A-4August 1999 76-100016-001
PEGAsys
Intelligent Suppression Control/Fire Alarm System
A-4 CALCULATING BATTERY SIZE REQUIRED
Table A-5 sums the standby and alarm loads to arrive at the battery size, in amp hours (AH), needed to support the control panel.
There is a maximum battery size which the system power supply (P/N 76-100009-010) is capable of charging. Select batteries which
meet or exceed the total amp hours (AH) calculated and are within the acceptable range of the system battery charger output, which
is 12 to 99 AH. Using the totals from Table A-3 and Table A-4, complete Table A-5 to determine the total battery (AH) capacity
necessary for the power supply.
Table A-5: Total Battery Capacity Required
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NOTE: 1. Main system enclosure can house up to (2) 33 AH batteries (P/N 89-100052-001). If an auxiliary power module is added to the
system the batteries must be moved to a separate battery box or secondary enclosure, if used.
2. NFPA 72 - 1996 Protected Premises or Proprietary fire alarm systems require 24 hours of standby power followed by 5
minutes alarm activation.
3. NFPA 72 - 1996 Auxiliary or Remote Station require 60 hours of standby power followed by 5 minutes alarm activation.
4. NFPA 72 - 1996 allow 4 hours of standby battery capacity if there is an automatic starting engine driven generator.
5. NFPA 12, 12A, 12B require 24 hours of standby and five minutes of alarm activation.
6. Factory Mutual requires Pre-action and Deluge systems to have 90 hours of battery standby and 10 minutes of alarm activation.
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