H3c-technologies H3C SecPath F100-C-EI Instrukcja Użytkownika Pobierz pdf (Strona 33)

Installation Manual

H3C SecPath F100-C-EI Firewall

Chapter 3 Installing the Firewall

3-4

3.3 Connecting the PGND Wire

Warning:

The correct connection of protection ground (PGND) wire is essential

for safeguarding the firewall against lightning strikes and interference.

Therefore, first correctly connect the PGND wire before installing and

using the firewall.

The AC input end of the firewall is connected to a noise filter

whose ground point is connected to the chassis directly. This ground is

called PGND or chassis ground. The PGND must be properly

connected to the earth to channel induced currents and creepage

currents safely to the earth, improve the device’s electromagnetic

compatibility (EMC) performance, and protect the device against

lightning voltages introduced by external network cables.

On the rear panel of the firewall, the grounding screw resides at

the bottom right by a grounding mark, as shown in

Figure 3-5.

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H3c-technologies H3C SecPath F100-C-EI Instrukcja Użytkownika Strona 33