HCA Series Installation Manual
Page 14 of 58
V2.15
Table 3.3.2 Worst Case Battery Current Calculations
Devices
Number of Devices
Current per device
Standby
Current
Alarm
Current
Multiply This Column
By This Column
To Get Standby/Alarm
Currents
Main Panel
HCA Panel
1
Standby: 0.160A
0.160A
Alarm: 0.290A
0.290A
Panel Relays
Alarm relay
1
Standby: 0.0A
0.0A
Alarm: 0.025A
0.025A
Trouble relay
1 (trouble relay OFF
due to loss of AC)
Standby: 0.0A
0.0A
Alarm: 0.0A
0.0A
Relay 1
Standby: 0.0A
0.0A
Alarm: 0.025A
Relay 2
Standby: 0.0A
0.0A
Alarm: 0.025A
Relay 3
Standby: 0.0A
0.0A
Alarm: 0.025A
Remote Annunciator
Number of
Remote
Annunciators
(maximum 1)
Standby: 0.012A
Max Alarm: 0.030A
Zones
Number of Zone 1
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 2
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 3
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 4
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 5
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 6
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 7
Detectors
Standby:
Max Alarm: 0.040A
Number of Zone 8
Detectors
Standby:
Max Alarm: 0.040A
Notification Appliances or Auxiliary Power Devices
Output 1
Standby:
Alarm:
Output 2
Standby:
Alarm:
Output 3
Standby:
Alarm:
Output 4
Standby:
Alarm:
Total Worst Case Standby Current
A
Total Worst Case Alarm Current
A
Number of Standby hours required (typically 24 hours)
H
Number of Alarm hours required (5 minutes is 0.0833 hours)
H
Number of Standby amp-hours (standby amps X standby hours)
AH
Number of Alarm amp-hours (alarm amps X alarm hours)
AH
Total battery amp hours required (add standby and alarm AHs)
AH
