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A. FN-1024X-220 internal current consumption (stand-by)
B. Load current consumption
C. Stand-by time required (hours)
D. Battery capacity required for standby
E. FN-1024X-220 series internal power consumption
F. Load current consumption
G. Alarm duration (Hours; 15 Min = 0.25 Hour)
H. Battery capacity required for Alarm
I.
Total calculated battery capacity
J. Battery capacity required
Note: FN-1024X-220 power supply is designed to work with batteries up to 65AH. Please note, line [I] must
not exceeds 36AH. You have to reduce either standby current consumption or standby time in order to comply
with requirement.
To determine actual battery size please round line [J] to the nearest larger standard battery size
(e.g. 3.5 AH = 4.0 AH).
Battery Size Calculation Worksheet:
(stand-by)
(A+B)*C
(Alarm)
(Alarm)
(Alarm)
(E+F)*G
D+H
I*1.8 (safety factor)
- 5 -
0.05 A
A
H
AH
0.05 A
A
H
AH
AH
AH
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