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7
INSTALLATION
Read Operation section to understand user controls and
displayed messages before beginning.
Operate UPS in a clean, controlled environment with
adequate airflow.
Exposure to excessive dirt or dust adversely affects UPS
operation.
Internal fans cool the UPS. The unit intakes air at the front
and exhausts it out the rear. Allow at least one foot of
space around UPS for air circulation. Operate UPS within
specified temperature and humidity limits.
Allow only authorized personnel to service UPS. Allow a
minimum of 3 feet access on both sides for rigid conduit
installations. Units that can be rolled forward for side
service access require no side access in their normal
position. Manual UPS operation and connection to UPS
receptacles requires rear access.
3.5-6 kVA Connections
See the figure to the right for connection locations.
CAUTION: A qualified electrician must review and
approve customer-supplied wiring, circuit breaker(s),
power outlet, and intended loads. Ensure correct line,
neutral, and ground connections, and that phase
rotation is phase A leads phase B. See Site Planning
Data and Table NEC Wire Specifications in the
Appendix.
3.5 - 6 kVA Liebert UPStation S™ systems include the
UPS and the AC unit. The unit provides connection to
both utility power and UPS output power through the use
of a simple Maintenance Bypass Switch. See the
Operation section for instructions on Maintenance
Bypass Switch use.
Input
The input power cord includes a NEMA L14-30 plug. The
cord is six feet long and rated for 30 Amps. Customer
supplied wiring must include an L14-30 receptacle and a
30 Amp circuit breaker.
Output
The POD contains the output receptacles.
3.5-6 kVA Single Line Diagram
AUTO / MANUAL BYPASS
SURGE
SUPPRESSION
AND EMI
FILTER
BATTERY
CHARGER
BATTERY
INVERTER
INVERTER
AUTO / MANUAL
BYPASS
EMI
FILTER
FRONT END CONVERTER
G
L1, L2
L1, L2
N
N
G
L1, L2
N
MAINT.
BYPASS
SWITCH
POD
TO EXTENDED
BATTERY
CABINETS
Optional SNMP
Interface
Input Fuses
(30A) (F1,F2)
Bypass Switch
REPO Connection
Battery Fuses
(30A) (F3,F4)
Output Circuit
Breaker (30A)
External Battery
Cabinet Connector
DB25
Communications
Connector
(RS-232, AS/400, LANs)
Variable Speed Fan
POD Guidepin w/nut
POD Connectors
External Power
Management
Load Module
Communications
Connector
Guidepin w/nut
Caster
3.5-6 kVA
REAR VIEW