Starting The Ups In Bypass Mode - Powerware 9390 Installation & Operation Manual

UPS Operating Instructions
8. Close battery breaker any time after INVERTER SYNCING or CLOSE BATTERY
9. The UPS is now operating in the Normal mode and the NORMAL status indicator

9.2 Starting the UPS in Bypass Mode

If the inverter output of the UPS is not available and the critical load needs to be
energized, perform the following procedure:
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
5. On the System Controls screen, the Power Module (PM) status should indicate
6. Press the BYPASS pushbutton on the System Controls menu bar.
7. The UPS is now operating in the bypass mode and the BYPASS status indicator is
9.3 Starting the Power Module
To start the Power Module without transferring the critical load to normal, perform the
following procedure:
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
5. On the System Controls screen, the Power Module (PM) status should indicate
6. Press the
7. Press the PM ON pushbutton on the System Controls menu bar.
9-2
appears on the display.
is illuminated.
screen appears.
SHUTDOWN.
The critical load is immediately supplied by the bypass source, in Bypass mode.
illuminated.
screen appears.
SHUTDOWN.
pushbutton to display System Controls Screen 2.
Powerware 9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev A
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