Liebert 1000 - 3000VA 60 Hz 120V user manual Normal Mode, Buck/Boost Mode, Modes of Operation

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Modes of Operation

7.0MODES OF OPERATION

7.1Normal Mode

During Normal mode operation, the PowerSure PSI supplies conditioned, computer-grade power to the connected equipment: utility power passes through the TVSS circuitry and the EMI/RFI filters and then through the Inverter (1000VA & 1440VA) / Bi-Directional Converter (1920VA, 2200VA and 3000VA) to connected equipment.

When the UPS is in Normal mode, the AC Input Indicator illuminates green. The UPS display in Figure 14 shows the UPS operating in Normal mode with 26% - 50% load connected to the output.

Figure 14 Normal mode operation with 26-50% load

Utility power present ...

... and within operational limits

The PowerSure PSI continuously monitors the batteries to maintain them in a fully charged state. The battery charger operates whenever AC power is present, even if the UPS is switched Off. By default, the UPS is set to perform an automatic battery test after it has been operating continuously for two (2) weeks. The automatic battery test can be disabled via MultiLink.

7.2Buck/Boost Mode

The Automatic Voltage Regulator (AVR) circuitry compensates for fluctuations in utility power, such as voltage surges and sags. When the PowerSure PSI detects an abnormality, it raises the undervolt- age (boost) or lowers the overvoltage (buck) as needed. The AVR operates automatically and main- tains the output voltage to the connected critical equipment, without utilizing the batteries.

The Buck/Boost Indicator flashes green when the UPS is operating in Buck mode and illuminates green when the UPS is operating in Boost mode (see Troubleshooting section for details).

Figure 15 Buck/Boost mode operation with 51-75% load and 21-40% battery capacity

Indicator shows UPS in Boost Mode (solid green)

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Contents Liebert PowerSure PSI Page Table of Contents Communications Product Warranty RegistrationFigures Page Safety Precautions Important Safety InstructionsBattery Handling Precautions Glossary of Symbols Front view of UPS Introduction3000VA PSI-rear view Major Components RelayInverter-1000/1440 Models Only Battery ChargerBattery Automatic Voltage RegulatorWHAT’S Included Preparation Tower UPS InstallationInstallation Rack mount handles Rack-Mount UPS Conversion and InstallationRack mounting rails and slide assemblies Option 1 Serial Communications Repo switch connections External Battery Cabinet InstallationOFF Button ON/Alarm Silence/Battery Test ButtonControls and Indicators Buck/Boost Indicator-Green Load Level Indicators-4 green, 1 amberBattery Level Indicators-5 green AC Input Indicator-GreenFault Indicator-Red Over Temp Indicator-AmberModes of Operation Normal ModeBuck/Boost Mode Battery Recharge Operation Battery ModeCommunications DB-9 ConnectorRemote Shutdown Via the DB-9 Connector UPS Intelligent Communications Data Line Protection ConnectorsUSB Interface Port Utility power will be applied to the connected load Voltage Programming ProcedureMaintaining Batteries Cleaning the UPSBattery Replacement MaintenanceInternal Battery Replacement Procedure Status indicators TroubleshootingTroubleshooting chart Problem Cause Solution UPS specifications SpecificationsBattery cabinet specifications Battery run times Product Warranty Registration Site Nic

1000 - 3000VA 60 Hz 120V specifications

The Liebert 1000 - 3000VA 60 Hz 120V is an uninterruptible power supply (UPS) designed to protect critical electronic equipment and ensure uninterrupted operation in various settings. Ideal for small to medium-sized businesses, the Liebert UPS offers reliable power protection with its compact and efficient design.

One of the main features of the Liebert 1000 - 3000VA is its advanced battery technology. Equipped with high-performance sealed lead-acid batteries, this UPS ensures long-lasting power backup while requiring minimal maintenance. The smart battery management system intelligently monitors battery health, extending overall battery life while providing precise notifications for replacement, thus optimizing operational efficiency.

Another critical characteristic is its online double-conversion technology. This feature provides consistent and clean power by converting incoming AC power to DC and then back to AC again. This process effectively eliminates any electrical noise or power fluctuations, protecting sensitive electronics from interruptions or damage caused by power surges, spikes, or drops. As a result, workloads can operate without concern for potential power issues.

The Liebert UPS is designed with user-friendliness in mind. Featuring a clear LED display, it allows users to easily monitor performance metrics such as load level, battery health, and runtime status. In addition, the intuitive control panel simplifies operation and navigation through settings, making it accessible to users without extensive technical knowledge.

This UPS also offers flexibility with multiple outlet options. The Liebert 1000 - 3000VA includes a combination of NEMA outlets, providing compatibility with various equipment types, from servers and routers to networking devices and communications equipment. This versatility ensures that it meets diverse power requirements within any environment.

Moreover, the compact form factor enables installation in tight spaces while maintaining robust performance. Its efficient design facilitates heat dissipation, ensuring optimal operation without overheating.

The Liebert 1000 - 3000VA 60 Hz 120V UPS delivers excellent protection for critical equipment across various industries, including telecommunications, healthcare, and finance, ensuring operational continuity. With its advanced features, reliable technologies, and user-centered design, it stands out as a reliable choice for any organization seeking to safeguard its power supply infrastructure.
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