Thyrite Lightning Arrester and Over-Voltages | Electrical Engineering
Thyrite arrester is most common and is mostly used for the protection against high dangerous voltages. It operates on the fact that thyrite, a dense inorganic compound of ceramic nature, has high resistance decreasing rapidly from high value to low value for currents of low value to those of high value. The current increases 9.6 times on doubling the voltage. [...]