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HUAWEI NIP6800 Series V500 Hardware Guide

This document of the NIP6800 Series describes hardware structure, installation guide, and hardware maintenance. The content of this document includes the appearance and specifications of the product, the supported expansion cards, preparation before the installation, installation, cabling, and hardware replacement.
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Grounding Specifications for Communications Power Supply

Grounding Specifications for Communications Power Supply

This section describes the requirements for grounding communications power modules.

Table 4-18 lists the grounding specifications for communication power supply.

Table 4-18  Grounding specifications for communication power supply

No.

Description

1

The AC power supply system of the communication equipment room should adopt the TN-S power supply mode.

2

The inlet for the AC power cable at the equipment room should be equipped with a lightning protection device (C-level) with a nominal discharging current no less than 20 kA.

3

The protection ground for the power supply and that for communication equipment share the same grounding body group. If the power supply and equipment are in the same equipment room, try to use the same protection ground bar for both of them.

4

Add a lightning protection circuit for the AC power interface.

5

The anode of the -48 V DC power supply or negative pole of the 24 V DC power supply should be grounded at the output of the DC power supply.

6

The working ground and protection ground of the DC power supply equipment should use the same grounding body group with the protection ground of the switching equipment. If the power supply and equipment are in the same equipment room, try to use the same protection ground bar for both of them.

7

Add surge protection for the DC power interface.

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Updated: 2019-01-04

Document ID: EDOC1100059253

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