Temperature And Humidity - Ruijie RSR10-01G-T-I Series Hardware Installation And Reference Manual

Hardware Installation and Reference Guide

Lightning protection

Mounting Place

3.2.1 Temperature and Humidity

To ensure normal operation and useful life of the device, maintain appropriate temperature and humidity levels in your
equipment room. See Table 3-1. Improper room temperature and humidity can cause damages to the device.

High relative humidity may affect
sometimes may lead to change of mechanical properties of materials and corrosion of metal parts.
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Low relative humidity may dry and shrink insulation sheets and cause static electricity that can damage the
circuitry inside the device.
High temperature greatly reduces reliability of the device and shortens its useful life.
Table 3-1: Required Temperature and Humidity for the RSR10-01G-T(W)-I V2.00 Router
Temperature
-20º C to 60º C
The ambient temperature and humidity are measured at a point 1.5 meters (4.9 feet) above the ground and 0.4
meters (1.3 feet) before the device when there is no protective board in the front or back of the rack.
Different products require different temperature and relative humidity. Refer to the technical specifications of a
specific product.
3.2.2 Cleanness
Dust poses a serious threat to device operation. Dust that falls onto the surface of the device can be absorbed onto
metal contact points by static electricity, resulting in poor contact. Electrostatic absorption of dust occurs more easily
when the relative humidity is low, which may shorten the useful life of the device and cause communication failures.
Table 3-2 shows the maximum concentration and diameter of dust allowed in the equipment room.
Table 3-2 Maximum Concentration and Diameter of Dust Allowed
Maximum diameter (μm)
Maximum concentration
3
(Particles/m )
Besides, the content of salts, acids and sulfides in the air are also strictly limited for the equipment room. These
substances can accelerate metal corrosion and aging of some parts. Table 2-3 describes the limit of some hazardous
gases such as SO , H S, NO
2 2
Table 3-3 Limits of Hazardous Gases
Gas
SO
2
H S
2
NO
2
NH
3
Cl
2
insulation materials, resulting in poor insulation and even electrical leakage, and
0.5 1
7
1.4 × 10 7.0 × 10
and Cl in the equipment room.
2 2
Average (mg/m
0.2
0.006
0.04
0.05
0.01
Preparing for Installation
Relative Humidity
10% to 90%
3
5
2.4 × 10
3
)
5
5
1.3 × 10
3
Maximum (mg/m )
1.5
0.03
0.15
0.15
0.3
5