Grounding The Switch; Grounding The Switch With A Grounding Strip - H3C S5120-SI Installation Manual

Figure 20 Magnet-mounting the switch
(1) M3*6 countersunk head screw
(3) Blind nut in the dent in the switch bottom

Grounding the switch

CAUTION:
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.
The grounding holes in the following figures are for illustration only.
The power input end of the switch has a noise filter, whose central ground is directly connected to the
chassis to form the chassis ground (commonly known as PGND). You must securely connect this
chassis ground to the earth to minimize the potential for system damage, maximize the safety at the
site, and minimize EMI susceptibility of the system.

Grounding the switch with a grounding strip

CAUTION:
Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a
fire main or lightning rod.
If a grounding strip is available at the installation site, connect the grounding cable to the grounding
strip.
Connecting the grounding cable to the switch
Remove the grounding screw from the grounding hole in the rear panel of the chassis.
1.
Use the grounding screw to attach the ring terminal of the ground cable to the grounding hole.
2.
Fasten the screw.
(2) Permanent magnet
14