4 Maintenance and Inspection
4-1 Checking the battery
BU150R
63
4
4-1-4 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)
AC100V
、
50/60Hz
、
145W
AC100V
、
50/60Hz
、
1.8A
AC100V
、
50/60Hz
、
150VA
Indication
Value
A
A × power factor × 100 = W
VA
VA × power factor × 100 = W
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.
3.
Calculate the initial value of the backup time for the total capacity of the connected
devices from the graph on the next page.
* The smaller the capacity of connected devices becomes, the longer the backup
time becomes.
* The smaller the capacity of connected devices becomes, the longer the backup
time becomes.
Summary of Contents for BU150R
Page 22: ...2 Installation and connection 2 1 Installation BU150R 22 Incorrect Positions...
Page 92: ...7 How to use option cards 7 3 SNMP Web card BU150R 92 7 3 SNMP Web card LAN 10 100...
Page 102: ...10 References 10 2 Dimensions BU150R 102 Stand for vertical layput 200 200 70 50 70 50...
Page 103: ...10 References 10 2 Dimensions BU150R 103 10 Rubber feet 23 25 405 50 40 358 40 3...
Page 104: ...10 References 10 2 Dimensions BU150R 104 Using Ear brackets 44 5 22 0 13 5 455 25 465...