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13
Figure 11 REPO switch connections
5.4 External Battery Cabinet Installation
Optional Liebert external battery cabinets may be connected to the UPS to provide additional battery
run time. External battery cabinets are designed to be placed all on one side of the UPS or stacked
beneath the UPS. The run time is limited to a maximum of four (4) hours.
1. Visually inspect the external battery cabinet for freight damage. Report damage to the carrier
and your local dealer or Liebert representative.
2. The rack-mount handles are shipped with the external battery cabinet and may be installed at
this time (see 5.3 - Rack-Mount UPS Conversion and Installation).
3. Fixed rails and securing hardware ship with the external battery cabinet. Fasten the fixed rails
into position with the screws per the instructions included with the UPS. Repeat
Steps 1 through 10 from 5.3 - Rack-Mount UPS Conversion and Installation.
4. Use the support bases included with the UPS for the tower option to prevent tip-over. One
additional set of support base spacers ships with each external battery cabinet.
5. Connect the supplied external
battery cabinet cable to the rear of
the external battery cabinet, then to
the rear of the UPS, as shown at
right.
6. The UPS is now equipped with
additional backup battery run time.
For approximate battery run times,
refer to Table 5 - Battery run
times.
!
CAUTION
The external battery cabinet(s) are heavy (see 12.0 - Specifications). External battery
cabinets can be used in rack-mount or tower configuration. Take proper precautions when
lifting them.
REPO connections
for normally open
switch system
REPO Switch
as shipped
REPO connections
for normally closed
switch system (fail-safe)
1234
Key to REPO switch connections
1. 24 VDC,
2. Sense
3. Sense
4. Ground
REPO Connection
12341234
LOAD 2
INPUT
INPUT
BREAKER
PUSH TO RESET
PHONE / FAX / MODEM / NETWORK
PROTECTION
BATTERY
CONNECTOR
1440VA/DC 48V/30A
1000VA/DC 48V/20A
BATTERY
CONNECTOR
1440VA/DC 48V/30A
1000VA/DC 48V/20A
BATTERY
CONNECTOR
1440VA/DC 48V/30A
1000VA/DC 48V/20A
1
2
3
4
INTELLISLOT
LOAD 1
IN
OUT
+
-
REPO
RS-232