INFINITY ID2 INSTALLATION MANUAL.
Software Versions: PANEL 1.N & LOOP O.N
Approved Document No: GLT-211-7-1
Issue 1.9 Author: MG/NJ Date: 06/04/2016
PAGE 40
20. STANDBY BATTERY REQUIREMENTS
20.1 Standby battery calculation
In order to calculate the standby battery size required, the following formula can be used:-
Battery Size (Standby time in Amp Hours) = 1.25 x [(Df x T
ALM
x I
ALM
)+ (T
SBY
x I
Q
)]
(DF is a derating factor (typically = 2) used when a battery has to supply a high current load)
Where:
T
ALM
= Maximum time in hours required for the alarm [½ hour is most common time]
I
ALM
= Total Alarm Current in amps for all alarm devices connected to the alarm circuits
T
SBY
= Standby time in hours for the system after mains failure [normally 24, 48 or 72 hr]
I
QP
= Quiescent current in amps of control panel in fault condition [because of mains failure]
I
QZ
= Quiescent current in amps of all detection zones.
20.2 Device Values for Battery calculation
Device
Quiescent Alarm Comment
ID2 Panel
50mA
102mA
This is the current used
during mains failure
ID2 Repeater
50mA
75mA
Fyreye MKII Addressable Optical Smoke Detector
0.5mA
5 mA
Fyreye MKII Addressable Heat Detector
0.5 mA
5 mA
Fyreye MKII Fixed Temperature Heat Detector
0.5 mA
5 mA
Fyreye MKII Addressable Opto-Heat Detector
0.5 mA
5 mA
Zeta Addressable Manual Call Point
0.6 mA
2.5 mA
Zeta Addressable Weatherproof Manual Call Point
0.6 mA
2.5 mA
Fyreye MKII Addressable Xtratone Sounder
0.6 mA
4.5 mA
Fyreye MKII Addressable Xtratone Sounder Flasher
0.65 mA
7.4 mA
Fyreye MKII Addressable Xtratone Flasher
0.6 mA
5.5 mA
Sandwich Sounder Base
0.6 mA
4 mA
Sandwich Sounder Flasher Base
0.65 mA
7.5 mA
Zeta Fyreye MKII Input Unit
1.0 mA
3.6 mA
Zeta Fyreye MKII Input Output Unit
1.0 mA
3.6 mA
Zeta Fyreye MKII Input Output Unit – mains switching
1.3 mA
2.9 mA
Zeta Fyreye MKII Sounder Control Module
0.6 mA
0.8 mA
Zone Fyreye MKII Zone Monitor Unit
3.5 mA
19 mA