User's Manual

RBS 2308 Micro RBS
DC Power Supply
The RBS 2308 can be operated on -48 V DC (-40.5 to -57.0 V DC) supply.
The following fuses are recommended for DC power supply.
Table 23 DC supply fuses recommendation
Cabinet Orientation Recommended Fuse Rating, DC Supply
Vertical 20 A
Horizontal
(1)
25 A
(1) Horizontal mounting requires forced air flow over the RBSs cooling fins.
7.2 Battery Back-up
The RBS 2308 supports an external Power and Battey Cabinet (PBC). External
alarms can be used to detect loss of DC power.
For more information about the PBC, see:
PBC Product Description EN/LZT 720 0252
7.3 Output Power
The RBS can supply the MINI-LINK or LMU with power according to the table
below:
Table 24 Output power characteristics
Voltage range -48 V DC
Connector type Terminals 2 x maximum 2.5 mm
2
Cable gland capacity 6 – 10 mm diameter (Quantity:1)
7.4 Power Consumption
The power consumed by the RBS 2308 in both normal operation and with
heating is given in the table below.
25 (30)
EN/LZT 720 0327/3 Uen R1A