Installation guide

UPS 40-160 kVA, 400 V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
42
2. Close UPS Bypass input feeder circuit breaker.
3. Observe UPS Control Panel display screen becoming active as an indication of 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 the bypass mode and the BYPASSstatus indicator is
illuminated.
7.3 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. Close UPS Bypass input feeder circuit breaker.
3. Observe UPS Control Panel display screen becoming active as an indication of 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.
8. Observe the following messages appear sequentially on the Power Module (PM) status
line:
DC STARTING
INVERTER STARTING
INVERTER 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.