To set the power strategy, complete the following steps:
1. Make sure that the UPS is in Standby mode.
2. From the main menu, press the down (
) button to scroll to the Configuration
menu, and press the OK button.
3. Press the down (
) button to scroll to Power Strategy, and press the OK
button.
4. Press the down (
) button to select the power strategy that you want to set
and press the OK button.
5. Press the OK button for 1 second to confirm.
Note: The UPS tests the bypass source for 5 consecutive minutes of stable power
before it transfers to High Efficiency mode.
Retrieving the alarm history
To retrieve the alarm history through the display, complete the following steps:
1. From the main menu, press the down (
) button to scroll to the Alarm history
menu, and press the OK button.
2. Press the down (
) button to scroll through the listed events, notices, and
alarms.
3. Press the escape (X) button to return to the previous menu.
Behavior on overload
The following table explains how the UPS responds to an overload condition.
Table 10. Behavior on overload
Overload
severity Load level On utility power
On Bypass / High
Efficiency On Battery / Converter
Level 1 100% 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 2 102% 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 > 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
Chapter 3. Operating the uninterruptible power supply 37
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