6-1
6 Installation of Grounding System
Summary
Describing the method for installing the grounding
system
6.1 Introduction to the Grounding System
This section details the procedures to install the grounding system, including grounding
copper busbar and feeder cable grounding kit.
Grounding aims to protecting both the human being and the equipment against
lightning shock and electromagnetic interference.
The grounding system is composed of indoor groundings, outdoor groundings and
underground grounding net.
The grounding system of a ultra-wide coverage micro-BTS includes protection
grounding on the chassis, lightning arrester for RF components in the cabinet, for GPS
antenna, for T1 cables, for 120V AC power and for feeder cable grounding kit.
The customer needs to complete the construction of the basic grounding net and the
grounding system of the tower and other buildings, and offer the points for connecting
the indoor and outdoor grounding busbars to the grounding net through different
50mm
2
wires. The conductor led from the PGND terminal of the shelf is connected to
the grounding copper busbar, and the conductor led from the -48VGND of the shelf is
connected to the DC power copper busbar.
Each feeder cable should be connected to the outdoor grounding copper busbar through
the cable grounding kit before being led into the equipment room. See Fig. 6.1-1.
