Connect DC Power Cables to an 750 W DC
Power Supply
The DC power connection at your facility must be made by a qualified electrician.
![Warning](./images/Warning_Note.png)
Warning
Always make sure that the DC circuit is de-energized before connecting or
disconnecting the DC power cables on the 750 W DC power supply.
![Caution](./images/Caution_Note.png)
Caution
Provide proper
connection and strain relief on the DC power cables in accordance with all local and
national electrical codes.
To connect the DC power cables to the 750 W DC power supply, follow these steps:
- Verify that the DC circuit
is de-energized.
- Attach an
ESD-preventive wrist strap to your bare wrist and connect the metal end to an
appropriate ground point on the rack.
-
Verify that the ground wire is
attached to the power supply.
-
Insert a screwdriver into both
slots on the top of the terminal connector and loosen the screws enough to
accommodate a stripped power input cable.
-
Insert the DC power cables into
the connector.
-
Slide the end of the positive wire
(–48 V RTN) into the positive terminal (labeled +, on the left
side of the connector).
-
Tighten the screw on the
top of the positive terminal connector to between 4.4 in‑lb (0.50 N m)
and 7.1 in‑lb (0.8 N m).
Inserting the
DC Power Cables into the Connector
-
Slide the end of the negative wire
(–48 V) into the negative terminal (labeled –, on the right
side of the connector).
-
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).
-
Insert the connector into the
slot on the power supply.
Inserting the
Connector into the Power Supply
- Connect the cables to the
DC source voltage, using hardware appropriate to the installation site and following
local and national electrical codes.
- Energize the DC circuit.