Ruijie RG-S7800 Series, Руководство по установке оборудования

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Chapter 3 Preparation before Installation S7800 SeriesHardware Installation Guide
14
n
In an environment with high temperature, the equipment is subjected to even greater
harm, as its performance may degrade significantly and its useful life may be shortened
in the case of long-term exposure that expedites the aging process.
Therefore, the ambient temperature and humidity of the RG-S7800 equipment must meet
the requirements listed in Table 3-1:
Table 3-1Temperature and humidity requirements of the RG-S7800
Temperature Relative Humidity
Long-term working
condition Short-term working
condition Long-term working
condition Short-term working
condition
15
º
C-45
º
C 0
º
C-50
º
C 40%-65% 10%-95%
Warning
1. The ambient temperature and humidity are measured at the point that is
1.5m above the floor and 0.4m before the equipment when there is no
protective plate in front or back of the equipment rack.
2. The short-term working condition refers to less than continuous 48-hour
working and less than 15-day working accumulated each year.
3.2.4
Cleanness Requirements
Dust poses the top 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 use life of the equipment, but also causing communication faults. Table 3-2
shows the requirements for the dust content and granularity in the equipment room.
Table 3-2 Requirements for the dust content and granularity in the equipment room
Maximum diameter (
μ
m)
0.5 1 3 5
Maximum density
(Particles/m
3
)
1.4 x 10 7 x 10 2.4 x 10 1.3 x 10
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 (for example, sulfur dioxide, sulfured hydrogen, nitrogen dioxide,
and chlorine), whose requirements are listed in Table 3-3.
Table 3-3 Requirements for harmful gases in the equipment room
Gas Average (mg/m
3
) Maximum (mg/m
3
)
Sulfur dioxide 0.2 1.5
Sulfured hydrogen 0.006 0.03
Nitrogen dioxide 0.04 0.15
Ammonia 0.05 0.15
Chlorine 0.01 0.3
3.2.5
Power Requirements
When the RG-S7800 uses the AC power supply: