UPS Operating Instructions
6-12 Eaton 9E UPS (40–60 kVA, 208/220V) Installation and Operation Manual P-164000058—Rev 4 www.eaton.com/powerquality
17. 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, the UPS output relay closes and the static switch turns off. Power is
now supplied to the critical load in HE Normal mode. It takes approximately one minute for the UPS to
achieve HE Normal mode.
The Normal status indicator is illuminated.
18. If the UPS contains an output breaker, close the output breaker.
19. If an ITC with an input and output transformer is installed, close the output breaker.
6.3.2 Starting the UPS in Bypass Mode
If the inverter output of the UPS is not available and the critical load needs to be energized:
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
1. Unfasten the front door by lifting the latch from the bottom and turning to the right (counterclockwise) and
swing the door open (Figure 6-1).
2. Verify that the input breaker is open.
3. If the UPS contains a bypass breaker, verify that the bypass breaker is open.
4. Close the UPS input feeder circuit breaker.
5. If the UPS contains a bypass breaker, close the UPS Bypass input feeder circuit breaker.
6. If an ITC with an input transformer is installed, close the input and UPS input breakers.
7. If an ITC with an input and output transformer is installed, close the input, UPS input, and UPS output
breakers.
8. Close the input breaker.
9. If the UPS contains a bypass breaker, close the bypass breaker.
10. Close the door and secure the latch.
11. If EBCs are installed, close the battery breakers.
12. Observe the UPS control panel display becoming active, indicating logic power.
13. Verify no alarms are active.
14. Select the CONTROLS symbol on the main menu bar. The System Control screen is displayed.
15. If not already selected, select UPS on the System Control screen.
NOTE If two EBCs are installed, EBC 1 must be closed to supply DC input to the UPS. EBC
2 may be left open, but battery runtime will be reduced.
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