCDdisplayusermanual. PAGEREFToc180620995\h26OverviewStandardDL/T614-2023《MultifunctionEnergyMeter》GB/T17883-2023《Class0.2Sand0.5SStaticACActiveEnergyMeter》GB/T17882-2023《Class2and3StaticACReactiveEnergymeter》DL/T645-2023《MultifunctionEnergyCommunicationProtocol》GB/T15543-1995《PowerQualityUnblanceRateofThreePhaseVoltage》WorkingTheoryDSSD331/DTSD341-9Dtype0.2sclassenergymeteruseslap-upmeterdesignproject:DSP+managementMCU,includeDSPandMCU.Theworkingtheoryisasfollow:the16bitsA/DconverterandDSPsamplethecurrentandvoltageandmakingrelativecalculation.TheDSPfinishtheparametermeasurement,energyconsumption,andharmonicanalysis,harmonicenergycalculation.AllthecalculationwillbesendtoMCUthroughthehighspeedcommunicationchannel,andtheMCUwillmanagethedisplay,dataanalysis,storage,communication,otherfunctionandparameter,theworkingtheoryisshowindiagram1.Diagram1DSSD331/DTSD341–9DWorkingTheoryNameplateDescriptionInfraredInfraredRunningLEDEventLEDLCDOpticImpulseOutputEscEnterDownDataBackupCard/(undercover)MeterNo.SealSealDiagram2DSSD331/DTSD341–9DNameplateDescriptionsTechnicalParameterBasicTechnicalParameterItemtechnologyparameterreferencevoltage3×57.7V/100V（threephasefourwire）3×63.5V/110V（threephasefourwire）3×100V（threephasethreewire）Referencecurrent0.3(1.2)A,1.5(6)A,1(2)A,1(6)AScopefrequency50（1±5％）Hz(default)VarietyrangeofvoltageanderrorPT:Un±30%Un,Warp≤0.5%Auxiliary:15~130v,warp≤0.5%Varietyrangeofcurrentanderror0.1A~6A,betterthan0.5%AccuracyclassTotalactive:0.2s;reactive:1sfundamentalwaveactive:0.5sWorktemperature-20℃～Utmostworktemperature-35℃～relativehumidity≤95%pickupcurrentActive:1‰Ib；Reactive:2‰Ib；Powerconsumption＜2W，10VAMTBF≥6×104hCalendarClockClockerror0.5s/dClockfrequency0.1HzInnerbatterylife*≥10yearNote’*’:Thebuilt-inBatteryisforpowersupplyofbuilt-inclockPowerImpulseMeterConstantMeterTypeUn(V)In(A)(imp/kWh)(imp/kvarh)3P3W3×1003×1(6)25000250003×1003×5(10)500050003P4W3×57.7/1003×0.3(1.2)1000001000003×1(6)25000250003×5(10)500050003×220/3803×1.5(6)20232023ImpulseParameterImpulseoutputwide(80±10)msMax.WorkingCurrent15mA（DC）Workvoltage5V～24V（DC）OtherParameterDatamemory1:maindatamemory:eachtariffenergy,demanddata,setparameter,multi-tariffdata,checkmeterparameter,Memory:32kbyte2:Loadcurvememory:berecorddataaboutloadcurve;Memory:4MbytesSupplytype1:PTsupply:voltagescope:0.8Un～1.2Un2:Auxiliarysupply:voltagescope:220(1±10%)VAC3:PTandAuxiliarybeautoswitchedDimensionL*W*H285mm×172mm×80mmNetweightAbout1.9kgGlossaryDemandintervalBemeasuredtimeintervalthatisconsecutive-equalforaveragepower.MaximumdemandMaximumvaluefordemandinaspecialperiodSlidingwindowtimeBemeasuredtimeintervalforM.Dbyrecurrence,thetimeintervalislessthandemandintervalPeakon,Peak,Peakoff,Valley,LowValley,LowestValleyPeakon:ThePeriodofMaximumLoadinadayPeak:ThePeriodofHighLodainadayPeakoff:ThePeriodofaverageloadinadayValley:ThePeriodofSmallLoadinadayLowValley:ThePeriodofSmallerLoadinadayLowestValley:TheperiodofMinimumLoadinadayHarmonicvoltage(voltageDistortion)UH:HarmonicVoltagen:HarmonictimesUh:thehtimesharmonicvoltageHarmoniccurrent(currentDistortion)IH:HarmonicCurrentn:HarmonictimesIh:thehtimesharmoniccurrentTotalVoltageHarmonicDistortion(THDU)UH:HarmonicvoltageU1:FundamentalwavevoltageTotalCurrentharmonicDistortion（THDi）IH=HarmoniccurrentI1=FundamentalwavecurrentFunctionIntroductionTOUenergymeasurement(sixtariffs,4quadrants)Measuretotalandtheenergyby6tariffsforimport/exportkWh,kvarhaswellasthekvarhof4quadrants,thedefinationof4quadrantsisdescribedindiagram3.Diagram3:Definationof4QuadrantsTherearetwotypesofreactivemeasurementmodeasfollowing:ImportReactive=ⅠQuadrant+ⅡQuadrantExportReactive=ⅢQuadrant+ⅣQuadrantImportReactive=ⅠQuadrant+ⅣQuadrantExportReactive=ⅢQuadrant+ⅡQuadrant.ExportReactive=ⅢQuadrant+ⅣQuadrantThesetwotypesofmeasurementmodecanbeprogramedbeforeusage.Theaccuracycalssforreactivemeasurementis0.2Sandcalss1.0forreactive,thereactiveaccuracyisinspectedbyfollowthestandard《Class1and2StaticACActiveEnergyMeter》Yearsection(Maximum14times):Theoneyearcanbedevidedintoseveraltimesectionwhichcanbeappliedwithdifferentschedule(Maximum12times)ofdayswitchtimes(Maximum14times),thetariffforeachdayswitchcanbeprogrammedbutthemaximumnumberis6tariffs.Therearespecialtimeinayearwhichcanbeprogrammedliketheweekendandholiday,customermaysetspecialdayswitchscheduleforthesedays.CurrenttariffcanbedisplayedandreviewedontheleftbuttomofLCD.Measurecurrent,voltage,frequencyandpowerMetercanmeasurevoltage¤tofeachphaseandeachelement,measuretotalandreachpahse&elementkW,kvar,powerfactorandfrequency.Thevoltagebetweenthevirtualcenterandlinefora3phase3wiremetercanbecalculated.Thedistinguishabilityforvoltage0.01V,forcurrentis0.001A,forkWandkvaris0.0001,forfrequencyis0.001Hz.Thepowerdirectioncanbeindicatedbydisplyingthesymble“P”,“+”,“-”,“Q”and“1~4”.CalculateM.DMetercanmeasuretotalM.D.ofimport/exportkW&kvar,4quadrantkvarwithtime,andtheM.D.canbemeasuredbyeachtariffsalso.Thedemandintervalisprogramablefrom5,10,15,30and60minutes,slidingtimeisprogramablefrom1,2,3and5minutes.HarmonicanalyzeDSPconvertthevoltageandcurrentsignalbyFFTin256points,thenthevalue,phaseof2~39timesharmonicvoltageandcurrentcanbecalculatedout,theaccuracyforharmonicvalueis2%(for2~21timesharmonic),thephaseaccuracyis+1~2degree.AllharmonicinformationcanbedisplayedonLCD,andtheharmonicdatastoragecanbereadoutthroughcommunicationport.Thereare6kindsofharmonicdatewillbestoredlike:ntimesharmonicvoltage,orginalphaseandtheharmonicvalue,ntimesharmoniccurrent,orginalphaseandtheharmonicvalue,totalaberrancerateofharmonicvoltage,totalaberrancerateofharmoniccurrent.TheharmonicvaluecanbedisplayonLCDinhistogramformat.Therecordof12monthsaccountdataMetercanrecordtotalandTOUkWh,kvarh,M.D.andM.Dtimeofcurrentmonthandlast1thto12thmonth.Thebillingtimeisclock00:00fromthefristdayforeachmonth,andthisbillingdatecanbeprogrammed.TherecordofloadcurveTherecordmodeofloadcurvecanbesetthroughanycommunicationportonmeter,thereare8kindsofdatacanberecord,usermayusethisdatetodrawcurveforanalyse.Definitionof8kindsofloadcurveTable1:definitionofloadcurveDataitemDatacontentMemory（byte）1A,B,Cphasevoltage,current,frequency202A,B,CPhasetotalactive,reactivepower,powerdirection263A,B,CPhasetotalpowerfactor84Importactive,Importreactive,Exportactive,Exportreactive165Totalenergyabout4quadrantreactive166Currentactivedemand,reactivedemand187Totalinput/outputfundamentalwaveenergy,harmonicenergy168TotalharmonicvoltageUhofeachphase,TotalharmoniccurrentIhofeachphase,TotalHarmonicvoltageDistortionTHDu,TotalharmoniccurrentDistortionTHDi30Thememorysizeofloadcurvedatastorageis4Mbytes.Theminimumrecordintervalforthesedatais1minute.Thedataitemstoberecordandtheintervalareprogrammable.Meterwillstarttorecordeachdataaccordingtothesettingfromthepre-set‘starttime’Calculateformula:T=T=therecordofcurveofloadtimelengthM=FLASHmemory(-9Dmetermemoryis4M)L=Indextablelength(-9Dmetermemoryis16.5bytes)Li=TotalbytesoftheiclassdataTi=thesettingtimeintervaloficlassdataMainandSubsidiaryTariffSettingTherearetwotariffsettingscanbeprogrammedinthemeter,currentactivetariffismaintariffandthesubsidiarytariffisbackuptariff.Theswitchtimeforthesetwosettingscanbeprogrammed.AndtherearedifferentsymblesonLCDtoindicatethemainandsubsidiarytariff,①formainand②forsubsidiary.Whenmeterisrunningunderseasontariff,thetwosymbolswillnotdisplayed.TherecordofeventOutageMetercanrecordlast10timesofoutagetime,startingtime,timesandaccumulativetotaloutagetime.LossPhaseWhenthepowerisonat3phases4wiresmode,ifthevoltageof1phaseislowerthanugandthecastingtimeislongerthantu,andthecurrentofthephaseislowerthan0.5%IB±0.05%IB,thephaseisPowerdown;WhenthevoltageofLoss-phasegoeshighertougandcastinglongerthantd,thephaseresumes.In3P3Wmode,ifthetotalvoltageofelementA&Clowerthan1.2timesofUn,Bphaselosephase.IfthevoltageofelementA&Cua－uc|≥u0,andcastinglongerthantu,andthecurrentoftheelementlowerthan0.5%Ib±0.05%Ib,Aphaselosephase.When|ua－uc|islowerthanu0,andthecastingtimelongerthantd,thephaseresume.Whenlossphaseistakingplace,happeningtime,lossphasetimesandtotaltimewillberecorded.Eventlightwillbeturnedonautomatically.Afterlossphase,endingtimewillberecordedandalarmwillbecancelled.ug:LimitedValueforlossphase,canbesetup(25V~Un，Un=57Vor100V),default30V.tu:Lossphasecastingtime,canbesetup(1min~99min),default1minute.td:Lossphaseresumecastingtime,canbesetup(1min~99min),default1minute.LossvoltageIfthevoltageofalossvoltageislowerthan78％Un±2V,thecurrentishigherthan0.5%Ib+0.05%Ib,andcastlongerthante,thisphaselossvoltage.Lossvoltagestart/endtime,meantimepowerandtotaltimewillberecorded,eventlightturnon.But,when3P3W,ifvoltageofelementA&CislowerthanUw,itisnotlossvoltage.Whenvoltageofthephaseresumesto85%Un±2V,andcastlongerthantf，timingstops,Lossvoltagestops.Themeterwillrecordtheendingtime,meantimepowerandcancelthealarm.Themeterhasthefunctiontorecordalllossvoltageeventsfromfirsttimeto10thtime,lossvoltagetimesandtotaltimes.Besides,themeterrecordedtheactiveenergyofimport/export,meteringfromthecommunicationport.Un：Limitedvalueforlossvoltage,canbesetup(20V~Un，Un=57Vor100V)，default57V;Uw：theuplimitofvoltagefailureinthreephasethreewiresystemcanbesetto20V~Un，Un=57Vor100V,thedefaultsettingis57V；teLossvoltagecastingtime,canbesetup(1min~99min),default1minute;tfLossvoltageresumingtime,canbesetup(1min~99min),default1minute.NoloadIn3P3Wmode,wheneachcurrentislowerthanI0，eitherthevoltageofAorCislowerthanI0，itisunload.TheEventlightturnon,meterrecordsstart/endtimeandtotaltime.I0:Limitedvalueforunload,canbesetup(20mA~99mA)，default30mA.LosscurrentWhenloading,ifthecurrentofaphaseIslowerthanIg，andlowerthan1/Rioftheaverageofthevoltageforanother2phases,andcastlongerthanti,1currentofthephasesishigherthanIk,thisphaselost.WhenthecurrentofthedisconnectedphaseishigherthanIg，andhigherthan1/Rioftheaverageofthevoltageforanother2phasesandcastlongerthantj,thislostcurrentresumed.Whendisconnected,themeterrecordthehappeningtimeandmeantimepower,turnontheeventlight.Whenresuming,itrecordtheresumingtimeandmeantimepower,andcancelalarm.Besidethis,themeterrecordimport/exportactiveenergymeasurementwhendisconnecting,meteringbythecommunicationport.Themeterhasfunctiontorecorddisconnectedcurrenttimesandtotaltime.Ig:LimitedvaluefordisconnectedcurrentNo1,canbesetup(20mA~99mA)，default60mA;Ik:LimitedvaluefordisconnectedcurrentNo2,canbesetup(20mA~99mA)，default60mA;Ri：thephasecurrentscalefactorcanbesetto2~50，thedefaultsettingis8；T(i):Castingtimewhendisconnectingcurrent,canbesetup(1min~99min),default1minute.T(j):Castingtimewhendisconnectingcurrentresuming,canbesetup(1min~99min),default1minute.ExceedVoltagelimitWhenanyvoltageofphaseishigherthan125%Uh,andcastingtime≥t(over),thisphaseexceedlimit;Whenthevoltageis120%Uhorless,andthecastingtime≥t(over),exceedlimitstops.Anditrecordthestart/endtime(Month,day,hourandminute)fromthefirsttimeto10thandthemeantimevoltage.Uh:Distinguishinglimitedvalueforexceedlimit,canbesetup(20V~Un,Un=57Vor100V),default57V;T(over):Castingtimewhenexceedlimit,canbesetup(1min~99min),default1minute.UnbalancevoltageWhenthevoltageofthethreephasesareunbalanced,andtheunbalancerateisbiggerthanthepresetlimit,meterwillrecordtheunbalanceevents.Whentheunbalancerateislowerthanthepresetlimit,theeventrecordingstopped.Metercanrecordlasttentimesevents.unbalancerateunbalancerate＝NegatviesequenceU2PositivesequenceU1×100％×100％(3P4W)unbalancerate＝Umax-Uminunbalancerate＝Umax-Umin(Umax+Umin)/2×100％×100％(3P3W)ReverseThemeterwillrecordstart/endtime(month,day,hourandminute)ofreversefrom1sttimeto10thandmeantimeactivepower.Thesymbol‘Alarm’willbedisplayedwhenthiseventhappened.ExceeddemandWhentheaveragedemandofdemandcycle≥theuplimitedofdemand(canbesetup,default1000W),itisexceeddemand.Themeterrecordthedemand,exceeddemandtime,andturnonalarmlight;whenthemaximumdemandlessthantheuplimited,exceeddemandstops,andthetimewillberecord.Metercanrecordlasttentimesevents.ProgrammingMeterwillrecordeachprogrammingtimefrom1sttimeto10thandtheprogrammingmark.PoweronMeterwillrecordeachpowerontimefrom1sttimeto10th(month,day,hourandminute).ResetMeterwillrecordeachresettimefrom1sttimeto10th(month,day,hourandminute).CleardemandMeterwillrecordeachcleardemandtimefrom1sttimeto10th(month,day,hourandminute),andmaximumdemandbeforecleardemand.ClearzeroMeterwillrecordeachclearzerotimefrom1sttimeto10th(month,day,hourandminute),andtheactiveenergybeforeclearzero.CalibratedateMeterwillrecordeachtimeofcalibratedatefrom1sttimeto10th(month,day,hourandminute),andtimebeforecalibratedate(month,day,hourandminute).VoltageQualificationRateTheupandlowervoltagelimitisprogrammabletocheckthevoltagequality,meterwillmeasuretheaveragevoltageofeveryminutethancomparewiththelimitvalue.ThetotalrunningtimeofphaseA/B/Cwhenthevoltageisinthecheckingrangeorexceedtheuplimitorlowerthanthelowerlimitwillberecord.Theup&lowerlimitofvoltagecheckingrangeisprogrammable;thedefaultsettingis0V;Theup&lowerlimitofvoltagequalifiedrangeisprogrammable;thedefaultsettingis0V;xceedlimitofvoltageDistortionWhenthetotalharmonicvoltage/currentislargethantheuplimit(programmable,thedefaultvoltagesettingis10Vandthecurrentis6A)theaberrationeventishappened,andmeterwillrecordthiseventwithtime;whenitvoltage/currentcomebackandlowerthanthelimit,theeventfinished,andmeterwillrecordtheeventwithtime.Thelasttentimeeventswillberecord.ThreePhaseFailureRecordWhenthethreephasevoltagefailed,meterwillrecordthisevents,thestartandendtimeandcurrenttotalenergyvalue,meterwillmakealarmbyLEDlighting.Thevoltagefailureeventforeachphasewillnotrecordatthismoment.CurrentReverseIndicatorForthreephasefourwireconnection,whenanyonephasecurrentreversed,therelativesymbol(Ia,Ib,Ic)foreachphasewith‘-’willbediplayedonLCDTherecordofelectronicenergyqualityTheunbalancerateofcurrentWhenthecurrentofthethreephasesareunbalanced,andtheunbalancerateisbiggerthanthepresetlimit,meterwillrecordtheunbalanceevents.Whentheunbalancerateislowerthanthepresetlimit,theeventrecordingstopped.Metercanrecordlasttentimesevents.unbalancerateunbalancerate＝NegatviesequenceI2PositivesequenceI1×100％×100％(3P4W)UnbalancerateUnbalancerate＝Imax-Imin(Imax+Imin)/2×100％×100％(3P3W)Theeventofhigh-neutralitycurrentIn3phases4wiresmode,ifneutrallinecurrentI(0)≥Ioset，andcastingtime≥tIo，itishigh-neutralitycurrent.Theeventincludingthecurrentandeventstart/endtimewillberecorded.Alarmlightwillbeturnedon.WhenneutrallinecurrentI(0)＜0.9Ioset，andcasttime≥tIo,thishigh-neutralcurrentdisappear,alarmwillbecanceled,eventwillberecorded.Neutrallinecurrent:ia＋ib＋ic＋io＝0,ia,ib,ic,ioareinstantaneous.Ioset:High-neutralcurrentuplimit,canbesetup(1A~10A),default1A.tIo:Castingtimeofhigh-neutralcurrent,canbesetup(1minute~99minutes),default1minute.TheeventofassistantThelowerlimitofvoltageWhenthevoltageofanyphaseislowerthan80%U1,andthecastingtime≥tlow，itisthelowerlimitofvoltage;Whenvoltageis85%U1orhigherandcastingtime≥tlow,eventstops,theeventandtimewillberecorded.U1:Limitedvalueforlossvoltage,canbesetup(20V~Un,Un=57Vor100V),default57V.tlow:Lossvoltagecastingtime,canbesetup(1min~99min),default1minute.TheexceedlimitofcurrentWhenthecurrentofphaseishigherthancurrentuplimit(canbesetup,default6A),itistheexceedlimitofcurrent.Themeterrecords10timeseventandthetime.OpencovereventsMetercandetecttheeventsofopenmeterterminalcoverwithhappenedtimeoflasttentimes.FreezingEnergyUsermaysendcommondtoprogramthefreezingenergytime,energydata(import&exportkWh,kvarhoftotalandeachtariff)willbefreezedonthisclockanditcanbereadoutthroughcommunicationport.Thisoperationcanbeoperatedthreetimesamonth.Metercanrecordthelast15timesfreezingenergydatawithtime,andthesedatacanbereadout.ImpulseoutputandaccuracycheckThemeterhasactiveenergyinput,activeenergyoutput,reactiveenergyinputandreactiveenergyoutput,4waypulseoutput,thepulsewidecanbesetup,default80ms.4waypulseeithercanbeconnectedwithRTUorusesforcheckingmeter.Therangeof4waypulseisasfollows:Activeenergyinput:7#(poleC),8#(poleE);Activeenergyoutput:9#(poleC),10#(pole