990-6537C-001

Isolate a Single UPS with One Internal Switch 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 UPSs can supply the load.
NOTE: The following is a generic shutdown procedure. All the switches/breakers mentioned may not be present in your specific system.
  1. On this UPS, select Control > Inverter > Inverter off. Tap OK on the confirmation screen.
  2. Open UOB for this UPS.
  3. Open SSIB (if present) for this UPS.
  4. Open the battery breaker(s) for this UPS.
  5. Open UIB for this UPS.
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