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HUAWEI NetEngine 8000 F
Hardware Guide
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4.1.12.3.5 Grounding Specifications for Signal Cables
Table 4-37
Table 4-37 Grounding specifications for signal cables
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4.1.12.3.6 Specifications for Laying Out Grounding Cables
Table 4-38
Issue 05 (2023-03-31)
Description
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.
Use a surge protection circuit on the AC power interface.
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.
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.
Add surge protection on the DC power interface.
lists the grounding specifications for signal cables.
Description
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.
The incoming and outgoing signal cables to and from the office and
unused wires inside the cable should be grounded for protection.
The Tone & Data Access (TDA) cable must pass through the Main
Distribution Frame (MDF) with surge protective device (SPD) when
going out of the office. The cable's shield layer should be connected to
the protective ground of the MDF. The MDF should use the same
grounding conductor as the cabinet.
Do not route signal cables overhead.
shows the specifications for the ground cable.
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4 Hardware Installation and Parts Replacement
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