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1.5.1. Lightning protection when the tuner is installed in a building
For details about lightning protection see
this manual.
a)
The tuner's terminal labeled GROUND should be connected through a low-impedance
connection with a cross section of no less than 20 sq. mm (preferably flat-shaped and solid -
band or plate, rather than with a flexible multistrand cable), to the main grounding plate of
the radio station (see Point
b)
The antennas should be connected by coaxial cables buried in the ground (when coming in
from the field) or securely attached to the wall of the building (when coming down from the
roof), all along the route from the antennas to the foundation of the building where, before
entering, are discharged from the lightning charges in a safe way - directly into the ground. For
this purpose, the braids of the coaxial cables should be securely grounded by a low-impedance
connection to the main grounding plate of the building (see Point
c)
From a low point close to the foundation of the building, before going up to the radio station,
the wires of the antenna cables should be equipped with pulse overvoltage limiters (surge
arresters), the grounding terminals of which should be connected through a low-impedance
connection to the main grounding plate of the building (see Point
When installing the tuner in the shack, do not connect antenna cables to the tuner if they
are entering the building directly, without being grounded through a low-impedance
connection to the main grounding plate of the building! Properly grounded antennas shall
be guided to the shack from the inside and from below, from the foundation of the
building and its main grounding plate rather than directly from outside! (see Point
Appendix 1).
Page 16 of 72 | S e c t i o n GENERAL INFORMATION
User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
DANGER
APPENDIX 1 | Lightning Protection
in Appendix 1).
9)
DANGER
at the end of
in Appendix 1).
8)
in Appendix 1).
8)
in
8)
May 2021
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