Environmental Specifications; Noise - HP 7500 Series Installation Manual

80%. Thermal output/hour of the switch is 0.9 × (total power consumption of the cards plus power
consumption of the fan assembly)/0.8 × 3.4121.
NOTE:
For the power consumption of the cards and fan assemblies of the 7500 Switch Series, see
•
power consumption and total power
Thermal output is measured in the unit of BTU/h. 1 W = 3.4121BTU/h.
•

Environmental specifications

Table 41 Environmental specifications for the 7500 Switch Series
Description
Temperature
Relative humidity

Noise

The 7500 Switch Series adopts different types of fan assemblies. The 7503-S adopts fans with a fixed
speed (the fan speed does not change with the thermal output), 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 42 7500 sound pressure levels
Model
7502
7503-S
7503
7506
7510
7506-V
Operating
0°C to 45°C (32°F to 113°F)
10% to 95% (non-condensing)
Sound pressure level when
the fan assembly operates
at low speed
49.8 dBA
N/A
51.6 dBA
53.6 dBA
53.5 dBA
52.1 dBA
consumption."
Sound pressure level when
the fan assembly operates
at middle speed
51.6 dBA
N/A
54.6 dBA
56.2 dBA
55.8 dBA
55.1 dBA
101
Nonoperating
–40°C to +70°C (–40°F to +158°F)
5% to 95% (non-condensing)
Sound pressure level
when the fan assembly
operates at full speed
56.7 dBA
56.7 dBA
56.1 dBA
57.7 dBA
56.7 dBA
56.2 dBA
"Module
Table 42.