Installation Manual
7. Appendix
D-4
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5
The neutral line of the AC power cable in the equipment room cannot be
connected with the protection ground of the communication routers in
the equipment room.
6
The length of the protection ground wire should not exceed 45 m, but
should be as short as possible. When exceeding 45m, it is required that
the consumer re-sets the ground bar nearby.
D2
Router Protection
This section mainly describes the precautions for the lightning protection of the router during
installation.
D2.1
General Requirement of Lightning Protection Wires
The router cables can be divided to indoor cables and outdoor cables according to the location
of connecting the terminal. They have different requirements for the wiring in the lightning
protection design.
Communication connection cable should be routed indoors, which can
effectively reduce the damage rate of the induction lightning of the router.
The Ethernet cable is the interconnection line of the indoor signal and
should not be led aerially outdoors.
The general requirements for the wiring of the indoor cables:
The cable installation is required to be routed by category, avoiding that the cables of
different categories are bundled together.
It is recommended that the cable is bundled with one cable clip every 100 mm, to organize
and fix the cables.
The ground wire should be as short and thick as possible. The connection of the ground wire
and grounding bar needs to use the screw to tighten or welding and preservative treatment.
The general requirements for the wiring of the outdoor cables:
If the actual conditions cannot meet the indoor wiring, the outdoor cables should be laid and
buried (introduced to the indoor from the underground).
If you cannot lay and bury all outdoor cables, the aerial cables should be dressed with the
metal pipes 15m before entering the indoor. The two sides of the metal pipe are grounded
and we should install the signal arrester at the corresponding interface of the router after
the cable enters the indoor.