39
Appendix D: Power Supply & Battery Calculations
Use the form below to determine the required main chassis and secondary power supply (batteries).
The main AC branch circuit connection for Fire Alarm
Control Unit must provide a dedicated continuous power
without provision of any disconnect devices. Use #12 AWG
wire with 600-volt insulation and proper over-current
circuit protection that complies with the local codes. Refer
to
Appendix C
on page 38 for speci
fi
cations.
Power Requirements (All currents are in amperes)
Model
Number
Description
Qty
Standby
Total
Standby
Alarm
Total
Alarm
PFC-5002,
PFC-5004,
PFC-5004E
PFC-5008
Fire Alarm Control
Panel
X
0.110
=
0.220
=
ZA-42
Zone Adder
Module
X
0.045
=
0.120
=
ARM-4/
ARM-8
Relay Module
X
0.005
=
0.160
=
PR-5100
Polarity Reversal
and City Tie
Module
0.035
=
0.300
=
UDACT-9100
DACT Module
0.045
=
0.120
=
RA8F
Remote
Annunciator
0.035
=
0.090
=
RTI-1
Remote Trouble
Indicator
0.035
=
0.035
=
Two-Wire Smoke Detectors
♦
0.0001
=
* 0.090
= 0.090
Four-Wire Smoke Detectors
X
=
=
Signal Load (bells, horns, strobes,
and etc.)
=
Auxiliary Power Supply for Remote Annunciators
Alarm
=
Total currents (Add above currents)
STANDBY
(
A
)
(
B
)
Total Current Requirement
ALARM (
B
)______ Amps.
Battery Capacity Requirement
(
[STANDBY (
A
) ______ ] X [(24 or 60 Hours) ___ ]
)
+
(
[ALARM (
B
) ______ ] X [
♣
Alarm in Hr.] _____
)
= (
C
) ______AH
* Assuming two NAC
circuits in alarm.
♣
Use
0.084
for
fi
ve minutes of alarm or
0.5
for thirty minutes of alarm as a multiplier
fi
gure.
♦
Using the
1400-A 2-wire smoke detector. See
Appendix A
on page 33 for other available smoke detectors.
Total Alarm Current
Must be 2.4 amperes or less for PFC-5002, and PFC-5004. NAC Circuits not to exceed 2.0 amperes.
•
Must be 6 amperes or less for PFC-5004E/ PFC-5008. NAC Circuits not to exceed 5 amperes.
•
Battery Selection
Multiply (C) by 1.20 to derate battery.
•
The PFC-5000 Series will charge BT-40 (4 AHr), BT-80 (8 AHr), BT-120 (12 AHr), BT-180 (18 AHr) or BA-240 (24
•
AHr)batteries (2 required)
The BT-180 and the BA-240 require a Listed Battery Cabinet.
•
