Liebert UPStation GXT User Manual page 5

DC TO DC CONVERTER
The DC-DC converter utilizes energy from the battery system and raises the DC
voltage to the optimum operating voltage for the inverter. This allows the inverter
to operate continuously at its optimum efficiency and voltage, thus increasing
reliability.
BATTERY
The UPStation GXT™ employs valve regulated, nonspillable, lead acid batteries.
At typical room temperatures and with the UPS float charging, the battery system
will last many years. Optional external battery cabinets are available to provide
extended run times for the rack-tower (RT) models. For battery run times, refer
to the Typical Battery Discharge Curves.
DYNAMIC BYPASS
The UPStation GXT™ provides an alternate path for utility power to the
connected load, in the unlikely event of a UPS malfunction. Should the UPS
have an overload, over temperature, or UPS failure condition, the UPS
automatically transfers the connected load to bypass. Bypass operation is
indicated by an alarm and an illuminated Bypass LED (other LED's may be
illuminated to indicate the diagnosed problem). To manually transfer the
connected load from the inverter to bypass power, press the Off button once.
NOTE: The bypass power path does NOT protect the connected equipment
from disturbances on the utility supply.
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