Product Description

Battery Charger

The battery charger utilizes energy from the utility power and precisely regulates it to continuously float charge the batteries. The batteries are being charged whenever the Liebert® GXT3™ is plugged in, even when the UPS is not turned On.

DC-to-DC Converter

The DC-to-DC converter raises the DC voltage from the battery to the optimum operating voltage for the inverter. This allows the inverter to operate continuously at its optimum efficiency and voltage, thus increasing reliability.

Battery

The Liebert GXT3 uses valve-regulated, nonspillable, lead acid batteries. To maintain battery design life, operate the Liebert GXT3 in an ambient temperature of 32°F to 77°F (0°C to 25°C).

Optional external battery cabinets are available to extend battery run times.

Dynamic Bypass

The Liebert GXT3 provides an alternate path for utility power to the connected loads in the unlikely event of a UPS malfunction. Should the Liebert GXT3 have an overload, overtemperature or UPS failure condition, the UPS automatically transfers the connected loads to bypass.

NOTE

The bypass power path does not protect the connected loads from disturbances on the utility.

1.5Operating Mode

The UPS operation modes include: Utility (AC) mode, bypass mode, battery mode, battery recharge mode and frequency converter mode.

For the descriptions of indicators and control buttons in this section, refer to 3.0 - Controls and Indicators.

1.5.1Utility (AC) Mode

During Utility (AC) Mode, utility power provides energy to the Liebert GXT3. The filters, PFC circuit and the inverter process this power to provide computer-grade power to connected loads. Meanwhile, the UPS maintains the batteries in a fully charged state.

1.5.2Manual Bypass Mode

Manual Bypass Mode occurs when the Standby/Manual bypass button is pressed and held for about 2 seconds while the Liebert GXT3 is in Utility (AC) Mode. Bypass operation is indicated by an audible alarm and illuminated amber bypass indicator (If other indicators are illuminated, refer to 7.0 - Troubleshooting). During manual bypass mode, utility power bypasses the inverter and provides energy to the connected load.

NOTICE

Turning Off the UPS in bypass mode will result in loss of output power and dropped loads.

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Emerson 208V, GXT3 user manual Operating Mode
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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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