Liebert ITA UPS 16kVA User Manual page 21

When using the single POD options, the UPS power cables should be connected through the user terminal block of
the single POD rear panel, UPS terminal block and PE terminals. The terminal distribution of each terminal block on
the POD rear panel and the PE terminals are shown in Figure 2-8.
PE PE
Note: 1. Main input: mA, mB, mC, mN; Bypass input: bA, bB, bC, bN
Output: oA, oB, oC, oN; Battery: Bat +, Bat N, Bat -; GND: PE
2. In factory, four shorted copper bars 3 have been used to short terminals between mA and bA,
mB and bB, mC and bC, mN and bN respectively
Figure 2-8 Terminals distribution of the terminal block and PE terminals
The UPS I/O terminal block, the single POD user terminal block and the UPS terminal block all have protective cover.
Before the connection, you should remove the protective cover of each terminal block; after the connection, you
should reinstall the protective cover.
After the cables connection, you must reinstall the protective cover for each terminal block, so as to avoid the electric shock when
the UPS is in operation.
Using the single POD options (Recommended)
z 3-in 3-out, common source configuration (factory default)
1. Connect the live line (input phase A, phase B and phase C), N line and PE line respectively to the user terminal
block (terminal mA, mB, mC and mN) of the single POD, and PE terminals.
2. Connect the live line (output phase A, phase B and phase C), N line and PE line respectively to the user terminal
block (terminal oA, oB, oC and oN) of the single POD, and PE terminals.
3. Remove all the shorted copper bars 3 from the UPS I/O terminal block, connect the UPS terminal block of the
single POD with the same silk screen terminal of the UPS I/O terminal block using the one-to-one correspondence
method, and connect the two PE terminals of the UPS I/O terminal block to the single POD terminals.
z 3-in 3-out, split-bypass configuration
1. Remove all the shorted copper bars 3 from the single POD user terminal block.
2. Connect the live line (main input phase A, phase B and phase C), N line and PE line respectively to the user
terminal block (terminal mA, mB, mC and mN) of the single POD, and PE terminals.
3. Connect the live line (bypass input phase A, phase B and phase C), N line and PE line respectively to the user
terminal block (terminal bA, bB, bC and bN) of the single POD.
4. Connect the live line (output phase A, phase B and phase C) and N line respectively to the user terminal block
(terminal oA, oB, oC and oN) of the single POD user terminal block.
5. Remove all the shorted copper bars 3 from the UPS I/O terminal block, connect the UPS terminal block of the
single POD with the same silk screen terminal of the UPS I/O terminal block using the one-to-one correspondence
method, and connect the two PE terminals of the UPS I/O terminal block to the single POD terminals.
User terminal block
mN bN mA bA mB bB mC bC
oN oN oA oB oC
oN oN oA oB oC mN bN mA bA mB bB mC bC
UPS terminal block
Liebert ITA 16kVA/20kVA User Manual
Chapter 2 Installation
3 3 3 3
Warning
13
PE PE