德国赛巴TDR实测海底电力电缆波形

德国赛巴TDR实测海底电力电缆波形第1页/共96页HVDC-Cable–200kmUndersea-cable

withafewjointsCablewith

numerousjointsHV-CabelØ120mm(c)SebaKMT,allrightsreserved第2页/共96页HVDC–Cable-200km:TDR–TeleflexVXSeaCable

openendSeaCable

withJoints(c)SebaKMT,allrightsreserved第3页/共96页HVDC-Cable–200km:TDR-JointsOverlandcable

withjoints(c)SebaKMT,allrightsreserved第4页/共96页TheTeleflexVXin19”FormatTeleflexVX,(c)SebaKMT2012,allrightsreserved5第5页/共96页ProRangeTeleflexVX,(c)SebaKMT2012,allrightsreserved6Distancedependingamplitudede-attenuation

asknownfromourTelecomunits.Important:

Thisisnotarampgain,butanexponentialde-attenuation!De-attenuation=offDe-attenuation=onCable:4x1km=4km;TypeRG58withopenend

WithactivatedProRangefunction,theendistmuchbettervisible第6页/共96页AdjustabletracethicknessTeleflexVX,(c)SebaKMT2012,allrightsreserved7Thesystemsbecomebetter,moreaccurateandhaveahigherresolution

Problem:Thetraceshowstoomanydetailsandthesedetailscan

beconfusing.Nowitispossibletoshowthetracewithathickerline,SameforprintingThetracethicknessisadjustablefrom1to9pixels.第7页/共96页19”InstallationversionsTeleflexVX,(c)SebaKMT2012,allrightsreserved8118304460 TeleflexVX-ClassicTeleflexVXin19“designassystemintegrationversionforClassicandothercomparablefaultlocationsystems.

(FornewSystemsandretrofitofexistingsystems)InclusiveadaptationsettotheClassicSystem15"SXGATFTDisplaywithCCFL-backlight,300cd/m²118308241 TeleflexVX-R30TeleflexVXin19“designassystemintegrationversionforR30andothercomparablefaultlocationsystems(FornewSystemsandretrofitofexistingsystems)InclusiveadaptationsettotheR30System

15"SXGATFTDisplaywithCCFL-backlight,300cd/m²第8页/共96页TeleflexVXPortableTeleflexVX,(c)SebaKMT2012,allrightsreserved9118308242 TFXVXPTeleflexVXPportablewithcaseAsStandAloneVersionforthedirectreflectionmeasurementorascombinationwithotherfaultlocationequipment.15"SXGATFTDisplaywithCCFL-backlight,300cd/m²Releasedate:Autumn2012第9页/共96页DataParameterTeleflexMXTeleflexVXMeasuringrange@80m/µs50m…160km20m…1280kmPulseamplitudeNotadjustablemax.55VAdjustablefrom30…160V0,1mby80m/µs0,1m@80m/µs,1,0cm@V/2<40m/µs„Real“sampleRateUpto100MHzUpto400MHzGain-42dB…+54dB,

-37…+37dBPulsewidth50ns…5µs20ns…10µsCompensation25,4Ω…1,6kΩandoff=∞8Ω…2kΩandoff=∞ARMTriggerTriggerlevelinfoursteps,250mVto2VAutomaticbyΔU-Trigger.DelaytimeNotadjustableAdjustablefrom

0…7msin256µsStepsDistancedependingde-attenuationNotavailableProRange0…100%,max.22dB)ARMslideNotavailable15ARM-SlideMeasurementsinoneshotCloserangeresolutionSmalllimitationsOptimisedinputcircuitMemoryFlash256MBforDataandProgram2GBforProgrammand

2GBforDataHighsafetybyseparatedhardware2GBinternalforrecoveryOperatingsystemLinuxKernel2.4LinuxKernel6.2InternalRecoveryNotavailableHighsafetybyRecoverysystemUSBV1.1V2.0ExternalcouplingviaISA-BUSviaEthernetDisplayStandard(analogue)17"TFTSXGA,CCFL-Backlight,300cd/m²KühlungCoolerfanforDisplayNocoolingfanrequiredRemoteDesktopf.OWTSAnbindungNotavailableAvailableTracethickness1PixelTracethicknessadjustableTeleflexVX,(c)SebaKMT2012,allrightsreserved10第10页/共96页11SebaKMT–Productrange2.ComprehensiveFaultLocationSystems:

EZGenerationSurgeflex–Portable,fullyautomaticfaultlocationsystemR30–Cablefaultlocationsystemupto400kV

DigiphonePlus–Excellentsurgewavereceiverforacousticandelectromagneticfaultpinpointing

MFM-10-SheathFaultLocationSystemTesting,PrelocationandPinpointingofsheathfaults

ESGNT–Earthfaultlocator

(c)SebaKMT,allrightsreserved第11页/共96页

Thenew“EZ”GenerationTheEZGeneration12第12页/共96页TheEZGeneration132ndGenerationEZ-RESTOREOVERDRIVE2ndGenerationEZ-THUMP2ndGenerationSMART-THUMPT3060

IRG2000BaurKillerNewGenerationSURGEFLEXT3090

T3050SuccessorSMARTE-TRAYOverwiewoftheE-TRAYProduktline

第13页/共96页EasiestOperationandHandlingWiththedevelopmentofthe“EZ”productline,SebaKMThasnowanewgenerationofportablefaultlocationsystem.ThemainfeaturesoftheseSystemsare: -EasiestOperation -Automaticdisplayoffaultdistance -Brightcolordisplay -NoTDRknowledgerequired -Notrainingrequired -AutomaticEnddetection -AllinoneunitOneuniqueFrontEndforallSystems!

14第14页/共96页UniqueFeaturesWiththenew,centralcontrolofthe„E-Tray“theelectronicsforallthesesystemsareinonesealed,independentenclosure.

Onetrayservesall.

Theuniquefeatureofthistrayisthelogicalprocess,

whichwasdevelopedtodeterminetheconditionofthetestobjectandtodecideautomaticallywhichisthemostreasonableapproachtocontinue,andtoprovideessentialdetailstotheoperator.TheE-Trayconsistsofabrilliant,sunreadable,

transflective5.7”colour,displayfordirectoutsideoperation,eveninverybrightSunlight.15第15页/共96页TransformerandJointrecognitionOneoftheoptionalfeaturesoftheEZTrayistheautomaticdetectionoftransformersorjoints.WiththeirknownpositionasaresultofGISordetailedrecording

itispossibletocorrelate

thesepositionswiththe

geographicallayouts,and

dependingonthequality

anddetailsofthisknowledge

toisolatethefaulteven

withoutpinpointing.

16第16页/共96页Thepurposeofthisunitisnotthefaultlocation(pinpointing),butjusttodeterminethefaultysectionbetweentwotransformersandtoisolateit.ModesofOperation: DCHipottesting Prelocation

SurgeEnergy: 500or1000JMax.Voltage: 12kVWeight: only34kg

SurgeSequence 10SecondsSupply: 12or120/230V

AutomaticTestSequenceAutomaticInterpretationanddetectionof:

EndofCable “OPEN”or“SHORT”

DistancetoFault Detectionanddisplayoftransformers

17EZ-Restore™/Overdrive17第17页/共96页3ModesofOperation: DCHipottesting Prelocation

PinpointingSurgeEnergy: 500JMax.Voltage: 12kVVersionMV

4kVVersionLVSurgeSequence: 10SecondsSupply: Batteryor120/230V

AutomaticTestSequence AutomaticInterpretationanddetectionof:

EndofCable “OPEN”or“SHORT”

DistancetoFault Weightonly34kgEZ-THUMP™18第18页/共96页

3ModesofOperation DCHipottesting5kV Prelocation ARMandICE

PinpointingSurgeEnergy 1000JMax.Voltage 2and4kV

SurgeSequence10Seconds BatteryOperationor120/230V AutomaticTestSequence AutomaticInterpretationanddetectionof

EndofCable “OPEN”or“SHORT”

DistancetoFault Weightonly110kg19Smart-THUMP™5kVSMART-THUMPTM519第19页/共96页

3ModesofOperation: DCHipottesting Prelocation ARMandICE

Pinpointing SurgeEnergy: 1150J Max.Voltage: 7,5and15kV

Weight: 110kg

Supply: InternalBatteryor120/230V

AutomaticTestSequence AutomaticInterpretationanddetectionof

EndofCable “OPEN”or“SHORT”

DistancetoFault

20Smart-THUMP15SMART-THUMPTM1520第20页/共96页DCHipottestingupto16kVwithBreakdownrecognition ISOTesting20k…10M Currentmeasurement Prelocation ARMandICE

Pinpointing

Sheathtestingandpinpointing SurgeEnergy 1500J Max.Voltage 8and16kV

IntegratedF-OhmSafetySystem

SurgeSequence10Seconds BatteryOperationor120/230V AutomaticTestSequence AutomaticInterpretationanddetectionof

EndofCable,OPEN,SHORT,DistancetoFault Weight140kg21ThenewSmart-THUMP1621第21页/共96页DetailsSmartThump1622820021145,SmartThump16DetailsforSystemwithoutBatteryandTruckmountVersionwillfollowSalesPrice: 22.500€OfficialAvailabilityandMarketingasusual

withthePowerInfoMail!第22页/共96页Versions23:ThereisnotonlythefullfeatureSystemWehavealwaystheoptionof:1.Portable2.PortablewithoutBatteryandInverterand3.TruckmountversionTheTruckMountVersionSystemwithoutBatteryandInverter第23页/共96页EZ-andSMARTTHUMPoperationForamoredetaileddemonstrationthere

istheEZTraydemosoftwarewhichdemonstratesAndexplainsallversionsandfunctionalities.24第24页/共96页Howistheinterpretationdone?Simplybyalogicalevaluation,basedoncommonfaultlocation

knowledgeandexperience.Example:OpenorinterruptAutomaticHipotTEST NOFlash-over

2.AutomaticTDRReferenceTrace CableEnd“OPEN”

3.AutomaticARM®Trace NOFlash-over

4.Basedontheseresults,thesoftwareconcludesthatcablemustbe

either“GOOD”orthatcablehas“burntintheclear”thereforeitis

suggestedtotheoperatortoconfirmthisresultbyatestfromthe

otherside,byshorteningtheotherend,orjusttoverifythelength!EZ-andSMARTTHUMPoperationbytheE-tray25第25页/共96页26

PortableFaultLocationSystem,consistingof:SurgeGeneratorSPG32with

0...4/8/16/32kV,1750J,-->continiousdutyDCTest,InternalARM®Filter,DecayandCurrentCoupler(ICE),PulsedSheathFaultMode0...5kV,ShortTermBurning(faultconditioning),TestVanmountedorruggedframewithwheels,ReflectometerTeleflexT30-EwithOne-Button-Operation,OperatorGuidingSoftwareSurgeflex32with1750(3500)Joules(c)SebaKMT,allrightsreserved第26页/共96页27HV-ModuleSPG32 typicallyequippedwithTDRTeleflexT30E (incl.DecayandImpulsecurrentmethod)DCTesting 0...32kVDCSurging 0…4kV;1200J 0…8kV;1750J 0...16kV;1750J

0...32kV;1750JSurgerate 3...10s,SinglepulseBurning 0...32kV;160mASheathfaultlocating 0...5kV;160mA

PhysicalDataofSystemConnectingcable 6m(standard)Mainssupply 230V;50/60Hz,2kVADimensions(WxHxD) 800x1280x800mmWeight 135kgPortable (142kgincl.4kVOption)

Surgeflex32:TechnicalData(c)SebaKMT,allrightsreserved第27页/共96页28One-Button-Operation10.4“VGAColourTFTHiBrite-

FullySunreadableDisplayQuickSteps®-ModewithautomaticTestProceduresStep-by-StepEasyModefor

OperatorGuidingSoftwarewithOnline-HelpExpert-ModewithaccesstoallParametersAutomaticFaultRecognitionand

DistanceIndicationAutomaticCableEndRecognitionHighResolutionduetospecialPulseShapeDisplayof3Traces(colorseparated)ARM®-ModeImpulseCurrentMethodDecayMethodTeleflexT30-E(c)SebaKMT,allrightsreserved第28页/共96页29Range 10m…50km(TransientMethods20m…100km)Pulsewidth 35nsto4µsSamplingrate 200MHzAccuracy ±0.1%ofrangeDisplay 10.4“VGAcolourTFTdisplayV/2 50m/µs...150m/µsModes DirectL1,L2

ComparisonL1,L2,Memory DifferenceL1,L2,Memory ARM®-Mode ImpulseCurrentMode,DecayModeMemory 100TracesInterface USBforPCandprinterOperatingtemperature -15°C...50°CDimensions(WxHxD) 360x160x270mmSupply InternalNiMhbattery,110/250VWeight 6kg

TeleflexT30-E:TechnicalData(c)SebaKMT,allrightsreserved第29页/共96页HVOperationfromonesingleunitonly(c)SebaKMT,allrightsreserved第30页/共96页31Faultlocationupto400kVR30theTestVansystemforanyapplicationDCTestingupto110kVOptionsupto150kVand400kVFaultlocationinallknowntechnologiesARMandICEupto50kVDecay110kVOptionalDecayMethodupto400kVFullyintegratedsafetyconceptComparablylowweightandvolumeLowpowerconsumptionR30themostpowerfulFaultLocationSystem(c)SebaKMT,allrightsreserved第31页/共96页digiPHONE+SystemThedigiPHONE+Systemconsistsof: theReceiver theSensor andtheHeadset(c)SebaKMT,allrightsreserved第32页/共96页Carefulhandling,nightworkandfilteringishistorynow:TodaywehaveanewdefinitionofsilenceTheinnovationinfaultpinpointingSeveralnew,innovativemethodsofthedigiPHONE+willensurethesilence

Thetechnologythatletsyouhearthefault–onlythefault! Notraffic! Nohighheels! Notalking! Nonoise!Youhearonlywhatyouwanttohear, -“THE”Fault!Yourearswilllikeit!digiPHONE+System(c)SebaKMT,allrightsreserved第33页/共96页Features/BenefitsHighestacousticqualityandexternalnoiseimmunityAutomaticVolumeMutewith„Bangprotection“Bright,suncapabledisplayEasiestOperationErgonomical,adjustabletelescopichandleDistancemeasurementinMillisecondsormetersSelectablevolumelimitationto84dB(A)Easytracingwithleft–rightindicationFaultdirectionindicationAutomaticadjustmentformagneticandacousticchannelWeatherproofIP65Sensor,betterIP54receiverHighgroundstabilityofthesensorupto45°New,highperformanceconnectors!(c)SebaKMT,allrightsreserved第34页/共96页SensorAdjustablehandleExchangeabletipsActiveElektronic–theevaluationhappenscompletelyinthesensor!Housing: Dualshelldiecastingwithtelescopichandle SoftrubberrimsforacousticshieldingDimensions: Diameter230mm(attheouterlip)Height: 140mmHandlelength: 450…750mmWeight: SensormitTeleskopstabca.2kgDynamicrange: acousticchannel>110dBDynamicrange: magneticchannel>110dBFrequencyrange: 100...1500Hz4Filtersettings: OFF 100…1500Hz Lowpass 100…400Hz Bandpass 300…500Hz Highpass 700…1500Hz(c)SebaKMT,allrightsreserved第35页/共96页ReceiverJogdialON/OFFManualMuteKeyThereceiverisonlyforthedisplayofthedatageneratedfromthesensorandthesignalprocessingofthesignalsfortheheadset.Dimensions(withrubberframe):65mmx225mmx100mm(HxWxD)Weight: app.1kg(incl.Batteries)Supply: 6piecesMignoncellsTypIECR6(Alkali-Mangan)Operationtime: @Mignoncellswith2500mAhcapacity:>10Std.Display: ColorTFT-320x240PixelAdjustment Selectablelimitationto84dB(A),VolumeAkusticGain: >120dB(c)SebaKMT,allrightsreserved第36页/共96页TracingAgreencablesymbolbeneaththesensorsymbolinthecenterofthedigiPHONE+displayshowsthesidepositionofthesensorinrelationtothecabletrace.Thisensuresautomatically,thattheuserremainswiththesensordirectlyontopofthecable,whichmakesthefaultlocationmoreaccuratebutalsoeasier.Weakfaultaremuchfasterdetectedandlocated.Acrossmeasurementisnotrequired,sincethesystemispositionedautomaticallyintheY-axisontopofthecable(c)SebaKMT,allrightsreserved第37页/共96页TheCompassThe„Compass“functionofthedigiPHONE+recognisesfromthedata,especiallyfromthedifferencetimemeasurement,iftheuserismovingtowardsthefault.Thisisindicatedbythearrowinthedisplay.TheuserfollowsthearrowandppoachesautomaticallythefaultpositionIfthedigiPHONE+detectsanincreaseofthedifferencetime,itmeans,thattheuserhaspassedthefaultalready.Inthiscaseabentarrowindicatesthisandrequeststheusertomovebackward.Beforethefault:ThenewvalueislowerthantheolddifferencevalueAfterthefault:Thenewvalueishigherthantheolddifferencevalue(c)SebaKMT,allrightsreserved第38页/共96页MFM10(c)SebaKMT,allrightsreserved第39页/共96页(c)SebaKMT,allrightsreserved40ExamplefromGreece第40页/共96页41BadworkmanshipasstandardproblemMoreandmoreunitsareinstalledbyun-experiencedcheap

servicecompaniesworldwide.MFM-10SheathfaultlocatorrequiredExample(c)SebaKMT,allrightsreserved第41页/共96页42MFM10(c)SebaKMT,allrightsreserved第42页/共96页DieOpticalappearance43ClearfrontendwithfewoperatingelelmentsAlsointhenewMFM10theeasygopriciplewithjogdialandaccordingopticalfeedbackofthejogdialmotionisrealisedIntuitiveeasiestoperationwithalargedisplayLessconnectioncablesSolidPelicase(c)SebaKMT,allrightsreserved第43页/共96页44MFM10-FeaturesTestvoltageupto10kVDC(bipolar!)Upto750mAcontinuouscurrentdrivingcapability(dependingonoutputvoltage(30mAat10kV)withincertainlimitsusefulasburnunit!FlickeraswellasignitionsoffaultsduringtestingarerecognizedanddisplayedWiderangemainssupply88to264VFaultlocatingusingthewellknownvoltagedropmethodimprovedaccuracyduetolow-noisepreamplifierLoggingisdonebyEasyprotEasiest,menuguidedoperationForprelocationtheMFM10checksforwrongconnectionsandinformstheoperatoraccordingly.EasyGorotaryknobsupplementedbyatouchscreen(c)SebaKMT,allrightsreserved第44页/共96页TheHandling45Easy,menuguidedoperationwithrotaryencoderandtouchscreenWeightreductionofmorethan30%comparedtotheMFM5-1bynewtechnologiesOnlyonesingleHVconnectioncable,thepermitstesting,prelocationandpinpointingwithoutreconnectingThetestofallconnectedtestleadyavoidsfalsemeasurementsandacceleratesthecompleteprocedureThemonitoringduringthetest,especiallyduringthevoltagerampupphasedetectsshorttimevoltageorcurrentchanges,whichmightindicateafaultanddisplaystheseafterthetesttotheoperator.Bythisway,alsomultiplefaultscanbedetectedwithoutapermanentobservationofthedisplay..PelicasewithTrolleyforeasiesttransportability(c)SebaKMT,allrightsreserved第45页/共96页Theoperationalspeed-Conclusion46Acompleteprelocationisjust15secondsEasiestoperationgOnlyoneHVconnectioncableBatteryoperationforatleast2hoursAllofthesefeaturespermitaveryfasttestandmeasurement

Cablemanufacturersaremoreandmoreinterestedincheckingthequalityoftheircontractorcompaniesdoingtheinstallationofthecables.

OurnewMFM-10isthedefinitelyagreattooltodothis.

(c)SebaKMT,allrightsreserved第46页/共96页47Data(c)SebaKMT,allrightsreserved第47页/共96页ESGNT–

Earthfaultlocator第48页/共96页ThenewESGNT第49页/共96页ReplacementoftheESG80AmodernMFM10requiresalsoamodernpinpointingtechnology

WiththenewESGNT,manyrequirementsfromthefieldandsaleswererealizedAutomaticzeroadjustmentAutomaticdetectionofthepulserateEasyhandlingwithoutpermanentadjustmentHighersensitivityLessmix-upbyclearcolorcodingEarthRodsBetterhandlingSaferbyinsulatedconstructionMoreforcefortheinsertionintotheground第50页/共96页TheeasymeasurementTargetwasmostcloseorientationontheconventionalpointerinstrumentQuasianaloguedisplaywiththenormalconventionaldisplayHistoryDisplay,theresponseofupto7pulses(ca.15seconds)isdisplayed第51页/共96页ThemeasurementprocedureAsvoltagegradientsinducedbythecurrentflowingbackfromthefaultpositionexistaroundtheearthingpointofthegenerator,themeasuremightbeelevated(pos.1)indicatesthedirectionofthefaultpositionatthispoint.Athalf-waypointbetweenthegeneratorandthefaultposition,thesignalstrengthreachesaminimum(pos.2)signalstrengthincreasesagain.Themaximumsignalstrengthismeasuredwhenoneoftheearthspikesisdirectlyabovethefault.Ifthefaultisexactlybetweenthetwoeartheindicatorunitdoesnotdisplayareading.Ifthefaultpositionispassedby,thepolaritychanges(pos.5)indicatorunitpointstotheotherdirection.第52页/共96页DisplayMessbildschirm

MenübildschirmeMeasuringDisplayMenueDisplay第53页/共96页DisplayBargraphforactualValuedisplayactualValueZoomLevelActiveFunctionsBatteryStatus第54页/共96页FeaturesHighersensitivity–Measuringrange0,01mV…200VAutomaticadaptationtothevoltageSuppressionofexternaldisturbances(50/60Hz,16⅔Hz,100/120Hz)EliminationofDCinfluencesAutomaticzeroadjustmentAutomaticdetectionofthepulserateEasierhandlingwithoutpermanentadjustmentMechanicallystrongandelectricallysafeconstructionoftheearthrodsDisplayunitIP54第55页/共96页TheEarthRodconceptCableholdersDividableRodsIsolatedupperpartSolidtipsColorcodingUniqueSebaKMTdesign第56页/共96页TheTransportcase第57页/共96页ThevehiclemountingAsforthedigiPHONE+theESGNThasanownvehicleholder.Generally,weoffereitherthecaseorthevehicleholder.Thereisnoobjectiontoofferboth第58页/共96页ScopeofDeliveryEarthfaultprobeESGNT1xDisplayESG-NT 1183059332xEarthrodsESG-NT 1183066921xTestlead2mred 8100031811xTestlead2mblack 8100031801xManualESGNT1xTransportBag 118302978 1xInserttransportbagESG 118306092第59页/共96页AvailabilityAvailablefromMay2012Versions: ESGNT CombiunitwithdigiPHONE+第60页/共96页61SebaKMT–Productrange4.VLF(VeryLowFrequency)CR(CosineRectangular)CableTestingsystems:Mostpowerfultestingapproach,inparticularfor(very)longcables

Waveformsimilarto50Hz–powerfrequency:

Strongincreaseduringzero-crossing

Fullyautomatic,easytousesystemTestmethodaccordingtointernationalstandards

(c)SebaKMT,allrightsreserved第61页/共96页(c)SebaKMT,allrightsreservedProductsVLFCRtechnology–PortablesolutionsIVLFCR-28 (899005936)4.6µF@28kV7.0µF@18kV11.0µF@12kVVLFCR-40-B (899004500)2.2µF@40kV2.5µF@35kV5.0µF@18kVVLFCR-60-B (899007186)VLFCR-60-B-OFFS (890025374) 0,8 µF@ 60kV 1,7 µF@ 35kV 3,0 µF@ 18kVVLFCR-60-P (899007187)VLF verylowfrequencyCR CosineRectangleB BasisP Plus(symmetrical)PZ Prüf-Zusatz(testaddon)CEN CentrixOFFS Offshore(groutedHVoutputline)第62页/共96页(c)SebaKMT,allrightsreservedProductsVLFCRtechnology–PortablesolutionsIIVLFCR-40-P (899004501)VLFCR-40-P-PZ-CEN (890022741)4,4µF@40kV5,0µF@35kV10,0µF@18kVVLFCR-60-P-OFFS (890025376)VLFCR-60-P-PZ-CEN (890022745) 1,6 µF@ 60kV 3,0 µF@ 35kV 5,5 µF@ 18kVVLF verylowfrequencyCR CosineRectangleB BasisP Plus(symmetrical)PZ Prüf-Zusatz(testaddon)CEN CentrixOFFS Offshore(groutedHVoutputline)第63页/共96页(c)SebaKMT,allrightsreservedProductsVLFCRtechnology–TestvansolutionsIVLFCR-54-PZ-CEN1 (890002585)VLFCR-54-PZ-CEN3 (890003040)VLFCR-54-PZ-CLASSIC (893016159)VLFCR-54-PZ-R30 (892473488)5,0µF@54kV8,0µF@36kV21,0µF@18kVVLFCR-80-B (890012125)VLFCR-80-B-PZ-CEN (890012123)2,0µF@80kV (45kV)3,0µF@60kV (36kV)4,5µF@40kV4,8µF@36kV9,9µF@20kV第64页/共96页(c)SebaKMT,allrightsreservedProductsVLFCRtechnology–TestvansolutionsIIVLFCR-60-HP (890022222)6,5µF@60kV10,3µF@38kVVLFCR-60-25µF (890025800)VLFCR-60-25µFtrailer (110000000)25,0µF@60kVHP:HighPower(6,5µF-symmetrical)25µF:ConEdversion(symmetrical)VLFCR-80-P (890012124)VLFCR-80-P-PZ-CEN (890012122)2,5µF@80kV4,5µF@60kV7,0µF@40kV7,7µF@36kV14µF@20kV第65页/共96页66ProductOverviewVLFSinustechnology

VLFSinus34kV:Testvoltage: 34kVTestcapacity0,1Hz: 0,6µFTestcapacity0,01Hz: 3,5µFTestfrequency: 0.1Hz(0.1Hz–0.01Hz) (automaticfrequencyadaption)NOTE:TheVLFSinus34hasbeendesignedfortheIEEEmarketformaintenancetestingcablesupto25kV.第66页/共96页670,7µF0.1Hz,30kVpeak(20kVRMS)5,0µF0.01Hz,30kVpeak(20kVRMS)Load-detectionRandCBreakdownrecognitionManualandautomaticfrequency-adaptionF-OhmTestmodes:Sinus,DC+,DC-,rectangularwave,pulsedDCvoltageforsheath-faultlocating.ProtocollingandupdateviaUSBProtectionclassIP20/IP67Robustcasing=PELI-Case1440

withintegratedtrolleyOption:tanDeltatestattachmentVLF-Sinseries

Technicaldetails30(34)kV第67页/共96页68VLF-Sinseries

Technicaldetails54kVTestvoltage: 54kVTestcapacity0,1Hz: 1µFTestcapacity0,01Hz: 5,0µFTestfrequency: 0.1Hz(0.1Hz–0.01Hz) (automaticfrequencyadaption)FirsttestvanshassuccessfullybeendeliveredtoEDFFrance,integratedinCentrix1and3-phase.第68页/共96页VertriebstagungBaunach2009,(c)SebaKMT2009,allrightsreserved.VLFTanDeltaSystemdescription/theoreticalexplanationsSebaKMT2012第69页/共96页VLFTanDelta

TanDeltabasicsAllMVandHVpowercableshaveahighvoltagelifeexpectancy;Duringthewholeservicelifetheyaresubjectedtothermal,electrical,mechanicalandenvironmentalstresses;Thesestresseswillchangethemorphologicalpropertiesoftheinsulation,sowillage/degradetheinsulationmaterial;Resultisadecreaseofthebreakdown-strengthoftheinsulation;Decreaseoftheinsulationbreakdown-strengthwillintheendleadtocablefailures;Toavoidfailuresintheinsulationthemeasurementofthedielectriclossescouldbeahelpfultool.第70页/共96页VLFTanDelta

TanDeltabasicsUICIRIδDielectriclossesaremainlydominatedbytheconductivelossesthatoccurintheinsulationmaterial,incaseofpaper-masscablesalsothepolarization-losseswillinfluencethedielectriclosses.TheDielectriclosses(TanDelta)canbecalculatedaccordingto:Visuallygivenby:Insimpleterms,theinsulationresistanceisinverselyproportionalwiththeTanDelta.第71页/共96页(c)SebaKMT2009,allrightsreserved.VLFTanDelta

TanDeltabasicsThemostimportantageingphenomenonforPILCcablesisthedegradationofcellulose,whatbasicallymeansthatmoisturecomesfreefromthepaperinsulationbecauseofthermalandchemicalprocesses.Thismoisturecontentwilldecreasetheinsulationresistance,resultinginanincreaseinTanDelta.ItisclearthatwithPILCcablesexternalwateringresswillalsoinfluencetheTanDelta!ForXLPEcablesthermalageingishardlymeasurablewiththeTanDeltamethod,theIRC-methodhoweveriscapableofdetectingthattypeofageing.Thef