Version 5.2
Sourcefire 3D System User Guide
247
Power Requirements for Sourcefire Devices
3D8120/8130/8140 and 3D8250/8260/8270/8290
Appendix A
AWG, UL-recognized cords with NEMA 515P plug. Contact the factory about
other power cords.
DC Installation
Separate circuits are required to create redundant power sources. Use an
uninterruptible or battery-backed power source to prevent power status issues or
power loss due to input line power glitches.
WARNING!
Do
not
connect AC power to DC supplies.
Supply sufficient power to each power supply to run the entire appliance. The
voltage and current ratings for each supply are listed on the label on the
appliance.
Use an external Surge Protection Device at the input of the network equipment
where the Sourcefire 3D System is to be installed.
Separate Circuit Installation
If separate circuits are used, each circuit must be rated to the full rating of the
appliance. This configuration provides for circuit failure and power supply failure.
Example:
Each supply is attached to a different –48VDC circuit. Each circuit must
be capable of supplying 20A, as stated on the label.
Same Circuit Installation
If the same circuit is used to feed both supplies, then the power rating of one
supply applies to the whole box. This configuration only provides protection from
a power supply failure.
Example:
Both supplies are attached to the same –48VDC circuit. The maximum
draw from this circuit would be 20A, as stated on the label.
WARNING!
Use of this optimization requires that the power cords are rated for
the full rating for each supply.
DC Voltage
The power supplies will work with these voltages:
•
-48VDC nominal referenced to RTN.
•
-40VDC to -72VDC maximum
Use of voltages outside this range may cause damage to the appliance.
