Reference Manual Part 1

RBS 2106
Table 14 Power Parameters
PSU Capacity
4 x 1200 W (4800 W total)
BFU 1 x 200 A
External Earth Fault Circuit Breakers
If external earth fault circuit (ground fault) breakers are used, then the
recommended minimum trip value is 100 mA.
Mains Fuses
Table 15 Mains Fuses Recommendation
Minimum for Safe
Functio
n
Recommended for
Maximum
Selectivity
Maximum Allowed
Fuse Rating
25 A / 40 A
(1)
32 A / 50 A
(2)
63 A
(1) Three-phase/Single phase.
(2) Three-phase/Single phase.
7.2 Battery Backup
Battery backup is used to power the site during mains failure and also to protect
the site from short-term interruptions in the mains supply.
Internal Battery Backup
The following battery backup levels can be achieved in the cabinet:
• Full: one hour backup time
• Half: half an hour backup time
If no TM equipment is used, thene to add additional batteries in the TM
compartment. The backup time will then be enhanced by 100%.
External Battery Backup
Ericsson supplies two external battery backup alternatives: the BBS or the BBU
9500. Both are connected through the DC filter.
7.3 Output Power to TM
The RBS can supply the TM with power according to the table below.
31 (36)
EN/LZT 720 0222 Uen R6A