Calculation For Standby Battery Requirement - Secutron MR-2602 Installation Manual

2.8 Calculation for Standby Battery Requirement

Step Device
1 MR-2602
Zone 1
Zone 2
NAC 1
2
3
NAC 2
MR-2605-T
4
MR-2605-AT
MR-2806
MR-2605-R3
5 AUX+
6 Total 'standby' and 'alarm' current:
7 Divide 'standby' mA and 'alarm' mA by 1000:
8 Select 'standby' time required (24 or 60 Hr.):
Standby Amp-Hr. - multiply 8 × 7 = (Amps × Hr.):
9
10 Select 'alarm' time required
11 Alarm Amp-Hr. - multiply 7 × 10 = (Amps × Hr.):
12 Total Amp-Hr = standby Amp-Hr (9) + alarm Amp-Hr. (11):
13 Multiply the total Amp-Hr. by the safety margin:
Total battery Amp-Hr required to support the system:
14
Select a battery with an Amp-Hr. rating that is equal to or larger than the calculated minimum Amp-
Note:
Hr. battery required.
Current per
device (mA)
Standby: 90
Alarm: 365
Standby:
Alarm: 69
Standby:
Alarm: 69
Alarm:
Alarm:
Standby: 15
Alarm: 15
Standby: 15
Alarm: 25
Standby: 45
Alarm: 60
Standby: 0
Alarm: 24
Standby:
Alarm:
(0.08 or 0.5)
:
MR-2602 Installation & Operator's Manual
Number
Standby
of device
Current (mA)
x 1 = 90
x 1 =
x =
x 1 =
x =
x 1 =
=
x
=
x
x
x
x
x
x
x
x =
x
x =
x =
mA
Amp
Hr.
1.20
Total Total Alarm
Current
(mA)
365
69
mA
Amp
Amp-Hr.
Hr.
Amp-Hr.
Amp-Hr.
Amp-Hr.
7