Preparing for Installa tion 2-3
AC and DC Power
Figure2-2 DC Power Planning
If DC power will be used, to provide full redundancy the Cisco AS5800 requires two DC power
circuits providing up to 54A at -48VDC for theCisco5814 dial shelf and its components, and two
additional 40A -48VDC circuits for the router shelf (or shelves , if a split dial she lf config uration will
be used) and the Cisco 3640 system controller (if used). See Figure2-2.
Cisco5814 Dial Shelf
The Cisco5814 dial shelf can be ordered with DC-input power supplies only, or wit h t he ad dition of
an optional AC-input power shelf.
•The DC-input power supplies allow the access server to operate at –48VDC nominal in North
America and –60VDC in Europe.
•The AC-input power supplies operate between 200 and 240 VAC input voltage and supply –48
VDC power to the dial shelf DC power-entry modules.
Note The color coding of the DC-input power supply leads depends on the color coding of th e DC
power source at your site. Typ ically, green or green/yellow is used for groun d, black is used for +48V
Return, and red or white is used for -48V. Make certain that the lead co lor codi ng y ou choos e for t he
DC-input power supply matches lead color-coding used at the DC power source.
For detailed system and cabling specification tables, refer to AppendixA, “Cisco AS5800
Specifications.”
Optional components
Cisco 3640 SC
Circuit 1
-48 VDC 40A
Circuit 3
-48 VDC 50A
Circuit 4
-48 VDC 50A
Circuit 2
-48 VDC 40A
Core components
29096
Cisco DPS 200
Cisco 7206 router shelf
Cisco 7206 router shelf
Cisco 5814 dial shelf
8-13A
8-13A
8-13A
8-13A
8-13A
8-13A