Dc Power Supply Considerations - Alcatel-Lucent OmniSwitch 6850E Series Hardware User's Manual

OmniSwitch 6850E Series Power Supplies
You can also attach the power supplies to the back of a chassis directly as well as using cables at the same
time, as shown in the diagram below.

DC Power Supply Considerations

In addition to the installation steps described in
page 3-9 and "Connecting a Power Supply with a Cable" on page 3-10
120W-DC) have the following additional considerations:
• Connect to a -48V or -60V reliably grounded DC SELV source.
• Use common DC return connections for the DC power supplies. The DC return terminal conductor
should be connected to the equipment frame.
• The Branch Circuit Overcurrent Protection must be rated a Maximum of 15A.
• Use 12AWG solid conductors only.
• A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the
field wiring.
Black
MIN 1 TURN PER 1.5
HALF TURN PER .75
Red
Note. Refer to the wiring diagram for information on connecting the DC power supply to a DC power
source.
page 3-14
Redundant Large Power Supplies
Twisted pair wire (red and black) for a DC power supply
OmniSwitch 6850E Series Hardware Users Guide
OmniSwitch 6850E Series Power Supplies
1 7 . 6
i n c h e
s
"Connecting a Power Supply Directly to the Chassis" on
DC power supplies (e.g., the PS-
January 2013