Instruction manual

P84515 E Sheet 22 of 23
5.0 BATTERY CALCULATION SHEET:
PS-12/24-8CP BATTERY CALCULATION SHEET
STANDBY CURRENT CALCULATIONS
Amps
1. The Standby Current for the PS-12/24-8CP is .060 Amps.
2. Enter the AUX current draw (0.06 Amps, 60 hour operation maximum)**
(0.20 Amps, 24 hour operation maximum) Amps
3. Add Steps 1 and 2 together Amps
4. Multiply Step 3 by the number of hours required.
24 Hours - Multiply by 24
60 Hours - Multiply by 60**
TOTAL STANDBY CURRENT IN Amp HOURS. AH
ALARM CURRENT CALCULATIONS
1. List notification appliance requirements.
CURRENT
ALARM CURRENT FOR THE PS-12/24-8CP 0.100
NOTIFICATION APPLIANCE
2. Calculate total notification appliance current plus alarm current for PS-12/24-8CP. Amps
3. Multiply Step 2 by alarm time required. 15 Min – Multiply by 0.25** AH
5 Min – Multiply by 0.0833 _________________________
**Note: 15 Minute alarm is not UL listed for 60 hour battery backup when AUX power is used.
BACKUP BATTERY REQUIREMENTS
1. Enter Standby Current. AH
2. Enter Alarm Current from Step 3 above. AH
3. Add Steps 1 and 2 together. AH
4. Multiply step 3 by 1.2 for minimum Backup Battery Requirements AH
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