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Setting High Efficiency mode
In High Efficiency mode, the UPS is in Bypass mode and transfers to Battery mode in less than 10
microseconds (ms) when utility power fails. Transfers to High Efficiency (HE) mode will be active after
5 minutes of Bypass voltage monitoring: if Bypass quality is not in tolerance, then the UPS will remain
in Online mode.
To set High Efficiency mode:
Put the UPS on Bypass: press any button to activate the menu options, select Control ➙ Go
Step 1.
to Bypass.
Then, press Escape and select Settings ➙ In/Out settings ➙ High Efficiency mode.
Step 2.
Step 3.
Select Enabled and Enter to confirm.
The UPS goes into Bypass mode and transfers to Battery mode in the event utility power fails.
Configuring Bypass settings
The following settings are available for configuring Bypass operation for special situations. Normally, these
settings will not need to be changed.
Bypass transfer out of tolerance
Press any button to activate the menu options, then select Settings ➙ Output settings ➙ Bypass
Step 1.
transfer.
Step 2.
Select Enabled or Disabled for BP AC NOK, and Enter to confirm. If Enabled, the UPS transfers
to Bypass even if Bypass AC source is out of tolerance, depending on output mode. If Disabled,
the UPS output is shut down.
Interrupt time
This setting is displayed to define the break duration during transfer to Bypass, only if transfer out of
tolerance is enabled. 10 ms or 20 ms can be selected.
Configuring battery settings
Automatic battery test
Automatic battery tests are done every week in automatic charging mode and at each cycle in Advanced
Battery Management (ABM) mode. The frequency of the tests can be modified using the LCD p anel: see
"Automatic battery test" in "User settings" on page 10.
During the test, the UPS goes into Battery mode and discharges the battery packs for 25 seconds under load.
Note: Battery mode is not displayed and battery low alarm does not activate during a battery test.
The battery test might be cancelled due to bad conditions, or fail.
Low battery warning
During discharge, the low battery alarm is activated if the battery capacity goes below 20%. This threshold
can be modified using the LCD panel.
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3U Rack or Tower UPS RT5.0kVA and RT6.0kVA Installation and User's Guide
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