Liebert UHA1R-0100 User Manual page 27

1. Make sure that all the external I/O MCBs of the UPS are open.
2. Remove the protective cover of the bypass terminal block, and then 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 cable (cable number: W10, see Figure 2-19) from the UPS I/O terminal block.
6. Connect the main input live line (phase A, phase B and phase C), N line and PE line respectively to the input live
line terminal (U), input live line terminal (V), input live line terminal (W), input neutral line terminal (N) and input earth
line terminal (PE) of the UPS I/O terminal block, and tighten the fixing screws. The input live line terminal (U1) is not
connected, as shown in Figure 2-20.
7. Connect the output L line, N line and PE line respectively to the output live line terminal (L), output neutral line
terminal (N)and output earth line terminal (PE) of the UPS I/O terminal block, as shown in Figure 2-20.
8. Install the protective cover B of the I/O terminal block, and then restore the protective cover of the bypass terminal
block.
Figure 2-20 Cable connection for 3-input 1-output, common source configuration
 3-input 1-output, split-bypass configuration
1. Make sure that all the external I/O MCBs of the UPS are open.
2. Remove the protective cover of the bypass terminal block, and then 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.
4. Remove the shorting cable (cable number: W10, see Figure 2-19) from the UPS I/O terminal block.
5. Connect the main input live line (phase A, phase B and phase C), N line and PE line respectively to the input live
line terminal (U), input live line terminal (V), input live line terminal (W), input neutral line terminal (N) and input earth
line terminal (PE) of the UPS I/O terminal block, and tighten the fixing screws. The input live line terminal (U1) is not
connected, as shown in Figure 2-21.
6. Remove the shorting cable (cable number: W09, see Figure 2-20), connect the input bypass line to the BYPASS
terminal of the bypass terminal block, and tighten the fixing screws, as shown in Figure 2-21.
7. Connect the output L line, N line and PE line respectively to the output live line terminal (L), output neutral line
terminal (N) and output earth line terminal (PE) of the UPS I/O terminal block, and tighten the fixing screws, as shown
in Figure 2-21.
8. Install the protective cover B of the I/O terminal block, and then restore the protective cover of the bypass terminal
block.
Chapter 2 Single UPS Installation And Commissioning
Liebert ITA 10kVA UPS User Manual
®
Shorting cable (cable number: W09)
N A B C
Input
PE PE L N
Output
19