Bcb Box (Optional) - Liebert NXC 30kVA User Manual

6.9 BCB Box (Optional)

The BCB box contains a BCB and a BCB control board.
Emerson provides the BCB box and BCB signal cables (length: 30m) for use when the battery does not install in the
battery cabinet. In this situation, The BCB box is fitted as close as possible to the battery and connected to the UPS.
Refer to Figure 6-3 and Table 6-4 for description of the BCB box and its components.
The BCB box protects the battery against overdischarge and overcurrent, and also isolates the UPS and battery, thus
reducing the risk at lowest for service personnel during the maintenance. The box inside has connection bars for
connecting the power cables from the UPS and batteries.
Note: The signal cables from the UPS to the BCB control board must be routed in a separate cable trough and
separated from battery power cables. The separate safety earth must be connected between the UPS and BCB box.
The BCB box is provided as follows according to different UPS rated power.
Dimensions (H × W × D) (mm)
558 × 378 × 180
Note: This weight excludes the packing
The BCB has the following advantages:
Short circuit protection and EOD protection. When the battery voltage drops to EOD, the BCB will be switched off
automatically.
UPS EPO. When pressing the EPO button, the BCB will be switched off automatically.
Figure 6-2 Battery room design
Table 6-3 Parameters of BCB box
6
9 UPS-
2
UPS N
3
4
2 7
UPS+
BAT+
BAT-
1
BAT N
6
Figure 6-3 BCB box
Liebert NXC 30kVA And 40kVA UPS User Manual
Weight (kg)
21.5
10
5
Chapter 6 Battery
BCB
160A, 4 poles
8
51