AC Power
For Business-Critical Continuity™
Liebert® PSI
High Performance Rack-Mount UPS For Network Power Protection
Liebert PSI is a compact, line-interactive UPS system
designed especially for IT applications such as network
closets and small data centers. It provides reliable
power protection for servers, critical nodes, network
workstations, large network peripherals, network
routers, bridges, and other electronic equipment.
Liebert PSI allows you to get more from your UPS and your protected
equipment, with features normally found only on more expensive systems:
Up to five minutes of internal battery backup time at full load provides ample time for an orderly shutdown of connected equipment.
Liebert PSI operates at a higher output power factor — meaning less
power consumption. This results in your network running at lower
power levels and lower heat levels, and ultimately provides a longer
network service life.
Remote communications and shutdown options provide remote
monitoring and power management — contact closure, USB, SNMP
Liebert PSI is compliant with the Restriction of Hazardous
Substances Directive (RoHS), prohibiting use of six hazardous
materials manufacturing of electronics, including lead-free solder.
Ideally suited for:
Network workstations
Network closets
Large network peripherals
Reliable UPS ProtectionTo Keep Your Network Up And Running
The flexible design of Liebert PSI allows the UPS
Liebert PSI Standard Features:
to be configured as a self-standing tower or to be
rack-mounted within a 2U space. It is available in
Eight battery-backed outlets
four capacities, and both 120V or 230V models.
Allows the Liebert PSI to be more flexible in accommodating
additional equipment to be connected to the UPS via the 15 or
20 Amp receptacles.
The UPS features an innovative line-interactive design incorporating
buck/boost automatic voltage regulation technology. This protects against
utility voltage fluctuation by raising and lowering utility power to the level
needed by the connected equipment. It also allows the UPS to prolong
battery life by maximizing its time on utility power before going to battery.
Configurable input voltage window
Allows the UPS to be properly matched to the incoming utility
power and adjusts its input window and transfer points to
supply precisely regulated power to connected loads within the
selected range. Also enables the UPS to meet the required input
voltage when transferring to battery.
Rotatable Display Panel
90° 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.
Rack Rail Kit
These telescoping rails mount to the sides of the UPS to facilitate
installation into a rackmount enclosure.
DIP Switch
Data Line
Optional Liebert IntelliSlot Web
Card provides SNMP
and web-based
Higher Availability:
Lowest Total Cost Of Ownership:
Data line surge protection
Network surge protection for equipment
connected to the UPS via the RJ-45.
Advance early warning of
UPS system status
The Liebert PSI offers multiple audible and
visual alarms to immediately alert
you to an input voltage fluctuation
(buck/boost), output overload, low
battery or replace battery condition.
Up to five minutes of
battery backup time at full load
when utility fails
Provides ample time for an orderly
shutdown of connected equipment.
Full sequenced battery testing
The Liebert PSI provides a manual selfdiagnostic test feature. This provides a
comprehensive analysis of the condition of
the batteries within the UPS and will notify
you when the internal batteries need to be
replaced. The battery test feature can also
be programmed for automatic operation
using Liebert IS-WEBRT3 card.
0.9 Output Power Factor
Liebert PSI operates at a higher output power factor -meaning less power consumption. This results in your
network running at lower power levels and lower heat
levels, and ultimately provides a longer network service life.
Wider input voltage window
Prolongs battery life by allowing the UPS to maximize the
use of utility power before transferring to battery when
input voltage exceeds specified limits.
Reduced installation time and costs
Warranty Protection
Standard two-year warranty ensures UPS replacement if
problems occur during the warranty period. Optional
one-year and three-year extensions also available.
Contact Closure Communication Option
Automated shutdown software allows you to monitor
communication between the UPS and a server. It also
ensures a graceful unattended shutdown in the event
of an extended power failure.
USB Communications
Windows (98 and later) built-in power management functions
provide monitoring of UPS status and manage the automatic
orderly shutdown of the computer if a power outage ever
exceeds the battery capacity of the UPS. Liebert MultiLink
Remote emergency power off
Liebert IntelliSlot® IS-WEBRT3 Web Card provides SNMP and
web-based management to your Liebert PSI. Provides
SNMP MIB to monitor and control your UPS from your network
management station or any PC running Microsoft Internet Explorer.
Increase product life and provide
prolonged UPS reliability. Batteries
are conveniently located behind
the front bezel of the unit.
Optional Liebert MicroPOD
Output Distribution And
Maintenance Bypass Module
Multiple Choices For Communication,
Shutdown And Reporting:
The transient voltage surge suppression
(TVSS) circuitry inside the Liebert PSI
provides protection for the connected
equipment from incoming spikes, surges,
and other power anomalies present on
the incoming utility power source.
Hot swappable batteries
Liebert PSI-W is the standard
Liebert PSI made network–ready
with a factory-installed Liebert IntelliSlot
IS-WEBRT3 Web Card for SNMP
communications. This totally integrated,
cost-efficient solution allows remote
monitoring, start-up or restart for
connected equipment.
UPS is shipped with batteries connected and charged.
Surge protection
Allows the UPS to be remotely shut
down during an emergency.
Liebert PSI-W Network
Solution Package With
Built-In Communications
Shutdown Software is provided.
SNMP Communication Option
Network shutdown
Sends both SNMP traps and emails for event notification,
and automatically emails a daily UPS history.
When your computer system can’t be
without power, even for scheduled UPS
maintenance, the Liebert MicroPOD
Maintenance Bypass and Output
Distribution Unit ensures continuous
uptime. It allows you to manually transfer
connected equipment to utility power via
a maintenance bypass switch, permitting
scheduled service or UPS replacement
without the need to shut down connected
equipment. Features include:
2U height minimizes rack
space requirements
Installs with plug-and-play ease
Two-year, no-hassle
replacement warranty
Auto-senses 10M/100M Ethernet
Compatible with shutdown software to ensure
graceful computer shutdown
Liebert PSI XR Specifications
Model Number
Network Solutions Package Number
Power Rating, VA/W
Dimensions, W x D x H, in (mm)
Weight, lb (kg)
Input AC Parameters
Surge Protection
Voltage Range Without Battery
Frequency Range
Input Power Cord, 10ft (3m)
Output Receptacles
Voltage (Normal Mode)
Voltage (Battery Mode)
Transfer Time
Battery Waveform
Battery Parameters
Recharge Time
Battery Backup Time
Full Load
Half Load
Operating Temperature, ˚F (˚C)
Storage Temperature, ˚F (˚C)
Relative Humidity
Operating Altitude
Audible Noise
Network Surge
Rail Kit (included)
Rail Kit
Liebert Corporation
17.3 x 16.2 x 3.5
(440 x 412 x 88)
22 x 24.1 x 9 (560 x 612 x 228)
17.3 x 16.2x 3.5
(440 x 412 x 88)
22 x 24.1 x 9 (560 x 612 x 228)
43 (20)
51 (23)
47 (21)
54 (25)
17.3 x 25.9 x 3.5
17.3 x 25.9 x 3.5
(440 x 657x 88)
(440 x 657x 88)
22 x 34.8 x 9.0 (560 x 884 x 228) 22 x 34.8 x 9.0 (560 x 884 x 228)
76 (35)
84 (38)
84 (38)
93 (42)
83 to 159 VAC (configurable)
NEMA 5-15P plug
45~65Hz, (0.5Hz)
NEMA 5-15P plug
NEMA 5-20P plug
(8) NEMA 5-15R
(8) NEMA 5-15R
NEMA L5-30P plug
(6) NEMA 5-15R (2) NEMA 5-20R (6) NEMA 5-15R (2) NEMA 5-20R
T-Slot, accepts 15A Plug
T-Slot, accepts 15A Plug
110/120/127 VAC (configurable)
110/120/127 VAC; 5% before low-battery warning
4-6 ms typical
Valve-regulated, non-spillable, lead acid
5 hours to 90% of rated capacity, after full discharge into resistive load
4 min
12 min
3 min
9 min
3 min
11 min
1050 Dearborn Drive
P.O. Box 29186
Columbus, Ohio 43229
800 877 9222 Phone (U.S. &
Canada Only)
614 888 0246 Phone (Outside U.S.)
614 841 6022 FAX
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD)
39 049 9719 111 Phone
39 049 5841 257 FAX
Emerson Network Power Asia Pacific
29/F, The Orient Square Building
F. Ortigas Jr. Road, Ortigas Center
Pasig City 1605
+63 2 687 6615
+63 2 730 9572 FAX
3 min
9 min
32 to 104 (0 to 40)
5 to 104 (-15 to 40)
0% to 90%, non-condensing
Up to 10,000 ft (3000m) at 95˚F (35˚C) without derating
<40 dBA, internal fan(s) Off; <45 dBA, internal fan(s) On
UL 1778, c-UL Listed
FCC Part 15, Class A
UL 497 B
ISTA Procedure 1A Certification
24 x 7 Tech Support
800 222 5877 Phone
614 841 6755 (outside U.S.)
While every precaution has been taken to ensure accuracy and
completeness in this literature, Liebert Corporation assumes no
responsibility, and disclaims all liability for damages resulting
from use of this information or for any errors or omissions.
© 2009 Liebert Corporation. All rights reserved throughout
the world. Specifications subject to change without notice.
All names referred to are trademarks or registered trademarks
of their respective owners.
® Liebert is a registered trademark of the Liebert Corporation.
SL-23318 (R09/09)
NEC limits the input current rating of the 2200VA model to 80% of the input plug’s rating. If 1920 or more is required, contact a certified electrician to change the input plug to
30A plug. Emerson Network Power assumes no liability for damage caused by miswiring or misapplication of the input plug.
Printed in USA
Emerson Network Power.
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©2009 Emerson Electric Co.