14
The maximum system power consumption of the switch is 2 × 50 + 2 × 465 + 6 × 240 + 2 × 793 =
4056 W.
Heat dissipation
Heat dissipation is measured in BTU/h, and 1 W equals 3.4121 BTU/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.
For the power consumption of the cards and fan trays of the H3C S12500X-AF switches, see
"
Module power consumption and system power consumption
."
Environmental specifications
Table 11 Environmental specifications
Description
Operating
Non-operating
Temperature
0°C to 40°C (32°F to 104°F)
–40°C to +70°C (–40°F to +158°F)
Relative humidity
(noncondensing)
5% to 95%
5% to 95%
Noise
The switch uses fan trays that can automatically adjust the fan speed based on the device
temperature The sound pressure levels vary by fan speed. For more information, see
Table 12 Sound pressure levels
Switch model
Fan tray model
Sound pressure level
in the acceptable
temperature range
Sound pressure level
when the fan tray
operates at full speed
S12516X-AF (with
two fan trays)
LSXM116XFAN
67.8 dBA
91.2 dBA
LSXM116XFANH
73.9 dBA
97.4 dBA
S12512X-AF (with
two fan trays)
LSXM112XFAN
60.8 dBA
83.2 dBA
LSXM112XFANH
70.8 dBA
93.0 dBA
S12508X-AF (with
two fan trays)
LSXM108XFAN
62.1 dBA
87.6 dBA
LSXM108XFANH
71.5 dBA
95.4 dBA
S12504X-AF (with
two fan trays)
LSXM104XFAN
67.5 dBA
85.3 dBA
LSXM104XFANH
69.2 dBA
87.0 dBA
S12502X-AF (with
two fan trays)
LSXM102XFAN
62.4 dBA
83.7 dBA
LSXM102XFANH
73.1 dBA
87.2 dBA
S12501X-AF (with
three fan trays)
FAN-80B-1-A
66.0 dBA
82.4 dBA
