Before the installation of the device, make sure that ground connection 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 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 1
Ω
. The RG-S5750-S backplane has one grounding pole.
Figure 2-1 Grounding of the RG-S5750-S
Lightning Resistance
When the AC power cable is imported outdoors and directly connected to the power port of the switch, lightning
preventing wires should be adopted to prevent the switch from being hit by lightning shocks. The lightning preventing
wires can be fixed on the cabinet, work station, or the equipment room’s wall through line buckles and screws. In
applications, the AC current first enters the lightning preventing wires and then the switch.
