Ruijie Reyee RG-ES0 Series Cookbook page 66

Hardware Installation and Reference Guide
Apart from dust, the salt, acid, and sulfide in the air in the server room must meet strict requirements. These
harmful substances will accelerate metal corrosion and component aging. Therefore, the equipment room should
be properly 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.
Table 2-2 Requirements for Gases
Gas
Sulfur dioxide (SO
Hydrogen sulfide (H
Nitrogen dioxide (NO
Chlorine gas (CI
Note
Average refers to the average value of harmful gases measured in one week. Maximum refers to the upper
limit of harmful gases measured in one week, and the maximum value lasts up to 30 minutes every day.
6. Grounding Requirements
A proper grounding system is the basis for stable and reliable running 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.

Safety Grounding
Ensure that the cabinet and power distribution device are properly grounded when the device uses the AC
power supply. Otherwise, electric shock may occur when the insulation resistance between the power supply
inside the device and the chassis becomes small.
Caution
Please adopt protection grounding connections in buildings so that the device can be connected to the protection
ground.
Check whether the AC socket is reliably connected to the protection ground of the building. If not, a protection
ground wire should be used to connect the protection ground lug of the AC socket to the protection ground of
the building.
The cross-sectional area of the protection ground cable should be at least 0.75 mm

Lightning Grounding
The lightning protection system of facilities is standalone, and is composed of a lightning rod, a lower
conductor, and a connector connected to the grounding system. The grounding system is usually used for
power reference grounding and safety grounding of the cabinet. Lightning grounding is required only for
facilities and is not required for the device.

EMC Grounding
Average (mg/m
) 0.3
2
S) 0.1
2
) 0.5
2
) 0.1
2
3
)
58
Getting Started
3
Maximum (mg/m )
1.0
0.5
1.0
0.3
2
(18 AWG).