PREMIER EVACS 1-16 INSTRUCTION MANUAL: 2-ZONE NETWORKED VOICE ALARM PANEL
Document no: GLT-237-7-1
PAGE 30
Issue: 1.5
Date: 02/04/2014
Battery calculation worksheet
This worksheet can be filled out to calculate the batteries size required for a given installation.
Standby requirements
Quiescent current
A
Auxiliary equipment
A
Total standby current
A
x standby time of:
h
=
Ah
(1)
Alarm requirements
System current
A
Auxiliary equipment
A
Sounder circuit 1
A
Sounder circuit 2
A
Audio channel 1
A
Audio channel 2
A
Total Alarm current
A
x alarm time of:
h
=
Ah
(2)
Total capacity requirements
Sum of
(1)
and
(2)
=
(1)
Ah
+
(2)
Ah
=
Ah
(3)
Minimum battery capacity
=
(3)
Ah
x 1.25
=
Ah
When selecting the correct battery, choose a battery with a higher capacity than the calculated minimum.