RST050
INSTALLATION
&
USER
MANUAL
13
Operational Time for Defined Charge Periods
The backup operational time of the RST050 assuming 22+2 duty cycles may be
calculated for a range of charge times given the charge take-up efficiency and the
load power. It is assumed that the supply to the RST050 is capable of supplying 30W
during the whole charge period. The results tabulated below indicate the sustainable
operational time allowed. That is, the time the RST100 may be operated for no
overall energy loss by the RST050.
This information is of use where the RST050 is installed as a UPS for the RST100,
and the backup time is to be estimated at times subsequent to a power outage.
Charge
Period
(hours)
Total Energy
Supplied to
RST050
(Wh)
Energy
Returned to
Batteries
(Wh)
Backup Time
(hours)
Total
Operational
Time
(hours)
1
30 10 3.03
4.03
2
60 20 6.06
8.06
3
90 30 9.09
12.09
4
120 40 12.12
16.12
5
150 50 15.15
20.15
6
180 60 18.18
24.18
7
210 70 21.21
28.21
8
240 80 24.24
32.24
The Total Operational Time is the sum of the Backup Time and the Charge Period.
