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Lightning protection systems. Lightning can easily damage a number of different building materials, and the large electrical currents can cause fires within the interior or even side flashes. Side flashes are small explosions of highly pressurized, super-heated air that occur inside the nooks and crannies of structure materials.
Protection core. ï¶A protection core is designed to transform a distortion-free signal. even well into the overcurrent range. This enables the protective. relays to measure the fault current value accurately, even in very high. current conditions. ï¶Relays are required to perform in fault current type situations.