Powerware Powerware 9355 manual Parallel Wiring Diagram

TIE CABINET INSTALLATION

22.Wire the maintenance bypass auxiliary contacts and terminate to the maintenance bypass wires in the Tie Cabinet (see Figure 6 on page 12).

Connect the black and the red wire to TB4 on the UPS (see Figure 9). Cap the blue wire.

NOTE The maintenance bypass contacts are normally-open. To ensure proper bypass operation, DO NOT use the blue wire (it is normally-closed).

NOTE There are two sets of maintenance bypass wires; you can terminate to either set. If you are installing four UPSs, it is recommended to terminate two UPSs to one set of wires and two UPSs to the other set of wires.

	Red Wires
	(open when breaker is open)
350A Breaker	Black Wires
	(common)
Auxiliary Contacts
	Blue Wires
350A	(closed when breaker is open)

Bypass Input
110A (4X)	LOAD
From UPS 1 Output
From UPS 2 Output
From UPS 3 Output
From UPS 4 Output

Figure 9. Parallel Wiring Diagram

23.Reinstall the UPS wiring access cover.

24.Reinstall the UPS conduit landing box in the reversed position.

EATON Powerware® 9355 Tie Cabinet (20/30 kVA) Installation Guide S 164201630 Rev A www.powerware.com 15