Altronix AL1002ULADA Installation Instructions User Manual
Page 9
AL1002ULADA
- 9 -
Battery Calculation Worksheet
Device
Number of
Devices
Current per Device
Stand-by
Current
Alarm
Current
For each device use this formula: This column x This column = Equals
Current per number of devices.
AL1002ULADA
(Current draw from battery)
1
Stand-by:
130mA
130mA
Alarm:
300mA
300mA
A
AL1002 Current
130mA
300mA
Auxiliary Devices
Refer to device manual for current ratings.
Alarm/Stand-by
mA
mA
mA
Alarm/Stand-by
mA
mA
mA
Alarm/Stand-by
mA
mA
mA
B
Auxiliary Devices Current (must not exceed 1 amp)
Refer to device manual for current ratings.
Alarm:
mA
0mA
mA
Alarm:
mA
0mA
mA
Alarm:
mA
0mA
mA
Alarm:
mA
0mA
mA
C Notification Appliances Current must not exceed 10 amp (10,000mA) 0mA
mA
D Total alarm current
mA
mA
E Total current ratings converted to amperes (line D x 0.001)
A
A
F Number of stand-by hours (24 for NFPA 72, Chapter 1, 1-5.2.5).
H
G Multiply lines E and F.
Total stand-by AH
AH
H
Alarm sounding period in hours.
(For example, 5 minutes = .0833 hours.)
H
I Multiply lines E and H.
Total alarm AH
AH
J Add lines G and I.
Total stand-by and alarm AH
AH
K
Multiply line J by 1.30.
(30% extra insurance to meet desired performance)
Total ampere - hours required
AH
Units are capable of recharging 36AH battery max. If total ampere - hour required exceeds 36AH,
decrease AUX current to provide enough stand-by time for the application.