ZnO lighting arrester is one kind most world advanced over-voltage protector at present. Due to its core components of resistance applying ZnO and other metal oxide to make of, comparing with traditional carborundum arrester. It Improves greatly V-A characteristics of Resistance, increases the getting through ability of resistance, thereby it brings fundamental change to features of arrester.
Under normal working voltage, the current passing arrester only A class, when bearing over voltage, the excellent non-linear V-A features of arrester would make effect , the current passing through the arrester increase high to thousands of Ampere instant, the arrester is under getting through state, to release over-voltage energy, therefore it effective limits the damage to power transmission equipments due to over voltage.