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1. Follow the normal start position:
Figure 42. Maintenance bypass mode
A
Bypass input
B
Rectifier input
C
UPS output
2. Close the incoming feeder to connect the power to rectifier input terminals (X1).
3. Turn on the battery breakers feeding the battery terminals X4.
4. Turn on the bypass input switch (BIS) S1. This connects the feed to the bypass input.
5. Start the UPS system in the bypass mode:
a. Make sure the UPS input and bypass (if dual feed) feeder circuit breakers are ON position.
b. In the home screen, select Controls→System controls→Go to bypass.
6. Verify that there are no active alarms, and the UPS is on bypass mode.
7. Turn off the maintenance bypass switch (MBS) S2. This disconnects the feed from bypass input to the
UPS output. The load is now supported by the static bypass.
8. Close the UPS door.
9. Do the transfer from the bypass mode to the double conversion mode:
a. In the home screen, press Controls.
b. Select UPS controls (Single UPS) or System controls (UPS system).
c. Press Go online button. Confirm your selection.
The UPS is now in the double conversion mode.
EATON 93PM G2 UPS
USER'S AND INSTALLATION GUIDE
1
Bypass input switch (BIS) S1
2
Maintenance bypass switch (MBS) S2
P-164000956 - February 2021
www.eaton.eu
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