12.Observe the following messages appear sequentially on the PPU status line:
WAITING FOR INPUT DC STARTING INVERTER STARTING SYNCING
ONLINE
The rectifier and inverter turn on. When the inverter reaches full voltage, UPS output contactor K3 closes and the static switch turns off supplying power to the critical load in Normal mode. It takes less than 1 minute for the UPS to achieve Normal mode.
13.The UPS is now operating in the Normal mode and the NORMAL status indicator is illuminated.
9.3Starting the UPS in Bypass Mode
If the Inverter Output of the UPS is not available and the critical load needs to be energized, 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.Select BYPASS from the System Control menu.
Bypass Mode Requested appears on the screen.
The critical load is immediately supplied by the bypass source, in Bypass mode.
9.The UPS is now operating in the bypass mode and the BYPASS status indicator is illuminated.
Powerware 9330 (10 | |
| 164201300 REV. G 061502 |
