Installation Guide

- 14 - M series
AL1024ULM Battery Size Calculation Worksheet.
A. AL1024ULM internal current consumption (stand-by) ______________ 0.13 A
B. Load current consumption (stand-by) ______________ A
C. Stand-by time required (hours) ______________ H
D. Battery capacity required for stand-by (A+B)*C ______________ AH
E. AL1024ULM internal power consumption (Alarm) ______________ 0.13 A
F. Load current consumption (Alarm) ______________ A
G. Alarm duration (Hours, example:15 Min = 0.25 Hour) (Alarm) ______________ H
H. Battery capacity required for Alarm (E+F)*G ______________ AH0
I. Total calculated battery capacity D+H ______________ AH
J. Battery capacity required I*1.8 (safety factor) ______________ AH
Note: AL1024ULM 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.