UPS Operating Instructions
Eaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality 6-29
8. Repeat Steps 4 through 7 selecting UPM 2 to shut down UPM 2.
The UPM status indicates SHUTDOWN. The input, output, and battery switchgear open, and the power
module is turned off.
Logic power remains on.
9. Repeat Steps 4 through 7 selecting UPM 3 to shut down UPM 3.
The UPM status indicates SHUTDOWN. The input, output, and battery switchgear open, and the power
module is turned off.
Logic power remains on.
Power is present inside the UPS cabinet until the upstream input feeder circuit breakers and
battery breakers are opened.
10. Open the all of the UPSs input feeder circuit breaker.
11. If dual feed, open all of the UPSs bypass feeder circuit breaker.
12. If IBCs are installed, open all battery breakers.
The UPS is now completely shut down.
6.4.13 Single UPS Restart
To restart a single UPS from a shutdown state:
1. Close the MOB for the UPS being restarted.
2. Close the UPS input feeder circuit breaker for the UPS being restarted.
3. If dual feed, close the UPS bypass feeder circuit breaker for the UPS being restarted.
4. If IBCs are installed, close the battery breakers for the UPS being restarted.
5. On the UPS being restarted, observe the UPS control panel display becoming active, indicating logic
power.
6. Verify no alarms are active.
7. On the UPS being restarted, tap the CONTROLS tab on the main menu navigation bar. The System
Control screen is displayed.
8. Tap the GO ONLINE button.
9. 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 voltage.
Once the inverter reaches full voltage, all UPS inverter switchgear close and the static switches turn off.
Power is now supplied to the critical load in dual conversion mode from all UPSs. It takes approximately
one minute for the UPSs to achieve the dual conversion mode.
The Normal status indicator is illuminated.
NOTE If the UPS is starting on a bus with other online paralleled UPSs, the UPS will not go
to bypass during startup. The UPS will start, sync to the other UPSs online, and go
online.
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