Grounding The Switch; Grounding Cable; Grounding The Switch With A Grounding Strip - HP JG221A Installation Manual

Grounding the switch

WARNING!
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.
NOTE:
The power and grounding terminals in this section 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 so the faradism and leakage electricity can be safely released to the earth to minimize EMI
susceptibility of the switch.
You can ground the switch in one of the following ways, depending on the grounding conditions available
at the installation site:

Grounding the switch with a grounding strip


Grounding the switch with a grounding conductor buried in the earth ground

Grounding the switch by using the AC power cord


Grounding cable

The A3100 v2 Switch Series is provided with a yellow-green grounding cable. One end of the cable has an
OT terminal, and the other end is naked and soldered. See
Figure 26 Grounding cable
1
(1) OT terminal of the grounding cable
Grounding the switch with a grounding strip
If a grounding strip is available at the installation site, connect the grounding cable to the grounding strip.
WARNING!
Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a fire
main or lightning rod.
NOTE:
The grounding cable supplied with the A3100 v2 Switch Series does not have an auxiliary OT terminal.
Connecting the grounding cable to the switch
To connect the grounding cable:
Remove the grounding screw from the rear panel of the switch chassis.
1.
Figure 26.
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