2.6 Battery
The Liebert GXT3 utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery design life, operate the
UPS in an ambient temperature of 15°C to 25°C (59°F to 77°F). Optional external battery cabinets are available to extend
battery run times. For run times, see Table 12.8 on page63.
2.7 Dynamic Bypass
The Liebert GXT3 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 any other 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 diagnosed problem). To manually transfer the connected load from the
inverter to bypass, press the Standby/Manual Bypass button once and hold it for about 2 seconds.
NOTE: The bypass power path does NOT protect the connected equipment from disturbances in the utility supply.
Vertiv | Liebert® GXT3 ™ Installer/User Guide | 11
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