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Installing the UPS System
3-7
EATON Powerware
®
9390 UPS (100–160 kVA) Installation and Operation Manual S 164201604 Rev B powerware.com
CAUTION
DELTA SOURCES (TN-S) - The 9390 UPS system can be operated only from a delta supply
source that is fully floating and if the neutral-forming transformer kit (PN 103005400) is
installed in the UPS. The UPS cannot be operated from a mid-point or end-point grounded
delta supply source. With this type of supply source, there is no capability to provide an output
neutral. In no circumstances shall a neutral to ground bonding jumper be installed in the
UPS.
Use the applicable procedure from the following list for the UPS model being installed:
Ī For UPS models 120/100, 120/120, 160/100, 160/120, and 160/160 with 208V/220V input
and UPS models 160/100, 160/120, and 160/160 with 480V input, proceed to
paragraph 3.2.6.1.
Ī For UPS models 120/100 and 120/120 with 480V input, proceed to paragraph 3.2.6.2.
3.2.6.1 External Wiring Installation Procedure A
To 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.
3. Remove the screws securing the bottom internal safety shield panel and remove
the panel to gain access to the input, output, and battery terminals. Retain the
hardware 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 panels
and remove the panels to gain access to the top wiring entry. Retain the hardware
for later use.
6. Route the input and output cables to the UPS terminal blocks. See Drawing
164201604-7 starting on page A-29 for wiring access information and terminal
locations.
7. If wiring a single-feed system, proceed to Step 8; if wiring a dual-feed system,
proceed to Step 10.
8. Connect phase A, B, C, and Neutral (if required) input power wiring from the
utility source to the rectifier input terminals and neutral terminals in the UPS
cabinet. See Appendix A for wiring and termination requirements and wiring
access information. Note wiring connections for single-feed systems.
9. Proceed to Step 13.