QTech QSW-4600 Series Hardware Installation And Reference Manual page 32

QSW-4600 Series Switch Hardware Installation and Reference Guide
Table 2-1 Temperature and Humidity Requirements of the QSW-4600 Series Switch
Temperature
0 ºC to 50ºC
The requirements for the sampling site of the temperature and humidity in the operating environment of the device
are as follows:
There is no protective plate at the front or back of the equipment rack.
The vertical height is 1.5 m above the floor.
The distance from the front panel of the equipment is 0.4 m.
2.2.3 Cleanness
Dust poses a severe threat to the running of the equipment. The indoor dust falling on the equipment may be adhered by
the static electricity, causing bad contact of the metallic joint. Such electrostatic adherence may occur more easily when
the relative humidity is low, not only affecting the useful life of the equipment, but also causing communication faults.
Table 2-2 shows the requirements for the dust content and granularity in the equipment room.
Table 2-2 Requirements for the Dust Content and Granularity in the Equipment Room
Dust
Diameter≥0.5μm
Diameter≥5μm
Apart from dust, the salt, acid and sulfide in the air in the equipment room must also meet strict requirements, as such
poisonous substances may accelerate the corrosion of the metal and the aging of some parts. The equipment room
should be protected from the intrusion of harmful gases such as sulfur dioxide, sulfured hydrogen, nitrogen dioxide, and
chlorine), whose requirements are listed in Table 2-3.
Table 2-3 Requirements for Harmful Gases in the Equipment Room
Gas
SO
2
H S
2
NO
2
Cl
2
Both average and maximum value are measured for a week. The switch cannot be placed in the environment with
the maximum density for over 30 minutes every day. ..
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Relative Humidity
10% to 90%
Unit Density
≤3.5×10
3
Particles/m 6
≤3×10
3
4
Particles/m
Average (mg/m3)
0.3
0.1
0.5
0.1
Maximum (mg/m3)
1.0
0.5
1.0
0.3
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