990-5995E-001

Isolate a Single UPS from the Parallel System

Use this procedure to shut down one UPS in a running parallel system.

NOTE: Before initiating this procedure, ensure that the remaining UPS units can supply the load.
  1. Turn the SSIB of the UPS to the OFF (open) position.
  2. From the home screen on the display select Control > Inverter OFF > Single OFF .
  3. Turn the BBs of the UPS to the OFF (open) position.
  4. Turn the MIB of the UPS to the OFF (open) position.
  5. Turn the BIB of the UPS to the OFF (open) position.
  6. Turn the Ext. UOB of the UPS to the OFF (open) position.
DANGER
hazard of electric shock, explosion, or arc flash
  • Wait at least 5 minutes before removing the cover of the UPS after the display has turned off to allow for the capacitors to fully discharge.
  • Always measure for hazardous voltages on all terminals before working on the UPS.
Failure to follow these instructions will result in death or serious injury.
QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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