Maximum Secondary Power Fire Alarm Current Draw - Notifier AM2020 User Manual
Fire alarm control panel
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Also See for AM2020:
- User manual (268 pages) ,
- Operation and installation manual (14 pages) ,
- Manual (12 pages)
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Maximum Secondary Power Fire Alarm Current Draw
Use Table 3.2-2 to determine the maximum current requirements of the secondary power source during fire
alarm conditions. The total obtained in Table 3.2-2 is the amount of current that the batteries must be capable of
supplying. This figure will be used in Table 3.2-3 to determine the size of the batteries needed to support five
minutes of fire alarm operation.
It is presumed, in a fire alarm condition, that the batteries must feed the main power supply and any additional
supplies (APS-6R, AA-30, AA-30E, AA-100, AA-100E, AA-120, and AA-120E) with the maximum rated power
each supply can provide (Table 3.2-2).
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Installation 15088: J 10/22/99
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Due to the maximum rating of 9 amps imposed when using PS-12250 batteries, it may
be necessary to calculate the exact requirements of the secondary supply. In that
case, add the secondary non-fire alarm load obtained in Table 3.2-1 to the total fire
alarm current draw of all notification appliances in the system and substitute that
figure in Table 3.2-2 for the MPS and any APS-6Rs.
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* The secondary fire alarm load cannot exceed 9.0 amps with PS-12250
batteries, and 20 amps with PS-12600 batteries.
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Total Secondary Ampere Hours Required
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1-37
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