Installing Cabinet Pgnd Cables; Making Cabinet Pgnd Cables; Grounding Requirement - Huawei Airbridge BTS3606 Installation Manual

Installation Manual – BTS3606A Cabinet Installation
Airbridge BTS3606&3606A CDMA Base Station

5.8 Installing Cabinet PGND Cables

Both ends of the PGND cables for the cabinet are OT terminals (also called lugs).
Figure 5-45 shows a PGND cable.
Figure 5-45 PGND cable of the cabinet

5.8.1 Making Cabinet PGND Cables

The two wiring terminals of the PGND cable must be made on site during the
deployment. The method is the same as that of power cables. See section 5.7.2
"Making Power Cables". Measure the cabling route of the PGND cable to determine its
length.

5.8.2 Grounding Requirement

This section introduces the layout of the grounding system and requirement of
grounding cables and grounding resistance.
I. Layout of Grounding System
The grounding network of BTS site area must be jointly designed.
During the engineering design of BTS, the grounding system can be divided into two
independent systems: BTS system and cabling rack system. When planning the
grounding system, design these two systems separately. Connect the grounding cable
of BTS system to the grounding bar of the iron tower, and the cabling rack system to the
ground with independent grounding cables.
II. Grounding Cables
In the BTS engineering design, the customer must provide two independent grounding
cables: BTS grounding cable and cabling rack grounding cable. If the customer cannot
provide these two grounding cables, or the steel bar of the building is used for
grounding, lay these two grounding cables together, but ground them separately.
Use yellow-green cables with the cross-sectional area of 16 mm
2
29.9 ft )as the grounding cables and lead them to the grounding grid.
It is required that the grounding resistance is less than five ohm for normal operation of
BTS3606A.
Huawei Technologies Proprietary
5-43
Chapter 5 Installing Cables
2 2
- 25 mm (19.14 ft
2
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