6
Connection
Model SU8000RT4U has a hardwire input instead of an input cord/plug.
Remove the circular knockouts to route the input cabling to the AC input
terminal block. Unscrew and remove the utility input terminal block cover
to access the AC input terminals. Review the hardwiring cautions below
before attempting to connect the UPS input.
Hardwiring Cautions (Model SU8000RT4U Only)
• Wiringmustbedonebyaqualifiedelectrician.
• When making wiring connections, observe the cable connection regulations
appropriatetoyourarea [e.g.NationalElectricalCode(NEC)in theU.S.]atall
times.Besuretoinstallaneasilyaccessibledisconnectswitchinyourinstallation
wiring so you may cut off the AC input of the UPS during fires and other
emergencies.Ensurethatcables are fittedwithcablesleevesandaresecuredby
connectorclamps.Tightenconnectionswithatorqueofnotlessthan24-28inch-
pounds(2.7-3.2NM).
• Makesurethatyourequipmentisproperlygrounded.
• Usingcablesofimpropersizemaydamageyourequipmentandcausefirehazards.
Choose appropriate cabling and protection circuits to make wiring connections.
Groundconductorsmustbethesamesizeandtypeasthepowerconductorsused.
• Refer to National Electrical Code (NEC) guidelines for proper wire gauge and
outputprotectioncircuitrequirements.
Plug your equipment into your UPS.
YourUPSisdesignedtosupportelectronicequipmentonly.YouwilloverloadyourUPS
if the total VA rating for all the equipment you connect exceeds the UPS's Output
Capacity.DonotconnecthouseholdappliancesorlaserprinterstotheUPS'soutlets.To
findyourequipment'sVAratings,lookontheirnameplates.Iftheequipmentislistedin
amps, multiply the number of amps by the input voltage (208V, 240V or 120V) to
determineVA.(Example:1amp×120V=120VA).
Turn the UPS on.
PresstheUPS's“ON”Button
A
untilyouhearabeeptobegininverteroperation.Your
UPSwillnowprovideoutputpowerthroughitsACoutletstoconnectedequipment.Your
UPS will performa brief self-test andshowthe results on theLCD Display
B
. See
“StartupSelf-Test”inthe“Operation”sectionforthedisplaysequence.*
*ColdStart:TouseyourUPSasastand-alonepowersourcewhenACinputpowerisunavailable(i.e.duringa
blackout),youcan“coldstart”yourUPSandpowerconnectedequipmentfromtheUPS'sbattery.YourUPS's
batterymustbeatleastpartiallychargedforthisoperationtosucceed.Pressandholdthe“ON”Buttonuntilyou
hearabeeptocoldstartyourUPS.TheLCDDisplaywillshowONBATTERYMODE.Batterypowerwillbegin
discharging. Some electronic equipment may draw more amps during startup; when cold starting, consider
reducingtheinitialloadontheUPS.
Note: UPS system will function properly upon initial startup; however, maximum runtime
for the unit’s battery will only be accessible after it has been charged for 24 hours.
To Turn the UPS System OFF: PresstheUPS's“OFF”Buttonuntilyouhearabeep.
TheLCDDisplaywillshow“BYPASSMODE.”TheUPSwillcontinuetoautomatically
chargeitsbatteriesaslongasACinputpowerispresent.Tocompletelydeactivatethe
UPS,unplugtheUPS'slinecordwhentheUPSsystemisinbypassmode.
1
2
1
2
A
B
3
3
Note: The output voltage is set at 208/120V~ when the UPS is shipped from the factory. If you need to change
the output voltage of the UPS, refer to “Output Voltage Selection” in the “Operation” section. You should select
the correct output voltage before connecting your equipment to the UPS.
Plug your UPS's line cord into an electrical outlet.
YourUPSmustbeconnectedtoadedicatedcircuitofsufficientamperage.
Note! After you connect the UPS to a live AC power source, the UPS (in “STANDBY
MODE”) will automatically charge its batteries, but will not supply power to its
outlets until it is turned on.
Input and Output Ratings
Input Maximum Rated Maximum Rated Typical
Model Voltage Input Current Output Current Wire Size
SU5000RT4U 100-140V (L1-N: L2-N) 20A 30A N/A
SU6000RT4U 100-140V (L1-N: L2-N) 24A 30A N/A
SU8000RT4U 100-140V (L1-N: L2-N) 34A 40A 8 AWG
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