S urge Arrester, metal-oxide arrester limits the voltage across the insulation to a value below the insulator flashover voltage. Therefore, the lightning surge current is diverted to ground in a controlled manner and the insulation is left intact. The system works for direct lightning strokes to phase conductors and for backflash attributed to poor grounding and capacitive coupling.
ARRESTERS
Surge Arrester, metal-oxide arrester limits the voltage across the insulation to a value below the insulator flashover voltage. Therefore, the lightning surge current is diverted to ground in a controlled manner and the insulation is left intact. The system works for direct lightning strokes to phase conductors and for backflash attributed to poor grounding and capacitive coupling.