Eaton 93PM UPS 480V Three-Wire – 100 kW Frame Installation and Operation Manual 164000227—Rev 07 67
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A latching-type Remote Emergency Power-off (REPO) switch can be used in an emergency to shut down the
UPS and remove power to the critical load from a location away from where the UPS is installed. Figure 34
shows a REPO switch.
NOTE 1 Before installing a REPO switch, verify that the UPS was installed according to the
instructions in paragraphs 4.2 Unloading the UPS Cabinet from the Pallet through
4.10 Battery Power Wiring.
NOTE 2 When installing the REPO switch, you must install conduit between the device and the
UPS cabinet for wiring the switch.
NOTE 3 The REPO switch must be a Normally-open or Normally-closed latching-type switch not
tied into any other circuits.
NOTE 4 This procedure is intended for installing the Eaton-supplied REPO switch. If installing
another manufacturer's switch, use this procedure, Figure 36 and Figure 37 as a guide.
NOTE 5 The REPO switch wiring must be in accordance with NEC Article 725 Class 2
requirements.
NOTE 6 Disconnect terminal block plugs from terminal blocks to wire plugs.
To Install a REPO switch:
1. Verify the UPS system is turned off and all power sources are removed. See
Chapter 7 UPS Operating Instructions, for shutdown instructions.
2. Securely mount the REPO switch. Recommended locations include operator's consoles or near exit doors.
See Figure 10 for enclosure dimensions and wiring knockouts.
3. If not already opened, open the front door by lifting the latch from the bottom and turning to the right
(counterclockwise) and swing the door open.
4. If wiring the REPO terminals from the bottom of the UPS, proceed to Step 9; otherwise, proceed to Step
5.
5. Remove the top interface entry conduit landing plate to drill or punch holes (see Figure 17).
6. Reinstall the interface entry plate and install the conduit.
7. Route the REPO wiring through the top interface entry conduit landing plate to the REPO terminals. See
Figure 22 and Figure 23 for UPS interface terminal locations.
8. Proceed to Step 14.
9. Remove the bottom interface entry conduit landing plate to drill or punch holes (see Figure 24).
10. Reinstall the interface entry plate and install the conduit.
UPS System Installation
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