Eaton Power Xpert 9395P 250 kVA, User And Installation Manual

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39 9395P 250 kVA / 275 kVA / 300 kVA
User’s and Installation Guide
4.7 Installing interface connections
WARNING
Hazardous voltages are present near the user interface terminal area if the UPS is not totally
disconnected.
4.7.1 TB1, TB2, and TB3 connections (other than TB1 battery interface
connections)
NOTE
• When installing interface wiring for TB1, TB2, and TB3 connections, conduit must be
installed between each device and the UPS cabinet.
• Interface wiring must be installed from the top of the UPS cabinet.
To install wiring to connections:
1. Verify the UPS system is turned off and all power sources are removed. See Chapter 7, “UPS
Operating Instructions,” for shutdown instructions.
2.
Unfasten the front door latch and swing the door open (see Figure 4
-
2).
3.
Remove the door. Remove the retaining screw located inside the door at the bottom hinge pivot
point, then lift the door off. Retain the hardware for later use.
4. If installing interface wiring through the left interface entry conduit landing, proceed to Step 5;
otherwise, proceed to Step 7.
5. If not already accomplished, remove one top screw and two bottom screws securing the UPS left
front panel (see Figure 4 - 2). Lift the panel straight up to remove it from the panel hanger bracket
at the top of the cabinet.
6. Remove the screws securing the internal safety shield panel and remove the panel. Retain the
hardware for later use.
7. Terminal block TB3 is accessible on the left side of the X-Slot communication bay. To gain access
to terminal blocks TB1 and TB2 and the interface entry conduit landing plates, loosen the screws
securing the small top internal safety shield panel and remove the panel. This panel is to the right
of the X-Slot communication bay (see Figure 4
-
13).
8. Remove the UPS cabinet top interface entry conduit landing plates to drill or punch holes (see
Figure 4
- 4).
9. Reinstall the interface entry plates and install the conduit.
WARNING
Do not directly connect relay contacts to the mains related circuits. Reinforced insulation to the
mains is required.