Huawei AP8082DN Hardware Installation And Maintenance Manual page 43

AP8082DN and AP8182DN
Hardware Installation and Maintenance Guide
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Ground cable connections
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Issue 03 (2019-04-01)
The bend radius of the ground cables must be larger than or equal to five times the cable
diameter.
The ground cables must be buried underground or routed indoors and cannot be led into
the equipment room aerially.
Both ends of the external conductor of the coaxial cable and those of the shield layer of
the shielded cable should have good electric contact with the metal shell of the
equipment they connect to.
Ground cables must be separated from signal cables to reduce interference between
them.
Do not add any switch or fuse on the ground cable.
Do not use another device for an electrical connection with the ground cable.
All metal components in the shell must be securely connected to the ground terminal.
Cut the ground cable into a proper length and use the M4 OT terminal to connect to the
AP. The OT terminal used to connect to the ground terminal depends on site
requirements.
NOTE
To tighten the screws with a torque on the ground bar,
l M4: 1.4 N•m.
l M6: 4.8 N•m.
l M8: 12 N•m.
After the ground cable is connected, verify that the electrical resistance between the
ground terminal and ground point is less than 5 ohms on a multimeter. The grounding
resistance in an area with a high earth resistance rate should be less than 10 ohms.
Connecting the
ground bar
Copyright © Huawei Technologies Co., Ltd.
M4
1.4 N•m
M6
4.8 N•m
2 AP Installation
36