Altronix AL1042ULADA Installation Instructions - Manual (Page 9)

AL1042ULADA - 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.
AL1042ULADA
(Current draw from battery)
1
Stand-by: 130mA 130mA
Alarm: 300mA 300mA
A AL1042 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.