Liebert PSI is a feature-rich UPS system designed especially for today’s IT applications such as servers, storage, and networking equipment. Its high power output delivers superior performance on power factor corrected (PFC) power supply and satisfactory backup time in the high demand environment. Liebert Multilink UPS software protects servers through local USB communication or via network. Matching external battery cabinets offer UPS backup time to several hours in the extended requirements.

Features and Benefits Lowest Total Cost of Ownership Operates at a high 0.9 power factor that makes it ideal for today’s modern IT equipment, providing 29% more power than typical UPS Reduced installation time and costs — shipped with batteries connected and charged Two-year warranty — no-hassle replacement Supports Liebert Multilink shutdown software Higher Availability Greater than three minutes of internal battery backup time at 100% load provides ample time for an orderly shutdown of equipment. Buck/boost automatic voltage regulation technology protects against utility voltage fluctuation by raising and lowering utility power to the level needed by connected equipment Flexibility Eight to nine battery-backed outlets User replaceable and hot-swappable batteries Rack/Tower Convertible with rotatable display panel, 2U in height on all models Multiple remote communications and shutdown options provide remote monitoring and power management — WEB/SNMP, USB, contact closure and remote power off

The Liebert PSI is ideally suited for: Network Computers Servers Network Closets Computer Rooms Large Network Peripherals Network Storage Devices

Rotatable Display Panel 90 degrees rotatable LED display  panel rotates 90° to make the readout  of the LED display easy to see in rack  or tower position. Automatic Frequency Sensing The UPS automatically adjusts to the input frequency, 50Hz or 60Hz.

What's in the Box?

The Liebert PSI is shipped with the following items: 

• Multi-Language User Manual on CD
• Liebert MultiLink Software and User Manual, downloadable at multilink.liebert.com
• Contact Closure (ML9P9S) Cable
• USB Cable
• Tower Stand
• Mounting Hardware
• Rack-Mount Handles
• Fixed Mounting Rails
• EPO Connector
• Input Power Cord, 2200/3000 only: 2
• IEC Output Cable, 750/1000/1500 only: 2
• IEC Output Cable, 2200/3000 only: 3
• (1) Schuko to IEC-320-C19 and (1) UK plug to IEC-320-C19 input cord, 2200/3000 only
• (2) IEC-320-C13, 750/1000/1500 only
• (3) IEC-320-C13, 2200/3000 only

Accessories






Parts

 

Technical Specifications

Frequently Asked Questions

Why is Emerson launching line-interactive UPS?
Aren't online types better?

• Online UPs types are better than line interactive ones in terms of power regulation. Online UPS's have outstanding perfomance over poor power conditions such as rural areas and generator power.
• Many users, especially in places where power conditions are monstly stable and reliable, do not mind whether they use online or line-interactive designs. They look at other features such as runtime, power delivery, communications, size and other factors.

How does a UPS with higher power factor benefit users?

• UPS is rated both in VA and Watts. Exceeding the specified VA or Watts will cause the UPS to overload. 
• Modern servers and networking devices are equipped with Power Factor Corrected (PFC) power supply, whose pf is as high as 0.98. It means if power supply is rated at 100VA, it is also rated at 98W. 
• UPS’s with 1000VA/900Watts can support nine (9) of such devices. UPS’s with 1000VA/700Watts can only support seven (7) of such devices.

Can Liebert PSI have additional USB or RS232 ports?

• No. PSI has one (1) USB, one (1) contact closure, one (1) remote power off, and one (1) Liebert Intellislot out-of-box. There is no optional card with ports.

Is Liebert IS-WEBCARD compatible with Liebert PSI?

• Liebert PSI uses a new webcard, IS-WEBRT3, which is totally different from ISWEBCARD used by GXT2/GXT3. They are NOT interchangeable.

Can a Micropod for Liebert GXT2 be use with Liebert PSI?

• A Micropod is useful when there is UPS fault and it needs to replace UPS.
• Micropod can be used with Liebert PSI as far as electrical bypass is concerned. However, a Micropod needs to be rack mounted. It does not mechanically fit at the back of a Liebert PSI UPS.

What is the warranty period of Liebert PSI?

• Standard micro UPS warranty (usually 2 years) applies

What sets Liebert PSI apart from competition?

• High Power Factor in All Models
       ■ Pf 0.9 in all 5 ratings while competition may offer pf 0.9 on selected  models only and may cause confusion
• Rack / Tower Convertible in Slim size
       ■ Convenient rack / tower in slim 2U compact design
       ■ Tower stands and rail kits are bundled with Liebert PSI
• Micropod bypass switch increases availability