H3C S5500-EI Series User Manual

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H3C S5500-EI Series Ethernet Switches
Chapter 2 Installation
Preparations
2-3
adsorption is more likely to happen. This can not only shorten the
service life of your device but also cause communications failures.
The following table lists the dust concentration limit.
Table 2-1 Dust concentration limit in the equipment room
Substance Concentration limit (particles//m³)
Dust
≤ 3 x 10
4
(no visible dust on the tabletop over
three days)
Note: The dust diameter is greater than or equal to 5 μm.
Besides dust, there are rigorous limits on the content of harmful
substances in the air that can accelerate the corrosion and aging of
metals, such as chloride, acid, and sulfide in the equipment room. The
equipment room must be protected against ingression of harmful
gases such as SO
2
, H
2
S, NH
3
, and Cl
2
. For specific requirements, see
the following table.
Table 2-2 Harmful gas limits in the equipment room
Gas Maximum concentration (mg/m
3
)
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01
2.2.3 Electromagnetic Susceptibility
The operation of your switch can be affected by external

H3C S5500-EI Series Specifications

General

Brand	H3C
Model	S5500-EI Series
Category	Switch
Language	English