Powerware 9330 - Manual (Page 119)

9--5 Powerware 9330 (10 kVA--40 kVA) Installation and Operation
164201300 REV. G 061502
13. Observe the following messages appear sequentially on the PPU status line:
WAITING FOR INPUT
DC STARTING
INVERTER STARTING
SYNCING
ONLINE
The inverter turns on. When the inverter reaches full voltage, UPS output contactor
K3 closes supplying power to the critical load in Normal mode. It takes less than 1
minute for the UPS to achieve Normal mode.
14. The UPS is now operating in the Battery mode and the BATTERY status
indicator is illuminated.
9.6 Transfer from Normal to Bypass Mode
To transfer the critical load to bypass mode, perform the following procedure:
WARNING:
In Bypass Mode, the critical load is not protected from commercial power
interruptions and abnormalities.
1. Press the System Control pushbutton. The System Control screen appears.
2. Select BYPASS from the System Control menu.
Bypass Mode Requested appears on the screen.
The UPS switches to Bypass mode and the critical load is immediately supplied by
the bypass source. If the bypass source is not available, the power processor
remains on and an alarm sounds.
3. The UPS is now operating in the bypass mode and the BYPASS status
indicator is illuminated.
The PPU status indicates READY. System is now on bypass and UPS power
processor remains on.
WARNING:
Power is present inside the UPS and Options cabinets.