Eaton 9390 Installation And Operation Manual page 26

Installing the IDC
3.3.1.1
Note: The IDC is shipped with a debris shield covering the ventilation grill on top of the unit. Do not remove
the debris shield until installation is complete. However, remove the shield before operating the IDC.
Once the debris shield is removed, do not place objects on the ventilation grill.
Note: Remove the IDC top or bottom conduit landing plate to drill or punch conduit holes, or remove
knockouts (see Drawing 164201690-6 on page 9-19).
Note: Refer to the Eaton 9390 UPS (40–80 kVA) Installation and Operation Manual for UPS cabinet wiring
information, and conduit and terminal locations.
1. Verify that the UPS system is turned off and all power sources are removed. Refer to the Eaton 9390 UPS
(40–80 kVA) Installation and Operation Manual for shutdown instructions.
2. If not already open, unfasten the front door latch and swing the doors open.
3. If not already removed, remove the doors. Remove the retaining screws located inside each door at the
top and bottom hinge pivot points, then lift the door off. Save the retaining screws for reinstallation of the
doors.
4. If not already open, remove the screws securing the inside distribution panel doors, and swing the doors
open.
5. If not already removed, remove the screws securing the top internal safety shield, and remove the shield
to gain access to the terminals.
6. An IDC-to-UPS output wiring harness is supplied inside the IDC. Route this harness through the knockouts
in the side of the cabinets to the UPS output terminals. Refer to the Eaton 9390 UPS (40–80 kVA)
Installation and Operation Manual for UPS cabinet terminal locations and termination requirements. See
Drawing 164201690-7 , starting on page 9-21, for IDC wiring access information.
Note: A minimum of two separate feeds with upstream feeder breakers, or one feed with two upstream
feeder breakers, must be provided. One for the UPS and one for the IDC bypass input. DO NOT use
one feed or a single feeder breaker to supply both the UPS and IDC.
7 . Connect phase A, B, and C output power wiring to the output terminals in the UPS cabinet. Connect
Neutral for an IDC without a transformer. Refer to the Eaton 9390 UPS (40–80 kVA) Installation and
Operation Manual for UPS cabinet terminal locations.
8. If wiring an IDC with a distribution panel, continue to Step 9; if wiring an IDC with distribution breakers or
an output terminal block, proceed to Step 11.
9. Install customer-supplied branch circuit breakers (Cutler-Hammer Bolt-on Type BAB or QBHW) into the
distribution panel.
10. Wire branch circuits according to the branch circuit breaker manufacturer's ratings and instructions, and
national and local electrical codes (output is prewired to the panelboard).
11. Connect phase A, B, and C, and Neutral power wiring from output breakers or terminals and neutral
terminals to the critical load.
12. After wiring the UPS system to the facility power and critical load, be sure to ground the system according
to local and/or national electrical wiring codes.
13. If wiring interface connections, proceed to paragraph 3.3.1.2; otherwise, continue to Step 14.
14. When all wiring is complete, reinstall the safety shield.
15. Close the inside distribution panel doors and secure with the retained screws.
16. Reinstall the front doors.
17 . Close the front doors and secure the latch.
3-8 Eaton 9390 IDC (40–80 kVA) Installation and Operation Manual 164201690 Rev 3 www.eaton.com/powerquality
Installing IDC Line-up-and-Match Power Wiring