Lenovo RT8.0kVA Installation And User Manual

Also see for RT11.0VA: Installation and user guide

Contents

Step 1. Put the UPS on Bypass: press any button to activate the menu options, select Control ➙ Goto Bypass.Step 2. Then, press Escape and select Settings ➙ In/Out settings ➙ High Efficiency mode.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 settingsThe following settings are available for configuring Bypass operation for special situations. Normally, thesesettings will not need to be changed.Bypass transfer out of toleranceStep 1. Press any button to activate the menu options, then select Settings ➙ Output settings ➙ Bypasstransfer.Step 2. Select Enabled or Disabled for BP AC NOK, and Enter to confirm. If Enabled, the UPS transfersto Bypass even if Bypass AC source is out of tolerance, depending on output mode. If Disabled,the UPS output is shut down.Interrupt timeThis setting is displayed to define the break duration during transfer to Bypass, only if transfer out oftolerance is enabled. 10 ms or 20 ms can be selected.Configuring battery settingsAutomatic battery testAutomatic battery tests are done every week in automatic charging mode and at each cycle in AdvancedBattery Management (ABM) mode. The frequency of the tests can be modified using the LCD panel: 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 warningDuring discharge, the low battery alarm is activated if the battery capacity goes below 20%. This thresholdcan be modified using the LCD panel.External battery settingThe number of Extended Battery Modules (EBMs) is automatically detected, or it can be set manually usingthe LCD panel: see "External battery" in “User settings” on page 10.Deep discharge protectionThis setting is recommended to avoid damaging the battery packs. The warranty is void if deep dischargeprotection is disabled.Chapter 5. Operation 43