
Site Preparation
– continued
DRAFT
SC
TM
4812ET RF and Power Cabinet Hardware Installation Manual
Apr 2001
42
Minimum Battery Count for
Power Cabinet
Table 2-5 lists the number of Battery strings required for the different
sector–carrier configurations and the backup power time provide by the
various combinations.
Table 2-5: Minimum Battery Strings Required for Sector–Carrier Configurations
# of
Battery
Strings
3 Rectifiers
(3 Sector–Carriers)
4 Rectifiers
(6 Sector–Carriers)
5 Rectifiers
(9 Sector–Carriers)
6 Rectifiers
(12 Sector–Carriers)
0
0
0
0
0
1
2
3
4
5
6
4.0 hrs
7
4.8 hrs
3.5 hrs
8
5.4 hrs
4.0 hrs
9
6.0 hrs
4.5 hrs
3.6 hrs
10
6.7 hrs
5.0 hrs
4.0 hrs
3.3 hrs
11
7.4 hrs
5.5 hrs
4.4 hrs
3.6 hrs
12
8.0 hrs
6.0 hrs
4.8 hrs
4.0 hrs
! CAUTION
The minimum number of battery strings presented in this table must be met or reduced backup time and
inadvertant tripping of the battery system breakers could result.
The backup durations presented within this table is an
estimated time based on 25 Deg C (77Deg F) battery
temperature, actual backup duration may vary with system
configuration and loading.
NOTE
Outdoor Location
Do not select a location that is, or may be subject to
submersion (i.e., floodplains, diversion channels, etc.).
While the cabinets are well insulated from the
environment, they will not tolerate submersion.
CAUTION
2