Eaton Power Xpert 9395 550/275, Installation And Operation Manual

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UPS System Installation
Power Xpert
TM
9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716—Rev 8 www.eaton.com/powerquality 4-25
6. If not already accomplished, remove one top screw and two bottom screws securing the UPS left front
panel (see Figure 4-2). Lift the panel straight up to remove it from the panel hanger bracket at the top of
the cabinet.
7. Remove the screws securing the internal safety shield panel and remove the panel. Retain the hardware
for later use.
8. To gain access to terminal blocks TB1 and TB2 and the interface entry conduit landing plates, loosen the
screws securing the small top internal safety shield panel and remove the panel. This panel is to the right
of the X-Slot communication bays (see Figure 4-12).
9. Remove the UPS cabinet interface entry conduit landing plates to drill or punch holes (see Figure 4-4).
10. Reinstall the interface entry plates and install conduit.
11. To locate the appropriate terminals and review the wiring and termination requirements, see
paragraph 3.2.3, Table 4-1, and Figure 4-12 through Figure 4-15.
12. Route and connect the wiring as shown in Table 4-2 and Figure 4-20.
13. If the normally-closed REPO TB1 connection in the UPS is not used, connect a jumper wire between
pins 1 and 2 on TB1.
14. If you are installing multiple REPO switches, wire additional switches in parallel with the first REPO.
Figure 4-20. Normally-Open REPO Switch Wiring
15. 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 4-19). The REPO switch
wiring must be in accordance with NEC Article 725 Class 2 requirements.
Table 4-2. REPO Wire Terminations
From REPO Station(s)
Switch Contact Block
(Either Block)
To Customer Interface
Terminal Board TB1 in UPS
Cabinet Wire Size Tightening Torque
3 NO TB1

3 Twisted Wires (2)
14

22 AWG
(0.75

4.0 mm 2 )
7 lb in
(0.8 Nm)
4 NO TB1

4
3 (NO)
UPS TB1
REPO
Switch
(NO)
Twisted
Wires
1 (NC)
NOTE REPO switch rating is 24 Vdc, 1A minimum.
NOTE T he 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.
2 (Return)
4 (Return)
3
4