Huawei RRU3269 Installation Manual page 102

RRU3269
Installation Guide
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Cabling of PGND cables
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Cabling of E1 cables
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Cabling of fiber optic cables
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Issue Draft B (2018-05-15)
After routing a DC power cable onto the platform on a tower, route it along the shortest
path to the rails surrounding the platform, and route it along the inside of the rails.
After routing a DC power cable close to the equipment on a tower, use clips to secure the
power cable onto a pole or the rails surrounding the platform. Ensure that there is no
excessively long distance between the equipment and the position where the power cable
is secured.
PGND cables for a base station must be connected to the same group of ground bars.
PGND cables must be buried in the ground or routed indoors.
The external conductor of the coaxial wire and the shield layer of the shielded cable must
have proper electrical contact with the metal surface of the equipment to which they are
connected.
PGND cables and signal cables must be installed separately. A certain distance must be
reserved between them to prevent interference from each other.
Switches or fuses must not be installed on the PGND cables.
Other devices must not be used for electrical connections of the PGND cables.
All the metal parts in the housing of the equipment must be reliably connected to the
ground terminal.
E1 cables must not cross power cables, PGND cables, or RF cables when laid out. If
transmission cables are laid out with power cables, PGND cables, or RF cables in
parallel, the spacing between them must be greater than 30 mm (1.18 in.).
E1 cables are lined up straight and bound neatly with cable ties.
Sufficient slack is provided for E1 cables at turns.
E1 cables must not be pressed by the door of the cabinet when routed, as shown in the
following figure.
Figure 9-4 E1 cables routed in the cabinet
At least three people are required for laying out fiber optic cables. The cabling activities
of fiber optic cables are allowed only when qualified personnel and communication
facilities are available.
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9 Installing RRU Cables
94