Installing the UPS System3-9EATON Powerware® 9390 UPS (100–160 kVA) Installation and Operation Manual S 164201554 Rev E powerware.com3.2.6.2 480V Input External Wiring InstallationTo install wiring to connections:1. Slide the air filters up and remove them from the cabinet.2. Remove the screws securing the control panel door and swing the door open.Retain the hardware for later use.3. Remove the screws securing the bottom internal safety shield panel and removethe panel to gain access to the input, output, and battery terminals. Retain thehardware for later use.4. If installing power wiring from the top of the cabinet, proceed to Step 5;otherwise, proceed to Step 6.5. Remove the screws securing the top and right side internal safety shield panelsand remove the panels to gain access to the top wiring entry. Retain the hardwarefor later use.6. Route the input and output cables to the UPS terminal blocks. See Drawing164201554-7 starting on page A-29 for wiring access information and terminallocations.7. If wiring a single-feed system, proceed to Step 9; if wiring a dual-feed system,proceed to Step 11.8. Connect phase A, B, C, and Neutral (if required) input power wiring from theutility source to the bypass input terminals and neutral terminals in the UPScabinet. See Appendix A for wiring and termination requirements and wiringaccess information. Note the wiring connections for single-feed systems.9. Proceed to Step 13.10. Disconnect the single-feed jumper bus from the phase A, B, and C terminals onthe rectifier input terminals and bypass input terminals. Remove the jumpers fromthe cabinet.11. Connect phase A, B, and C rectifier input power wiring from the utility source tothe rectifier input terminals in the UPS cabinet. See Appendix A for wiring andtermination requirements and wiring access information. Note the wiringconnections for dual-feed systems.12. Connect phase A, B, and C, and Neutral (if required) bypass input power wiringfrom the utility source to the bypass input terminals and neutral terminals in theUPS cabinet. See Appendix A for wiring and termination requirements and wiringaccess information. Note the wiring connections for dual-feed systems.13. If wiring an IDC or IAC, proceed to Step 15; otherwise, proceed to Step 18.
