Specifications

521
Optional Liebert MicroPOD 2U POD
output distribution and maintenance
bypass module ensures continuous
uptime, even during UPS maintenance.
DB-9
Port
Voltage
Configuration
DIP Switch
USB
Port
RJ-45
Data Line
Connectors
Liebert
IntelliSlot
Port
Input
Circuit
Breakers
Output
Circuit
Breakers Receptacles
Liebert PSI UPS With Internal Battery
DB-9
Port
Voltage
Configuration
DIP Switch
EPO USB
Port
RJ-45
Data Line
Connectors
External
Battery
Connector
Power
Cord
Liebert
IntelliSlot
Port
Input
Circuit
Breakers
Output
Circuit
Breakers Receptacles
Optional External Battery Cabinet
Add up to six cabinets for additional runtime
Liebert PSI-XR UPS With Internal Battery
Liebert Power Monitoring
Capabilities
The operation of Liebert PSI can
be monitored using:
Liebert MultiLink
®
Automated
System Shutdown Software.
Liebert Nform Monitoring System.
For more information,
see pages 44 and 45.
Line-Interactive UPS With Power-Factor Correction
TVSS &
EMI/RFI
Filter
AVR &
Transfer
Switch
Source Load
Battery
Bi-directional
Converter
Optional Liebert
IntelliSlot Web Card
(PS ISWEBCARD)
provides SNMP and
web-based
management
Rack-Mount UPS
21