84 Eaton 93E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164000301—Rev 04
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To transfer the load to HE Normal mode:
1. Select the CONTROLS symbol on the main menu bar. The System Control screen is displayed.
2. If not already selected, select UPS on the System Control screen.
3. On the UPS System Control screen, select the HE: DISABLE
ENABLE command, then press the
RETURN pushbutton.
All of the UPSs transfer to HE Normal mode if no abnormal power conditions are detected. If abnormal
power conditions are detected, the UPSs will wait and transfer to HE mode when conditions are cleared.
The NORMAL status indicator is illuminated.
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To shut down a single UPS:
1. Open the MOB for the UPS being shut down.
2. Select the CONTROLS symbol on the main menu bar. The System Control screen is displayed.
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
pushbutton.
The inverter and bypass switchgear open, and the power module is turned off on the UPS being shut
down.
Logic power remains on.
WARNING
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
5. Open the UPS input feeder circuit breaker for the UPS being shut down.
6. If the UPS is dual-feed, open the bypass feeder circuit breaker for the UPS being shut down.
7. If the UPS is EBC capable, open the UPS battery breaker.
8. If EBCs are installed, open all battery breakers
The UPS is now completely shut down.
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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 the UPS is dual-feed, close the bypass feeder circuit breaker for the UPS being restarted.
4. Close the input breaker.
5. If the UPS is EBC capable, close the UPS battery breaker.
6. If EBCs are installed, close the battery breakers.
7. On the UPS being restarted, observe the UPS control panel display becoming active, indicating logic
power.
8. Verify no alarms are active on the UPS being restarted.
UPS Operating Instructions
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