D-Link DGS-6604 — установка и требования к заземлению управляемых Ethernet коммутаторов [58/111]

Превью страниц Страница 58 / 111

DGS-6600 Layer 3 Chassis Ethernet Managed Switch Hardware Installation Guide

System Grounding Requirements

The DGS-6600 Series Switch requires a good grounding system to ensure stable and reliable operations. The

grounding system is an important factor in preventing damage from electrical discharges or resistance

interference. Before installing the Switch, carefully check the grounding conditions at the installation site to see if

they meet the grounding requirements.

Safety Grounding

Any equipment using an AC power supply must be grounded using the yellow/green safety grounding cable.

There may be a risk electric shock if the yellow/green safety cable is not used and the insulating resistance

decreases in the power supply and in the equipment enclosure.

Lightning Grounding

The Switch includes a separate system for handling lightning protection. The lightning protection system consists

of a lightning rod, a down-lead conductor and a connector for the grounding system. The connector for the

grounding system usually shares the power reference ground and the yellow/green safety cable ground. The

lightning discharge ground is only used by the lightning protection system and is irrelevant for the rest of the

switch system.

Figure 2-3 Diagram showing the schematic for the grounding points at the back of the DGS-6604

NOTE: The power supply of the DGS-6604 provides 1+1 redundancy. In order to ensure the

stability and continuous operation of the Switch, multiple power supplies should be installed

in the Switch, this will provide a backup in case one power unit fails. Please install the same

types of redundant power supply units, using different power supplies is not supported by

the Switch.