In an environment with low relative humidity, however, the insulating strip may dry and shrink. Static electricity may
occur easily and endanger the circuit on the equipment.
In an environment with high temperature, the equipment is subject 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-2910C-XS-P must meet the requirements listed in Table 2-1:
Table 2-1 Temperature and Humidity Requirements of the RG-2910C-XS-P
Temperature
Relative Humidity
0 to 50ºC
10% to 90%
The ambient temperature and humidity are measured at the point that is 1.5 m above the floor and 0.4 m before
the equipment when there is no protective plate in front or back of the equipment rack.
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
Unit
Density
Diameter
≥
0.5
μ
m
Particles/m
3
≤
3.5
×
10
6
Diameter
≥
5
μ
m
Particles/m
3
≤
3
×
10
4
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
Average (mg/m
3
)
Maximum (mg/m
3
)
SO
2
0.3
1.0
