H3C S5120-SI Series Installation Manual

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

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H3C S5120-SI Series Installation Manual Manual pdf 25 page image

3-8z The PGND cables supplied with the S5120-SI series do not provide OT terminals at the endsconnecting the grounding strip. You need to prepare proper OT terminals by yourself.z The fire main and lightning rod of a building are not suitable for grounding the switch. The PGNDcable of the switch should be connected to the grounding device for the equipment room.Where a Grounding Conductor Can be BuriedWhen there is no grounding strip, but an area with exposed earth is available nearby where a groundingconductor can be buried, hammer a 0.5 m (1.64 ft.) or longer angle iron or steel tube into the earth. Theangle iron should have a dimension no less than 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in.) and the steeltube should have a wall thickness no less than 3.5 mm (0.14 in.) and be zinc-coated. Weld theyellow-green PGND cable to the angel iron or steel tube and treat the joint for corrosion protection.Figure 3-11 Ground the switch by burying the grounding conductor into the earth(1) Grounding screw (2) PGND cable (3) Earth(4) Joint (5) Grounding conductor (6) Switch rear panelIn Other Installation SitesWhen the switch is AC-poweredFor an AC-powered switch, if neither of the above-mentioned two conditions is available, ground theswitch through the PE wire of the AC power supply. Make sure the PE wire is well connected to theground at the power distribution room or AC transformer side, the switch PE terminal and the PE wireare well connected, and the three-wire input cable of the PGND cable is used for the power supply cable.If the PE wire of the AC power supply is not grounded at the power distribution room or AC transformerside, report the problem and make reconstructions.