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2.
Use grounding screws to attach the two-hole grounding lug or single-hole grounding lug of the
grounding cable to the grounding point, and then fasten the screws. As a best practice, use a
torque of 30 kgf-cm (2.94 Nm) to fasten the grounding screws.
Figure2-14 Attaching the grounding cable that has a single-hole grounding lug to the
grounding point on the switch
Figure2-15 Attaching the grounding cable that has a two-hole grounding lug to the
grounding point on the switch
Grounding the switch
WARNING!
• Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
• Connect the grounding cable to the grounding system in the equipment room. Do not connect it
to a fire main or lightning rod.
CAUTION:
To guarantee the grounding effect, connect the switch to a grounding strip in the equipment room by
using the grounding cable provided with the switch.
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.
You can ground a switch by using a grounding strip at the installation site.
NOTE:
The grounding terminals in this section are for illustration only.
2-15
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