Huawei NetEngine 8000 F User Manual

● Keep the equipment far away from high-power radio transmitters, radar units,
and high-frequency and high-current equipment.
● Use electromagnetic shielding if necessary.
Requirements for Lightning Proof Grounding
Table 4-31 lists the requirements for lightning proof grounding.
Table 4-31 Requirements for lightning proof grounding
Item Requirements
Capital
construction
● Use reinforced concrete to construct the equipment room.
● Install a lightning proof device like a lightning rod outside
the room.
● The lightning proof ground shares the same grounding
body with the protective ground of the room.
Power cables
leading in the
equipment
room need to
be equipped
with a surge
protector
● After the AC low-voltage power cables are led into the
room, install the surge protector for the power cables in the
AC voltage stabilizer and the AC power distribution panel
(box). Correctly ground the surge protector nearby.
● After the DC power cable is led into the equipment room or
outdoor cabinet from outdoors or outside the cabinet,
install a power lightning protection device for the DC power
cable. The lightning protection device should be grounded
in proximity.
● For an equipment room in urban area, install a power
supply surge protector with the nominal discharge current
of no less than 20 kA. For an equipment room that is built
in a suburb and subject to lightning strikes, install a power
supply surge protector with the nominal discharge current
of more than 60 kA. For an equipment room that is built in
a mountain area and subject to frequent lightning strikes,
or in a separate high-rise building in a city, install a power
supply surge protector with the nominal discharge current
of more than 100 kA.
● The ground cable of the surge protector should be no
longer than 1 m (3.28 ft).
Grounding for
DC power
distribution
● Connect the DC working ground (positive pole of the -48 V
DC power supply or the negative pole of the 24 V DC power
supply) with the indoor collective ground cable nearby. The
total ground cable should meet the maximum load of the
equipment.
● The power equipment must have a DC working ground
cable, which can connect the power equipment to the
collective ground cable of the telecommunication site (or
the protective ground bar of the equipment room).
HUAWEI NetEngine 8000 F
Hardware Guide 4 Hardware Installation and Parts Replacement
Issue 05 (2023-03-31) Copyright © Huawei Technologies Co., Ltd. 495

Huawei NetEngine 8000 F Specifications

General

Brand	Huawei
Model	NetEngine 8000 F
Category	Network Router
Language	English