Emerson Liebert UPStation GXT2U - Manual (Page 10)

Major Components
6
4.4 Battery Charger
The battery charger utilizes energy from the mains power and pre-
cisely regulates it to continuously “float charge” the batteries. The bat-
teries are being charged whenever the Liebert UPStation GXT2U is
plugged in, even when the UPS is not turned on.
4.5 DC to DC Converter
The DC to 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 opti-
mum efficiency and voltage, thus increasing reliability.
4.6 Battery
The Liebert UPStation GXT2U utilizes valve-regulated, nonspillable,
lead acid batteries. To maintain battery design life, operate the UPS
in an ambient temperature of 20°C to 25°C (68°F to 77°F). Optional
external battery cabinets are available to extend battery run times.
4.7 Dynamic Bypass
The Liebert UPStation GXT2U provides an alternate path for mains
power to the connected load in the unlikely event of a UPS malfunc-
tion. Should the UPS have an overload, overtemperature, or UPS fail-
ure condition, the UPS automatically transfers the connected load to
bypass. Bypass operation is indicated by an audible alarm and illumi-
nated amber Bypass LED (other LEDs may be illuminated to indicate
the diagnosed problem). To manually transfer the connected load from
the inverter to bypass, press the Standby button once.
NOTE
The bypass power path does NOT protect the connected
equipment from disturbances on the mains supply.