Dell UPS 3750R - Manual (Page 29)

49 Operation
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Retrieving the Event Log
To retrieve the Event Log through the display:
1 Press the button for one second to go to the main menu selection and scroll down to the
Event Log menu using the button.
2 Press the button to enter the Event Log list.
3 Scroll through the listed events, notices, and alarms using either the button or the button.
4 To return to the main menu, press the button for one second. The Event Log displays.
5 Press the button. The UPS status screen displays.
Behavior on Overload
See Table 7 for an explanation of how the UPS responds to an overload condition.
Table 7. Behavior on Overload
Overload
Severity
Load Level On Utility Power
On Bypass/High
Efficiency Mode
On Battery
Level 1 Load 100% to
101% Overload alarm only and
support load indefinitely Overload alarm only
and support load
indefinitely Overload alarm only,
support load until low
battery shutdown level
is reached
Level 2 Load 102% to
110% Transfer to Bypass after
12 seconds (±1 sec)
If Bypass is not available,
transfer to Fault mode after
12 seconds (±1 sec)
Transfer to Fault mode
in 2 minutes (±1 sec) Transfer to Fault mode
after 12 seconds
(±1 sec) or until low
battery shutdown level
is reached
Level 3 Load > 110% Transfer to Bypass immediately
If Bypass is not available,
transfer to Fault mode in
300 ms to 1 sec
Transfer to Fault mode
in 300 ms to 1 sec Transfer to Fault mode
in 300 ms to 1 sec