RG-IS2700G Series Switch Hardware Installation and Reference Guide
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-IS2700G must meet the requirements listed in Table 2-1:
Table 2-1 Temperature and humidity requirements of the RG-S2600-RG-IS2700G series
Temperature
Relative Humidity
-40ºC-85ºC
5%-95% (non condensing)
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.
2.2.3 Cleanness Requirements
Dust poses the top threat to the running of the equipment. The 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. The following table
shows the requirements for the dust content and granularity.
Table 2-2
Maximum diameter (μm)
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 must also meet strict requirements; as such poisonous substances
may accelerate the corrosion of the metal and the aging of some parts. The 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/m3)
Maximum (mg/m3)
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
2.2.4 EMI
Though the RG-IS2700G series have been equipped with anti-EMI measures, they will still be affected when EMI exceeds
a certain limit. During applications, the switch may be subject to external interferences that affect the device through
conduction manners such as capacitance coupling, inductive coupling, electromagnetic wave emission, common
impedance (including grounding systems), and wires (power cables, signal cables and outgoing transmission cables). For
that purpose, note that:
For the AC power supply system TN, single-phase three-core power socket with protective earthing conductors (PE)
should be adopted to effectively filter out interference from the power grid through the filtering circuit.
