Product Description Part 2

RBS 2207
Fuses
Table 12 +24 V DC fuse recomme ndation
Minim um for Safe
Function
Rec ommend ed for
Maximum Selectivity
Maximum Allowed
Fuse Rating
1x80 A
(1)
1x100 A 1x200 A
(1) May be used when no transmission and/or optional equ ipment is installed.
7.3 -48 to -60 V DC Supply Vol tage
Table 13 DC supply voltage requirements
Nominal -48 to -60 V DC
Range -40.0 to -72.0
V DC
Non-destructive r ange +0 to -80 V DC
Inrush c urrent 200 A (0.1 - 5 ms)
Fuses
Table 14 -48 to -60 V DC fuse recommendation
Minim um for Safe
Function
Rec ommend ed for
Maximum Selectivity
Maximum Allowed
Fuse Rating
2x32 A 2x35 A 2x40 A
7.4 Battery Back-up
Battery back-up can be used to power the site during mains failure and to
protec t the site from interrup tions in the AC mains supply. It is available in an
extern al cabinet.
In the event of mains failure, the batteries in the BBS 2000 o r BBS 2202
deliver the necessary powe r to the r adio cabinet as well as to the transmission
equipment, if used. This enables the radio system to continue operating during
mains failure. The transmission equipment is provided with power supply
longer than the RBS.
Battery back- up can be delivered for at least 1, 2, 4, 6 or 8 ho urs back-up time,
depending on the chosen configuration of the R BS. The BBS can feed +24 V
DC or -48 V DC to transmission equipment. Th e -48 V DC supply requires an
internal DC/DC converter in the BBS. It is possible to share battery back-up
between an RBS 2202 or 2206 and an RBS 2207.
20 (24)
E
N/LZT 720 0134 Uen R3A