Transfer a Single UPS from Maintenance Bypass Mode to Normal Mode

  1. Check that all disconnection devices except MBB are in the OFF (open) position.
  2. Turn the SSIB to the ON (closed) position.

    The display turns on and the Home screen is shown.

  3. Turn the unit output breaker UOB to the ON (closed) position. Wait approximately 20 seconds until the bypass LEDs turn yellow.

    The UPS starts up in static bypass mode.

  4. Turn the unit input breaker UIB to the ON (closed) position.

    The rectifier ramps up.

  5. Turn the battery breaker BB(s) to the ON (closed) position.
  6. Turn the maintenance bypass breaker MBB to the OFF (open) position.

    The UPS automatically transfers to normal mode.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

Was this helpful?