H3C S5820X-28S Installation Manual

Also see for S5820X-28C: Command reference Installation manual Manual

3-8Step1 Place the switch with bottom up carefully, and then clean the round holes on the chassis bottom with drycloth.Step2 Attach the rubber feet to the four round holes on the chassis bottom.Step3 Place the switch with upside up on the workbench.During the operation, you simply need to:z Make sure that the workbench is flat and sturdy.z Ensure good ventilation and a space of 10 cm (3.9 in.) around the chassis for heat dissipation.z Avoid heavy objects on the switch.Connecting the Ground Wirez Correctly connecting the switch ground wire is crucial to the lightning protection andelectromagnetic susceptibility (EMS) of a switch.z The power and grounding terminals in this section are for illustration only.The power input end of the switch is connected with a noise filter, whose central ground is directlyconnected to the chassis, forming the so-called chassis ground (commonly known as PGND). Thischassis ground must be securely connected to the earth so that the faradism and leakage electricity canbe safely released to the earth, enhancing the EMS capability of the switch.When a Grounding Strip is AvailableWhen a grounding strip is available at the installation site, attach one end of the yellow-green groundwire of the switch to the grounding screw on the grounding strip (the grounding screw and the groundinghole are on the rear panel of the switch and are marked with a grounding sign). To do this, follow thesesteps:Step1 Remove the grounding screw from the rear panel of the switch chassis.Step2 Put the supplied OT terminal of the PGND cable on the grounding screw.Step3 Fasten the grounding screw, which is attached with the OT terminal of the PGND cable, into thegrounding screw hole with a screwdriver.