Chassis and Power Supplies
Power Supplies
OmniSwitch 7700/7800 Hardware Users Guide
April 2005
page 2-15
DC Power Supply Connection
In the current release, a 15-inch pre-assembled cable harness is shipped with each DC-to-DC power
supply. You can plug this cable harness directly into the DC power connector on the power supply. Refer
to the important information below before connecting a DC power supply.
Connecting the DC Cable Harness to the Chassis Power Supply
When plugging in the cable, insert the connector end of the cable harness into the power supply connector
until it clicks firmly into place. This is an indication that the connector is secure and properly seated.
Connecting the DC Cable Harness to the DC Power Source
The other end of the cable harness is bare. Users must assemble and connect this end to the DC power
source or to a cable coming from the power source. In addition to following the important guidelines listed
below, be sure to consult specifications for the DC power source more information.
•
Connect the power supply to a reliably grounded 48VDC SELV source.
•
The branch circuit overcurrent protection must be rated 30A.
•
Use 10AWG copper conductors.
•
A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the
field wiring.
•
The power supply shall be installed in a restricted access location.
•
The power supply shall used with an Anderson Power Products model 1460G1 cord connector body.
OmniSwitch 7700/7800 DC Power Supply Technical Specifications
Input Voltage
-48VDC to -60VDC
Ambient Temperature
0–70 degrees Celsius (operating)
-40–85 degrees Celsius (non-operating)
Humidity
5% to 90% Relative Humidity (Operating)
0% to 95% Relative Humidity (Storage)
Altitude
10,000 feet above sea level and 32 degrees Celsius ambient air
temperature maximum (operating)
50,000 feet above sea level (non-operating)
