Hardware Installation and Reference Guide
Preparing for Installation
25
Correct grounding is the key to prevent lightning strikes and resist interference and must be performed by users.
Safety Grounding
Ensure that the switch are grounded through the yellow/green safety grounding cable when the device adopts 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.
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 t he switch.
EM C Grounding
Grounding required for electromagnetic compatibility includes shielded grounding, filter grounding, noise and interference
suppression, and level reference, which contribute to the overall grounding requirements. The grounding res istance
should be smaller than 1 ohm . The RG-S5760C-X back panel has one grounding connector.
Figure 2-1 Grounding of the RG-S5760C-X
2.2.5 Lightning Protection Requirements
The AC power port must be connected to an external lightning protection power strip to prevent the switch from being
struck by lightning when the AC power cord is introduced from the outdoor and directly connected to the power port of
the switch. The lightning protection power strip can be fixed on the cabinet, workbench, or wall in the eq uipment room by
using cable ties and screws. AC power enters the lightening protection power strip and then gets to the switch.
The RG-S5760C-X switch is delivered without a lightning protection socket. Please prepare a lightning protection
socket yourself.
For the usage of the lightning protection socket, refer to its manual.
2.2.6 EMI Consideration
Various interference sources, from either outside or inside the equipment or application system, affect the system in the
conductive ways such as capacitive coupling, inductive coupling, and electromagnetic radiation.
There are two types of electromagnetic interferences: radiated interference and conducted interference, depending on
the type of the propagation path. When the energy, often RF energy, from a co mponent arrives at a sensitive component
