Reference Manual Part 1

RBS 2206
Fuses
Table 11 +24 V DC Fuse Recommendation
Minimum for Safe
Function
Recommended for
Maximum Selectivity
Maximum Allowed
Fuse Rating
1 x 160 A
(1)
1 x 200 A 1 x 250 A
(1) May be used when no transmission and/or optional equipment is installed.
7.3 -48 to -60 V DC Supply Voltage
Table 12 DC Supply Voltage Requirements
Nominal -48/-60 V DC
Range -40.0 to -72.0 V DC
Non-destructive Range +0 to -80 V DC
Inrush Current
200 A (0.1 – 5 ms)
Fuses
Table 13 -48 to -60 V DC Fuse Recommendation
Minimum for Safe
Function
Recommended for
Maximum Selectivity
Maximum Allowed
Fuse Rating
4 x 32 A 4 x 35 A 4 x 40 A
7.4 Battery Backup
Battery backup is used to power the site during mains failure and to protect
the site from short interruptions in the AC mains supply. It is available in an
external cabinet.
It is possible to supply external transmission equipment from the battery
cabinet. The transmission equipment is then provided with power supply longer
than the RBS. In the event of mains failure, the batteries in the BBS 2000 or
BBS 2202 will deliver the necessary power to the radio cabinet as well as to
the transmission equipment, if used. This enables the radio system to continue
operating during mains failure.
Battery backup can be delivered for 1, 2, 4, 6 or 8 hours backup time, depending
on the chosen configuration of the RBS. The BBS can feed +24 V DC or
-48 V DC to the TM equipment. The -48 V DC supply requires an internal
DC/DC converter in the BBS. It is possible to share battery backup between an
RBS 2202 and an RBS 2206.
24 (28)
E
N/LZT 720 0225 Uen R6A