Liebert GXTTM user manual Operating Modes, Normal Mode OPERATION- UPS mode, Battery Mode Operation

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Normal Mode Operation at
51-75% loading
Battery Mode Operation at 81-100% battery capacity

OPERATING MODES

NORMAL MODE OPERATION- UPS mode

During normal operation, mains power provides energy to the UPS. The filters, the power factor correction circuit and

the inverter process this power to provide computer grade power to connected loads. The UPS maintains the batteries in a fully charged state.

The four green LED’s indicate an approximate level of load in 25% increments. If the UPS becomes loaded beyond full rating, the fifth (amber) LED indicator will illuminate and sound an alarm.

The display template indicates the percentage of load on the UPS output.

BATTERY MODE OPERATION

Battery mode occurs in event of an

extreme input voltage condition or complete mains failure. The battery system supplies power through the DC-DC converter to the inverter to generate power for the connected

load.

During battery mode an alarm sounds every 10 seconds. This will change to

2 beeps every 5 seconds when battery runs low (approximately 2 minutes remaining). The AC Input LED will extinguish, and the Battery LED will illuminate to warn that a mains problem

has occurred. Each load/battery level indicator represents a 20% capacity level. As capacity decreases, fewer indicators remain illuminated. Refer to the Troubleshooting Guide.

To increase this time, turn off non-essential pieces of equipment (such as idle computers and monitors) or add an optional external battery cabinet.

CAUTION: Turning off the UPS while in battery mode will result in loss of output power.

Once mains power is restored, the UPS resumes normal operation. At this time, the Battery Charger begins recharging the battery.

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Contents UPStation GXT Important Safety Instructions Glossary of Symbols Major Components Introduction and System DescriptionBattery Charger RECTIFIER/POWER Factor Correction PFC CircuitBattery InverterControls and Indicators Output OFF/BYPASS Button UPS ON/Alarm Silence/Manual Battery Test ButtonGXT 6 & 10 kVA Normal Mode OPERATION- UPS mode Battery Mode OperationOperating Modes Bypass Mode Operation Starting the UPS Powering Down the UPSOperation in Battery Mode Troubleshooting Audible Alarm Conditions Troubleshooting GuideProblem Cause Solution Troubleshooting Guide UPS Monitoring UPS Intelligent CommunicationsUPS Intellislot Communications Maintenance Installation Considerations Installation InstructionsInspection LocationAirflow Dissipation Output Input Current Rating Electrical Installation ConsiderationsElectrical Connections Connecting the UPS Power cables Connection of optional remote battery cabinetsOutput connections GXT 6000/10000-X models only Stabilisers/Levelling Feet UPS Remote shutdown option PIN Assignment Collector to EmitterSerial Communications Ferrite Bead InstallationCommissioning the UPS Output Voltage Selector SwitchesBattery Run Times Specifications GXT6000T-230X GXT10000T-230X Life Support Applications Limited WarrantyTechnical Support UPStation GXT