A grounding kit (or earthing kit) can be described as a kind of lightning protector which avoids lightning punctures on cables. It is used for grounding /earthing

coaxial cable Coaxial cable, or coax (pronounced ), is a type of electrical cable consisting of an inner Electrical conductor, conductor surrounded by a concentric conducting Electromagnetic shielding, shield, with the two separated by a dielectric (Insulat ...

s of

copper Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orang ...

aluminium Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

on antenna installations for

telecommunication Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of ...

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mobile communication Mobile telephony is the provision of wireless telephone services to mobile phones, distinguishing it from fixed-location telephony provided via landline phones. Traditionally, telephony specifically refers to voice communication, though th ...

s).

Construction

Grounding kits / Earthing kits are composed of two main components, a clamp and a cable. The clamp will be screwed on a coaxial cable and in case of lightning strokes in the antenna installation, the voltage will be diverted over a ripple in the clamp with the combined cable and will be earthed / grounded by this way. The clamps of the grounding kits / earthing kits are composed of an

ozone Ozone () (or trioxygen) is an Inorganic compound, inorganic molecule with the chemical formula . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope , break ...

- and UV-resistant rubber coat with a device where the ripple can be lodged. The tin-plated ripple with a special

alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...

ing enables the bridging over big tolerances between kit and coaxial cable which is important for a best possible voltage transmission. The ripple to the skinned coaxial cable has a low contact resistance between 0.10 and 0.15 mΩ. It also enables a better length compensation as well as even and low contact pressures, which avoids damages on the coaxial cable. These characteristics are known as relaxation behaviour.

Assembly

For assembling a grounding kit / earthing kit with integrated cable lug the coaxial cable is skinned, the grounding kit / earthing kit is set and tightened by a screw.

References

* Wiesinger, Johannes; Blitzforschung und Blitzschutz (Lightning Research and Lightning Protection) / Johannes Wiesinger. - München .a.: Oldenbourg .a. 1972. - 87 S. : Ill., graph. Darst. - (Abhandlungen und Berichte / Deutsches Museum ; 1972,1/2) * Hasse, Peter; Wiesinger, Johannes; Handbuch für Blitzschutz und Erdung (Handbook for Lighting Protection and Earthing) (4.Auflage, 4 Edition): Pflaum Verlag, 1993 * Hasse, Peter; Wiesinger, Johannes; EMV Blitzschutzzonenkonzept (EMC Concept for Lighting Protection Areas) : Pflaum Verlag, 1994 {{DEFAULTSORT:Grounding Kit Telecommunications infrastructure