2-16
Grounding the switch
CAUTION:
•
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
•
Do not connect the grounding cable to a fire main or lightning rod.
•
To guarantee the grounding effect and avoid switch damage, use the grounding cable provided
with the switch to connect the switch to a grounding strip in the equipment room.
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.
To ground the switch:
1.
attach the two-hole grounding lug of the grounding cable to a
grounding point on the chassis. For more information, see "
Connecting the grounding cable to
."
is for illustration only.
2.
Remove the hex nut of a grounding post on the grounding strip.
3.
Attach the ring terminal of the grounding cable to the grounding post on the grounding strip, and
secure the ring terminal to the grounding post with the hex nut.
Figure2-26 Connecting the grounding cable to a grounding strip
(1) Hex nut
(2) Ring terminal
(3) Grounding post
(4) Grounding strip
1
2
3
4
