Battery Calculations - Notifier ACPS-2406 Manual

Power Supply Calculations

5.2 Battery Calculations

Table 5.6 sums the standby and alarm loads to arrive at the battery size, in Ampere Hours (AH),
required to support the ACPS-2406. The ACPS-2406 can charge batteries from 7 to 25 AH. Select
batteries that meet or exceed the total AH calculated in Table 5.6.
L T
OAD OTALS
Enter Standby Current
(Amps) Total from
Column A, Table 5.5
Enter Alarm Current
(Amps) Total from
Column B, Table 5.5
Add (1) and (2) Secondary Standby and Alarm Totals
Multiply by the Derating Factor of 1.2
* Following are decimal conversions for standard numbers of minutes:
5 minutes 0.084
10 minutes 0.167
15 minutes 0.250
60 minutes 1.0
120 minutes 2.0
Note:
1. Battery size is limited to 7.0 AH minimum to 25.00 AH maximum using the internal ACPS-2406 battery charger.
2. For battery sizes greater than 25.0 AH, disable internal charger by setting SW3.7 to OFF and use an external battery
charger.
34
M
ULTIPLY
T
IME
B
Y
Enter Required
X Secondary Standby
Time in Hours
Enter Required Fire
X Alarm Time in Decimal
Form*
Table 5.6 Ampere Hour Calculations
Battery Calculations
S A H
E
QUALS ECONDARY MP OUR
(1) Secondary
= Standby Amp
Hour Requirement
(2) Secondary
Fire Alarm Amp
=
Hour
Requirement
X 1.2
Total Ampere
= Hours (AH)
Required
ACPS-2406 PN 51304:B 09/02/2003
T
OTALS