Notifier AFP-400 Installation Manual

$SSHQGL[ * 3RZHU 6XSSO\ &DOFXODWLRQV Calculating the System Current Draws
G-2 AFP-300/AFP-400 Installation PN 50253:C1 05/22/97
+RZWR8VH7DEOH*
Throughout these current calculation tables, “Primary” refers to the FACP primary
source of AC power. “Secondary” refers to the FACP backup batteries (or any other
24 VDC power supply listed for Fire Protective Signaling and connected in place of the
batteries).
1RWH 7DEOH * FRQWDLQV WKH
IROORZLQJ FROXPQV
The Primary Power Source Non-Alarm Current and Alarm Current columns of Table
G-2 are AC current calculations. These calculations confirm that the MPS-400 can
supply enough current to support the system during Primary Non-Fire Alarm and Fire
Alarm conditions.
&ROXPQ  3ULPDU\ 1RQ)LUH $ODUP &XUUHQW LQ DPSV
Sum column 1 of Table G-
2 to get the current drawn from the MPS-400 during a non-alarm condition, with AC
power applied. This current draw cannot exceed 3 A.
&ROXPQ  3ULPDU\ )LUH $ODUP &XUUHQW LQ DPSV
Calculation column 2 of Table
G-2 lets the system designer determine the current load that the MPS-400 must support
during a fire alarm. The total current drawn from the MPS-400 during a fire alarm
cannot exceed 6 A.
Typically, a system should contain capacity to activate all output circuits and relays, and
support fire alarms on no less than 10% of Initiating Device Circuits, subject to the
requirements of the Authority Having Jurisdiction (AHJ).
•
If using four-wire detectors
In Table G-2, the primary fire alarm current for
four-wire smoke detectors equals the manufacturer's rated fire alarm current minus
the manufacturer's rated non-fire alarm current.
1RWH 1R PRUH WKDQ  $ RI
FXUUHQW FDQ EH GUDZQ IURP WKH
036 GXULQJ DQ DODUP
FRQGLWLRQ
•
If using notification appliances
The MPS-400 provides power for Notification
Appliance Circuits. Refer to the Device Compatibility Document for 24 VDC
notification appliances that are UL-listed for fire alarm systems.
&ROXPQ  >6HFRQGDU\ %DWWHU\ 1RQ$ODUP &XUUHQW@
Column 3 of Table G-2 lets
the system designer calculate the secondary non-fire alarm current. (Non-fire equals
the current drawn from the secondary source in a non-fire alarm condition during AC
power loss.) The non-fire alarm current is required to complete the standby battery
calculations. After summing all current draws, insert the total in Table G-3.

www.PDF-Zoo.com

Notifier AFP-400 Specifications

General

Brand	Notifier
Model	AFP-400
Category	Control Panel
Language	English