Powerware 9330 - Manual (Page 117)

9--3 Powerware 9330 (10 kVA--40 kVA) Installation and Operation
164201300 REV. G 061502
9.4 Starting the Power Processing Unit
To start the Power Processing Unit (PPU) without transferring the critical load to
normal, perform the following procedure:
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. Observe UPS monitor screen becoming active as an indication of logic power.
6. Press the System Control pushbutton. The System Control screen appears.
7. On the System Control screen, the PPU status should indicate SHUTDOWN,
after approximately 20 seconds
8. On the UPS, close Input breaker CB1.
9. On the UPS, close Battery breaker CB2.
10. If installed, close the Battery breakers on Battery cabinets.
11. Select PPU ON from the System Control menu.
PPU ON Mode Requested appears on the screen.
The critical load is immediately supplied by the bypass source, in Bypass mode. The
status indicator on the UPS Control Panel indicates the UPS is in Bypass mode.
12. Observe the following messages appear sequentially on the PPU status line:
WAITING FOR INPUT
DC STARTING
INVERTER STARTING
SYNCING
READY
The rectifier and inverter turn on. When the inverter reaches full voltage,the UPS is
ready to transfer to the Normal mode and supply the critical load.
13. The UPS is now operating in the Bypass mode and the BYPASS status
indicator is illuminated.