H3C Technologies H3C S10500 Series Switches - Manual (Page 77)

67
Heat dissipation
Heat dissipation is measured in BTU/h, and 1 W equals 3.4121BTU/h.
The heat dissipation of a switch depends on its 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
90%. Heat dissipation/hour of the switch is 0.9 × (total power consumption of the cards plus power
consumption of the fan tray)/0.9 × 3.4121.
Table 19 shows the heat dissipation for each switch model.
Table 19 Heat dissipation
Model Heat dissipation (BTU/h)
S10504 5732
S10506 6957
S10508 9943
S10508-V 10267
S10510 11489
S10512 15369
For the power consumption of the cards and fan trays of the H3C S10500 Switch Series, see " Module
power consumption and system power consumption ."
Environmental specifications
Table 20 Environmental specifications
Description Operating Non-operating
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)
Noise
The switch uses fan trays that can adjust the fan speed automatically based on the device temperature.
The sound pressure levels vary by fan speed. For more information, see Table 21 .
Table 21 Sound pressure levels
Model
Sound pressure level in the
acceptable temperature range
Sound pressure level when the
fan tray operates at full speed
S10504 62.3 dBA 75.5 dBA
S10506 66.9 dBA 74.4 dBA
S10508 63 dBA 75.8 dBA
S10508-V 61.6 dBA 72.6 dBA