Operation & Installation Manual RFS1 V2
MA365 Rev 3
37 of 46
9 Battery Capacity Calculation
The required battery capacity can be calculated using the active battery calculation
spread sheet. By selecting the RFS1 V2, no. of smoke/heat alarms and adding any
ancillaries, the spread sheet will automatically calculate the battery capacity required
to maintain the system for 72 hours in standby condition followed by 4 minutes in
alarm as required by AS3786.
Manual calculation of battery capacity can also be calculated as follow:
Total Quiescent Current I
Q = _______ mA Standby time T
1
= 72 Hrs
Total Alarm Current I
A = _______ mA Alarm time T
2
= 4 minutes.
Battery Capacity (Ah) =
×
(
×
)
×.
Power supply requirements = I
A
+ 300mA (where 300mA is the battery charge
current)
RFS1 V2 Battery Calculations
Rev 1 Date
22-Jul-19
Project:
mA Total mA mA Total mA
Single Zone Residential Fire Panel (1 Keypad) RFS1V2 1 33.0 33.0 100.0 100.0 Voltage @ 13.8V
Second keypad BARFS1-KPAD 0 40.0 0.0 40.0 0.0
Photoelectric Smoke Alarm EIB650iWX 1 4.5 4.5 30.0 30.0
Heat Alarm EIB603CX 1 6.0 6.0 50.0 50.0
Roof Space Heat Detector 60⁰ HS60V2 1 0.0 0.0 6.7 6.7 If RIL fitted I
A
= 14mA
Roof Space Heat Detector 80
⁰ HS60V2 1 0.0 0.0 6.7 6.7 If RIL fitted I
A
= 14mA
Billow Shaker (Vibration Patrice) EIB207V 1 1.3 1.3 100.0 100.0
Generic Input / Output Module
EIB209IO 1 1.3 1.3 45.0 45.0
BVADC/BVADW 1 1.3 1.3 25.0 25.0
Total no. of Alarms
5
13
Ancillary Output (not shown above) 0.0 0.0
Others 0.0 0.0
Total current consumption. (mA)
47.4
363.4
Battery Requirement (in AH)
4.326567
Nearest Standard Battery Size (A/h)
7
Note: Only yellow cells can be edited
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