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Figure 3-11: Pole Grounding
1.
The installation position of the grounding bar should meet the design requirements. The
holding pole and tower body must be connected to the lightning protection network or
grounded with a separate lead.
2.
The diameter of the grounding wire should meet the design requirements. The copper nose
must be used for grounding, and the grounding resistance is required to be less than 10 ohms.
If the resistance of the public network communication equipment placed in other systems is
less than 10 ohms, the grounding network of the system should be overlapped.
3.
The grounding wire must be the whole wire material. When laying, it should be bound
separately with other cables. All grounding wires should be fixed with wire core or binding
tape with a fixed spacing of 0.3 m.
4.
The copper bar must be used for the grounding bar, and the specification of the grounding bar
shall meet the design requirements. If there are no specific requirements in the design,
300 × 40 × 4 mm and fixed with expansion bolts.
5.
The grounding wire must be made of the whole cable material, the intermediate joint is strictly
prohibited, and the excess length should be cut. The skin shall be complete, and the insulation
resistance of the core wire to the ground (or metal isolation layer) shall meet the technical
requirements of the cable.
6.
The grounding wire shall be connected to the integrated grounding bar of the building. If it is
impossible to connect to the integrated grounding bar of the building, the appropriate
grounding point can be selected according to the integrated grounding situation of the indoor
building. The selection of grounding point must be higher than the grounding grid, and the
feeder grounding shall be towards the downward direction of the feeder, never upward.
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