Eaton 9355 - Page 34

Electrical Installation
26 Eaton 9355 UPS (20/30kVA) Installation and Operation Manual 164201626—Rev F www.eaton.com/powerquality
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 connections insulator.
13. Reinstall the UPS wiring access cover.
14. Reinstall the UPS conduit landing box in the reversed position (see Figure 14 on page 24).
15. Replace the UPS front door (see page 10).
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