Ruijie RSR10 Series, Руководство по установке оборудования

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Chapter 2 Preparing for Installation Installation Manual
2-2
humidity for a long time, the insulating materials may have poor insulation, electrical leakage
or other mechanical performance degrade may be caused. On the other hand, if the relative
humidity is too low, the insulating washers may become dry and shrink, which may cause
loosened screws. In addition, static electricity may easily occur in dry weathers, harming the
internal circuitry of the routers. High temperature will speed the aging of insulation materials,
lowering routers' reliability and shorten their lives.
The temperate and humidity requirements of Ruijie RSR 10/20 series routers are as follows:
 Temperature: 0ºC~45ºC
 Relative humidity: 10%–90%
Note
The ambient temperature and humidity refer to the values measured at the
place 1.5 m above the floor and 0.4 m in the front of the router rack without
protective boards.
The temperature and humidity requirement may be different for different
products. For the specifics, refer to the information of the characteristic
parameters of each product.
2.2.2 Cleanness Requirements
Dust also poses a major threat to the safe running of the routers. Indoor dust may be
absorbed by the static electricity on the routers, causing loose contact, which may not only
shorten the service life of the equipment, but also cause communication faults. The
electrostatic attraction is easier to occur when the relative humility is low.
The following table gives Ruijie routers' requirements on dusts density and diameter in
equipment room.
Maximum diameter ( μ m) 0.5 1 3 5
Maximum density (number of
particles per cubic meters)
1.4×10
7
7×10
5
2.4×10
5
1.3×10
5
In addition to dusts, there are also strict requirements for the sulphides in the air of the
equipment room. Such harmful gases will accelerate the corrosion of the metal and the
aging of some components. The specific restrictions for the harmful gases such as SO
2
, H
2
S,
NO
2
, NH
3
and Cl
2
are as shown below:
Gas Average (mg/m
3
) Maximum (mg/m
3
)
SO
2
0.2 1.5
H
2
S 0 0.03
NO
2
0.04 0.15
NH
3
0.05 0.15
Cl
2
0.01 0.3