24
Vertiv I Liebert ITA2 30kVA I Manual
3-in 3-out, split-bypass configuration
1. Remove the three shorting copper bars 1# installed before delivery.
2. Connect the input live wires (phase-A, phase-B and phase-C), input N line and input PE
line respectively to the I/O terminal block (mA, mB, mC, N and PE terminals) of the UPS.
Connect the bypass input live wires (phase-A, phase-B, phase-C and N) respectively to the
input terminals bA, bB, bC and N.
3. Connect the standard output live wires (phase-A, phase-B and phase-C) respectively to
the output terminals sA, sB and sC. Connect the output N line and output PE line
respectively to the output terminals N and PE. As shown in Figure 2-1
4
.
4. As shown in Figure 2-1
4
, lead the battery positive cable, battery N cable and battery
negative cable through the cable hole of the junction box, then respectively connect them to
BAT+, BAT N, BAT- and PE, then fasten the fixing screws.
N
N
N
N
PE
PE
PE
PE
sC
sC
sB
sB
N
N
sA
sA
PE
PE
BAT-
BAT-
BAT+
BAT+
BATN
BATN
bC
bC
mC
mC
mB
mB
mA
mA
bB
bB
bA
bA
Figure 2-14 Wiring diagram (3-in 3-out, split-bypass configuration)
Before the commissioning engineer's arrival, if the load is not ready for accepting
the power, please take good care of the safety insulation at the end of the output
cable.
2.6.2
Connecting Battery Cables
Take special care when working with the batteries associated with the UPS. When all the
blocks are connected together, the battery string voltage can be up to 432Vdc. This is
potentially lethal. Please follow the precautions for high voltage operation. Only qualified
personnel are allowed to install and maintain the battery. To ensure safety, the external
batteries are to be installed inside a lockable cabinet or in a purpose-designed, dedicated
battery room, so that they are only accessible to qualified service personnel.
1. All the battery cabinets or battery racks must be connected together and properly
grounded.
2. When multiple batteries are used, they shall be connected in series and then in parallel.
Before loading and power-up, it must be detected that the total voltage of the batteries is as
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