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M

OTS80PB & OTS60PBOil Test Set

USER GUIDE

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G SAFETY WARNINGS

n SafetywarningsandprecautionsmustbereadandunderstoodbeforetheOTS80PB/OTS60PBisused.Theymust beobservedduringuse.

n TheOTS80PB/OTS60PBmustonlybeusedinthewayintendedandforthestatedpurposesdescribedbyMegger.

n TheOTS80PB/OTS60PBmust not beusedifanypartofitisdamaged.

n TheOTS80PB/OTS60PBmustbeproperlyearthed.Asupplementaryearthterminalisprovided.

n PositiontheOTS80PB/OTS60PBsothatpowercanbeeasilyremoved.

n TheOTS80PB/OTS60PBmust notbeusedinwetlocationsorwithrainfallingontheinstrument.

n TheOTS80PB/OTS60PBmustonlybeusedfortestingelectricalgradesofinsulatingliquids.Nootherobjectsor substancesshouldbeplacedinthetestchamber.

n TheOTS80PB/OTS60PBmustonlybeusedwithoneofMegger’sprecisiontestvesselsorVCM100Dcorrectlyfitted onthesupporthornsinthetestchamber.

n Replacementfusesmustbeofthecorrecttypeandrating.

n Ifbatteriesarefitted,the12VDCchargermustonlybepoweredfromanegativeearthedvehicle12VDCsource usingtheMeggersuppliedlead.

n CalibrationorrepairmustonlybecarriedoutbyaMeggerqualifiedrepairfacility.

n Thetestchambermustbekeptcleanandfreefromlintorotherfibres.

n TheOTS80PB/OTS60PBweighsbetween16kgand23kg.Careshouldbetakenwhenliftingtheinstrument.

n Itisprohibitedtoinsertforeignobjectsintoanygapontheinstrumentbeforeorduringatest.

n Unitmustbeusedinawellventilatedlocation.SmallquantitiesofOzonemaybecreatedafterprolongedtesting.

NOTETHE OTS80PB/60PB MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS.

IF THESE INSTRUMENTS ARE NOT USED IN THE MANNER SPECIFIED PROTECTION MAY BE IMPAIRED

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Symbols used on this instrument

G Caution:refertoaccompanyingnotes

F Dangerhighvoltage,riskofelectricalshock

DCvoltage

a ACvoltage

c EquipmentcomplieswithcurrentEUDirectives

u Earthterminal

f Fuse

USBterminal

Equipmentcomplieswith‘Ctick’requirements

Donotdisposeofinthewastestream

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ContentsSafetywarnings 2Symbolsusedonthisinstrument 3Generaldescription 5Featuresandbenefits 6Applications 6Instrumentcontrolsandindicators 7 Keypadandprinterpanel 7 Rearpanel 8Preparationsforuse 9 Gettingstarted 9 Supplyvoltage 9 Assembly 9 Instrumentsetupprocedure 9 Calibration 9 Testvesselmortisedstirrer 9 Transportationandstorage 9Operatinginstructions 10 Topleveltabs 10 Navigationandcharacterentry 11 Setfavouriteteststandards 12 Performingabreakdowntest 12 Testinprogress 12 Testresults 12Customtests 13 Basicmemoryfunctions 14 TransferresultstoUSBflashdrive 14 Printqualityandchangingpaper 15 Vesselandelectrodes 15 VCM100D/VCM80D 15 Testvesselmotorisedstirrer 15Preventivemaintenance 16 General 16 Cleaning 16 CareforOTSelectrodes 16 Newelectrodes 16 Electrodestorage 16 Cleaningoxidising/dirtyelectrodes 16Technicalspecifications 17 OTS80PB/60PBtechnicalspecification 17 VCM100D/VCM80Dvoltagemeterstechnicalspecification 18Storageandtransportation 18Accessoriesandequipment 19 Optional 19 Spares 19

Repairandwarranty 20

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General description

Megger’sOTS80PB/60PBOilTestSetsareportableliquiddielectricbreakdowntesters.Theyarefullyauto-matic,poweredbybattery/mainsandfacilitateaccuratebreakdownvoltagetestsonmineral,esterandsiliconinsulatingoils.Usedonsiteaswellasinthelaboratory,theprecisiontestvesselsetstheaccuracystandardfortheliquidinsulationtestindustry.Foreaseofusetheinstrumentscomespre-programmedwitha‘library’ofinternationalbreakdownteststandardsandtheabilitytocreatecustomtests.

TheOTS60PBweighslessthan17kgandtheOTS80PB21.5kgto23.5kgdependingonbatterychoice.Itcomescompletewithoptionalcarrybagandoptionalimpactresistanttransportcase.Thetransportcaseprovidesspacefortheunit,vesselandelectrodeset.

Theinstrumentishousedinametalcasewithmouldedendcapsthataccommodateconvenientcarryhandles.Thetestchamberisdesignedwithaneasy-cleansurfaceandprovidesadrainforspiltoilthroughaninternalpiperoutedtotherearoftheinstrument.Abeakerorsimilarcanbeusedforspillagecollection.Thetestareaiscoveredbyaplasticlidwithanelectricallyprotectiveinnerconductivelayerwhich,withthemetalcase,providesasafeequipotentialenclosureforhighvoltagetesting.

Thelidallowsinplentyofambientlightandusersareabletoviewthetestandwitnessstirringandthebreakdown.Thechamberlidisdualredundantsafetyprotectedwithmicro-switchestopreventaccidentalelectrification.

Theadvancedtestvesseldesignyieldshighlyaccurateandrepeatableresultspreviouslyonlyproducedbylaboratoryinstruments.Twostirringoptionsareavailable;aninternalmagneticbeanstirrerwhichisdroppedintotheoilandanoptionallidmountedimpellerthatconformstotheASTMD1816standard.Stirringduringbreakdowntestingisemployedtoproduceanhomogeneousdistributionofcontaminantswithintheoilandtofreeanycarbongeneratedbetweenelectrodesduringtesting.

Electrodegapissetbyprecisionadjustmentwheelsthatlockinpositionensuringthattheelectrodesdonotmoveduringabusydayinthefield.Itis,however,advisabletochecktheelectrodeconditionandgapdailybecauseitisacriticalparameterinbreakdownvoltagetesting.FlatanodisedAluminiumgapsettinggaugesaresuppliedinpopularsizestofacilitateelectrodegapsetting.Electrodesaredetachableandareavailableinshapesthatmeetallinternationalstandards,i.e.disk,sphericalandmushroom(VDE)electrodes.

TheOTS80PBislinepoweredwiththeoptionofinternalbatteries(eitherLeadAcid,NiMHornobattery)buttheOTS60PBonlyoffersNiMHbatteryornobatteryoption.Inadditiontolinepowercharging,a12VDCchargerfacilityisfactoryfittedwitheitherbatteryoption.Avehicle12VDCchargercableisprovidedtochargetheinstrument’sbatteries.Customerswhoorderoneofthebatterypackoptionsshouldbemindfuloftheneedtomaintainbatterycapacity.Asaminimum,leadacidbatteriesshouldbefullychargedevery3months.CustomerswhochosetheNiMHbatteryoptionareadvisedtooperatefrombatterywithoutlinepowerperiodicallytoensuremaximumbatterylife.

AselectionofinternationalbreakdowntestsarechosenfromalibraryofstandardsequencesandstartedfromtheuserfriendlymenuontheLCDdisplay.Thetopleveltestscreendisplaysallpertinenttestinformationtoensurethecorrectelectrodesareusedwiththespecifiedelectrodegapsetting.

ResultsareviewedonscreenandprintedoneitheranexternalUSBprinterortheinternalprinterfollowingatestresult.Intheeventofabreakdownnotoccurringbeforereachingthemaximumvoltage,theinstrumentwillreturnmaximumvoltage.Thisisasafetymeasuretoensuretheinstrumentisnotdrivenoveritsdesignedmaximumvoltage.

Theinstrumentautomaticallyturnsoffthedisplay15minutesaftercompletionofatestsequenceorlastuse.

Safetyfeaturesincorporatedinthedesignincludedualsafetymicro-switchesandzerovolttouchbar,thescreenedchamberlidandconvienentpowersupplyOn/Offswitch.Pressinganybuttonduringatestwillimmediatelyremovethehighvoltageandterminatethetest.Itisimportanttoearththisinstrumentusingthegroundconnectionattherearoftheinstrumenttoensuresafeoperation.

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Features and benefitsn Fullyautomaticbreakdowntesterwithtestvoltagesupto80kV/60kVdependingonmodeln Advanced400mloilvesselwithaccurateelectrodegapsettingandadjustmentlockingmechanismn Flatelectrodegapgaugesthatwillnotdamageelectrodesn Easycleantestchamberwithoildrainn Magneticbeadstirreroroptionallidmountedimpeller(conformingtoASTMD1816)n Directtripcontrolemployingvoltageandcurrentmeasurementn Rapidresponsetotrip(<10μs)n Automaticoiltemperaturemeasurementn IntuitiveuserinterfacewithbacklitQVGAcolourdisplay(visibleoutdoors)n SimpletransferoftestresultsviaUSBflashdriven OptionalVCM100D/VCM80Dvoltagecheckunitsmeasurevoltagedirectlyn Optionalcarrycasewithshoulderstrapn Optionaltransportcase

ApplicationsTheOTS80PB/60PBisusedfordeterminingthedielectricstrengthofhighvoltageinsulatingliquids,suchastheinsulatingoilsusedintransformers,switchgearandotherelectricalapparatus.Thedielectricbreakdownvoltageisameasureoftheinsulatingabilityofaliquidtowithstandelectricalstress.Contaminantssuchascellulosicfibres,conductingparticles,dirt,andwaterreducebreakdownvoltageofaninsulatingliquid.Alowresultindicatesthepresenceofoneormoreofthesecontaminants.

Thetestsetisfullyautomatic.Theoperatorhassimplytopreparethetestvessel,loaditwithsampleoil,placeitinthetestchamber,selecttheappropriatespecificationforthetestsandthenstartthetestsequence.Thetestsetautomaticallycarriesoutthesequenceoftestsasdefinedbythepre-selectednationalspecifications.Oiltestingspecifications,forwhichthesetsarepre-programmed,areasfollows:

n ASTMD1816-04

n ASTMD877A&B

n BSEN60156

n CEIEN60156

n IEC601561995-05

n IRAM2341-72

n JISC2101-99(M)&(S)

n PASEVEN60156

n UNEEN60156

n NFEN60156

n SABSEN60156

n VDE0370Part5

n AS1767.2.1

Acriticalfactorwithrespecttofieldtestingofoilisitstemperature,becausesamplesfromatransformertakenshortlyafterswitchoffcanbemanydegreeshotterthanequivalentroomtemperaturelaboratorytestsperformedat20ºCto23ºC.TheOTS80PB/60PBinstrumentsmeasuretheoiltemperatureduringthetestsothattemperaturecorrectioncanbeappliedtoresults.

NB:Certainstandardsrequirefieldteststobeperformedbetween20ºCand30ºC.

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Instrument controls and indicatorsKeypad and internal printer panelThecontrolpanel,illustratedbelow,islocatedtothefrontrightsideoftheinstrumentandcontainsaQVGAcolourscreen(1),navigationkeypadwith‘OK’(4)buttonanda‘TEST’(5)button.Theoperationisuserfriendlyanddrivenfromsixtoplevelwindows.Astart-upLED(2)isusedduringinstrumentinitialisation.Thelower,verticalsectionofthefrontpanelhousesanON/OFFpowerswitch(6)andaUSBTypeAinterfacesocket

Item Description

1 3.5inch,backlight,brightcolourQVGA display

2 On/offLED

3 ExternalpowerLED/icon

4 TEST’buttonwithassociatedredwarning LED

5 USBsocket 6 Navigationkeypadwith‘OK’selectbutton

Theinstrumentprinterpanel,shownbelow,housestheoptionalinternalprinter.Aflatpanelreplacestheprinterifnotordered.Theprinterisadotmatriximpactprinterwith57.5mmwidepaperroll.Paperresultsprintedonthisprinterwillnotblackeninhightemperatures.Thepanelhastwolockingstudsandacontrolprintadvancebutton.

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Rear panelTherearpanelillustratedbelowaccommodatesallconnectionstotheinstrumentwiththeexceptionofafrontfacingUSBinterface.

Item Description 1 Groundconnectionwithcablelug

2 IEClinepowersocket

3 Fuses

4 USBTypeAsocket

5 USBTypeBsocket

6 12VDCchargersocket

Itismandatoryforsafeoperationthatanearthgroundcableisattachedtothisinstrumentbeforeperformingtests.Thegroundconnectionisidentifiedasitem1intheillustration.Attentionmustbepaidtoproductwarningsandmarkings.

LinepowerisappliedviaanIECsocket(2)andisfused(3).Theinternalbatteries,ifsupplied,canbechargedbyajacktypesocket(6)fromavehicleorcorrectlyratedwallplugtransformer.Ifbatteriesareorderedwiththisproductachargerandvehiclechargingcableissupplied.Notethattheinstrumentisnotdesignedtooperatefrom12VDC,onlytochargethebatteries.

TwoUSBinterfaceconnectors,onetypeA(4)andonetypeB(5),offerUSBhostanddeviceinterfaces.AsecondUSBtypeA(host)interfaceislocatedonthefrontoftheinstrumentforuserconvenience.TheUSBtypeAinterface(4)isusedtodriveaprinterorflash/harddiskdriveandtheUSBtypeBinterface(5)canbeusedtoconnecttheinstrumenttoalaptopPCorothercomputinghost.

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Preparations for useGetting startedItisimportanttoreadtheuserguidethoroughlybeforeoperatingtheOTS80PB/60PBforthefirsttime.Thesafetywarningsareparticularlyimportant.

Supply voltageBeforeconnectinglinepowertotheinstrumentthegroundconnectorshouldbeconnectedtoasuitableearthpoint.

TheOTS80PB/60PBisdesignedtooperateon50/60HzAClinepowerintherange90to265VAC.A12VDCpowercircuitforbatterychargingisfittedwheneitherNiMHorleadacidbatterypacksareordered.Thebatterycanbeeitherchargedusingthesupply12Vvehiclechargercableorfrommainspower.

Assembly

n Unpackinstrumentandcontentsofthepackingbox.

n Ensurethattheinstrumentisplacedonasolidsurfaceortablewithsufficientworkingspace.

n Connectgroundtoasuitableearthconnector.

n Fitselectedelectrodestothethreadedshaftsinthetestvesseltakingcarenottoscratchelectrodesurfaces. Electrodesshouldbehandtightenedontotheshaftstopreventanymovementduringuse.

n Adjustmentoftheelectrodegapshouldbedonewiththefeelergaugesprovided,adjustmentwheelslockedand thegaprechecked.

n Fittestvesselintoinstrumentchamber.

n Ifbatteriesarefitted,beforeswitchingontheinstrumentforthefirsttime,connectpowerandleaveforaperiodof atleastfourhours.Thiswillensureafullchargeofthebattery.

n Readthesectioninthisdocumententitled,“InstrumentOperation”beforepoweringuptheOTS80PB/60PBforthe firsttime.

n Connectlinepower.

n Turnontheinstrument.

n Followtheinstrumentsetupproceduredetailedbelow.

Instrument setup procedureTherequiredlanguageoptionisselectedfromthetopleveltabbedwindow.Usetherightarrowkeytonavigateacrossthetabstothelanguagescreen.Theflagsymbolisusedasaniconrepresentinglanguageoption.Simplyusetheup/downarrowbuttonstoselecttherequiredlanguageandpress‘OK’.Thefollowingactions,accessedfromtheSettingstabwindow,shouldbetakenbeforerunningatest:1. Setdateandtime–Time/Dateoption.2. Adjustthedisplaybacklightforoptimumlegibility–DisplaySetupoption.3. Selectunits-metricorimperial.4. Setprinteroptions.

CalibrationTheOTS80PB/60PBarecalibratedinthefactorypriortodeliverysothereisnoneedtocalibrateoninitialsetup.

TheVCM100D/VCM80Dvoltagecheckdevicescanbeusedtoconfirmtheoutputvoltageoftheinstrumentbyreadingthevoltagedirectlyattheelectrodebeforerunningtests.PeriodiccheckingofactualtestvoltageusingtheVCM100D/VCM80Disrecommended.ThevoltagechecktestisaccessedfromtheToolstabwindow.

Test vessel motorised stirrer Unpacktheoptionalmotorisedstirrerassemblyfromitsboxandfitthestirrershafttotheundersideofthestirrerassembly.Theunitisreadyforuse.Theoiltestvessellidisremovedandthestirrerassemblyusedasalidforteststhatrequirestirring.

Whennotinusecareshouldbetakentostorethestirrershaftandstirrerlidassemblyinthecarrybagprovidedwiththeinstrument.Transportation and storageTheOTS80PB/60PBareprecisioninstrumentsthatgeneratesHVto80kVandneedstobetransportedandstoredcarefully.AtransportationcaseisavailableasanoptionandrequiredbycustomerswantingtotransporttheOTS80PB/60PBbyroad,railorair.

Theunitshouldbestoredinaroomorareawheretheenvironmentiswithinthetemperaturerangeof-30ºCto65ºCandmaximumhumidityof95%at45ºC.

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Operating instructionsTop level tabsTheuserispresentedwithasetofsixtabbed,toplevelwindowsasdepictedbelowwhichfacilitateinstrumentcontrol.Leftandrightarrowkeysnavigatebetweentabs.

Home Setup File

Information Tools Language

Thehometabcontainssummaryinformationforeachshowingtheselectedautomaticteststandard,IDoftheassettheinsulatingliquidcomesfrom,thetypeofinsulator,electrodegapandthestirrerifrequired.Thisisthemainscreenfromwhichtestsarerun.

Setupwindowoffersinstrumentsettingsoflanguage(canalsobesetfromlanguagewindow–overcomesdifficultywheninstrumentissettounknownlanguages),time/date,display,units,printerandasettingtoselectfastdetectionofbreakdown.

Userscanprint,save,recall,deleteanddownloadresultstoPCorUSBdrivefromthefilewindow.

TheInformationwindowoffersdetailsabouttheinstrumentsoftwareconfiguration/versionaswellasahelpfunctionthatservesasanindexeduserguide.

Thetoolswindowofferstheabilitytomanageteststandardsincludingtheabilitytodefinecustomtests,favouritetestsandaddandremovenewstandardsandstandardupgradesviaUSBdiskorcomputerconnection.Anautomaticelectrodecleanfunctionisincludedasameansofremovingdepositsfromelectrodesurfaces.ThiswindowalsorunsatestusingtheVCM100D/VCM80Dvoltagetesterstocheckoutputvoltageattheelectrodebarrier.

Theflagsymbolisusedasaniconrepresentinglanguageoption.Simplyusetheup/downarrowbuttonstoselecttherequiredlanguageandpress‘OK’.

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Navigation and Character EntryThekeypadconsistsofarrowkeyssurroundingan‘OK’buttonusedfornavigatingthescreensandselectingfunctionsandoptions.Thesesixbuttonsfullycontroltheinstrument.

Withineachuserinterfacewindowtheupanddownarrowbuttonsareusedtonavigateupanddownthefunctionslistedontheleftsideofthescreen.The‘OK’keyeitherscrollsthroughoptionsassociatedwitheachfunctionorentersalowerlevelwindowtoperformafunction.

Leftandrightarrowbuttonsnavigatebetweentabsonthetoplevelwindowforoptimumspeed.Individualtabwindowssavethehighlightfunctionandreturntothesamepositiononeachscreen.

Userscannavigateintolowerlevelwindowsusingtheup/downarrowbuttonsandthe‘OK’buttontoreach,forexample,the‘DisplaySetup’function.

Theusernavigatesto‘DisplaySetup’andpresses‘OK’togettothedisplaysetupwindow.Theup/downortheleft/rightbuttonsadjustbrightnesswithabarindicatorshowingbrightnesspercentage.The‘OK’buttonisusedtosetbrightnessafteradjustmentandsubsequentreturntothesettingswindow.

Thefollowingimagesillustratethisfunction

AvirtualQUERTYkeypadthatfacilitatesalphanumericentrytospecifyassetID,filenameandcustomtestname.Acharacterisselectedbynavigatingtoit,currentcharactershowswithabluebackground,andpressingthe‘OK’button.Aftertypingtherequiredcharactersthevirtualkeyboard‘OK’isselectedtoreturntopreviouswindow.

Numericentryisviaavirtualkeypadasshowntotheright.Digitentryisthesameasthefullvirtualkeypadwithakeypad‘OK’activatingareturntopreviouswindow.

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Favourite test standardsItisimportanttosetupfavouriteteststandardsfromthestandardslibrarytoavoidnavigatingthoroughtheentirelisteachtimeyouwanttochangetoadifferenttest.Todothisnavigatetothe‘Tools’toplevelwindowandselect‘Manageteststandards’.Thenmovedownto‘Selectfavouritetests’andchooseonlythosetestswhichyourequire,makingsureyouhavethemostrecentversionofeachtest,unlessyouspecificallywanttouseanoldteststandard.Testsaregreyedoutwhenselected.Simplyreturntothepreviousscreenstosaveyourselection.Thescreensbelowillustratethisprocess.

Performing a breakdown testSelectthe‘Home’tabwindowusingthearrowkeysand‘OK’button.Thiswindowoffersasummaryofinformationrequiredforameasurement.Thefollowingimageshowsatypicalsetupwiththeselectedstandardtest,thetestidentificationorassetIDcomprisedofanassetnumberandtwodigitserialnumber,thetypeofoil,requiredelectrodegap,electrodeshapeandfinallythestirrer.

Whentheuserselectsaparticularstandardonlyvalidoptionsarepresentedwithrespecttogapsetting,electrodesandstirreroptions.

Navigationissimple;upanddownarrowbuttonsmoveupanddowntheleftsideofthewindowwhilstoptionsforeachlinecanbescrolledthroughusingthe‘OK’key,orinformationenteredinthecaseofTestID.

Test in progressDuringatestthescreenflashesredwarningHVsymbolstoremindtheuserthatahighvoltagetestisinprogress.Asasafetymeasure,anykeypresswillimmediatelyhaltthetest.

Theelectrodepotentialdifferenceisdisplayedasitrampsupinover-sizeddigitstoemphasisethepresenceofhighvoltage.

Betweenteststhereisadwelltimeandpossiblyastirringaction.Acountdowntimerindicatesperiodofdwellorstirringremaining.

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Test resultsAttheendofanytestresultsareshownonthescreen.AtypicalexampleistheIEC60156test.Thisimageshowsthecompleteinformationpresentedtotheuserhoweverthescreensizeisnaturallysmallersoasliderfunctionenablestheusertonavigatethroughtheresultandprintitifrequired.

ThetestresultforIEC60156containsresultsofsixsequentialbreakdowntestswithteststatisticsofaveragebreakdownvoltage,datadispersionandstandarddeviation.

Theresultswindowfacilitatesadirectprintfunctionatthebottomoftheresultwindow.

Custom testsCustomtestsareteststhatcanbedefinedbyauserbygivingtheusercontrolovertherangeofparameterssetinatest.Threecustomtestshavebeenpre-programmedforuserdefinition;n Custom(5)–thistestcontainsfivesuccessivebreakdowntestsn Custom(6)–thistestcontainssixsuccessivebreakdowntestsn Custom(10)–thistestcontainstensuccessivebreakdowntests

NavigatetotheToolstoplevelscreenasillustratedbelow.Select,“ManageTestStandards”bypressingtheOKbutton.Godownto,“EditCustomTestParameters”andpresstheOKbutton.Thecustomparametersscreenshowsasetofvariablesthatcontrolabreakdowntest.Eachvariableisusersettable,simplynavigatedowntotherequiredsetting,presstheOKbuttonandproceedtochangethevalueasrequired.FornumericentryontheOTSAFmodelsthedecimalpointcanbeenteredbyquicklypressingthedigit‘1’twice.Sotoenter2.5mmgapsettingtheuserentersthefollowingsequence:n 2n 1,1n 5n OK

Inthecustomstestparametersscreen‘setmax.kV’mayappearas,‘setkV(max.xxx)’incertainversionsoffirmware.Allentryfieldsinthecustomtestparametersscreenarerangecheckedtoensureitisvalid.WhenallvaluesaresettheusernavigatesbacktotheToolsscreenviatheRETURNfunction.TheusershouldensurethatCustom(5)andCustom(6)areselectedasfavouritetestsbeforeleavingthemanageteststandardsscreen.

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Basic memory functionsTheinternalmemoryislimitedtofiftytestrecordswherearecordrepresentsafullresultofoneoftheprogrammedstandardtests.BestpracticeistobackupinternalresultsonadailybasisbyeitherdownloadingdataviaUSBcabletoPowerDBLiteorsavingontoaUSBmemorydevice.WhensavingtoUSBmemorydevice,afilenameintheformatofamaximumeightcharactersisrequiredandthefilenameenteredmustonlycontaincharactersA-Z,a-zand0-9.

Memoryfunctionsareaccessiblefromthefilesmenuandincludethefollowing:• Save• Recall• Delete• Printlastresult

TheusercanselectbetweeninternalmemoryandaUSBmemorydeviceforthesave,recallanddeletefunctions.Afterselectionofamemorylocationtherelevantfilesaredisplayedonscreen.Navigationisviathearrowkeysasfollows:

Upanddownarrowmoveupanddownoneitematatime.Leftandrightarrowsimplementapageupandpagedownfunctiontoassistnavigationwherelargenumbersoffilearepresent.

Inthedeletefunctionwindowtheusercanselectall,deselectallorselectonefileatatime.Selectasinglefilebynavigatingtothefile(bluehighlight)andpressingOKtoselect(redhighlightchangingtogreywhennavigatingawayfromtheselectedfile.)

Therecallfunctionoperatesononefileatatime.

Transfer results to USB flash driveUsersmaywanttocopyresultsfrominternalmemorytoaUSBmemorydeviceaseitheranend-of-dayprocedureorwheneverthe50resultfilelimitisreached.ThefollowingprocedurewillbackupfilestoaUSBmemorydevice:

1. Fromthefilemenu,select‘Save’2. Then‘SelectUSB’3. EnterafilenameusingonlycharactersA-Z,a-zand0-9viathevirtualkeypadandreturntosavefunctionscreen4. Navigatedownto‘SelectResults’–afulllistofinternallysavedresultsarepresentedbyTestID.5. Selectrequiredresultsandthen‘SAVE’totransfertheresultstofilename(asentered)onthememorydevice.6. Navigatebacktotoplevelfunctionsandremovethememorydevice(ifrequired)

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Print quality and changing paperTheprintercoverisremovedbyturningthetwofastenersthroughaquarterturnandpullingthepaneloff.

Theprinterribbonmayneedtobemovedontoimproveprintquality.Todothis,removetheprintercoverandturntherighthandrotarywinderindirectionindicatedontheribboncase.Tochangetheprinterribbon,simplypresstheribbonassemblywhereitsays,“PUSHEJECT,”toremovetheoldribbonandreplacewithanewone.ThepartisanEpsonERC-09,Meggerpartnumber25995-002.

Paperisfedintothehousingwiththelosepaperfacingtherearoftheinstrument.Ensurethatthepaperisneatlycutandnotcurledupattheend.

Holdingtheendofthepaperroll,insertthepaperunderthecrossbarandintotheprinterslotasshown(bluearrows)inthedrawingopposite.Presstheprintfeedkeyrepeatedlyuntilthepaperisjustvisiblefeedingthroughtheprintmechanism.

Replacetheprinterfrontcoverbyfirstlocatingitatthebaseofthepanelandsecureitwiththefastenerswhichareturnedbackaquarterturntosecurethepanelinplace.Finallypressthepaperfeedbuttontoadvancethepaperthroughthefrontcoverpaperslot.

Vessel and ElectrodesTheoiltestvesselandelectrodesrequirenomaintenanceotherthancleaning.Electrodescanbeunscrewedandreplacedwithanothershapeelectrode.Electrodesshouldbeexaminedregularlytoensurenopittinghasoccurredandtheelectrodesrenewedwherepittingisevident.

Theinstrumentincludesabuiltinelectrodecleaningfunctionwhichcanbeactivatedfromthetoolsmenu.Thisfunctionwillperform24sequentialbreakdownstoremovedepositsonelectrodesurfaces.

VCM100D/VCM80DTheVCM100D/VCM80DarenotuserserviceableitemsbutmayrequireperiodiccleaningusingacleanclothdampenedwithIsopropylAlcohol(IPA).

Test vessel motorised stirrerMegger’smotorisedstirrerisintegratedintoamodifiedlidassemblyandsimplyreplacesthevessellid.Powerisconnectedviaaflushmountedrearinsertandisdisconnectedasthestirrerassemblyislifted.Thisunitisnotuserserviceable.

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Preventive maintenance

GeneralTheOTS80PB/60PBisaHVinstrumentgeneratingupto80kVandisnotuserserviceable.Theusershouldensurethatthelidisnotcrackedordistortedbeforeuse.Theonlyinternalpartoftheinstrumentthatisaccessibletotheuseristheprinterpaperhousingallowingrenewalofpaperandribbonwhenrequired.OpeningtheOTS80PB/60PBisstrictlyforbiddenandwillconstituteabreachofwarrantee.Thereisnoneedforanytoolstobeusedwiththisinstrumentotherthanthesuppliedgaugesandmagneticbeanretriever.

CleaningTocleantheoutersurfacesoftheOTS80PB/60PB,firstdisconnectfromlinepowerandthenwipetheinstrumentusingacleanclothdampenedwithIsopropylAlcohol(IPA).

Theusermustensurethatthetestchamberisalwayskeptclean,particularlypriortoatest.Wipeawayanyspiltoilinthechamberorontheoutsideofthetestvesselwithalintfreecloth.Whenalotofoilisspiltinthetestchambertheunitisdesignedwithadrainfacilityattherear.Simplyunclipthecleartubeanddrainoilintoabeakerorothersuitablecontainer.

Tocleantheinsideofthetestvesselfollowtheinstructionsgivenintherelevanttestspecificationor,inthecaseofnoinstructions,cleanedwithasmallvolumeofthenextsampleofoiltobemeasured.

Care for OTS electrodesBrasselectrodessuppliedwiththeMeggeroiltestsetswillshowsignsofdepositsbuiltupfrominsulatingoilbreakdowntesting.Iflefttheywilloxidiseandappeardull.

New electrodesMeggerelectrodesaresuppliedinakitwithgapgaugesandmagneticstirrerbeansandretrievalstick.theelectrodeshavedifferentshapesbutarecaredforinthesameway.Ifnewelectrodesrequirecleaning,isopropylalcohol(IPA)maybeusedtocleanthemoff.Itisadvisabletoimmersetheelectrodesincleaninsulatingoilforacoupleofhourspriortouse.

Electrode storageElectrodesmaybestoredinasuitablecontainerorimmersedincleanmineralinsulatingoil.Electrodesinatestvessellefttostandovernightmaybeleftwiththelastoilsampletestedinthevessel.

Cleaning oxidised/dirty electrodesDirtyelectrodesmaybecleanedwithaclean,softclothandbrasscleanerbutcareshouldbetakentouseminimalpressuretoavoidremovalofexcessiveelectrodematerial.AfterremovingthedirtcleantheelectrodeswithacleanclothandIPA.Itisadvisabletoimmersetheelectrodesincleaninsulatingoilforacoupleofhourspriortouse.

Ifelectrodesarepittedorscratchedtheyshouldbediscardedandnewelectrodesfitted.

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OTS80PB/OTS60PBTechnical SpecificationThefollowingtechnicalspecificationsapplytotheOTS80PB/60PB:

Test voltage -40to0to40kV,-30to0to30kV@61.8Hz

Voltage resolution 0.1kV

Voltage accuracy ±1%±2digits

Vessels400ml(standard)150ml(option) Thermoplasticpolyamidechamberprovidesprecisionelectrode alignment,adjustmentwheelslockelectrodesinposition

Temperature sensor resolution 1ºC

Power supply Linevoltage/power 90to264VAC,300VA Linefrequency 48/63Hz

Fuses 2x4ACFSTceramic,20mmx5mm,for250V

Batteries (optional) LeadAcid2x12V4Ah,orNiMH24V2Ah

DC power supply 12VDC,60VA–fittedwithbatteryoption,usedtochargebatteryonly

Internal printer (option) Dotmatriximpactprinterwithgraphicaloutput Paper57.5mmwide,weight52gmperroll EpsonblackribboncassetteERC-09B

Protection Safetyinterlockontestchamber Dischargebarrieronpolycarbonatetestchambercover

Display 320x240QVGAcolourdisplaywithbacklight

Dimensions (W x H x D) OTS80PB 520mmx380mmx250mm

OTS60PB 520mmx330mmx250mm

Weight OTS80PB 20.5kg(nobattery) 21kg(NiMHbattery) 23.5kg(withLeadacidbatteries)

OTS60PB 16.3kg(nobattery) 16.8kg(NiMHbattery)

Operating temperature 0ºCto+50ºC

Storage temperature -30ºCto+65ºC

Humidity 80%RHat40ºCoperation 95%RHat40ºCstorage

Altitude 1000m

Safety DesignedinaccordancewithIEC61010

EMC LightindustrialIEC61326-1ClassB,CISPR22,CISPR16-1andCISPR16-2

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VCM100D/VCM80D Voltage check metersTechnical SpecificationTheVCM100DandVCM80DareOTSaccessoriesthatenablethevoltageoutputoftheoiltestsettobecheckedbymeasuringtheactualvoltageattheHVelectrodes.ThecalibrationmetersfitintheoiltestsetchamberinplaceofastandardvesselandaredesignedtoensurethattheloadontheOTStransformerissimilartotheloadduringanoildielectricstrengthtest.

Meter type Proprietary100kV/80kVMeggerOTSvoltmeterwith4seven-segment digitdigitalreadout

Accuracy at 23 °C 2.0%plus2digitsto50kVrms 2.5%plus2digits>50kVrmsto75kVrms 3.0%plus2digits>75kVrmsto100kVrms(VCM100Donlyabove80kV)

Temperature range Operational 0°Cto40°C

Storage -30°Cto+70°C

Humidity range Operational 50%RHat20°C

Storage 93%RHat40°C

Safety ThemeterisonlyapprovedforusewithMeggeroiltestsets

Dimensions (W x H x D) 250mmx150mmx115mm

Weight 1.8kg

Storage and transportationTheOTS80PB/60PBareprecisioninstrumentthatgeneratesHVto80kVandneedstobetransportedandstoredcarefully.AtransportationcaseisavailableasanoptionandrequiredbycustomerswantingtotransporttheOTS80PB/60PBbyroad,railorair.Asoft,shouldercarrycaseisprovidedasanoptionwiththeOTS80PB/60PB.Itopensuptofacilitaterunningatestwithoutremovaloftheinstrumentandprovidestwosidepouchesforstorage.

Theunitshouldbestoredinaroomorareawheretheenvironmentiswithinthetemperaturerangeof-30ºCto65ºCandmaximumhumidityof95%at45ºC.

IftheOTS80PB/60PBhasbatteriesfitteditshouldbefullychargedatleastonceeverythreemonthstomaintainfullbatterycapacity.

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Only Megger supplied accessories can be used with the OTS range. Non approved equipment cannot be guaranteed to work with the OTS.

Factory fitted accessoriesn Internalprintern Battery–eitherLeadacid(OTS80PBonly),NiMHbatteryornobattery(linepoweronly)optionn Internal12Vchargerand12Vvehiclecabletochargebatteries(nottooperatetheinstrument)n Electrodesets–IEC,ASTMandfullelectrodesetcontainingoneofeachtypeofelectroden Vessellidmountedimpellerforusewith400mlvesseln Powerlead

Optional accessories & sparesn Transportationcasen VCM100D/VCM80Dvoltagecheckmetersn Vesselassembly400mln Vesselassembly150mln Vessellidmountedimpellerforusewith400mlvesseln ElectrodesetsIEC156n ElectrodesetASTMD877/1816n Fullelectrodeset–containsallelectrodesn Printerpaper

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Repair and warranty

TheTestsetcircuitcontainsstaticsensitivedevices,andcaremustbetakeninhandlingtheprintedcircuitboard.Iftheprotectionofaproducthasbeenimpaireditshouldnotbeused,andbesentforrepairbysuitablytrainedandqualifiedpersonnel.Theprotectionislikelytobeimpairedif,forexample,theproductshowsvisibledamage,failstoperformtheintendedmeasurements,hasbeensubjectedtoprolongedstorageunderunfavourableconditions,orhasbeenexposedtoseveretransportstresses.

New products are guaranteed for 1 year from the date of purchase by the user.Note: Any unauthorized prior repair or adjustment will automatically invalidate the warranty.

InstrumentrepairandsparepartsForservicerequirementscontact:–

MeggerLimited or Megger ArchcliffeRoad ValleyForgeCorporateCenter Dover 2621VanBurenAvenue Kent,CT179EN Norristown,PA194 England U.S.A.

Tel:+44(0)1304502243 Tel:+1(610)676-8579 Fax:+44(0)1304207342 Fax:+1(610)676-8625

oranapprovedrepaircompany.

Approved repair companiesAnumberofindependentcompanieshavebeenapprovedforrepairworkonmostMeggerproducts,usinggenuineMeggerspareparts.ConsulttheAppointedDistributor/Agentregardingspareparts,repairfacilitiesandadviceonthebestcourseofactiontotake.

Returning a test set for repairIfreturningatestsettothemanufacturerforrepair,itshouldbesentfreightpre-paidtotheappropriateaddress.Acopyoftheinvoiceandofthepackingnoteshouldbesentsimultaneouslybyairmailtoexpediteclearancethroughcustoms.Arepairestimateshowingfreightreturnandotherchargeswillbesubmittedtothesender,ifrequired,beforeworkontheinstrumentcommences.

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AUSTRALIAMegger Pty LimitedUnit 1, 11-21 Underwood RoadNSW 2140T +61 (0)2 9397 5900F +61 (0)2 9397 5911E auenquiries@megger.com

dUbAIMeggerDubaiUnited Arab EmiratesT +971 4 456 9057E mesales@megger.com

CANAdA Megger110 Milner Avenue Unit 1Scarborough Ontario M1S 3R2T +1 416 298 9688 (Canada only)T +1 416 298 6770F +1 416 298 0848E casales@megger.com

FRANCE Megger SARLZ.A. Du Buisson de la Couldre23 rue Eugène Henaff78190 TRAPPEST +33 (0)1 30.16.08.90F +33 (0)1 34.61.23.77E infos@megger.com

dEUTSChLANd Megger GmbHObere Zeil 261440 OberurselT 06171-92987-0F 06171-92987-19E DEanfrage@megger.com

INdIA Megger (India) Pvt Limited501 Crystal Paradise MallOff Veera Desai RoadAndheri(w)Mumbai - 400053T +91 22 26740468F +91 22 26740465

SoUTh AFRICAPO Box 22300Glen Ashley 4022DurbanSouth AfricaT +27 031 5646578F +27 031 5637990

SvERIgEMegger Sweden ABEldarvägen 4Box 2970SE-187 29 TÄBYT +46 8 510 195 00F +46 8 510 195 95E SVinfo@megger.com

SChwEIzMegger AGOb. Haselweg 6305727 Oberkulm, AargauT +41 62 768 20 30F +41 62 768 20 33

ThAILANdMegger30/46 Moo 13Nongprue, BanglamungChonburi 20150T +66 860103395E THenquiries@megger.com

UNITEd KINgdomMegger LimitedArchcliffe Road, DoverKent CT17 9ENT +44 (0)1 304 502101F +44 (0)1 304 207342E uksales@megger.com

USA Megger4271 Bronze Way, Dallas,Texas 75237-1019T +1 800 723 2861 (USA ONLY)T +1 214 333 3201F +1 214 331 7399E sales@megger.com

USA MeggerValley Forge Corporate Centre2621 Van Buren AvenueNorristown, PA 19403 T +1 610 676 8500F +1 610-676-8610 (USA ONLY) E sales@megger.com

USA Megger4064 State Highway 6 SouthCollege Station, TX 77845T +1 979 690 7925F +1 979 690 0276E sales@megger.com

ThisinstrumentismanufacturedintheUnitedKingdom.Thecompanyreservestherighttochangethespecificationordesignwithoutpriornotice.

Meggerisaregisteredtrademark

PartNo.OTS80PB_OTS60PB_en_V050611

M