Eaton Powerware 9355 - Operation; Control Panel Functions

OPERATION
EATON Powerware
®
9355 UPS (20/30 kVA) Installation and Operation Manual S 164201626 Rev B www.powerware.com
75
Parallel Operation
Initial startup must be performed by an authorized Eaton Customer Service Engineer.
This section describes shutting down and restarting UPSs in a parallel system.
Parallel System Shutdown
To remove power to the parallel UPS system output:
1. Press any button on the front panel display to activate the menu options.
2. Press the
button twice on the front panel display and then press the button
to select the TURN UPS ON/OFF menu.
3. Press the
button to select the System Off option; press the button.
4. Press and hold the
button for three seconds, until the UPS stops beeping.
The UPS removes power to the parallel UPS system output.
5. Press the
ESC
button until the Eaton Powerware logo or Mimic screen appears.
6. If you want to completely remove power from the UPS, continue to the following
section, “Individual UPS Shutdown (Parallel System),” to shut down each UPS.
Individual UPS Shutdown (Parallel System)
To shut down a single UPS in the parallel system:
1. Press any button on the front panel display to activate the menu options.
2. Press the
button on the front panel display and then press the button to
select the TURN UPS ON/OFF menu.
3. Press the
button to select the UPS Off option; press the button.
4. Press and hold the
button for three seconds, until the UPS stops beeping.
5. Remove the UPS front door (see page 10).
6. Switch the UPS input and battery circuit breakers to the OFF position.
7. If the optional UPS output circuit breaker is installed, switch the breaker to the
OFF position.
The UPS beeps and the front panel display flashes for approximately 45 seconds
as the logic power shuts down.
8. Replace the UPS front door.
9. Switch the UPS breaker on the Tie Cabinet to the OFF position.
NOTE If there is only one breaker for all UPSs, do not switch off utility power until all UPSs are shut down.
10. Switch off utility power where the UPS is connected.
If you are shutting down all the UPSs in a parallel system, repeat Steps 2
through 9 for each UPS then remove utility power.