Toa FS-7000 SERIES Installation - Manual (Page 62)

62
[Calculation Example]
Storage battery capacity required for a system of the following configuration to operate for 10 minutes after
waiting for an hour from the start of a power failure can be calculated as follows:
System Configuration Current Consumption (A)
Operation Mode
0.20
0.45
0.13
0.07
0.05
0.90
Model No.
FS-7000CP
FS-7000JP
FS-7000EV
FS-7000PS
DS-029B
Total
Quantity
1
1
1
1
1
-
Standby Mode
0.00
0.00
0.01
0.00
0.03
0.04
K
1
: 1.80 (60 minutes of standby time + 10 minutes of operation time = 70-minute capacity conversion time)
K
2
: 0.333 (capacity conversion time for 10-minute operation time)
I
1
: 0.04 A (total standby current consumption from the above table)
I
2
: 0.90 A (total operation current consumption from the above table)
Battery capacity C (Ah) = [ 1.8 x I
1
+ 0.333 ( I
2
- I
1
) ]
= [ 1.8 x 0.04 +0.333 ( 0.90 - 0.04 ) ]
= 0.45
From this, it can be seen that if a battery with capacity of 0.45 Ah is used, the system will be able to operate
for 10 minutes.
1
0.8
1
0.8