Battery Charger; Dc To Dc Converter; Battery; Dynamic Bypass - Liebert UPStation GXT 2U User Manual

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 UPStation GXT 2U 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 UPStation GXT 2U utilizes valve-regulated, nonspillable, flame
retardant, 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 UPStation GXT 2U provides an alternate path for mains 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 mains supply.
6
Major Components