22
Vertiv I Liebert ITA2 30kVA I Manual
Table 2-4
UPS I/O MCB selection
Model
Input
interface
Recommended
capability of input
external MCB
Battery MCB
Output
interface
Recommended
capability of output
external MCB
30kVA
Terminal
block
80A/C (mains)
63A/C (bypass)
100A
Terminal
block
63A/C
1. The 3-in 3-out bypass MCB is used to connect the bypass input upon split-bypass
configuration. The main MCB can be used only upon common input configuration.
2. The battery CB should use the 250Vdc or above.
2.6.1
Connecting I/O Cables
The power cables of the UPS should be connected through the I/O terminal block located on
the UPS rear panel. As shown in Figure 2-1
2
.
Figure 2-12
Terminals layout of the I/O terminal block
After the power cables connection, the protective cover board of the I/O terminal
block must be reinstalled so as to avoid electric shock.
Output terminals - sA, sB, sC; Output PE terminal: PE; Common N:N.
Input terminals - Mains input terminals: mA, mB, mC; Bypass input terminals:
bA, bB, bC; Common N: N; Input PE terminal: PE.
Battery terminals - BAT+, BAT N, BAT-; Battery PE terminal: PE.
The shorting copper bar of the 3-in 3-out (common input) has been linked
before delivery.
