Ruijie RG-S5000-24GT4MS-E - Anti-Interference Requirements; Grounding Requirements; Safety Grounding

Hardware Installation and Reference Guide Preparing for Installation
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protected against the intrusion of harmful gases, such as sulfur dioxide, hydrogen sulfide, nitrogen dioxide, and chlorine
gas. The following table lists limit values for harmful gases.
Gas
Average (mg/m
3
)
Maximum (mg/m
3
)
Sulfur dioxide (SO
2
)
0.3
1.0
Hydrogen sulfide (H
2
S)
0.1
0.5
Nitrogen dioxide (NO
2
)
0.5
1.0
Chlorine gas (CI
2
)
0.1
0.3
Average refers to the average value of harmful gases measured in one week. Maximum refers to the upper limit of
the harmful gas measured in one week, and the maximum value lasts up to 30 minutes every day.
2.2.4 Anti-interference Requirements
The switch is susceptible to external interference by capacitive coupling, inductive coupling, electromagnetic waves,
common impedance (ground) coupling, or conduction over power lines, signal lines and output lines. Therefore, pay
attention to the following points:
 In a TN earthing system, use a single-phase three-core power socket that has protective earthing conductors (PE) to
allow the filter circuit in the device to eliminate interference from the power grid.
 The switch should be located far away from the large power radio launch pads, radar launch pads, and
high-frequency large-current devices.
 Use EMI shielding such as shielded interface cables to minimize interference when necessary.
 Route interface cables only indoors to prevent signal ports from getting damaged by overvoltage or overcurrent
caused by lightning strikes.
2.2.5 Grounding Requirements
A proper grounding system is the basis for stable and reliable running of the RG-S5000-E series switches and is
indispensable for preventing lightning strikes and interference. Carefully check the grounding conditions at the installation
site according to the grounding specifications, and complete grounding properly based on the actual situation.
Carefully check the grounding conditions at the installation site according to the grounding specifications, and
complete grounding properly based on the actual situation.
Safety Grounding
Ensure that the switch is securely grounded using a yellow/green grounding cable when the switch uses the AC power
supply. Otherwise, electric shock may occur when the insulation resistance between the power supply inside the switch
and the chassis becomes small.
The building should provide a protective ground connection to ensure that the device is connected to the protection
ground.
Installation and maintenance personnel should check whether the AC socket is reliably connected to the protection
ground of the building. If not, installation and maintenance personnel should use a protective ground cable to
connect the protection grounding lug of the AC socket to the protection ground of the building.
The power socket should be installed in an easily operable position near the device.
During the device installation, be sure to connect the ground cable first and disconnect it last.