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3.4 BATTERY CHARGER
The battery charger utilizes energy from the utility power and pre-
cisely regulates it to continuously “float charge” the batteries. The bat-
teries are being charged whenever the Liebert GXT2U is plugged in,
even when the UPS is not turned on.
3.5 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.
3.6 BATTERY
The Liebert GXT2U utilizes valve-regulated, nonspillable, lead acid
batteries. To maintain battery design life, operate the UPS in an
ambient temperature of 68°F to 77°F (20°C to 25°C). Optional external
battery cabinets are available to extend battery run times.
3.7 DYNAMIC BYPASS
The Liebert GXT2U 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, overtemperature, or UPS failure condition, the
UPS automatically transfers the connected load to bypass. Bypass
operation is indicated by an audible alarm and illuminated amber
Bypass LED (other LEDs may be illuminated to indicate the diag-
nosed 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 utility supply.
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