This Application Note discusses practical design of earthing electrodes, including the calculation of the earthing resistance for various electrode configurations, the materials used for electrodes and their corrosion performance. Equations are given for many common electrode geometries, including horizontal strips, rods, meshes, cable screens, and foundations.
Despite the fact that these formula are derived under the false assumption that soil is boundless and homogenous and ignore the fact that the ground resistivity changes with moisture content, the obtained values, although approximate, are useful in predicting and optimizing performance.
Application Note Author & Publisher: Leonardo ENERGY
| Earthing Systems: Basic Constructional Aspects |
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