Ruijie RG-WALL 1600-Z3200-S - Grounding Requirements

Hardware Installation and Reference Guide Preparing for Installation
10
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 2-3 Requirements on Gases
Gas
Average (mg/m
3
)
Maximum (mg/m
3
)
Sulfur dioxide (SO
2
)
0.2
1.5
Hydrogen sulfide (H
2
S)
0.006
0.03
Nitrogen dioxide (NO
2
)
0.04
0.15
Ammonia gas (NH
3
)
0.05
0.15
Chlorine gas (CI
2
)
0.01
0.3
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 for up to 30 minutes every day.
2.2.5 Grounding Requirements
A proper grounding system is the basis for stable and reliable running and is indispensable for protection against
lightning 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.
 Safe Grounding
Ensure that the cabinet and power distribution device are securely grounded when the device uses an 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
The building should provide protective grounding to ensure that the device can be properly grounded.
 Lightning Grounding
The lightning protection system of facilities is standalone, and is composed of a lightning rod, a down
conductor, and a connector connected to the grounding system. The grounding system is typically used as
the reference point for power supply and for safe grounding of the cabinet. Lightning grounding is required
only by facilities and is not required by the device.
 EMC Grounding
Grounding for electromagnetic compatibility (EMC) includes shielded grounding, filter grounding, noise and
interference suppression, and level reference.
The grounding resistance should be smaller than 1 ohm. The grounding terminal on the cabinet should be
properly grounded before device running.