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Elpress Deep earthing System without conductor joints

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An earth electrode is a conductor placed in the soil, with the purpose of discharging electric current from a connected facility.

 Principle
An earthing electrode consisting of a copper wire that is driven down by a system consisting of an 0.8 metre long steel leading rod with a hardened steel tip at the end, and extension rods, that pave the way for the earthing electrode to be buried in the soil.
The earthing resistance is continuously measured at one end of the electrode wire, and when a suitable value is obtained, the driving process is stopped and the last extension rod is pulled out. Driving is done with the aid of a power hammer with a suitably adapted driving stud or with a sledgehammer and driving cap.

Advantages
• no jointing of the earthing electrode or earthing wire
• large cross-sectional area: 16-95 mm²
• can be used for different types of wire
• corrosion-resistant - very long life
• control to prevent the wire and tip striking against rock
• possibility to continually measure the grounding resistance
• few parts, making driving uncomplicated and operationally reliable
• low cost and weight compared to other systems
Elpress Deep Earthing System
Elpress Deep Earthing System.



Why earthing?
As a power supplier you must have approved earthing of your equipment. This means that over-voltages that may arise for various reasons are conducted to earth so that they do not cause damage.





Approved earthing should have:

    1. low electrical resistance

    2. the capability of conducting voltages away in a stable manner, whatever the weather conditions

    3. a long life, i.e. good corrosion resistance

Elpress Deep earthing has great advantages, both as a technical and economic solution, relative to surface earthing. Current transmission takes place in the soil by means of electrolytic processes, known as ion conduction.

The electrical characteristics of the soil depend on the proportion of salt water that is held by means of capillary forces and osmotic pressure in the pores between sand grains and in hygroscopic humus particles (e.g. clay). Water in deeper ground levels usually has a higher salt level than surface water.

Damp and cold
Low levels of damp in the soil, and cold (frost) considerably reduce the electrical conductivity of the ground. The most efficient earthing is achieved when the electrode is placed deep enough not to be affected by changes in the ground dampness and temperature.


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Elpress Deep Earthing System
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Etech Components, Unit 14 Park Court, Sherdley Business Park, Sullivans Way, St.Helens, Merseyside, WA9 5GZ