990-91379A-001

Start Up the UPS System from Maintenance Bypass Operation

NOTE: Only operate a breaker when the associated breaker indicator lamp is illuminated.
  1. If open, close the unit input breaker UIB.
    The display turns on. The rebooting sequence lasts approximately 3 minutes.
  2. Select Control > Guided sequences > Start up UPS system or Control > Guided sequences > Start up a UPS in a parallel system, and follow the steps which appear on the display.
  3. Generic start-up procedure for a UPS system with maintenance bypass breaker MBB:
    NOTE: The following are generic start-up procedures. Always follow the steps of the Guided sequences which are specific to your system
    1. If open, close the unit input breaker UIB.
    2. Close the static switch input breaker SSIB (if present).
    3. Close the bypass backfeed breaker BF2 (if present).
    4. Close the battery breaker(s).
    5. Select Control > Operation mode > Transfer to bypass operation if possible.
    6. Close the unit output breaker UOB.
    7. Repeat step a to e for other UPSs in a parallel system.
    8. Close the system isolation breaker SIB (if present).
    9. Open the maintenance bypass breaker MBB.
    10. Select Control > Inverter > Inverter on or press the inverter ON button (hold for five seconds) on the controller section.
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