Controls and Indicators

6.3Voltage Programming Button

The PowerSure PSI contains a Voltage Programming button that allows the operator to select the nominal mains voltage. This setting changes the mains transfer points (low and high) of the UPS and the nominal output voltage when operating in Battery mode. The operator can select between 220, 230 and 240VAC output. The factory-default setting is 230VAC.

The Voltage Programming button is a push button type and is behind the plastic bezel on the front panel of the UPS. To access the button, the front bezel must be removed.

6.4Load Level Indicators—4 green, 1 amber

The Load Level Indicators display the approximate electrical load placed upon the UPS. The UPS Load Level Indicators are displayed in 25% increments as shown in Figure 11.

Figure 11 Load level indicators—4 green, 1 amber

Upon detection of an output overload condition, the amber overload (>100%) indicator flashes and an audible alarm activates. If the UPS shuts down due to an overload condition, the amber overload (>100%) indicator illuminates (see 11.0 - Troubleshooting for details).

6.5Battery Level Indicators—5 green

The Battery Level Indicators display the approximate battery capacity.

The approximate battery capacity is displayed when the UPS is operating in Normal, Buck/Boost, or Battery mode.

The Battery Level Indicators are displayed in 20% increments as shown in Figure 12:

Figure 12 Battery level indicators—5 green

The PowerSure PSI is equipped with automatic and remote battery test features. The automatic test occurs every 14 days if mains has not been interrupted; this option may be configured by the user. Should the battery fail this test, the amber Battery Indicator will be illuminated and an alarm will sound (see 11.0 - Troubleshooting for details).

The remote test feature functions with MultiLink 3.x software and can remotely initiate the battery test.

6.6AC Input Indicator—Green

The AC Input Indicator illuminates when mains power is available and within the input specifica- tions.

6.7Buck/Boost Indicator—Green

The Buck/Boost Indicator illuminates when the UPS is operating in Boost mode to compensate for a low mains voltage condition. This indicator flashes when the UPS is operating in Buck mode to com- pensate for a high mains voltage condition (see 11.0 - Troubleshooting for details).

6.8Battery Indicator—Green/Amber

The Battery Indicator illuminates green when the UPS is operating on battery and flashes green when a low battery condition occurs. The Battery Indicator illuminates amber when a bad battery is detected, indicating that the batteries need to be replaced (see 11.0 - Troubleshooting for details).

15

Page 19
Image 19
Liebert PSITM Voltage Programming Button, Load Level Indicators-4 green, 1 amber, Battery Level Indicators-5 green

PSITM specifications

The Liebert PSITM is an advanced power protection system designed to ensure the reliability and efficiency of critical systems in data centers, industrial applications, and mission-critical environments. As the demand for uninterrupted power supply continues to grow, the Liebert PSI serves as an indispensable asset.

One of the main features of the Liebert PSI is its online double-conversion technology. This method guarantees a continuous supply of clean and stable power to connected loads by converting incoming AC power to DC, then back to AC. This process eliminates power disturbances such as voltage sags, surges, and harmonics, ensuring that sensitive equipment operates without interruption.

In addition to its robust power protection capabilities, the Liebert PSI offers scalable solutions to meet varying power requirements. Ranging from 5 kVA to 40 kVA, it can be configured for single or three-phase operation. This flexibility allows businesses to tailor the system to match their specific needs, whether they are expanding data center operations or simply upgrading existing infrastructure.

Another notable characteristic of the Liebert PSI is its energy efficiency. The unit is designed to operate with a high efficiency of up to 94%, which not only reduces operational costs but also minimizes the environmental impact. Moreover, it features an eco-mode that optimizes energy use during non-critical operations without sacrificing reliability.

The Liebert PSI is equipped with advanced communication and management capabilities. It includes an intuitive LCD display for real-time monitoring, enabling users to access vital information about the unit's performance and status. Additionally, it supports various communication protocols such as SNMP and Modbus, allowing for seamless integration into existing management systems.

Furthermore, the Liebert PSI is designed with an emphasis on modularity, allowing for easy upgrades and maintenance. This modular approach reduces downtime and enhances serviceability, ensuring that the system remains reliable throughout its lifecycle.

In summary, the Liebert PSITM stands out as a comprehensive power protection solution that combines cutting-edge technology, energy efficiency, and user-friendly features. Its commitment to safeguarding critical systems against power disturbances makes it a vital component in the infrastructure of any modern data center or industrial setting.