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Powerware 9330 (10 kV A--40 kVA) Installation and Operation
164201300 REV. G 061502
9.5 Cold Starting the UPS
To start the UPS system when commercial power is not available, perform the
following procedure:
NOTE: Output to the load will be limited to the available energy in the battery supply
when the UPS is operated in this mode. In order to continue suppling and
protecting the load, the Bypass and/or Rectifier sources should be made
available as soon as possible. To ensure that the UPS automatically begins
using the Bypass and/or Rectifier sources when commercial power returns,
set circuit breakers as instructed in steps 2 through 5.
1. Ensure the UPS circuit breakers and switches are set as follows:
UPS Input Breaker (CB1)
OPEN
UPS Battery Breaker (CB2) OPEN
UPS Maintenance Bypass Switch UPS
Options Cabinet Maintenance Bypass Switch (if installed) UPS
2. Close the UPS input feeder circuit breaker.
3. If UPS is dual feed, close UPS Bypass input feeder circuit breaker.
4. If Options cabinet is installed, close Options cabinet Input, Bypass, and Output
circuit breakers.
5. On the UPS, close Input breaker CB1.
6. On the UPS, close Battery breaker CB2.
7. If installed, close the Battery breakers on Battery cabinets.
8. Press and hold Cold Start pushbutton switch while DC Link ramps up and
precharges system. Continue to hold pushbutton switch until contactor K2
closes.
9. Observe UPS monitor screen becoming active as an indication of logic power.
The LCD screen will illuminate and show a graphical representation of the system.
10. Press the System Control pushbutton. The System Control screen appears.
11. On the System Control screen, the PPU status should indicate SHUTDOWN,
after approximately 20 seconds
NOTE: If no operation is selected in step 12, system will shut down after one
minute.
12. Select NORMAL or HI--EFF from the System Control menu.
Normal Mode Requested appears on the screen.
The status indicator on the UPS Control Panel indicates the UPS is in Normal---Battery
mode.