Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario
Product Data
equipment and/or the DC/DC converter until the voltage has
dropped to 20.0 V DC.
dropped to 20.0 V DC.
•
The temperature of the batteries is too high.
•
A short circuit occurs between the distribution cables. This will
release the circuit breaker in the BFU.
release the circuit breaker in the BFU.
The BFU also supplies voltage through two fuses directly to
transmission equipment and/or through the DC/DC converter (optional)
to transmission equipment. BFU-21 supplies through two fuses (12 A),
BFU-22 supplies through one fuse (40 A).
transmission equipment and/or through the DC/DC converter (optional)
to transmission equipment. BFU-21 supplies through two fuses (12 A),
BFU-22 supplies through one fuse (40 A).
One BFU is needed for each RBS cabinet.
BFU-21 and BFU-22 differ in their power outputs, see Table 53 on
page 95.
page 95.
DC/DC converter (optional)
The DC/DC converter is located in the BBS and converts +24 V DC
to -48 V DC.
to -48 V DC.
Battery Blocks
The batteries are for stationary use. They are a sealed lead-acid type,
with valve ventilators. The battery is composed of battery blocks in one
or more battery strings. One string of +24 V batteries has four 6 V
blocks.
with valve ventilators. The battery is composed of battery blocks in one
or more battery strings. One string of +24 V batteries has four 6 V
blocks.
Further information regarding the BBS 2000 can be found in:
Power Manual BBS 2000
K 1556-BZZ 208 06-101
5.6.5
Cable Connection Interfaces
See Section 5.3.2 +24 V DC Power Supply on page 82.
5.7
Antenna System
This chapter contains information about antenna configurations for
outdoor cells.
outdoor cells.
There are a number of antenna system products available, such as
antennas, feeders, jumpers, TMAs and so on. For more detailed
information about products, see
antennas, feeders, jumpers, TMAs and so on. For more detailed
information about products, see
RBS Site Solutions homepage:
http://gsmrbs.ericsson.se/gsmsystems/solutions/rbs_site_solutions/
index.htm
index.htm
98 (421)
EN/LZT 720 0008
R1A
2001-06-26
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