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5. Measuring the backup time
Cautions
When the input plug accidentally become removed while the UPS is
running, never touch the metal part of the input plug.
●
Doing so may cause an electric shock.
●
A leak current of the UPS is less than the value of safety standard (leak current: 1mA) however,
the leak current may increase due to the devices connected. Therefore, never touch the metal part of the
input plug.
5. Measuring the backup time
5-1 Measuring method of the backup time
(1) Put the AC Input Plug of the UPS in a wall outlet (commercial power) and change the battery
for at least 8 hours.
(You may turn on the Start switch and get devices linked the UPS running.)
(2) Turn on all devices connected the UPS.
(Including devices connected to the AC receptacle of your PC.)
(3) Remove the AC Input Plug of the UPS and check a backup time.
* The backup time you measure for the first time after purchase is the "initial value of the backup
time."
Initial value of the backup time:
minutes
seconds
5-2 Estimated backup time
The backup time varies depending on the capacity of devices connected to the UPS.
After calculating the total capacity of devices connected to the UPS, refer to the graph of the backup time to
obtain an estimate initial value of the backup time.
(1) Convert the total capacity (power consumption) of devices linked to the UPS to watts.
Check the unit of these devices connected to the UPS.
There are 3 units: VA, A, and W
Example 1)
100VAC, 50/60Hz, 145W
Example 2)
100VAC, 50/60Hz, 1.8A
Example 3)
100VAC, 50/60Hz, 150VA
For the devices with the units of VA and A,
convert VA and A to W. See the right table for
the conversion.
(2) Sum up the values converted in W and obtain
the total capacity of the devices connected
to the UPS.
(3) Obtain the initial value of the backup time for
the total capacity of the devices connected
to the UPS from the graph on the right.
Unit
Value
VA
x 0.6 = W
A
x 60 = W
40 minutes
20 minutes
10 minutes
5 minutes
350W
700W
1.4KW
BU MB200XR2
(Two add-on battery)
BU100XR2
BU MB100XR2
(One add-on battery)
BU MB200XR2
(One add-on battery)
BU200XR2
●
Graph of backup time
(initial value of a fresh battery)
●
A backup time is inversely proportiona
the capacity of devices linked to the U
