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Transformer winding/on-load tap-changer (OLTC) tester

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RMO-G MICRO OHMMETERS

TheMicroOhmmetersRMO-Gisdesignedformeasuringcontactresistancesofnon-inductivetestobjectsusedintheelectricpowerindustryorsimilarbranches.Itisemployedforresistancemeasurementduringmanufacturing,commissioningandtestingof:Powercircuitbreakers,Interrupters,Barinstallation,Cablesplices,Weldedjoints,Grounding
产品名称

RMO-TD TAP CHANGER ANALYZER & WINDING OHMMETERS

TheTapChangerAnalyzer&WindingOhmmeterRMO-TDisastand-aloneorPC-controlleddigitalinstrumentdesignedfordetailedanalysisofon-loadtapchangersandformeasuringresistancesofinductivetestobjectsusedintheelectricpowerindustryorsimilarindustries.Itisemployedforresistancemeasurementduringthemanufacturing,commissioningandtestingof:Transformers,On-loadtapchangers,De-energizedtapchangers,Generatorsandelectricalmotors,Highcurrentbusbarjoints,Cablesplices.TheRMO-TDisalsocapableofautomatictransformerdemagnetization.ItisrecommendedtoperformtransformerdemagnetizationafterallDCcurrenttesthavebeencompletedinordertoavoidproblemssuchaserroneousdiagnosticelectricalmeasurementsonatransformeroraninrushcurrentatthestart-upofthepowertransformerorincorrectoperationofprotectiverelaysduetomagnetizedCTcores.TheRMO-TDisalsousedtocreatetheautomaticresistance/temperaturemeasurementfortheHeatRuntesttogetherwiththeDV-Winsoftware.AnyusesoftheRMO-TDotherthantheonesmentionedaboveareconsideredimproperandwillinvalidatewarrantyclaims.
产品名称

TRT63 THREE-PHASE TRANSFORMER TURNS-RATIO TESTER

TheThree-phaseTransformerTurnsRatioTesterTRT63isdesignedspecificallyforperformingmeasurementsonpower,distributionandmeasurementtransformersasfollows: •Turnsratiomeasurement•Phaseshiftmeasurement•Excitationcurrentmeasurement Thesethreetestsareperformedatthesametime.TRT63appliestestvoltagetoHterminalsandmeasuresinducedvoltageatXterminals.Theratioofthesevoltagesisactuallytheturnsratioofatransformer.Atthesametime,TRT63measurestheexcitationcurrentattheHVtransformerside,aswellasthephaseanglebetweentheappliedtestvoltageandinducedvoltage. Therearethreewaystoperformthemeasurementsdependingonthetestobjectandatestvoltage.Ifthetestobjectisasingle-phasetransformer,asingle-phaseautotransformer,oracurrenttransformer,TRT63providesasingle-phasetestvoltagetoappropriateHterminalsandmeasurestheinducedvoltageatcorrespondingXterminals. Ifthetestobjectisathree-phasetransformerorathree-phaseautotransformer,TRT63canapplyeitherthreesingle-phasetestvoltagesinturnsoratruethree-phasetestvoltagetoHterminals.ThreeinducedvoltagesattheXterminalsaremeasured.
产品名称

TWA THREE-PHASE WINDING OHMMETERS & TAP CHANGER & WINDING ANALYZERS

ThedevicesfromtheTWAseriesarestand-aloneorPC-controlleddigitalinstrumentsdesignedforanalysisofon-loadtapchangersandformeasuringresistancesofinductiveandresistivetestobjectsusedintheelectricpowerindustryorsimilarindustries.Itisemployedforresistancemeasurementduringthemanufacturing,commissioningandtestingof:•Transformers,•On-loadtapchangers,•Generatorsandelectricalmotors,•Highcurrentbusbarjoints,•Cablesplices. TheTWA40Dmodelsupportssimultaneousthree-phasetapchangeranalysisandsimultaneousthree-phasewindingresistancemeasurementforwindingsconnectedinYNconfiguration.Both,theTWA40DandTWA25Kmodelsaredesignedforsix-windingresistancemeasurementofallsixtransformerwindingswithasingle-steptestleadconnection.TheTWAgeneratesatrueDCripplefreecurrent.Injectionofcurrentaswellasanautomaticdischargeofenergyfromthemagneticcircuitareautomaticallyregulated.TapchangeranalysisperformedbytheTWAincludesboth,thestaticandthedynamicresistancemeasurements. TheTWAisalsocapableofautomatictransformerdemagnetization.ItisrecommendedtoperformtransformerdemagnetizationafterallDCcurrenttestshavebeencompletedinordertoavoidproblemssuchaserroneouselectricalmeasurementsanddiagnosticsoraninrushcurrentatthestart-upofapowertransformerorincorrectoperationofprotectiverelaysduetomagnetizedCTcores.
产品名称

CAT60 II series CIRCUIT BREAKER ANALYZER & TIMER

TheCATisdesignedforconditionassessmentofHV/MVcircuitbreakersinelectricutilitiesandindustrialfacilities. Typicalapplicationsare:•Simultaneousmeasurementof6Maincontacts(2breaksperaphase)includingpre-insertionresistors(ifpresentinthecircuitbreaker)and6auxiliarycontacts, •Resistancemeasurementofthepre-insertionresistors(ifpresentinthecircuitbreaker),•Evaluationofsynchronizationbetweenthecircuitbreakerpoles,•Measurementofthecoilcurrents,simultaneouslyfor4coils,•Evaluatingthestateofthesubstation’sbatteriesbygraphicallyshowingthevoltagevalue,•Measurementofdisplacement,contactwipe,over-travel,rebound,dampingtimeandaveragevelocityofthebreaker’smovingparts,•“Firsttrip”test•Staticresistancemeasurement•Dynamicresistancemeasurement
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