Emerson Liebert NXC User Manual page 29

Single UPS Installation And Commissioning
Figure 3-8 3-in 1-out, common source configuration cable connection
4. Connect the copper shorting bar 8 to one end of the copper shorting bar 7 (see Figure 3-8), and connect the live line (input
phase L1) to the copper shorting bar 8.
5. Connect the live lines (input phase L2 and input phase L3), N line and PE line respectively to the I/O terminal block (V1 and
W1 terminals) of the UPS, one screw hole of the copper shorting bar 4 with N1 and N2 terminals, and one screw hole of the
copper shorting bar 10.
6. Connect the output L line, N line and PE line respectively to the copper shorting bar 5, copper shorting bar 4 with two N3
terminals, and the other screw hole of the copper shorting bar 10.
 3-in 1-out, split-bypass configuration
The factory default of this product is 3-in 3-out, common source configuration. Change the power distribution mode of the main 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 3-7, attach the self-adhesive insulating film (accessory) on the copper shorting bar 10, and insert the
buckles into the corresponding holes on the copper shorting bar 10.
3. As shown in Figure 3-9, short connect the two PE terminals of the I/O terminal block of the UPS using the copper shorting
bar 10 with insulating film, short connect U2, V2 and W2 terminals using the copper shorting bar 7, short connect U3, V3 and
W3 terminals using the copper shorting bar 5, short connect N1 and N2 terminals, and two N3 terminals using the two copper
shorting bar 4.
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Warning
User Manual 10H52188UM60 - Rev. 2 - 09/2012
Liebert NXC