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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
The power and grounding terminals in this section are for illustration only.
Grounding the switch with a grounding strip
!
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 chassis
1. Remove the grounding screw from the rear panel of the switch chassis.
2. Use the grounding screw to attach the ring terminal of the grounding cable to the grounding
screw hole. Fasten the screw. The recommended torque is 12 kgf-cm (1.18 Nm).
Orient the grounding cable as shown in Figure 7 so you can easily install or remove the fan module.
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