Specifications
Operation
Modes
Inaninstallationthatdoesnotincludeamaintenancebypasspanel,theUPShasthreeoperationmodes:
normaloperation,batteryoperationandstaticbypassoperation.IftheinstallationincludesaPDU,a
PDU-XR,oranexternalmaintenancebypasspanel,themodemaintenancebypassoperationalsobecomes
available.
NormalOperation
Duringnormaloperation,theUPSconvertstheutility/mainssupplytoconditionedpowerforthe
connectedload.
BatteryOperation
Duringbatteryoperation,theUPSprovidesconditionedpowertotheconnectedloadfromitsbatteries
foraniteperiod.TheUPStransferstobatteryoperationiftheutility/mainspowersupplyfailsor
isoutsidepre-denedlimits.
StaticBypassOperation
Staticbypassoperationisafeaturethatkeepstheloadsupplieddirectlyfromtheutility/mainssupply
duringdifferentscenariosontheUPSordownstreamfromtheUPS.Instaticbypassoperation,the
utility/mainsissupplyingpowertotheconnectedloaddirectly,bypassingallinternalUPSfunctions.
MaintenanceBypassOperation(Optional)
TheUPScanbeconnectedtoaPDU,aPDU-XR,oranoptionalexternalmaintenancebypasspanel
thatenablestheusertobypasstheUPScompletelyformaintenancepurposesthatmighteveninclude
replacementoftheentireUPS.Theconnectedloadwillthenbefeddirectlyfromtheutility/mainssupply,
andtherewillinthiscasebenolteringofthesupplyorbatterybackupoftheload.
OperationProcedures
Breakers/SwitchesintheSystem
Q1
UPSinput
Q2UPSoutput
Q3
MaintenanceBypass
Q5
StaticBypassinput(onlyindualutility/mainssystems)
Note:IfthesystemdoesnotcontainaPDUorPDU-XR,theQ1,Q2,andQ3switchesand
theQ5breakershouldbelocatedinanoptionalexternalmaintenancebypasspanel.Seethe
documentationincludedwiththemaintenancebypasspanelforadditionalinformation.
990–3015E-001
Symmetra™PX48,96,and160kW400V100kW208VOperation
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