2.8.5 Frequency Converter Mode
All models of the GXT4 are capable of frequency conversion. Frequency Conversion Mode can be selected
using the configuration program. Allowable frequency operating modes include:
• Auto Sensing - 50Hz or 60Hz – Bypass Enabled
• Auto Sensing - 50Hz or 60Hz – Bypass Disabled
• Frequency Converter - 50Hz – Bypass Disabled
• Frequency Converter - 60Hz – Bypass Disabled
NOTE: The default for all models of the Liebert GXT4 is “Auto Sensing - 50Hz or 60Hz – Bypass
Enabled.”
WARNING! Risk of electric shock. Can cause injury or death. Never touch the AC input
receptacle while the UPS is operating. Voltage may still be present even when the AC input
indicator is Off.
2.8.6 Active ECO Mode
All Liebert GXT4 models can operate in Active ECO Mode. In this mode, the connected equipment is
powered through the bypass path to increase efficiency, reducing the electrical costs.
Active ECO mode keeps the rectifier and inverter operating, allowing the inverter to remain synchronized
to bypass. This synchronization allows the transfer of the connected equipment to UPS inverter power
almost seamlessly if bypass power falls outside the user-set limits. Once bypass power returns within the
acceptable parameters, the UPS will return to Active ECO Mode operation.
The default setting is Active ECO Mode Off.
Vertiv | Liebert GXT4 Installer/User Guide | 19
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