Arctica 4804iq Series switch Installation Guide Chapter 2 Installation Notice
Gas Average (mg/m³)
Max (mg/m³)
SO
2
0.2
1.5
H
2
S 0.006
0.03
NO
2
0.04
0.15
NH
3
0.05
0.15
Cl
2
0.01
0.3
Table 2
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2 Environmental Requirements: Particles
2.1.2.Temperature and Humidity
Although the switch is designed to use 3 fans, the site should still maintain a
desirable temperature and humidity. High-humidity conditions can cause electrical
resistance degradation or even electric leakage, degradation of mechanical properties
and corrosion of internal components. Extreme low relative humidity may cause the
insulation spacer to contract, making the fastening screw insecure. Furthermore, in dry
environments, static electricity is liable to be produced and cause harm to internal
circuits. Temperature extremes can cause reduced reliability and premature aging of
insulation materials, thus reducing the switch’s working lifespan. In the hot summer, it is
recommended to use air-conditioners to cool down the site. And the cold winter, it is
recommenced to use heaters.
The recommended temperature and humidity are shown below:
Temperature:
Relative humidity
Long term condition
Short term condition Long term condition Short term condition
15 ~ 30°C
0 ~ 45°C
40 ~ 65%
5 ~ 85%
Table 2
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3 Environmental Requirements: Temperature and Humidity
Caution!
A sample of ambient temperature and humidity should be taken at 1.5m above the
floor and 0.4m in front of the switch rack, with no protective panel covering the front and
rear of the rack. Short term working conditions refer to a maximum of 48 hours of
