Potter PSN-64 - Battery Calculation Worksheet

PSB-10:8
PSN-106, PSN-64, PSB-10 • 5403590 • REV A • 12/09
Secondary Power Supply Requirements Table
Service Use Standby Time
NFPA 72
• Central Station (PPU) 24 hours
• Local 24 hours
Calculation Table
1 2 3 4
Module/Device Quantity mA Per Unit Total Current
x 0.001
Total mA
Convert to A
(* Refer to Maximum allowable standby current)Total A
Multiply by hours
Total AH
Effi ciency Factor
Required AH
Use a battery with a higher AH rating than Required AH
x ___
Battery Calculation Worksheet
Standby current for both the PSB-10 is 30 milli-amps.
÷ 0.85
PSB-10 1 30 30
* Maximum Allowable Standby Current (24-hour standby time)
Battery Size UL 24-hour ULC 24-hour
7 AH .213 Amps .213 Amps
18 AH .603 Amps .603 Amps
33 AH 1.134 Amps .603 Amps
55 AH 1.913 Amps .603 Amps