Grounding; Pole Grounding; Figure 3-17: Pole Grounding - Baicells Nova436Q Installation Manual

Nova436Q Outdoor 4x1W Two-Carrier TDD eNodeB Installation Guide
6. The input of the power adaptor connects to the outlet.
If the outlet is indoors, place the power adaptor indoors.

If the outlet is outdoors, place the power adaptor in a waterproof box.

7. After the cable connection is complete in the wiring cavity, tighten the screws on the cover to
close the wiring cavity using a Phillips-head screwdriver.

3.5 Grounding

3.5.1 Pole Grounding

The purpose of pole grounding is to protect the equipment as much as possible from potential damage of
lightning overvoltage. However, the interfaces between the eNB and the outside world mainly include
power system, grounding system, antenna feeder and lightning receiving device, and signal line. Therefore,
any damage caused by lightning primarily comes from the voltage difference between the equipment in
the eNB and one or more of the four interfaces. The pole grounding is shown in Figure 3-17.

Figure 3-17: 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 12 inches (0.3 m).
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