Eaton 93E MK2 - Single UPS Shutdown; Single UPS Restart

6.4.5 Single UPS Shutdown
To shut down the UPS:
1. Open the MOB for the UPS being shut
do wn.
2. Select the CONTROLS symbol on the main menu bar. The System Control screen is displa y ed.
3. If not already selected, select UPS on the System Control screen.
4. On the UPS System Control screen, select the NORMAL UPS OFF command, then press the RETURN
pushbut ton.
The
output and bypass backfeed relay open, and the power module is turned off on the UPS being shut do wn.
Logic
power remains on.
W ARNING
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
5. Open the UPS input and the
bypass feeder circuit breakers for the UPS being shut do wn.
6. If EBCs are installed, open all battery break ers
The UPS is now completely shut do wn.
6.4.6 Single UPS Restart
To restart a single UPS from a shutdown st ate:
1. Close the MOB for the UPS being
rest arted.
2. Close the UPS input and bypass feeder circuit breakers for the UPS being rest arted.
3. Close the input switc h.
4. If the UPSs are wired for dual input, close the bypass input switc h.
5. Close the output switc h.
6. Close the external battery break ers.
7. On the UPS being restarted, observe the UPS control panel display becoming active, indicating logic p owe r .
8. Verify no alarms are active on the UPS being rest arted.
9. On the UPS being restarted, select the CONTROLS symbol on the main menu bar. The System Control screen is
displa y ed.
10. If not already
selected, select UPS on the System Control screen.
11. On the UPS System Control screen, select the UPS OFF NORMAL command, then press the RETURN pushbut ton.
12. If requested, enter the Level 1 password. Default password is 1111.
The rectifier and inverter turn on. The inverter continues to ramp up to full v olt age.
Once the inverter
reaches full voltage, the UPS output contactor closes and the static switch turns of f . Power is now
supplied to the critical load in Standard Normal mode along with the other UPSs online. It takes approximately one
minute for the UPS to achieve Standard Normal mode.
The Normal
status indicator is illuminated.
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Eaton 93E MK2 UPS (10-40kVA, 380/400/415V) Installation and Operation