Noise - H3C S7500E Series Installation Manual

Noise

The S7500E series switches adopt different types of fan trays. The S7503E-S adopts fans with a fixed
speed (the fan speed does not change with the heat dissipation volume), so the sound pressure level of
the switch is fixed. The other models adopt fans with the automatic speed adjustment function, so the
sound pressure levels are different when the fan speeds are different. For more information, see
Table 36 S7500E sound pressure levels
Model
S7502E
S7503E-S
S7503E
S7506E-S
S7506E
S7510E
S7506E-V
Sound pressure level when
the fan tray operates at low
speed
49.8 dBA
—
51.6 dBA
53.6 dBA
53.6 dBA
53.5 dBA
52.1 dBA
Sound pressure level when
the fan tray operates at
middle speed
51.6 dBA
—
54.6 dBA
56.2 dBA
56.2 dBA
55.8 dBA
55.1 dBA
112
Table
Sound pressure level
when the fan tray
operates at full speed
56.7 dBA
56.7 dBA
56.1 dBA
57.7 dBA
57.7 dBA
56.7 dBA
56.2 dBA
36.