Eaton 93E UPS 15-80 kVA (380/400/415 V) Installation and Operation Manual
© Eaton Corporation plc 2015. All rights reserved. Revision: 001
Document ID: 614-01975-00
99 (133)
7.3 Single UPS operation
NOTE: Note switch operation nomenclature:
Open = O = Off
Closed = I = On.
Refer to the External Battery Cabinet Installation Manual for the EBC
battery breaker location.
7.3.1 Starting the UPS in the bypass mode
If the inverter output of the UPS is not available and the critical load
needs to be energized, start the UPS in the bypass mode.
CAUTION
In the bypass mode, the critical load is not protected from commercial
power anomalies.
To start the UPS system:
1. To unfasten the front door, lift the latch from the bottom, turn it to
the right (counter-clockwise) and swing the door open (see Figure
35).
2. Make sure that the bypass switch is open and the neutral switch is
closed.
3. Close the UPS input feeder circuit breaker.
4. If the UPSs are wired for dual input, close the UPS bypass input
feeder circuit breaker.
5. Make sure that the rectifier input switch is closed.
6. Make sure that the bypass input switch is closed.
7. Make sure that the output switch is closed.
8. Make sure that the MBS cover is installed.
9. Close the door and secure the latch.
10. Close the external battery breakers.
11. Wait until the UPS control panel display becomes active and
indicates logic power.
12. Check that there are no alarms active.
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