Panasonic Eco Solutions Nordic AB
MEW01472
Rev: -
Planning Instructions Fire alarm system EBL512 G3, United version 2.7.x
155
I
TN
shall be <
0.93 A
if the built-in battery is a 28 Ah battery, because
this results (theoretically) in 30 hours battery backup time.
I
TN
is max. 3.3 A but if the required battery backup time is 30 hours
I
TN
can be max.
0.93 A
.
Comments regarding (
I
TA
):
I
TA
has to be <
6.3 A
. (The battery charging will be turned off in
conjunction with fire alarm activated in the system.)
For the total EBL512 G3 current consumption in relation to
backup
time
, see tables in chapter "Battery (second power source)", page 155.
26.3
Rectifier (main power source)
The rectifier (5037) technical data is 230 V AC / 24 V DC, 6.5 A but
the main board fuse F1 = 6.3 A, i.e.
the total current consumption
incl. max. battery charging current must not at any time exceed
6.3 A
. Allowed input voltage is 176-264 V AC. The output voltage is
24 V with a tolerance of ±1%.
137
26.4
Battery (second power source)
Only batteries with a specified "Final voltage" of 10.5 V must be used.
Find out the required battery backup time, according to national
regulations / customer demands, in normal state and in alarm state.
Calculate the battery capacity required in normal state (
Q
N
) and the
battery capacity required in alarm state (
Q
A
) respectively.
Q
N
(Ah) = I
TN
(A) x battery backup time in normal state (h)
Q
A
(Ah) = I
TA
(A) x battery backup time in alarm state (h)
The total battery capacity
Q
=
Q
N
+
Q
A
(Ah)
The electrical capacity of the batteries varies with ambient
temperature and discharge current. Furthermore the battery voltage at
the end of a discharging period is not the same as at the start. For this
reason it is wise to round up the calculated capacity and add 10%, as
safety margin. Note! If the ambient temperature is below 20 °C the
safety margin has to be even larger since the electrical capacity of the
batteries decreases. At 0 °C add 30% and at 10 °C add 20% to the
calculated capacity.
The following tables show the relation between the total current
consumption in normal state (
I
TN
) and the backup time.
NOTE!
The values are calculated and will only give you a rough idea
of the backup time.
A battery < (24) 28 Ah
138
can be placed inside the control unit.
137
The output voltage is factory set to 24 V. On the rectifier is a
potentiometer for output voltage adjustment (±10%) available.
Do not use
this potentiometer
unless the output voltage is not 24 V.
138
The battery's physical size is 175 x 165 x 125 mm.
