Installation Manual
H3C SecPath F1000-E Firewall
Chapter 4 Installing the Firewall
4-5
Figure 4-6
Fix the front rack-mounting brackets on the rack
4.4 Installing Generic Modules
Generic modules include memory module, CF card, and HIM. For their installation
procedures, refer to Chapter 7 “Maintaining Hardware”.
4.5 PGND Cable Connection
4.5.1 Importance of the PGND Cable
Warning:
The correct connection of the protection ground (PGND) cable on the firewall chassis is
an essential safeguard against the lightning strokes and EMI. You need to correctly
connect the PGND cable when installing or using the firewall.
The power input end of the F1000-E is equipped with a noise filter. The neutral ground
of the power input end is directly connected to the chassis and is called PGND (also
known as chassis ground). You need to securely connect the PGND cable to the earth
ground to safely lead induced current and leakage current to the ground and reduce the
EMS of the firewall. The PGND cable can also protect the firewall against high lightning
voltage resulting from external network lines such as E1/T1 and PSTN line.
4.5.2 Connecting the PGND Cable
The grounding screw of the F1000-E is located on the lower left corner of the rear
chassis panel and is marked with a grounding sign, as shown in Figure 4-7.
