Powerware 9390 UPS 100160 kVA - Manual (Page 110)

UPS OPERATING INSTRUCTIONS
EATON Powerware ® 9390 UPS (20–80 kVA) Installation and Operation Manual S 164201603 Rev 2 www.powerware.com 9-2
8. Close the battery breaker any time after INVERTER SYNCING or CLOSE
BATTERY appears on the display.
Once the inverter reaches full voltage, and the battery breaker is closed, the UPS
output contactor K3 closes and the static switch turns off. Power is now supplied
to the critical load in Normal mode. It takes approximately 1 minute for the UPS
to achieve Normal mode.
9. The UPS is now operating in Normal mode and the NORMAL status indicator is
illuminated.
9.1.2 Starting the UPS in Bypass Mode
If the inverter output of the UPS is not available and the critical load needs to be
energized:
C A U T I O N
In Bypass mode, the critical load is not protected from commercial power interruptions and abnormalities.
1. Close the UPS input feeder circuit breaker.
2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.
3. Observe the UPS control panel becoming active, indicating logic power.
4. Press the CONTROLS pushbutton on the main menu bar. The System Controls
screen appears.
5. On the System Controls screen, the power module (PM) status should indicate
SHUTDOWN.
6. Press the BYPASS pushbutton on the System Controls menu bar.
The critical load is immediately supplied by the bypass source, in Bypass mode.
7. The UPS is now operating in Bypass mode and the BYPASS status indicator is
illuminated.
9.1.3 Starting the Power Module
To start the power module without transferring the critical load to normal:
1. Close the UPS input feeder circuit breaker.
2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.
3. Observe the UPS control panel becoming active, indicating logic power.
4. Press the CONTROLS pushbutton on the main menu bar. The System Controls
screen appears.
5. On the System Controls screen, the power module (PM) status should indicate
SHUTDOWN.
6. Press the pushbutton to display System Controls Screen 2.
7. Press the PM ON pushbutton on the System Controls menu bar.