EACIE Evacuation Alert Control and Indicating Equipment
Page 35 of 38
Approved Document No. DFU5030020 Rev 1
Installation and Programming Manual
Appendix 3 – Standby Battery Calculation
The standby time of the EACIE panel, after the mains has failed, depends on the quiescent and alarm loading
of the panel, and the capacity of the batteries.
There are two options to determine the capacity of batteries required for any given standby period:
1.
Refer to the EACIE panel battery calculator tools available on C-TEC’s website
2.
Use the following formula:
C
min
= 1.25 (T
1
I
1
+ D I
2
T
2
)
where:
C
min
= minimum battery capacity when new at the 20 h discharge rate and at 20°C, in ampere hours (Ah);
T
1
= the total battery standby period in hours (h);
T
2
= the total battery alarm period in hours (h);
I
1
= the total battery standby load in amperes (A);
I
2
= the total battery alarm load in amperes (A);
D = a derating factor.
NOTES:
Where C
min
/20 is equal to, or greater, than I
2
, it can be assumed that D = 1.
When C
min
/20 is less than I
2
, the value of D should either be based on the battery manufacturer’s data or
be 1.75.
In practice, C
min
is unlikely to correspond exactly to an available battery capacity and therefore the next
highest available capacity size should be used.
Appendix 4 – Fitting the 2-Loop PCB (Optional)
An optional 2-Loop PCB (Part No. Z02LOOP/X) provides two additional analogue loop connections (Loop3 &
Loop4) if required. Note this PCB is not available for the 1 loop EACIE panel version (EAP1/8/CA/CHASSIS).
With reference to the diagram right:
Take the 2-Loop PCB and carefully align its holes up
with the four mounting holes on the Main 2-Loop PCB.
Insert the four PCB ‘plug-on’ pillars (supplied with the
2-Loop PCB) through the holes on the 2-Loop PCB and
into the holes on the Main 2-Loop PCB. Push the pillars
until they click and lock in position.
Refer to section 5.7 for analogue loop connections.