What's Grounding Requirements for the Server

The server and supporting equipment (such as mobile base stations, switches, and power supplies) in the TR should be grounded. The PGND cables of the equipment in the communication office should be finally connected to the total ground bar.

PGND cables of the equipment in a line should be connected to the ground bar of the first cabinet. PGND cables of the equipment not in a line but in the same TR should be connected to the protection ground bar of the TR.

The -48 V power cable that is led out from the -48 V power input terminal of the server should be connected to the -48 V bus bar of the power cabinet or power distribution cabinet that is provided and used by the customer. Similarly, the RTN cable that is led out from the RTN power input terminal should be connected to the RTN bus bar.

The PGND cable that is led out from the total ground terminal of the server should be connected to the nearest protection ground bar that is provided and used by the customer.

NOTE:
If the server is powered by a power distribution cabinet, the PGND cable that is led out from the total ground terminal of the cabinet should be connected to the protection ground bar of the power distribution cabinet.
If the server is powered by a power cabinet, the PGND cable that is led out from the total ground terminal of the cabinet should be connected to the nearest protection ground bar of the power cabinet or that of the TR.

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