User Manual
Installation
27
4.4.3
Cabling
Cabling Requirements
Lay out cables according to requirements to reduce interference between them.
Safety Requirements
Lay out cables away from sharp objects or jagged walls, or protect cables using conduit.
Lay out cables away from heat sources, or add heat-insulation materials between cables and heat
sources.
Requirements for Binding Cables
Bind same cables together.
Bind cables securely and neatly, without damaging the cable jackets.
Ensure that cable ties face the same direction and are aligned in rows horizontally.
After installing cables, attach labels or tags to the two ends of each cable.
Cables of different types cannot be crossed.
Requirements for Laying Out Power Cables
The routing of power cables must meet engineering design drawing requirements.
If the power cable length is insufficient, replace the power cable. The power cable must be complete
and cannot have splices or welding points.
Avoid knotting or twisting the cable.
Requirements for Laying Out Grounding Cables
The grounding cable cannot be led in aerially, but buried in the earth or arranged indoor.
The grounding cables must be separated from signal cables to reduce interference between them.
All metal components in the chassis must be securely connected to the grounding cable.
Requirements for Laying Out Optical Fibers
Do not bind optical fibers where they are bent.
Do not press optical fibers forcibly or crush optical fibers with force. Leave sharp objects away from
optical fibers to prevent damage to optical fibers.
Coil up redundant optical fibers around specialized devices such as the splice tray.
Optical jumpers must be bound with optical fiber tapes. If the fiber is required to be fixed on the cabinet
or device, then use the cable tie to bind the fibers on the optical fiber tape. Attention that the optical fiber
must be flexible in the cable tie, and must not be bent into 90° angle.
Coil optical fibers gently and do not break them.
Summary of Contents for DS-9300
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