990-5452M-001

Start Up Parallel System from Maintenance Bypass Operation

Use this procedure to start up a parallel system from maintenance bypass operation with the load supplied through the MBB and all other breakers open.

NOTE: Only operate a breaker when the associated breaker LED is green.
  1. Close the unit input breaker UIB.
    This will power up the display interface after approximately 30 seconds.
  2. From the home screen on the display, select Control > Startup Wizard. Select Startup from Maintenance Bypass and follow the steps which appear on the screen.
    NOTE: The following is a generic start-up procedure. Always follow the steps of the Startup Wizard which are specific to your system.
  3. Close the static switch input breaker SSIB.
  4. Close the backfeed protection switch (BF2) (if present), if it is open.
  5. Close the battery breakers in your specific battery solution.
  6. Initiate transfer to static bypass by tapping the Transfer Load to static bypass button on the display interface.

    In systems with kirk-keys, the key is released from the solenoid key release unit.

    If the UPS system does not transfer to static bypass, go to Status > Active Alarms to see if there are active alarms that prevent the UPS system from transferring to static bypass.

  7. Close the unit output breaker UOB.
  8. Repeat steps 1 to 7 for the remaining UPS units in the parallel system before continuing.
  9. In systems with kirk-keys, insert the key from the solenoid key release unit in the lock on the system isolation breaker SIB and turn to unlock.
  10. Close the system isolation breaker SIB.
  11. Open the maintenance bypass breaker MBB.
    The system automatically transfers to normal operation.
  12. In systems with kirk-keys, turn the key in the lock of the maintenance bypass breaker MBB to lock open.
    The key is released.
  13. In systems with kirk-keys, insert the key in the solenoid key release unit and turn to capture the key.
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