Powerware 650825 kVA operation manual Twisted, Wires

UPS SYSTEM INSTALLATION

12.If required, install wiring from the REPO switch to the trip circuitry of the upstream protective devices. A second contact block is provided on the REPO switch for this function (see Figure 4-34). The REPO switch wiring must be in accordance with NEC Article 725 Class 2 requirements.

13.Reinstall the top internal safety shield panel and secure with the retained hardware.

14.Reinstall the front door removed in Step 4 and secure with the retained hardware.

15.Close the door and secure the latch.

Figure 4-36shows the wiring connections if the normally−closed REPO contacts are used and Figure 4-37shows alternative methods of connecting a REPO switch if using another manufacturer’s switch.

	1
REPO	Twisted
Switch
	Wires
(NC)
	2

NOTE REPO switch rating is 24 Vdc, 1A minimum.

1 (NC)

2(Return)

UPS TB1

3 (NO)

4 (Return)

NOTE The REPO switch must be a latching−type switch not tied to any other circuits. NOTE REPO normally−open and normally−closed return terminals are separated on the terminal board but are electrically in common.

Figure 4-36. Normally-Closed REPO Switch Wiring

EATON Powerware® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com 4−41