Measuring The Backup Time; How To Measure Backup Time; Estimated Backup Time - Omron POWLI Instruction Manual

5

. Measuring the backup time

5
Measuring the backup time
5-1

How to measure backup time

Never touch the metal part of the input plug if it is disconnected while
the unit is operating.
● Doing so may cause an electric shock.
● The leak current of this product itself is less than the value of the safety standard (leak
current: 1 mA). However, leak current increases due to connected equipment. Therefore, never touch
the metal part of the input plug.
● When the product is operating, voltage is generated at the metal part of the input plug via capacitors in
the internal circuit regardless of elapsed time.
(1) When the AC input plug is connected to a wall outlet (commercial power), the battery automatically starts
charging, taking up to 8 hours to complete (24 hours when an additional battery unit is connected).
(2) Turn ON all devices connected to the unit.
(3) Turn off the commercial power and measure the backup time.
In Battery Mode, measure the time until the unit automatically stops and all displays disappear.
The power supply output of the unit will stop when the battery discharges. Conduct measurement
under a condition in which no problem occurs even if the power supply of the connected device stops
during the process. Do not conduct measurement if there is a possibility of a failure when the power
supply stops.
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) Convert the total capacity (power consumption) of the connected devices to watts (W).
For the indication of connected devices, check your computer and the rear of the display.
The indicator can show values in three different ways: volt-amperes (VA), amperes (A), and watts (W).
Example 1) 220 VAC, 50/60Hz, 185 W
Example 2) 220 VAC, 50/60Hz, 1.8 A
Example 3) 220 VAC, 50/60Hz, 190 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.)
(2) Add the values converted into W to obtain the total capacity of the connected devices.
42
Caution
Indication
VA
A
Value
× power factor = W
× power factor × 220 = W