Spellman高压电源SL系列操作手册

IMPORTANTSAFETYPRECAUTIONSSAFETYTHISPOWERSUPPLYGENERATESVOLTAGESTHATAREDANGEROUSANDMAYBEFATAL.OBSERVEEXTREMECAUTIONWHENWORKINGWITHTHISEQUIPMENT.Highvoltagepowersuppliesmustalwaysbegrounded.DonottouchconnectionsunlesstheequipmentisoffandtheCapacitanceofboththeloadandpowersupplyisdischarged.Allowfiveminutesfordischargeofinternalcapacitanceofthepowersupply.Donotgroundyourselforworkunderwetordampconditions.SERVICINGSAFETY.Maintenancemayrequireremovingtheinstrumentcoverwiththepoweron.Servicingshouldbedonebyqualifiedpersonnelawareoftheelectricalhazards.WARNINGnoteinthetextcallattentiontohazardsinoperationoftheseunitsthatcouldleadtopossibleinjuryordeath.CAUTIONnotesinthetextindicateprocedurestobefollowedtoavoidpossibledamagetoequipment.Copyright©2000,SpellmanHighVoltageElectronicsCorporation.AllRightsReserved.Thisinformationcontainedinthispublicationisderivedinpartfromproprietaryandpatentdata.Thisinformationhasbeenpreparedfortheexpresspurposeofassistingoperatingandmaintenancepersonnelintheefficientuseofthemodeldescribedherein,andpublicationofthisinformationdoesnotconveyanyrighttoreproduceitortouseitforanypurposeotherthaninconnectionwithinstallation,operation,andmaintenanceoftheequipmentdescribed.WICHTIGESICHERHEITSHINWEISEPRECAUTIONSIMPORTANTESPOURVOTRESECURITEIMPORTANTIPRECAUZIONIDISICUREZZASICUREZZAQUESTOALIMENTATOREGENERATENSIONICHESONOPERICOLOSEEPOTREBBEROESSEREMORTALI.PONIESTREMACAUTELAQUANDOOPERICONQUESOAPPARECCHIO.Glialimentatoriadaltatensionedevonosempreesserecollegatiadunimpiantoditerra.Nontoccareleconnessioniamenochel’apparecchiosiastatospentoelacapacitàinternadelcaricoedell’alimentatorestessosianoscariche.Attenderecinqueminutiperpermetterelascaricadellacapacitàinternadell’alimentatoreadaltatensione.Nonmettereaterrailpropriocorpooppureoperareinambientibagnatiosaturid’umidità.SICUREZZANELLAMANUTENZIONE.Manutenzionepotrebbeessererichiesta,rimuovendolacoperturaconapparecchioacceso.Lamanutenzionedeveesseresvoltadapersonalequalificato,cosciodeirischielettrici.AttenzionealleAVVERTENZEcontenutenelmanuale,cherichiamanoall’attenzioneairischiquandosioperacontaliunitàechepotrebberocausarepossibiliferiteomorte.LenotediCAUTELAcontenutenelmanuale,indicanoleproceduredaseguireperevitarepossibilidanniall’apparecchio.PAGE1.INTRODUCTION1.1DescriptionoftheSLSeries11.2StandardFeatures21.3Options31.4InterpretingtheModelNumber42.INSPECTION&INSTALLATION2.1InitialInspection52.2MechanicalInstallation53.OPERATINGINSTRUCTIONS3.1Operation73.2StandardFeatures84.PRINCIPLESOFOPERATION4.1Chassis184.2LineRectificationandFiltering184.3Inverter194.4HighVoltageTransformer204.5HighVoltageAssembly204.6Control/PowerPWB204.7FrontPanelAssembly204.8Options205.OPTIONS5.1AdjustableOverloadTrip215.2220VacSinglePhaseInput215.3NoSlowStart215.4Non-StandardSlowStart215.5ExtraLengthOutputCable215.6FloatingGround215.7FloatingGroundLowLeakage225.8AdjustablePowerTrip/ConstantPowerControl226.MAINTENANCE6.1PeriodicServicing286.2PerformanceTest286.3HighVoltageDividers287.REPLACEMENTPARTS7.1ReplacementParts297.2CorrespondenceandOrderingSpareParts298.FACTORYSERVICE8.1WarrantyRepairs308.2FactoryServiceProcedures308.3OrderingOptionsandModifications308.4ShippingInstructions30LISTOFFIGURESSLSERIESMANUALII118006-001REVTFigure3.1SLSeriesTypicalOperatingSetUp10Figure3.2AWiringDiagramforRemoteProgrammingviaVoltageSource13Figure3.2BWiringDiagramforRemoteProgrammingviaExternalResistance13Figure3.3RemoteMonitorTestPointDesignations14Figure3.4RemoteControlofHighVoltageOnandOff14Figure3.5ExternalInhibitInterfaceCircuit15Figure3.6ExternalInterlockInterfaceCircuit15Figure3.7RemoteHighVoltageOnandRemoteHighVoltageoffIndicatorCircuit16Figure3.8RemoteIndicatorsInterface17Figure5.1FloatingGroundInterfaceCircuit24Figure5.2AdjustablePowerRemoteInterfaceTB1Only24Figure5.3PolarityReversalProcedure1kVto8kV(10Wto300W25Figure5.4PolarityReversalProcedures,10kVto130kV(10Wto300W25Figure5.5PolarityReversalProcedures,1kVto8kV(600Wto1200W26Figure5.6PolarityReversalProcedures10kVto130kV(600Wto1200W26Figure5.7InstantOnOption27Figure5.8BipolarMaster/SlaveOption27LISTOFTABLESTable1.1SLOptions3SLSERIESMANUALIII118006-001REVTTable3.2RearPanelInterface25pinMiniD12Table4.1ListofMainAssemblies19APPENDIXA.SpecificationControls(CustomModelsOnlyB.SchematicsSLSERIESMANUALIV118006-001REVTSLSERIESMANUAL1118006-001REVTChapter1INTRODUCTION1.1DescriptionOfTheSLSeriesheSLSeriesofhighvoltagepowersuppliesprovidesverywellregulated,lowripplehighvoltageinahighlyefficient,compactdesign.TheimprovementsinsizeandperformanceovertraditionallydesignedhighvoltagepowersuppliesareduetotheresonanttopologyanduniquecontrolcircuitryoftheSLdesign.Aproprietarycontrolsystemmaintainshighfrequencyovertheoperatingoutputrange.Highfrequencyoperationallowsadynamicresponsetimeoflessthan5milliseconds,andoneofthelowestripplespecificationsintheindustryatthispowerlevel.Thecombinationofproprietarycontrolsystemandproprietaryprotectioncircuitryenablesthesuppliestooperateunderarcingandextremetransientconditionswithoutdamageorinterruptions.TheDCoutputvoltageandcurrentarecontinuouslyadjustablefromzerotothemaximumratingviatwofrontpanelten-turnlockingpotentiometers.Thesehighvoltagepowersupplieshave0.005%loadregulation,0.005%lineregulation,and0.1%p-pripple.Thesuppliesoperatefromeithera115or220Volt,singlephaseACline.Otherlinevoltagesareavailable.OptionsarelistedinTable1.1andaredescribedinSection5.Customdesignedunitstomeetspecialneedsarealsoavailable.T1.2StandardFeaturesTheSLSeriesincorporatesseveralstandardfeaturesdesignedtooptimizeusersatisfactionandsafety.•SLOWSTART:Thisfeatureprovidesagradualincreaseinhighvoltageuntilthepresetoperatingpointisreached.Theslowstarttimeisfactorysetfor6seconds.Otherslowstarttimesareavailableasanoption.•ARCDETECT/ARCQUENCH/ARCCOUNT:Thesefeaturesallowtheusertotailorthepowersupplytomeetspecificneedsindynamicloadapplications.Ifanarcoccurs,theoutputisinhibitedforapproximatelyonesecond,thentheoutputisrampeduptothepresetlevelwiththeslow-startcircuitry.SeeChapter3foroperatingdetailsandinformationforusercustomizationofthesefeatures.•INTERNALFAULTPROTECTION:TheSLSeriescontinuallymonitorsinternalcircuitscriticaltotheproperoperationofthepowersupply.Intheeventthatoneofthesecircuitsdoesnotfunctioncorrectly,thefaultdetectioncircuitlatchestheappropriatefaultonthefrontpaneldisplayandturnsofftheoutputandrevertstheunittothePOWERDOWNmode.•INDICATORLAMPS:LINEPOWER,HIGHVOLTAGEOFFANDHIGHVOLTAGEONindicators.•OUTPUTCABLE:Allmodelsareprovidedwithatenfootshieldedhighvoltageoutputcable.Thecablesaredesignedwithaplugarrangementsothattheycanbeeasilyremovedfromthematingreceptaclelocatedontherearofthechassis.•REMOTEPROGRAMMING:Allowsremoteadjustmentoftheoutputvoltageandcurrentviaanexternalvoltagesource.TheoutputpowerisalsoremotelycontrollablewhentheCPCorAPToptionisordered,TB1only.•REMOTEMONITOR:Allowsremotemonitoringoftheoutputvoltageandcurrent.NOTE:OutputpowerremotemonitorisincludedwiththeCPCandAPToptions,TB1only.•REMOTEHIGHVOLTAGECONTROL:AllowsremotecontrolofHIGHVOLTAGEONandHIGHVOLTAGEOFF.SignalsarealsoprovidedforremoteindicationofHVONorHVOFFstatus.•EXTERNALINHIBIT:Acontrolsignalthatwillinhibitthehighvoltageoutputisprovidedontheexternalinterface.Alogiclow,ground,willinhibitthehighvoltageoutputandalogichigh,open,willrestorethehighvoltageoutputtothepresetlevel.NOTE:TheExternalInhibitcircuitshouldNOTbeusedforprotectionagainstinjuryorforsafetyinterlock.SeeExternalInterlockforthistypeofsafetycontrol.•EXTERNALINTERLOCK:Interlockconnectionsareprovidedontheexternalinterfaceontherearofthechassisforconnectiontoasafetyswitch.Theunitwillnotoperateunlesstheinterlockcircuitisclosed.Duringhighvoltageoperation,openingtheinterlockcircuitwillcausetheHighVoltagetoshutoff.Thiscircuitshouldbeusedforsafetyinterlockcircuits.DiagnosticDisplay“DeadFront”typeindictorsareprovidedtogivetheusercompleteindicationofsystemoperationandfaultconditions.Ifafaultoccurs,thepowersupplywillreverttothePOWERDOWNmode.ThisisindicatedbyboththeHVONandHVOFFlampsturningoff.Toreset,depresstheHVOFFswitch.•VOLTAGE(CONTROL:Indicatestheoutputvoltageregulatorcircuitismaintainingvoltageregulation.•CURRENT(CONTROL:Indicatestheoutputcurrentregulatorcircuitismaintainingcurrentregulation.•POWER(CONTROL:Indicatestheoutputpowerregulatorcircuitismaintainingpowerregulation(optional.•HVINHIBIT:IndicatesthatthehighvoltagesupplyisbeinginhibitedbyeithertheEXTERNALINHIBITorinternalprotectioncircuitry.SLSERIESMANUAL2118006-001REVT•INTLKCLSD:IndicatestheEXTERNALINTERLOCKconnectionsareintheclosedposition.Thisalsoindicatesclosureofinternalpowersupplyinterlocks.1.3OptionsAOL•INTKLOPEN:IndicatestheEXTERNALINTERLOCKconnectionsareintheopenposition.Thisalsoindicatesopeningofinternalpowersupplyinterlocks.AdjustableOverloadTrip(0-103%OLOverloadTrip(103%•OVERVOLT:Indicatestheovervoltageprotectioncircuitryhascausedthepowersupplytoturnoff.Overvoltageprotectionisinternallysetto110%oftheratedoutputvoltage.APTAdjustablePowerTripTrip•OVERCURR:IndicatestheoutputcurrenthasexceededtheprogrammedcurrenttriplevelwhentheAOL(AdjustableOverloadTriportheOL(OverloadTripoptionsareinstalled.GroundFGLLFloatingGround,LowLeakage(10mA•OVERPOWER:Indicatestheoutputpowerhasexceededtheinternallysetlevelortheremoteprogrammedleveliftheoptionalcircuitryisinstalled.CPCConstantPowerControlSS(xNon-StandardSlowStart•ARC:IndicatesthatanarchasoccurredwithinthepreviousonesecondorthattheARCCOUNT/TRIPhasshutdownthepowersupply.NSSNoSlowStartON•RGLTERR:Indicatesafailureinthevoltage,currentorpowerregulationcircuitry.Thisfaultusuallyoccurswhenthereisalackofoutputpowertomaintainregulation.LRLowRipple(0.05%p-p(Specify220Vor100Vor200VacSinglePhaseInputWithOrder.TheoptionsavailablearelistedinTable1.1.SeeSection5formoreinformationontheseoptionsalongwithoperatingandset-upinstructions.Withfewexceptions,theseoptionsandmodificationscanberetrofittedtoyourpowersupplyatthefactoryinashorttime.Forpriceandretrofitarrangements,contacttheSpellmanSalesDepartment.DPM441/2Digit±1LeastSignificantDigitPanelMtrPolarityFPSFilamentPowerSupplyLL(xExtraLengthOutputCableinFeetMaster/SlaveC31/2”High(2UCabinetForMultipleUnitsEFRExternalFaultRelayBFPBlankFrontPanelTable1.1SLOptionsSLSERIESMANUAL3118006-001REVTSLSERIESMANUAL4118006-001REVT1.4InterpretingtheModelNumberThemodelnumberofthepowersupplydescribesitscapabilities.Aftertheseriesnameis:1.themaximumvoltage(inKV.2.thepolarityoftheunit:positive(P,negative(Norreversible(PN.3.themaximumoutput(inwatts.4.theoptioncodesforalloptionsthatareincluded.CustomunitshaveanXnumberaftertheoptioncodes.SL30P1200/FG/X(#SeriesNameMaximumVoltagePolarity“X”NumberPowerSLSERIESMANUAL5118006-001REVTChapter2INSPECTION&INSTALLATIONnitialinspectionandpreliminarycheckoutproceduresarerecommended.Forsafeoperation,pleasefollowthestep-by-stepproceduresdescribedinChapter3,OperatingSystems.2.1InitialInspectionInspectthepackageexteriorforevidenceofdamageduetohandlingintransit.NotifythecarrierandSpellmanimmediatelyifdamageisevident.Donotdestroyorremoveanyofthepackingmaterialusedinadamagedshipment.Afterunpacking,inspectthepanelandchassisforvisibledamage.FilloutandmailtheWarrantyRegistrationcardaccompanyingtheunit.StandardSpellmanSLSerieshighvoltagepowersuppliesandcomponentsarecoveredbywarranty.Customandspecialordermodels(withanXsuffixandthemodelnumberarealsocoveredbywarranty.2.2MechanicalInstallationIUnitsintheSLSerieshavefrontpanelholesforstandardEIArackmounting.Therackmustallowrearaccessforcableconnections.Unitsarefullyenclosedandaresuitableforbenchortabletopoperation.StandardunitdimensionsareshowninFigure2.1.Itisstronglyrecommendedtosupportthechassisbyguidesorslides.Slidesareavailableforeaseofservicing(SLoption.SLSERIESMANUAL12118006-001REVT4.5HighVoltageAssemblyTheHighVoltageAssemblywillvarydependinguponthemodelordered.Thecircuitrytypicallyconsistsofafullwave,fullbridge,orfullwavedoublerforvoltageoutputsintherangeof1kVto8kV.Thehighervoltagerangesutilizevariousparallel,seriesarrangementsofafullwavevoltagedoubler.OutputfilteringistypicallyprovidedbyanR-Ctypefilter.Voltagefeedbackforregulationandmonitoringisprovidedbyahighbandwidthresistive/capacitivedivider.CurrentfeedbackforregulationandmonitoringisprovidedbyasenseresistorconnectedatthelowvoltageendoftheHighVoltageRectifier/MultiplierCircuit.4.6Control/PowerPWBThemajorityofcontrolcircuitsforpowersupplycontrolsarelocatedontheCONTROL/POWERPWB.+15VDC,-15VDC,and+10VDCisgeneratedontheCONTROL/POWERPWB.HighVoltageOn/OffcontrolisaccomplishedbyK3,anditsassociatedcircuitry.InterlockcontrolisprovidedbyK4.Voltagefeedbackfromthehighvoltagedividerissenttothecontrolboardviaamassterminatedribboncable.GainadjustmentisprovidedontheHVPWB.TheKVfeedbacksignalissenttothefrontpanelDVMandtotheREARPANELTERMINALBLOCKforremotemonitoring.K2providesswitchingbetweenfeedbackandprogramsignalforthefrontpanelDVM’s.Thisallowstheusertopresetthedesiredoutputbeforeenergizinghighvoltage.Programvoltagesaretypicallyrampeduptosetlevelbyaslowstartcircuit.Anarcsensecircuitprovidessensing,quenchandindicatorofarcconditions.Consulttheoperationmanualforadetaileddescriptionofthearcsensecontrol.CurrentfeedbackfromthehighvoltagerectifierissenttosenseresistorslocatedontheHighVoltageAssembly.CalibratedfeedbackisthensenttotheapplicablecircuitryontheControl/PowerBoard.U12andU13circuitsprovidevisualindicationofthecontrolmode,whichisinoperation.ThesesignalsaresenttotheFRONTPANELASSEMBLYforfrontpanelstatusindication.Theresonantcontrolcircuitryconsistsofavoltagetofrequencyandavoltagetopulsewidthconverter.U17generatesallfrequencyandpulsewidthcontrolsignals.U16providesspecificcontrolfunctionsfortheresonantcontrol.PowersupplyinhibitcircuitsareprovidedbyU22andK3.SystemFaultcontrolandIndicationisprovidedbyU19,U20andU21,andassociatedcircuitry.DiagnosticsignalsarelatchedandthensenttotheFRONTPANELASSEMBLYforstatusindication.4.7FrontPanelAssemblyFrontPanelcontrols,metersandstatusindicationsareconnectedtotheFRONTPANELPWB.TheFRONTPANELPWBinterfacesdirectlytotheCONTROL/POWERPWB.4.8OptionsDuetothemanyvariationsofmodelsandoptionsprovidedintheSLSeries,detailsofactualcircuitsusedmaydifferslightlyfromtheabovedescriptions.ConsultSpellman’sEngineeringDepartmentforquestionsregardingtheprinciplesofoperationfortheSLSeries.Chapter5OPTIONSheoptionsavailableforthispowersupplyaredescribedinthissection.Interfacediagramsareshownwhererequired.OptionsarespecifiedbyincludingtheoptioncodeinthemodelnumberasdescribedinSectionAdjustableOverloadTrip--AOLTheoverloadtripprotectionfeaturerapidlyshutsdownthehighvoltageoutputwhenthecurrentexceedsthelimitsetbythecurrentcontroldialonthefrontpanel.AfastactingcircuitinhibitsthegenerationofhighvoltageandrevertstheunittoPOWERDOWNmode,illuminatingtheOVERCURRENTindicator.Whenadjustableoverloadtripisprovided,itreplacesthestandardcurrentregulationfeature.5.2220VacSinglePhaseInput--220SLSeriespowersupplieswiththe220Vacinputoptionwilloperatefromaninputvoltageof220VacRMS±10%,50to60Hz,singlephase.5.3NoSlowStart--NSSThenoslowstartoptioncausestheoutputvoltageofthepowersupplytorise(within50msectotheratedvoltageupondepressingtheHIGHVOLTAGEONswitch.5.4Non-StandardSlowStart--SS(xThenon-standardslowstartoptionallowsthegradualrisetimeoftheoutputvoltagetobedifferentfromthestandardofsixseconds.Toordertheoptionplacethetimedesiredinsecondsafterthesuffixletter,i.e.SS(10denotesa10secondrisetime.5.5ExtraLengthOutputCable--LL(ftStandardoutputcableis10feetofshieldedhighvoltagecable.Otherlengthsmaybespecifiedinmultiplesof10feet.5.6FloatingGround--FGThefloatinggroundoptionallowsisolationofthepowersupplycommonfromthechassisground.TB2locatedontherearpanelprovidesconnectiontothepowersupplycommoncircuitandtothechassisground.Thissignalcanbeusedforavarietyofapplications.AtypicalapplicationforFGisforconnectionofanexternalmeterorcircuitintotheFGsignalpoint.Thiscircuitcanmonitoractualcurrentflowatalowvoltagelevel.SeeFigure5.1fortypicalconnectiontothefloatinggroundterminal.NOTE:Onstandardunits,TB2-1andTB2-2areconnectedtothechassisgroundedinternally.Maximumfloatinggroundvoltageis15V.Typically,thetotalleakagecurrentofthefloatingterminaltothechassisterminalislessthat1μA.Itisimportanttorealizetherearetwoseparatecomponentstothisleakagecurrent.Thefirstcomponentisleakagecurrentcausedbythecouplingofthe60Hzlinemagneticstothepowersupplycircuitry.ThiscomponentcanbemeasuredwhenthepowersupplyisONandintheHIGHVOLTAGEOFFmode.ThesecondcomponentistheleakagecurrentcausedbythecouplingoftheHVDCcircuitstothechassis.ThecomponentcanbemeasuredbyfirstrecordingtheleakagecurrentintheHVOFFmode,andthenrecordingtheleakageatthedesiredHVsetting.ThedifferencebetweenthetwovaluesistheHVDCleakagecurrent.T5.12BipolarMaster/SlaveOption--MSTheBipolarMaster/Slaveoptionallowstwosuppliesofthesamevoltageratingbutoppositepolaritiestofunctionsasasingletrackingbipolarpowersupply.ThepositivesupplyisconfiguredastheMaster,thenegativesupplyisconfiguredastheSlave.ThisisaccomplishedbyconnectingtheVoltageTestPointofthepositive(MasterunittotheVoltageprogrammingofthenegative(Slaveunit.SeeFigure5-8.TheMaster’svoltageprogrammingsignalwillprovidecontrolofbothpowersuppliesfromzerotoratedoutputvoltage.Thenegativepolaritywilltrackthepositivepolaritywithin±1%from10%tofullratedoutput.Performancespecificationsaregovernedbyindividualunitcharacteristics.Thetwounitsmustbeconnectedindependentlytotheirrespectiveloadsandground.5.13ExternalFaultRelayOptionEFRTheexternalfaultrelayoptionprovidesasetofcustomeraccessiblerelaycontactsthatarecontrolledbythefaultstatuscircuitryoftheapplicableSLSeriespowersupply.AstandardSLpowersupplywillreverttothe“powerdown”modewithavisualfrontpanelindicationifanyofthefollowingfaultconditionsoccur:•Overvoltage:Greaterthan110%ofmaximumoutputvoltagewasproducedbythepowersupply.•Overcurrent:Greaterthan104%ofmaximumoutputcurrentwasproducedbythepowersupplyortheAOLcircuitrywasactivated.•Overtemperature:Excessivetemperaturehasbeensensedwithinthechassis.•RegulationError:Lackofrequiredoutputpowertomaintainregulation•Arc(Shutdown:Arcsensingcircuithasshutdownthesupplyduetoexcessivearcing.•Overpower:Thepowersupplyhasexceededtheinternallysetpowerlimitlevel,ifsuchcircuitryisinstalled.WiththeinstallationoftheEFRoptionforTB1,ifanyofthesefaultsoccur,arelaywillbeactivatedtoprovidearemoteindicationthatthepowersupplyhasrevertedtothe“powerdown”mode.Thecommon,normallyopenandnormallyclosedsetofcontactsareprovided.Relaycontactsareratedat1Aat30Vdcor0.5Aat48Vac.ConnectionsontherearpanelTerminalBlock(TB1canbemadeasfollows:TB1-23(J5-12RelayCommonTB1-24(J5-NANormallyClosedTB1-25(J5-13NormallyOpenResettingthefrontpanelandEFRrelayisaccomplishedbydepressingthegreenfrontpanelHVOFFpush-buttonswitch,whichrevertsthepowersupplybacktothe“standby”mode.RemovalandreapplicationoftheAClineinputvoltagewillalsoresetanyfault.ThecircuitryandcomponentsrequiredfortheEFRoptionareinstalledatthefactorywhenthisoptionisordered.5.14CustomDesignedModels-X#UnitsbuilttocustomerspecificationareassignedanXnumberbythefactory.IfthisunitisanXmodel,aspecificationcontrolsheetisaddedattheendofthetestofthisinstructionmanual.Spellmanwelcomestheopportunitytocustomizeunitstofityourrequirementsortodevelopnewproductsforyourapplications.ContacttheSpellmanSalesDepartmentwithyourneeds.Chapter6MAINTENANCEThissectiondescribesperiodicperformancetestingprocedures.servicingand6.2PerformanceTestWARNINGWARNINGHIGHVOLTAGEISDANGEROUS.THISPOWERSUPPLYGENERATESVOLTAGESTHATAREDANGEROUSANDMAYBEFATAL.OBSERVEEXTREMECAUTIONWHENWORKINGWITHHIGHVOLTAGE.ONLYQUALIFIEDPERSONNELSHOULDPERFORMTHESETESTS.6.1PeriodicServicingApproximatelyonceayear(moreofteninhighdustenvironments,disconnectthepowertotheunitandremovethetopcover.Usecompressedairtoblowdustoutoftheinsideoftheunit.Avoidtouchingorhandlingthehighvoltageassembly.Besurethatthefan(600W1200Wunitsonlyisnotobstructedandspinsfreely.Thefanhassealedbearingsanddoesnotneedlubrication.Besuretoreplacethetopcoverbeforeoperatingforpropercooling.HighvoltagetestproceduresaredescribedinBulletinSTP-783,StandardTestProceduresforHighVoltagePowerSupplies.CopiescanbeobtainedfromtheSpellmanCustomerServiceDepartment.Testequipment,includinganoscilloscope,ahighimpedancevoltmeter,andahighvoltagedividersuchastheSpellmanHVD100orHVD-200,isneededforperformancetests.Alltestcomponentsmustberatedforoperatingvoltage.6.3HighVoltageDividersHighvoltagedividersforprecisemeasurementsofoutputvoltagewithanaccuracyupto0.1%areavailable.AnHVD-100isusedforvoltagesupto100KV.AnHVD200measuresupto200KV.TheSpellmandividerisdesignedforusewithdifferentialvoltmetersorhighimpedancedigitalvoltmeters.Thehighinputimpedanceisidealformeasuringhighvoltagelowcurrentsources,whichwouldbeoverloadedbytraditionallowerimpedancedividers.SLSERIESMANUAL28118006-001REVTChapter7REPLACEMENTPARTS7.1ReplacementPartsContacttheSpellmanCustomerServiceDepartmentforpartslistsforspecificmodels.PartsandsubassembliesforSpellman’shighvoltagepowersuppliesareavailable.Itisrecommendedthatonlyqualifiedpersonnelperformtherepairs.Highvoltageisdangerous;evenminormistakesinrepairscanhaveseriousconsequences.Whenrequestingpartspleasegivethemodelnumberandserialnumberofthepowersupply.7.2CorrespondenceAndOrderingSparePartsEachpowersupplyhasanidentificationlabelontherearofthechassisthatbearsitsmodelandserialnumber.Whenrequestingengineeringorapplicationsinformation,pleasestatethemodelandserialnumberofthepowersupply.Ifspecificcomponentsorcircuitsectionsareinvolvedintheinquiry,itishelpfultoindicatethecomponentsymbol