NOTE:
For 2 loop panels 7AH batteries are always recommended.
9
INSTALLATION & COMMISSIONING MANUAL - REVISION 1.0 - 19.FEB.2007
OVERVIEW
Battery Requirements
The battery AH required are calculated from the following formula
Quiescent current in mA of
the panel with everything
connected.
Alarm current in Amps
(sounder load)
Standby time required in
hours divided by 1000.
Alarm time in hours
X
X
(
(
)
)
+
+
20%
Round up to the next available battery size.
Quiescent currents for individual equipments are listed below:
Example
A given installation has a single loop panel with 58mA detector load, 1.4A sounder load (including
loop sounders) and a 24 hour standby requirement.
Quiescent current in
mA of the panel with
everything connected.
Alarm current in Amps
(sounder load)
S t a n d b y t i m e
required in hours
divided by 1000.
Alarm time in
hours
X
X
X
X
(
(
(
(
)
)
)
)
+
+
+
+
20%
80 (Jr. panel)
+
58 (detector load)
24 (standby in hrs)
divided by
1000
0.5
(alarm time in hrs)
105 (Jr. panel)
+
58 (detector load)
=
138mA
=
3.312AH
= 4.094 AH +20% (0.82AH) = 4.913 AH
The next available battery size is 5 AH
=
0.782AH
=
0.024H
=
0.5H
=
163mA
+1.4A (sounder load)
=
1.563A
EQUIPMENT
QUIESCENT
CURRENT
(mA)
ALARM
CURRENT
(mA)
Junior Panel
24V auxiliary outputs (2 off)
80
Refer to connected devices
105