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UPS Operation
48
Powerware
®
Prestige Series Installation andOperator’sManual forIBM Applications (3000 VA) Uncontrolled Copy
Operating Modes
After you install and apply power to the UPS, the UPS filters and
regulates incoming AC power, eliminating noise and voltage spikes, and
provides consistent power to your equipment (see Figure 12). While
power is applied to the UPS, the maintenance-free battery is
automatically kept in a fully-charged condition.
UPS Load
Outlet
Battery
Battery Cabinets
Utility
Power
Surge
Suppression
EMI/RFI Filters
Rectifier
Inverter
Bypass Line
BatteryBattery
Battery
Charger
Figure 12. UPS Block Diagram
Normal Mode
During Normal mode, the indicator illuminates and the front panel
displays the percentage of UPS load capacity being used by the protected
equipment (see Figure 13).
LOAD OFF
LOAD ON LOAD ON LOAD ON LOAD ON
APPROX.
81-100%
LOAD
APPROX.
61-80%
LOAD
APPROX.
41-60%
LOAD
APPROX.
0-40%
LOAD
NORMAL
UTILITY
OVERLOAD
SITE FAULT
OVERTEMP
BATTERY
SELF TEST
Figure 13. Normal Operation Indicators