Chapter 2 Single UPS Installation And Commissioning 17
Liebert
®
ITA 5kVA And 6kVA UPS User Manual
Cable entry hole
(6 pcs,with plate )
Figure 2-23
Protective
cover B of the I/O terminal block
Before installing the protective cover B of the I/O terminal block, remove the iron plates on the cable entry holes, and
install the bushings (label: 21101494, accessories). After the cable connection, fix the protective cover B of the I/O
terminal block.
According to user’s requirements, the I/O cable connections are divided into two types: 1-in 1-out (factory default) and
3-in 1-out.
The I/O cable connection procedures of the self-distribution for the two types are described in the following.
1-in 1-out (factory default)
1. Make sure that all the external I/O MCBs of the UPS are open.
2. Remove the protective cover A of the I/O terminal block.
3. Remove the plates on three cable entry holes of the protective cover B according to the cable direction.
4. Pass all the cables to be connected to the I/O terminal block through the cable entry holes of the protective cover B
according to the actual situation.
5. Connect the main input N line, L line and PE line respectively to the input neutral line terminal, input live line terminal
(U), input ground line terminal of the UPS I/O terminal block, and tighten the fixing screws. Short the input live line
terminal (V), input live line terminal (W) and input live line terminal (U1) using the shorting wire (label: W01), as shown
in Figure 2-19.
6. Connect the output L line, N line and PE line respectively to the output live line terminal, output neutral line terminal
and output ground line terminal of the UPS I/O terminal block, and tighten the fixing screws, as shown in Figure 2-19.
7. Install the protective cover B of the I/O terminal block.
Paralleled address
Control port
Input switch
230/400Vac-40A
In
te
llis
lo
t
Battery port
192Vdc 27A
-
PE
+
N L
PE
Input
PE L N
Output
Shorting wire (label: W01)
Figure 2-24 Cable connection for 1-in 1-out
3-in 1-out
Warning
The default power distribution mode of this UPS is 1-in 1-out. If 3-in 1-out is needed, you should switch from 1-in 1-out to 3-in 1-out
according to the following steps, and then continue the installation and commissioning.
1. Make sure that all the external I/O MCBs of the UPS are open.
2. Remove the protective cover A of the I/O terminal block.
3. Remove the plates on three cable entry holes of the protective cover B according to the cable direction.
4. Pass all the cables to be connected to the I/O terminal block through the cable entry holes of the protective cover B
according to the actual situation.
5. Remove the shorting wire (label: W01, see Figure 2-19) from the UPS I/O terminal block.