UPS System Installation
Eaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality 4-7
9. Top Entry Wiring. Remove the top conduit plate (see Figure 4-5) from the top of the sidecar. Identify all
conduit requirements and mark their location. Drill and punch all conduit holes in the top conduit plate
prior to mounting on the sidecar. Install the conduit plate and install all conduit runs into the plate. Pull the
wiring through the conduit into the wiring area.
10. Route the input and output cables through the top of the UPS sidecar and the UPS inter-cabinet wiring
access pass-through to the UPS terminals. See Figure 4-5 and Figure 4-6 for wiring access information,
and Figure 4-7 for terminal locations.
11. Connect phase A, B, and C rectifier input power wiring from the utility source to the rectifier input
terminals. See paragraph 3.2.2 for wiring and termination requirements.
For a detailed view of the UPS terminal blocks, see Figure 4-8.
12. Connect phase A, B, and C bypass input power wiring from the utility source to the bypass input
terminals. See paragraph 3.2.2 for wiring and termination requirements.
For a detailed view of the UPS terminal blocks, see Figure 4-8.
13. If wiring an external parallel system, proceed to Step 14; otherwise, proceed to Step 16.
External parallel system wiring length should be in accordance with Figure 3-9, to ensure
approximately equal current sharing when in Bypass mode.
14. Connect phase A, B, and C power wiring from the output terminals of each UPS to the tie cabinet.
For a detailed view of the UPS terminal blocks, see Figure 4-8.
15. Proceed to Step 17.
16. Connect phase A, B, and C power wiring from output terminals to the critical load. See paragraph 3.2.2 for
wiring and termination requirements.
For a detailed view of the UPS terminal blocks, see Figure 4-8.
As a result of the connected loads high leakage current is possible. Connection to earth ground is
required for safety and proper product operation. Do not check UPS operation by any action that
includes removal of the earth (ground) connection with loads attached.
17. Ground the UPS according to local and/or national electrical wiring codes by routing and connecting the
ground wire to the input ground lug. See Figure 4-7 for UPS terminal locations.
For a detailed view of the UPS ground terminals, see Figure 4-8.
18. Proceed to paragraph 4.10.
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