16 Chapter 2 Single UPS Installation And Commissioning
Liebert
®
ITA 16kVA And 20kVA UPS User Manual
2. Self-distribution
The I/O cable connection procedures of the self-distribution for the four types are as follows:
3-in 3-out, common source configuration (factory default)
1. Remove the protective cover A of the I/O terminal block.
2. Remove the plates on six cable entry holes of the protective cover B according to the cable direction.
3. 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. Connect the live lines (input phase A, input phase B and input phase C), N line and PE line respectively to the I/O
terminal block (mA, mB, mC, mN and PE terminals) of the UPS. Short connect mA and bA, mB and bB, mC and bC,
mN and bN of the I/O terminal block of the UPS using the copper shorting bar 3 respectively.
5. Connect the live lines (output phase A, output phase B and output phase C), N line and PE line respectively to the
I/O terminal block (oA, oB, oC, oN and PE terminals) of the UPS, as shown in Figure 2-16.
6. Install the protective cover B of the I/O terminal block.
3333
UPS
bCmCbBmBbAmAbNmNPEoA oB oCoNoN PE
CBANPE
PE CBAN
UPS output
Main input
Figure 2-16 3-in 3-out, common source configuration cable connection
3-in 3-out, split-bypass configuration
1. Remove the protective cover A of the I/O terminal block.
2. Remove the plates on six cable entry holes of the protective cover B according to the cable direction.
3. 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 all the copper shorting bars 3 from the I/O terminal block of the UPS.
5. Connect the live lines (main input phase A, main input phase B and main input phase C), N line and PE line
respectively to the I/O terminal block (mA, mB, mC, mN and PE terminals) of the UPS.
6. Connect the live lines (bypass input phase A, bypass input phase B and bypass input phase C) and N line
respectively to the I/O terminal block (bA, bB, bC and bN terminals) of the UPS.
7. Connect the live lines (output phase A, output phase B and output phase C), N line and PE line respectively to the
I/O terminal block (oA, oB, oC, oN and PE terminals) of the UPS, as shown in Figure 2-17.
8. Install the protective cover B of the I/O terminal block.
UPS
Main input / Bypass input
mN
bN
mA
bA
mB
bB
mC
bC
UPS output
NA BC
bCmCbBmBbAmAbNmNoN oN oA oB oC
PE
PE
PE PE
Figure 2-17 3-in 3-out, split-bypass configuration cable connection
To Next Page
Loading...
