Earth Resistance

Lightning Protection Systems

Lightning consists of an electric discharge in a long air-gap involving an electrostatic phenomenon of breakdown of the air between cloud and earth. In this case, it is clear that an enormous voltage is involved, which means a huge amount of energy.

Characteristics of Lightning Discharges

Lightning is mostly a consequence of the development of a convective weather system to a certain magnitude, with strong links to the development of discharge processes within the system. An air volume can be uplifted in an unstable convective condition, taking part in the development of cumulonimbus.

The Understanding of Lightning Discharge Mechanisms

Every day, an average of around 8 million lightning strikes discharges over the earth, which is the equivalent of about 100 lightning bolts that strike the Earth’s surface every second. Lightning detection and monitoring are very important to improve public safety, warn of potential wildfires, and protect electrical systems.

Reduction of Earthing Resistance

A requirement is to ensure that buildings are provided with lightning and surge protection systems in accordance with national and international standards. There are a large number of ways in which lightning and surges can interact with electronic equipment

Resistance and Impedance of Earthing Systems

Effective earthing system is essential to ensure the safety of people and reliable operation of the whole group of electrical installation.

Measurement Guide for Soil Electrical Resistivity

Soil electrical resistivity represents a key factor in the design of appropriate earthing systems because of its direct proportionality with the earthing resistance.

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