Operation

4.0OPERATION

This section describes checks to be made before starting the UPS, how to start the UPS, manual battery test, manual bypass, shutting down the UPS and disconnecting the utility power from the UPS.

NOTE

The Liebert® GXT3™’s battery has been fully charged before delivery, but some charge will be lost during storage and shipping. To ensure that the battery has adequate reserve power to protect the connected load, charge the battery for three hours before putting the UPS into service.

4.1Startup Checklist for the Liebert GXT3

Before starting the UPS, perform these checks:

___ 1. Check that the input plugs and loads are connected properly and reliably.

___ 2. Check that all of the battery cables are connected properly.

___ 3. Check that the communication cables are connected properly.

4.2Starting the UPS

1.Turn On the input circuit breaker—see Figures 3 and 5 for its location.

2.Turn On the UPS by pressing the On/Alarm Silence/Manual Battery Test button for three seconds.

After the button is pressed, the LEDs on the display will signal that the unit has initiated the startup process.

3.Once the inverter LED has been illuminated, turn On the connected loads.

4.Check the status indicators to determine whether the Liebert GXT3 is operating normally.

5.Check the load level indicators to verify that the connected load does not exceed the UPS’ rated capacity.

The UPS is now providing conditioned power to the load.

4.3Manual Battery Test

To initiate a manual battery test, press the On/Alarm Silence/Manual Battery Test button for at least half a second while operating from utility power with no alarm conditions present.

•If only first two of the five LED segments illuminate, allow the UPS to recharge the batteries for 24 hours.

•Retest the batteries after 24 hours of charging the batteries.

•After the batteries have been retested, if only two of the five Battery LEDs illuminate, contact your local Emerson representative or Emerson Channel Support.

•If none of the five Battery LEDs illuminate during a manual battery test, check the battery con- nection and allow the UPS to recharge the batteries for 1 hour and initiate a manual battery test again.

•If none of the five Battery LEDs illuminate during the manual battery test a second time, replace the batteries, and contact your local Emerson representative or Emerson Channel Support.

4.4Manual Bypass

Press the Standby/Manual Bypass button once while the UPS is in utility (AC) mode and hold it for about 2 seconds. The UPS will transfer the connected loads to the internal bypass. If the internal bypass is not available due to utility power problems, pressing this button once will be ignored. Bypass operation is indicated by an audible alarm and illuminated amber Bypass indicator. If other indicators are illuminated, refer to 7.0 - Troubleshooting.

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Emerson 208V Startup Checklist for the Liebert GXT3, Starting the UPS, Manual Battery Test, Manual Bypass, Operation
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GXT3, 208V specifications

The Emerson 10-30 kVA, 208V uninterruptible power supply (UPS) solution is a robust system designed to provide reliable power protection for critical applications in commercial and industrial settings. This UPS is ideal for safeguarding IT equipment, communication systems, and other sensitive electronics against power disturbances and interruptions.

One of the standout features of the Emerson 10-30 kVA UPS is its modular design, allowing for flexibility and scalability. This means that as the power needs of a facility grow, the UPS can be easily expanded without requiring a complete system overhaul. This modularity contributes to a more efficient use of resources and minimizes operational costs.

The UPS also incorporates advanced technologies such as double-conversion online architecture, which provides the highest level of power quality. This technology ensures that the output power is consistently clean and stable, effectively eliminating harmful voltage fluctuations and frequency variations. Consequently, connected load receives a pure sine wave output, preventing potential damage or operational issues with sensitive equipment.

Another key feature is the high efficiency rating of the Emerson UPS, which exceeds 95 percent in typical operating conditions. This high efficiency translates to reduced energy costs and a smaller carbon footprint, aligning with modern sustainability goals. The cooling system is designed to be efficient as well, ensuring optimal performance while maintaining a compact footprint.

The user-friendly interface enhances operability, featuring an intuitive LCD display that allows for easy monitoring of critical power parameters. Users can access real-time data related to battery health, load levels, and operational status, which aids in effective management of the power supply.

Battery management is another critical aspect of the Emerson UPS. It employs advanced battery management technologies to ensure optimal battery life and performance. Features such as intelligent battery testing and monitoring help predict potential battery failures before they occur, allowing for proactive maintenance and minimized downtime.

In summary, the Emerson 10-30 kVA, 208V UPS offers a combination of modularity, high efficiency, advanced technologies, and effective power management features that cater to the demanding needs of critical applications. With its reliable performance and user-friendly operation, this UPS solution is an excellent choice for organizations looking to protect their valuable equipment from power disturbances.
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