FPD-7024
|
Operation and Installation Guide | 1.0
Overview
12
Bosch Security Systems, Inc. | 1/10 | F01U008458-03
The units shown in
Table 5
are Amp hours (Ah), and the figures include a 20% derating factor.
Table 5:
Required Battery Size Calculation
Grand Total Standby Existing (in amps)
CS
Total Hours of Standby Required (usually 24 or 60):
HS
Total Standby Capacity (multiply CS X HS)
TS= CS X HS
Grand Total Alarm Existing (in amps)
CA
Total Hours of Alarm Time Required (usually 0.083 or 0.25):
HA
Total Standby Capacity (multiply CA X HA)
TA= CA X HA
Total Capacity Required (add TA + TS):
TC = TA + TS
Required Capacity with 20% Derating (TC X 1.2)
C = TC X 1.2
The required battery size to support the system can be calculated using
Table 6
and
Table 7
on page 13.
1.2.11 Standby Existing Load
Use
Table 6
to estimate the size of the battery required to support the standby load, then use
Table 7
on page
13 to estimate the size of the battery required to support the alarm load. Add the results together for the total
battery size. Select the next larger standard battery for the system. If the results show a requirement for a
battery over 40 Ah, reduce the existing or add an external regulated fire protective signaling power supply.
Table 6:
Standby Load Battery Size (Ah)
Standby Load Battery Size Chart
Capacity Required for
24 Hours
Capacity Required for
48 Hours
Capacity Required for
60 Hours
Grand Total Standby Existing
100 to 200 mA
5.8
11.5
14.4
201 to 300 mA
8.6
17.3
21.6
301 to 400 mA
11.5
23.0
28.8
401 to 500 mA
14.4
28.8
36.0
501 to 600 mA
17.3
34.6
X
601 to 700 mA
20.2
X
X
701 to 800 mA
23.0
X
X
801 to 900 mA
25.9
X
X
901 to 1000 mA
28.8
X
X
1001 to 1100 mA
31.7
X
X