77
Appendix F - Battery Calculations
Battery Capacity Requirement
Battery (AH) = (Standby Current Total x Discharge Time) + (Alarm Current Total x Alarm Time)
([STANDBY (A) ______ ] X [(24 Hours) ___ ]) + ([ALARM (B) ______ ] X [Alarm in Hr.] _____) = (C) ______AH
Total Alarm Current must be
10
amperes or less. NAC Circuits must not exceed
6
amperes.
Battery Selection
Battery Size = Multiply (
C
) by 1.20 to derate battery.
See the following table for the recommended MGC batteries for use with this panel
BAT-12V12A (12 AH) and BAT-12V18A (18 AH) will fit into the MR-3318 enclosure.
To house BAT-12V26 (26 AH) batteries a BC-160 Battery Cabinet is required.
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. If the Battery Trouble
indicator activates, obtain required service.
Device & Remote LEDs (Maximum 20 per loop)
X
=
Signal Load (bells, horns, strobes, and etc.)
X
=
Auxiliary Power Supply (Aux 1, Aux 2, Un-filtered)
=
Alarm
=
Total currents (Add above currents)
STANDBY
(
A
)
(
B
)
Table 28 Recommended Batteries
Battery Model
Battery Size
UL Rating
BAT-12V12A
12AH
10AH
BAT-12V18A
18AH
17AH
BAT-12V26A
26AH
26AH
Содержание MR-3318
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