5 Measuring the backup time
5-1 How to measure backup time
BW40T/BW55T/BW100T/BW120T
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5 Measuring the backup time
5-1 How to measure backup time
1.
Connect the AC Input Plug of the UPS to a wall outlet (commercial power) and
charge it for approximately over 12 hours.
2.
Turn ON all connected device.
Turn ON devices connected to the AC outlet of your computer.
Operate them in a way in which it is allowable that power supply to the
connected devices stops.
3.
Disconnect the AC Input Plug of the UPS and measure the backup time.
Measure the time until the unit automatically stops and all displays disappear with
the plug disconnected.
5-2 Estimated backup time
The backup time varies depending on the capacity of connected devices.
After calculating the total capacity of connected devices, refer to the graph of the backup
time to obtain an estimation of the initial value of the backup time. (This is also applied to
checking the battery.)
1.
Unify the total capacity (power consumption) of connected devices to W (Watt).
For the indication of connected devices, check your computer and the rear of the
display.
There are 3 types of indication: VA (Volt·Ampere) indication, A (Ampere) indication,
and W indication.
Example 1) 100 VAC, 50/60Hz, 145 W
Example 2) 100 VAC, 50/60Hz, 1.8 A
Example 3) 100 VAC, 50/60Hz, 150 VA
For devices that use the VA or A indication,
convert the capacity into W. Multiply the value indicated on devices by the value in
the right table for conversion.
When the power factor is unknown, enter “1”. The power factor usually ranges
between 0.6 and 1.
Indication
Value
VA
W = VA× power factor
A
W = VA× power factor× 100
The backup time you measure for the first time after purchase is the "initial
value of the backup time.”
After charging is complete, it is automatically executed.
