Notifier AM2020 User Manual

1-37
Installation 15088: J 10/22/99
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).
Table 3.2-3 Secondary Power Standby and Fire Alarm Load
NOTE
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.
* 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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Table 3.2-2 Maximum Secondary Power Fire Alarm Current Draw
L
OAD
T
OTALS
M
ULTIP LIED
BY
T
IME
E
QUALS
S
ECONDARY
A
MP
H
OUR
T
OTALS
Enter Secondary Non-
fire Alarm Load from
Column C of Table
3.2-1
[ ]
X
Enter Required Secondary
Non-fire Alarm Standby Time
(24 or 60 hours)
[ ]
=
[ ]
Non-fire Alarm
Secondary
Standby Amp
Hours
Enter Secondary Fire
Alarm Load from Table
3.2-2
[ ]
X
Enter Required Fire Alarm Time
(for 5 minutes, enter 0.084)
for 15 minutes, enter 0.25)
[ ]
=
[ ]
Secondary
Fire Alarm
Amp Hour
Requirement
Sum column for Total Secondary Ampere Hours (AH) Calculated
=
Multiply by the derating factor x 1.2
=
Total Secondary Ampere Hours Required =
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Notifier AM2020 Specifications

General

Brand	Notifier
Model	AM2020
Category	Fire Alarms
Language	English