Install Guide

Figure 5. DC power connector and wiring block
1. Wiring block
2. Power connector
3. PSU connector
1. Strip a one-half inch section of insulation from each of the power connector wires, as shown.
2. Insert each of the bare wire power connector lengths into the wiring block. The blue wire is -48 V, the black wire is the
positive return, and the yellow/green wire is the ground wire, as shown.
3. Use a flat-head screwdriver to tighten the screws that secures the bare wires into the wiring block.
4. Secure the 550W DC power source wires to the other side of the wiring block, see steps 1 and 3.
NOTE: Do not cross the wires.
5. Insert the 550W DC power connector into the power socket of the 550W DC PSU. Ensure that the connector pins firmly
seat and you hear the click of the left and right levered power connector clamps lock into place.
NOTE: Never try to force the power connector into or out of the 550W DC PSU power socket.
6. Secure the 550W DC power cable to the 550W DC power connector using the attached thumbscrews.
To uninstall the power connector from a 550W DC PSU, unscrew the thumbscrews, unplug the 550W DC power cable, and pull
the 550W DC power connector from the 550W DC PSU socket.
1300W DC power connections
Each 1300W DC PSU comes with one 1300W DC cable. The cable ships in a separate plastic bag.
CAUTION:
This product must be supplied by a 1300W DC power source rated -48 Vdc to -60 Vdc, 40 A minimum,
and Tma = 45-degree C minimum. The altitude of operation is 5000 m. The product must be supplied by a
UL-Listed DC power source that is separated from AC mains by double or reinforced insulation when the switch
is connected to 1300W DC power. For more information, contact your Dell sales representative.
60 Power supply