Potter PFC-5000 Series - Manual (Page 43)

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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 specifi 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.
•