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Diagnostic Utility
The uninterruptible power supply has a diagnostic feature that displays the utility voltage.
Voltage
Plug the uninterruptible power supply into the utility power outlet.
The uninterruptible power supply starts a self-test as part of this procedure. The
self-test does not affect the voltage display.
Press and hold the
seconds, this five-LED Battery Charge
show the utility input voltage.
Refer to the figure at left for the voltage reading, corresponding to the configured nominal
output voltage.
The display indicates the voltage is between the displayed value on the list and the next
higher value.
If three LEDs are illuminated, the utility voltage is within the normal range. If no LEDs
are illuminated and the uninterruptible power supply is plugged into a properly function-
ing utility power outlet, the line voltage is extremely low. If all five LEDs are illuminated,
the line voltage is extremely high and should be checked by an electrician.
On Battery Operation
The IBM uninterruptible power supply switches to battery operation automatically if the utility power fails. While running on
battery, an alarm beeps four times every 30 seconds.
Press the
button to silence this uninterruptible power supply alarm. If the utility power does not return, the uninterruptible
power supply continues to supply power to the connected equipment until the battery is fully discharged.
If you are not using PowerChute, shut down the operating system and turn off the computer before the uninterruptible power
supply fully discharges the battery.
Determining On Battery Runtime
The uninterruptible power supply battery charges when connected to utility power. The battery charges to 90% capacity during
the first three hours of normal operation. Do not expect full battery run capability during the initial charge period.
Battery Runtime Table
This chart shows the typical on-battery runtime in minutes.
Load (VA)
100
200
300
400
500
600
700
750
800
900
1000
1200
1400
1440
1500
button to view the utility voltage bar graph display. After a few
Load
(watts)
50
30
60
122
184
247
311
377
447
500
511
579
700
790
936
1050
1050
8
display on the right of the front panel will
750VA
1000VA
105
224
57
127
28
64
18
41
13
29
9.7
23
7.7
18
6.4
15
5.0
13.5
–
12
–
11
–
8
–
–
–
–
–
–
–
–
1500VA
269
157
80
51
37
28
22
18
16.5
15
13
11
9.0
7.4
6.7
6.7
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