Liebert PSITM user manual Relay, Major Components, Input

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Major Components

3.0MAJOR COMPONENTS

Figure 4 Line diagram of PowerSure PSI 1000VA & 1440VA

Input

EMI/RFI

Relay

 

 

Filter

 

 

Charger

Battery

AVR

Transformer

Inverter

Output

G

G

Figure 5 Line diagram of PowerSure PSI 2200VA & 3000VA

Input

EMI/RFI

Relay

AVR

 

Filter

Transformer

 

 

Charger

Battery

DC-to-DC

Converter

 

 

Output

Bi-Directional

Converter

G

G

3.1Transient Voltage Surge Suppression (TVSS) and EMI/RFI Filters

These UPS components provide surge protection and filter both electromagnetic interference (EMI) and radio frequency interference (RFI). They minimize surges or interference present in the mains line and keep the sensitive equipment protected.

3.2Relay

In Normal mode the Relay passes mains AC power to the connected load. When input mains voltage or frequency is outside acceptable limits, the Relay activates and transfers the UPS to battery.

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Contents PowerSure PSI Power AvailabilityPage Table of Contents Figures Important Safety Instructions Safety PrecautionsPage Glossary of Symbols Voltage Programming ButtonIntroduction Front view of UPSAC Input External BatteryRS232 DB-9 Cabinet Connector Port USB PortMajor Components RelayInput Automatic Voltage Regulator Battery ChargerBattery Inverter-1000/1440 Models OnlyWHAT’S Included Installation Tower UPS InstallationPreparation Rack-Mount UPS Conversion and Installation Two 2 M4x6 Flat Head Screws Rack Mount HandlesWasher M5x12 Flat Screw Vertical overlay for towerOption 1 Serial Communications RJ11/RJ45 connectionExternal Battery Cabinet Installation Key to Repo switch connections 24 VDC Sense GroundAll indicators illuminated For illustrative purposes only ON/Alarm Silence/Battery Test ButtonControls and Indicators OFF ButtonAC Input Indicator-Green Load Level Indicators-4 green, 1 amberBattery Level Indicators-5 green Buck/Boost Indicator-GreenOver Temp Indicator-Amber Fault Indicator-RedMains power present Within operational limits Normal ModeBuck/Boost Mode Indicator shows UPS in Boost Mode solid greenBattery Indicator illuminated Battery ModeBattery Recharge Operation Battery Indicator flashes greenCommunications DB-9 ConnectorRemote Shutdown Via the DB-9 Connector DB-9 pin assignmentUSB Interface Port Data Line Protection ConnectorsUPS Intelligent Communications Load Level Indicators Voltage Programming Button Voltage Programming ProcedureInput Voltage Output Voltage Setting Range Battery Mode Maintenance Cleaning the UPSBattery Replacement Maintaining BatteriesInternal Battery Replacement Procedure Troubleshooting Status indicatorsTroubleshooting chart Problem Cause SolutionSpecifications UPS specificationsSee Battery run times Environmental Battery cabinet specificationsBattery Parameter Model Number PS1000RT2-230 PS1440RT2-230 PS2200RT2-230Battery run times Page Locations Technical Support/ServiceCompany Behind the Products Asia 23F, Allied Kajima Bldg

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.