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Required batteries for existing load
Use the following procedure to determine the battery requirements for your system:
– Estimate the size of the battery required to support the standby load using the following
table:
Standby load battery
size chart
Capacityr 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
Table 2.6: Standby load battery size (Ah)
– Estimate the size of the battery required to support the alarm load using the following
table:
Alarm load
battery size
chart
Capacity
required for
5 minutes
Capacity
required for
10 minutes
Capacity
required for
15 minutes
Capacity
required for
30 minutes
Capacity
required for
45 minutes
Grand Total
Alarm Existing
250 to
500 mA
0.1 0.1 0.2 0.3 0.5
501 to
999 mA
0.1 0.2 0.3 0.6 0.9
1.0 to 1.5 A 0.2 0.3 0.5 0.9 1.4
1.6 to 2.0 A 0.2 0.4 0.6 1.2 1.8
2.1 to 2.5 A 0.3 0.5 0.8 1.5 2.3
2.6 to 3.0 A 0.3 0.6 0.9 1.8 2.7
3.1 to 3.5 A 0.4 0.7 1.1 2.1 3.2
3.6 to 4.0 A 0.4 0.8 1.2 2.4 3.6
Table 2.7: Alarm load battery size (Ah)
– Add the results together for the total battery size.
2.2.11
16 en | Overview Fire Alarm Control Panels
2012.08 | 04 | F01U008458 Installation and Operation Manual Bosch Security System, Inc.