H3C S5120-SI Series Installation Manual

Also see for S5120-SI Series: Quick start guide Operation manual Configuration guide Command reference Configuration guide

Contents

H3C S5120-SI Series Installation Manual Manual pdf 23 page image

3-6z Ensure good ventilation and a space of 10 cm (3.94 in.) around the chassis for heat dissipation.z Avoid heavy objects on the switch.Connecting the PGND Cablez Correctly connecting the switch PGND cable is crucial to the lightning protection andelectromagnetic susceptibility (EMS) of a switch.z The power interface 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 PGNDcable of the switch to the grounding screw on the grounding strip (the grounding screw and thegrounding hole are on the rear panel of the switch and are marked with a grounding sign). To do this,follow these steps: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.