This product is one kind protecting equipment preventing electric equipments in AC power system from high voltage and over-votage operation.Under normal working voltage, the current passing arrest 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.
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