Wireless WaveNet Link AX, Инструкция по установке и эксплуатации

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WaveNet Link AX Installation and Operations Manual
Grounding of feeders
All antenna feeders should be bonded to the tower at the upper and lower ends and grounded
at the point of entry into the building. Weatherproof grounding kits are available from antenna
manufacturers.
Note: Many of the cables used by Wireless, Inc. have braided rather than solid outer
conductors; this type of grounding is not appropriate. In these cases we recommend the
use of Wireless, Inc. approved lightning arrestors. For information on lightning arrestors,
please contact Wireless, Inc.’s Customer Service department.
Grounding of buildings
A ground ring ideally should surround the building and be connected to individual grounds
associated with feeder entry, antenna support structure, building lightning conductor, equip-
ment room, main AC supply and other facilities. Each connection should be made by the most
direct route in order to minimize interaction between the different grounding functions.
The ground ring should consist of copper cable or tape with electrodes 2- meters or greater in
length, buried to a depth of 0.6-meters and at a distance from the building not to exceed 1-meter.
Buildings may require lightning rods where they are not within the zone of another protected
structure.
Bibliography
ITU - T K.40 Protection against LEMP in telecommunications centres
ITU - T K.27 Bonding configurations and earthing inside a telecommuni-
cation building
ITU - T K.35 Bonding configurations and earthing at remote electronic
sites
ITU - T K.39 Risk assessment of damages to telecommunications sites
due to lightning discharges
ITU - T Lightning Handbook The protection of telecommunication lines and equipment
against lightning discharges
IEEE Emerald Book - Powering and Grounding
The “Grounds” for Lightning and EMP Protection, second edition
Published by PolyPhaser Corporation