Ruijie RG-S5750-H Series User Manual

Hardware Installation and Reference Guide Preparation before Installation
42
of some parts. The equipment room should be protected from the intrusion of harmful gases (for
example, SO
2
, H
2
S, NO
2
and Cl
2
), whose requirements are listed in the following table.
Gas
Average (mg/m
3
)
Maximum (mg/m
3
)
SO
2
0.3
1.0
H
2
S
0.1
0.5
NO
2
0.5
1.0
Cl
2
0.1
0.3
2.2.4 Grounding
A good grounding system is the basis for the stable and reliable operation of the RG-S5750H series,
preventing lightning stroke and resisting interference. Please carefully check the grounding conditions
on the installation site according to the grounding requirements, and perform grounding operations
properly as required.
The correct connection of grounding lines guarantees the lighting and interference resistance of
switches and must be performed with precision.
Safety Grounding
The equipment 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.
Lightning Grounding
The lightning protection system of a facility is an independent system that consists of the lightning rod,
downlead conductor and the connector to the grounding system, which usually shares the power
reference ground and yellow/green safety cable ground. The lightning discharge ground is for the
facility only, but unnecessary for equipment.
EMC Grounding
The grounding required for EMC design includes shielding grounding, filter grounding, noise and
interference suppression, and level reference. All the above constitute the comprehensive grounding
requirements. The grounding resistance should be less than 1Ω. The RG-S5750H back panel has one
grounding stud.
Figure 2-1 Grounding

Ruijie RG-S5750-H Series Specifications

General

Brand	Ruijie
Model	RG-S5750-H Series
Category	Switch
Language	English