Modes of Operation

7.3Battery Mode

The UPS switches to Battery mode in the event of an extreme input voltage/frequency condition or complete utility failure. The battery system supplies power through the Inverter (1000VA & 1440VA) or through the DC-to-DC converter to the Bi-Directional Converter (1920, 2200VA and 3000VA) to generate power for the connected equipment.

When the UPS is in Battery mode, the Battery Indicator illuminates green and an alarm sounds every 10 seconds. As capacity decreases, fewer indicators remain illuminated. Figure 16 shows the UPS in Battery mode with 61% - 80% battery capacity remaining.

Figure 16 Battery mode at 61 – 80% battery capacity

Battery Indicator illuminated

When a low battery condition occurs, the Battery Indicator flashes green and the alarm sounds every half-second. The default low battery warning is two (2) minutes but can be configured via MultiLink. For more information, refer to Troubleshooting section.

Figure 17 Low Battery mode

Battery Indicator flashes green

For approximate battery run times, refer to Table 5 - Battery run times. These run times are approximates based on resistive load and an ambient temperature of 77°F (25°C). To increase this time, turn Off non-essential pieces of equipment, such as idle computers and monitors, or add exter- nal battery cabinets.

! CAUTION

Turning Off the UPS while it is in battery mode will result in loss of output power.

7.4Battery Recharge Operation

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

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Liebert 1000 - 3000VA 60 Hz 120V user manual Battery Mode, Battery Recharge Operation

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.