Instruction manual

ELECTRICAL INSTALLATION
Eaton 9355 UPS (20/30 kVA) Installation and Operation Manual S 164201626 Rev C www.eaton.com/powerquality
27
Red Wires
(open when breaker is open)
Black Wires
(common)
Blue Wires
(closed when breaker is open)
350A Breaker
Auxiliary Contacts
From UPS 4 Output
From UPS 3 Output
From UPS 2 Output
Bypass Input
From UPS 1 Output
350A
110A (4X)
LOAD
MIS
350A
Figure 16. Parallel Wiring Diagram – Version 2 with MIS
9. Wire the AC input to the bypass breaker on the Tie Cabinet (see Figure 17 for
Version 1 or Figure 18 for Version 2).
10. Verify the phase rotation for each UPS and the bypass input.
11. Reinstall any covers removed from the Tie Cabinet.
12. Reinstall the UPS wiring access cover.
13. Reinstall the UPS conduit landing box in the reversed position (see Figure 14 on
page 25).
14. Replace the UPS front door (see page 10).