Name: Huawei NetEngine 8000 F
Brand: Huawei
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4.2.12.3.4 Grounding Specications for Communications Power Supply

Table 4-80 shows the grounding specications for communication power supplies.

Table 4-80 Grounding specications for communication power supplies

No. Description

1 The inlet for the AC power cable at the equipment room should be

equipped with a surge protection device (C-level) with a nominal

discharge current no less than 20 kA.

2 The protective ground for the power supply and that for communication

equipment share the same grounding conductor. If the power supply and

the equipment are in the same equipment room, use the same

protective ground bar for them if possible.

3 Use a surge protection circuit on the AC power interface.

4 The positive 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.

5 The working ground and protective ground of the DC power supply

equipment should use the same grounding conductor with the protective

ground of the switching equipment. If the power supply and equipment

are in the same equipment room, use the same protection ground bar

for them if possible.

6 Add surge protection on the DC power interface.

4.2.12.3.5 Grounding

Specications for Signal Cables

Table 4-81 lists the grounding

specications for signal cables.

Table 4-81 Grounding specications for signal cables

No.

Description

1 Equip the cable outdoors with a metal jacket, well grounded at both

ends, or connect the ends of the metal jacket to the protective ground

bar of the equipment room. For cables inside the equipment room,

install surge protection devices at the interface to the equipment. The

PGND cable for the surge protection devices should be as short as

possible.

2 The incoming and outgoing signal cables to and from the oce and

unused wires inside the cable should be grounded for protection.

HUAWEI NetEngine 8000 F

Hardware Guide 4 Hardware Installation and Parts Replacement

Huawei NetEngine 8000 F User Manual

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