XPRT‐1000,XPRT‐1500,XPRT‐2000,XPRT‐3000USER’SMANUALUNINTERRUPTIBLEPOWERSUPPLY(UPS)
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INTRODUCTION
Theinformationprovidedinthismanualcoverssinglephase1000‐3000VAuninterruptiblepower
systems,theirbasicfunctions,operatingprocedures,optionsavailableandemergencysituations.Italso
includesinformationonhowtoship,store,handle,andinstalltheequipment.Onlydetailed
requirementsoftheUPSunitsaredescribedherein,andinstallationmustbecarriedoutinaccordance
withthismanual.Electricalinstallationmustalsocarefullyfollowlocallegislationandregulations.Only
qualifiedpersonnelshouldconducttheseinstallationsasfailuretoacknowledgeelectricalhazardscould
provetobefatal.
PRODUCTDESCRIPTION
ManydifferentkindsofsensitiveelectricalequipmentcanbeprotectedbyanUninterruptiblePower
Supply(UPS)includingcomputers,workstations,processcontrolsystems,telecommunicationssystems,
salesterminals,othercriticalinstrumentation,etc.ThepurposeoftheUPSistoprotectthesesystems
frompoorqualityutilitypower,completelossofpower,orotherassociatedproblems.
Electricalinterferenceexistsinmanyforms,causingproblemsinACpower,fromlightning,power
companyaccidentsandradiotransmissionmotors,airconditioners,andvendingmachines.Protection
ofsensitiveelectricalequipmentisvitaltoprotectagainstpoweroutages,loworhighvoltage
conditions,slowvoltagefluctuations,frequencyvariations,differentialandcommon‐modenoise,
transients,etc.
Topreventpowerlineproblemsfromreachingcriticalsystemscausingdamagetosoftware,hardware,
andequipmentmalfunctions,theUPSmaintainsconstantvoltage,isolatingcriticalloadoutputand
cleaningtheutilityACpower.
DoubleConversionOn‐LineTechnology
Adoubleconversionon‐linetechnologyUPSprovidescompletelyisolated,clean,uninterruptedsingle‐
phasepowertoyourcriticalsystems,whilemaintainingthebatteriesfortheirmaximumpotential.In
theeventthatthepowerfailurelastslongerthantheUPSbackuptime,theUPSwillshutdownavoiding
batterydamage.WhentheinputACvoltagereturns,theUPSwillautomaticallyreturnonlineto
rechargethebatteries.
Asshowninfig.1blockdiagram:
• Aninputfilterreducestransientsontheincomingutility.
• Tomaintainfullbatterycharge,theACinputpowerisrectifiedandregulatedintherectifier
feedingpowertothebatteryconverterandinverter.
• DCpowerisconvertedtoACintheinverter,passingitontotheload.