7-16
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Connecting Power for DC Systems
Figure7-12 DC Cabling for Three-Shelf and Four-Shelf Racks
Main cooling
module
Plenum or spacer
Booster cooling unit
AXIS shelf
AXIS shelf
DC source
(primary)
DC source
(optional
secondary)
Power to cooling
module
AXIS shelf
Main cooling
module
Plenum or spacer
Booster cooling unit
AXIS shelf
AXIS shelf
DC source
(primary)
DC source
(optional
secondary)
Power to cooling
module
AXIS shelf
AXIS shelf
P2 P2
P2
P2
P1
P3
2B 2A
P1
3B 3A P3
2B 2A
P1
3B 3A
P1
1B 1A
P1
1B 1A
P3
P3
4B 4A
P3
2B 2A
H8285
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf