An earthing system is a need in any electrical system to protect from the adverse effects of lightning, Leakage currents, insulation failures, short circuiting and other faults. A reliable earthing system with short, direct and low resistive path ensures protecting people, equipment, structure and environment by dissipating fault currents that are of high magnitude and impulsive rise times. Earthing systems are designed as per the requirement of electrical systems and applications, though the principle remains the same, conductors, devices, type of connections varies for different applications such as power stations, overhead transmission systems, consumer power networks.
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