User Manual 10H52188UM51 - Rev. 1 - 09/2011
19
Liebert NXC
Single UPS Installation and Commissioning
Figure 2-5 3-in 3-out, split-bypass configuration cable connection
3-in 1-out, common source configuration
Warning
The factory default of this UPS is 3-in 3-out, common source configuration. Change the power distribution mode of the UPS to 3-in
1-out according to the steps described in the following section Changing power distribution mode. Continue the following input and
output power cable connection and power-on commissioning after confirming that the change has been successful.
1. Confirm that the power distribution mode of the main UPS has been changed to 3-in 1-out according to the steps described
in the following section Changing power distribution mode.
2. As shown in Figure 2-6, paste the insulating film (accessory) on the copper shorting bar 10, and insert the buckles into the
corresponding holes on the copper shorting bar 10.
Assembling
Completed status
Insulating film
Copper shorting
Buckle
bar 10
Figure 2-6 Pasting the insulating film to the copper shorting bar 10
3. As shown in Figure 2-7, short connect U2, V2 and W2 terminals using the copper shorting bar 7, short connect the PE
terminals of the I/O terminal block of the UPS using the copper shorting bar 10 with insulating film, short connect U3, V3 and
W3 terminals using the copper shorting bar 5, short connect U1 and U2 terminals using the copper shorting bar 6, short
connect N1 and N2 terminals, and two N3 terminals using the two copper shorting bar 4.
UPS MODULE
INTERNAL BATTERY
RECT
INV
CHARGER
COMMUNICATION
PORTS
OP. AND DISP.
PANEL
OUT
P
UT
MA
IN
S IN
PU
T
EX
T.
B
A
TT
E
R
Y
STS
BY
P
A
S
S
I
N
P
U
T
Buckle
Assembling
Insulating film
Completed status
Copper shorting
bar 10
