111
Fan tray power consumption
Table 34 Fan tray power consumption
Model
Minimum fan tray power
consumption
Maximum fan tray power
consumption
S7502E 7.5 W 14.5 W
S7503E-S 14.5 W 14.5 W
S7503E 15.5 W 27.5 W
S7506E-S 24.5 W 42.5 W
S7506E 24.5 W 42.5 W
S7510E 28 W 48.5 W
S7506E-V 30 W 45.5 W
Heat dissipation
The heat dissipation of the switch depends on power consumption. To calculate heat dissipation of the
switch, assume 90% power consumption is converted to heat, and the efficiency of the power module is
80%. Heat dissipation/hour of the switch is 0.9 × (total power consumption of the cards plus power
consumption of the fan tray)/0.8 × 3.4121.
NOTE:
• For the power consumption of the cards and fan trays of the S7500E series switches, see “Module
pow
er consumption and total power consumption.”
• Heat dissipation is measured in the unit of BTU/h. 1 W = 3.4121BTU/h.
Environmental specifications
Table 35 Environmental specifications for the S7500E series
Description Operating Nonoperating
Temperature 0°C to 45°C (32°F to 113°F) –40°C to +70°C (–40°F to +158°F)
Relative humidity 10% to 95% (non-condensing) 5% to 95% (non-condensing)
Altitude
–60 m to +4 km (–196.85 ft to +2.49
miles)
When the altitude is 4 km, the highest
operating temperature is 31.8°C
(89.24°F). The maximum operating
temperature increases 0.33°C
(0.59°F)/100 m (328.08 ft) upwards
until 45°C (113°F) is reached.
–60 m to +4.5 km (–196.85 ft to +2.80
miles)
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