H3C Technologies H3C S7500E Series Switches - Manual (Page 93)

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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 21 shows the heat dissipation for each switch model.
Table 21 Heat dissipation
Model Heat dissipation (BTU/h)
S7502E 1024
S7503E-S 1190
S7503E 1870
S7506E-S 2560
S7506E 3200
S7506E (non-PoE) 2900
S7506E-V 3200
S7510E 4900
For the power consumption of the cards and fan trays of the S7500E series switches, see " Module power
consumption ."
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 22 .
Table 22 Sound pressure levels
Model
Sound pressure level when
the fan tray operates at low
speed
Sound pressure level when
the fan tray operates at
middle speed
Sound pressure level
when the fan tray
operates at full speed
S7502E 49.8 dBA 51.6 dBA 56.7 dBA
S7503E-S N/A N/A 56.7 dBA
S7503E 51.6 dBA 54.6 dBA 56.1 dBA
S7506E-S 53.6 dBA 56.2 dBA 57.7 dBA
S7506E 53.6 dBA 56.2 dBA 57.7 dBA
S7506E
(non-PoE)
53.6 dBA 56.2 dBA 57.7 dBA
S7506E-V 52.1 dBA 55.1 dBA 56.2 dBA
S7510E 53.5 dBA 55.8 dBA 56.7 dBA