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RRU3931E
Installation Guide
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The cables must be bound as follows:
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The cables must be routed as follows:
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Special Cabling Requirements
Power cables must be routed as follows:
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PGND cables must be routed as follows:
Issue Draft A (2016-03-30)
The bending radius of a 7/8'' feeder must be greater than 250 mm, and the bending radius
of a 5/4'' feeder must be greater than 380 mm.
The bending radius of a 1/4'' jumper must be greater than 35 mm. The bending radius of
a super-flexible 1/2'' jumper must be greater than 50 mm, and the bending radius of an
ordinary 1/2'' jumper must be greater than 127 mm.
The bending radius of a power cable or PGND cable must be at least five times its
diameter.
The bending radius of a fiber optic cable must be at least 20 times its diameter.
The bending radius of a signal cable must be at least five times its diameter.
Cables must be bound tightly and neatly. The sheaths of cables must not be damaged.
Cable ties must face the same direction, and those at the same horizontal line must be in
a straight line. The excess of cable ties must be cut off.
Labels or nameplates must be attached to the cables after they are installed.
Cables of different types must be routed separately in an untangled and orderly fashion.
Cables of different types must be parallel to each other or separated by using dedicated
separators.
Cables must be routed away from sharp objects or wall burrs. If these positions are
inevitable, cables must be protected with protection pipes.
Cables must be routed away from heat sources, or heat-insulation materials must be
added between cables and heat sources.
Sufficient slack must be provided in cables at turns or the position close to a device,
facilitating cable and device maintenance. The recommended slack is 0.1 m.
AC power cables and PGND cables must be tubed when routed.
Drip loops must be reserved for cable layout at connection points and thru-wall points
indoors/outdoors.
All cables cannot be routed overhead. Cables laid out outdoors should be buried in the
ground.
Multiple power cables must be bound when routed.
Power cables must be installed in the positions specified in engineering design
documents.
If the length of power cables is insufficient, the power cables must be replaced instead of
adding connectors or soldering joints to lengthen the cables.
Cabling activities require strict organization and coordination, and are allowed only
when qualified personnel and communication facilities are available.
Cables must be routed in an untangled and orderly fashion.
AC power cables must be tubed when routed.
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Copyright © Huawei Technologies Co., Ltd.
1 RRU3931E Installation Guide
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