Ruijie Reyee RG-NBS3200 Series - Page 27

Ruijie RG-NBS3200 Series Switches Hardware Installation and Reference Guide Preparation Before Installation
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Effective grounding of the switch guarantees lightning protection and interference resistance. Therefore, connect
the grounding line of the switch properly.
Safety Grounding
The device using AC power supply must be grounded by using the yellow/green safety grounding cable. Otherwise,
when the insulating resistance decreases the power supply and the enclosure in the equipment, electric shock may
occur.
The building must provide the protective grounding connection to ensure that the device is connected to the
protection location.
The installation and maintenance personnel must check whether the A.C. socket is well connected to the
protection location of the building. If not, use a protective grounding wire to connect the grounding end of the A.C.
socket to the building's protection location.
The power supply socket must be installed in a place that is near to the device and where users can operate the
device easily.
Before device installation, ensure that the ground is connected at first and disconnected finally.
The sectional area of the protective grounding wire should be at least 0.75 mm
2
(18 AWG).
Use the 3-core power supply line. The sectional area of each pin should be at least 0.75 mm
2
or 18 AWG.
Lightning Grounding
The surge protection system of a facility is an independent system that consists of the lightning rod, down conductor,
and connector to the grounding system, which usually shares the power reference ground and ground cable. The
lightning discharge ground is targeted for the facility.
EMC Grounding
The grounding required for EMC design includes the shielding ground, filter ground, noise and interference suppression,
and level reference. All the above constitute the comprehensive grounding requirements. The resistance of earth wires
should be less than 1 Ω. The RG-NBS3200 series switch back plane is reserved with one grounding pole, as shown in
Figure 2-1.
Figure 2-1 Grounding of the RG-NBS3200