Power Supply Requirements And Heat Dissipation Specifications - Cisco MDS9120 - MDS 9120 Multilayer Fabric Switch Installation Manual

Power Specifications
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Table B-3
AC Input Power Supply
Power supply output capacity
Power supply output voltage
Output holdup time
Table B-4
Table B-4
DC Input Power Supply
DC input voltage
DC input current rating
(maximum)
Power supply output capacity
Power supply output voltage
Output holdup time

Power Supply Requirements and Heat Dissipation Specifications

Table B-5
AC input power supply.
Table B-5
Model Number/Module
Cisco MDS 9148
Switch (with fan
modules)
Cisco MDS 9134
Switch (with fan
modules)
Cisco MDS 9124
Switch (with fan
modules)
Cisco MDS 9100 Series Hardware Installation Guide
B-4
Cisco MDS 9100 Series AC Input Power Supply Specifications
Specification
300 W
12 V +/- 6% up to 25 A
20ms when input > 100 VAC
lists the specifications for the Cisco MDS 9100 Series DC input power supply.
Cisco MDS 9100 Series DC Input Power Supply Specifications
Specification
-48 VDC to -60 VDC continuous
8 A at -48 VDC
6.67 A at -60 VDC.
Note
300 W
12 V +/- 6% up to 25 A
8 ms when input > 100 VAC
provides a sample calculation of power and heat dissipation for the Cisco MDS 9100 Series
Power and Heat Dissipation for AC Input Power Supply
AC Input
Power (watts)
120 maximum 410
96 maximum
80 maximum
DC power supply does not use country
specific power cords. For more
information on DC power supply see
Removing and Installing DC Power
Supplies section in Installing the Cisco
MDS 9100 Series chapter.
Heat Diss. 85 VAC
(BTU/hr) (amps)
1.76
330 1.41
330 1.41
Appendix B Technical Specifications
Input Current
110 VAC 220 VAC
(amps) (amps)
1.36 0.68
1.10 .55
.73 .36
OL-21514-01