Cisco MDS 9148V-K9 - Component Power Requirements and Heat Dissipation; Power Supply Requirement Specifications

Power Supply Requirement Specifications
The following table provides a sample calculation of power for the switch AC power supply:
Table 5: Power Dissipation for AC Power Supply
Power at
220 V/50
Hz
(Watts)
Power at
110 V/60
Hz
(Watts)
Fan
Trays
Optics
Number
Optics
Speed
VoltageTemperatureTraffic
Rate
PSUPower
Mode
20521142432G-SWNominal25°C50%2Typical
240247448
228
23542464G-SW
286295448
20721342432G-SW
25°C100%2Max
24124844832G-SW
22923642464G-SW
29230144864G-SW
278
28644832G-SW40°C
31432344864G-SW
Table 6: Power Supply Fuse Information
Fuse Melting TimeI2t (Amps
2
seconds)Fuse Rating (Amp)Fuse TypePID
4 min@15 A
2 min@30 A
53415Time-lagDS-CAC-500W-I
30 min@22.5 A
0.15 s@50 A
660DS-CAC-500W-E
Component Power Requirements and Heat Dissipation
Consider heat dissipation when sizing the air-conditioning requirements for an installation. The power and
heat associated with switch varies based on the following considerations:
• The environment (temperature) outside the chassis
• Internal chassis temperature
• Any hardware component failure in the chassis
• Average switching traffic levels
Cisco MDS 9148V-K9 Switch Hardware Installation Guide
47
Technical Specifications
Power Supply Requirement Specifications