Instruction manual

P84662J Page 27 of 28
5.0 BATTERY CALCULATION SHEET:
PS-24-8MC BATTERY CALCULATION SHEET
STANDBY BATTERY CALCULATION
Amps
1. The Standby Current for the PS-24-8MC is 0.080 Amps.
2. If in the CP mode of operation enter the AUX current draw
(0.060 Amps, 60 hour operation maximum) Amps
(0.200 Amps, 24 hour operation maximum)
3. Add Steps 1 and 2 together Amps
4. The number of hours in standby.
24 Hours Standby = 24
60 Hours Standby = 60
Hours
5. Multiply the answer from Step 3 with Step 4 AH
6. If the LONG DELAY is selected for AC Trouble reporting enter 0.29AH
otherwise enter 0.00AH. AH
7 Add Step 5 and 6 together for the Total Standby Battery Requirement in Amp Hours. AH
ALARM BATTERY CALCULATION
1. List notification appliance requirements.
CURRENT
ALARM CURRENT FOR THE PS-24-8MC 0.240
NOTIFICATION APPLIANCE
2. Calculate total notification appliance current plus alarm current for PS-24-8MC. Amps
3. Multiply Step 2 by alarm time required for the Alarm Battery Requirement. AH
15 Min : Multiply by 0.25
5 Min : Multiply by 0.0833
TOTAL BACKUP BATTERY REQUIREMENTS
1. Enter Standby Battery Requirement from “STANDBY BATTERY CALCULATION” Step 5. AH
2. Enter Alarm Battery Requirement from “ALARM BATTERY CALCULATION” Step 3. AH
3. Add Steps 1 and 2 together. AH
Multiply Step 3 by 1.1 for minimum Backup Battery Requirements. AH