Appendix A: Battery Calculations - Fire-Lite Alarms MS-4412B Manual

Appendix A: Battery Calculations

Table A-1: Standby Battery Requirements
The Standby Battery Current figure obtained in Table A - 1 represents the amount of current that must be
supplied by the secondary power source (batteries) to sustain control panel operation for one hour.
Basic Control Panel
Control panel with AC power off, System Trouble LED and audible trouble sounder on.
If using a Zone Relay Module
If using a Transmitter Module, add 11 mA
If using a Driver/Annunciator combination:
Auxiliary Power
If using a 911A , add 30 mA
a.
b.
c.
d.
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If using the Reverse Polarity Alarm output, add 5 mA
If using the Reverse Polarity Trouble output, add 5 mA
Number
in use
Two-wire detector heads
Four-wire detector heads
End-of-Line Relays
Add lines a, b, & c for subtotal
Sum Column for Standby Battery Current
Note: (113 mA maximum for 60 hours of standby)
(230 mA maximum for 24 hours of standby)
MS-4412B/MS-4424B 15125:F1 06/24/97
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[ ] X 8 mA =
[ 1 ] X 19 mA =
Total
Device
Current
Current
(see Device Compatibility
Document for data )
X =
X =
X 25.0 mA =
Place subtotal here :
and continue to Table A-2.
80 mA