Table 2-1 Dust Concentration Limit In The Equipment Room; Table 2-2 Harmful Gas Limits In The Equipment Room; Electromagnetic Susceptibility - H3C S5500-EI Series Quick Start Manual

Quick Start
H3C S5500-EI Series Ethernet Switches
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
Dust
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
the following table.

Table 2-2 Harmful gas limits in the equipment room

Gas
SO
2
H S
2
NH
3
Cl
2

2.2.3 Electromagnetic Susceptibility

The operation of your switch can be affected by external
Concentration limit (particles//m³)
4
≤ 3 x 10 (no visible dust on the tabletop over
three days)
, H S, NH , and Cl
2 2 3
Maximum concentration (mg/m
0.2
0.006
0.05
0.01
2-3
Chapter 2 Installation
. For specific requirements, see
2
Preparations
3
)