Appendix D: Power Supply and Battery Calculations
46
Battery Capacity Requirement:
Battery (AH) = (Standby Current Total x Discharge Time) + (Alarm Current Total x Alarm Time)
(
[STANDBY (A) ______ ] X [(24 or 60 Hours) ___ ] ) + ( [ALARM (B) ______ ] X [Alarm in Hr. _____ ] ) = (C) ______AH
Total Alarm Current must be 5.5 amperes or less. Indicating Circuits must not to exceed 5 amperes.
Battery Selection:
Battery Size = Multiply (C) by 1.20 to derate battery.
Summit recommends the following batteries for use with this panel:
Batteries: BA-110 (12 AH) will fit into the SFC-500 backbox.
BA-117 (18 AH) and BA-124 (26 AH) batteries will fit into the SFC-551 backbox.
BA-124 (26 AH) batteries will fit into the BC-160 Battery Cabinet.
Use of alternative batteries may result in failure of the panel to meet agency and regulatory requirements, and may
result in shortened battery life. Batteries should be tested regularly, and replaced at least every three years.
Notes: 1. Assumes 25% of Zone LEDS (i.e. 15) are ON during alarm.
2. See specific installation documentation for standby and alarm currents for other
annunciators listed in Panel Components and Accessories. Observe maximum auxiliary
power supply ratings for lamp test conditions for remote annunciators.
SUMMIT BATTERY SIZE UL/ULC RATING
BA-110 12AH 10AH
BA-117 18AH 17AH
BA-124 26AH 24AH
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