Installation Guide

c. Slide the end of the negative wire (–48 V) into the negative terminal (labeled –, on the right side
of the connector).
d. Tighten the screw on the top of the negative terminal connector to between 4.4 in‑lb (0.50 N m)
and 7.1 in‑lb (0.8 N m).
6. Insert the connector into the slot on the power supply.
See Figure 435.
Figure 435: Inserting the Connector into the Power Supply
7. Connect the cables to the DC source voltage, using hardware appropriate to the installation site and
following local and national electrical codes.
8. Energize the DC circuit.
Removing an EPS-150DC Power Module from an EPS-T2 Tray
Warning
Always be sure that the DC circuit is de-energized before disconnecting any cables and
attempting to remove an EPS-150DC power module.
Warning
Removing the DC wiring harness from your facility's DC source voltage must be done by a
qualified, licensed electrician.
To disconnect and remove an EPS-150DC power module, follow these steps:
1. Attach an ESD-preventive strap to your bare wrist and connect the metal end to the an appropriate
ground point on the equipment rack.
2. De-energize the DC circuit.
3. At the rear of the unit, loosen the retainer nut on the DC power connector.
4. Unplug the DC connector from the DC power supply socket on the rear of the unit.
Power has now been disconnected from the unit.
Removing an EPS-150DC Power Module from an EPS-T2
Tray Replacing DC Power Supplies
498 Summit Family Hardware Installation Guide