(Protector)Over-voltage protector series First clause: Implication condition Three-phase combination-type composite outer cover protector for AC owns super protecting capability, which can be used to protect AC electrical equipment from voltage impairment. One set of three-phase combination-type protector could substitute for six sets of normal oxide zinc arrester to achieve the effect that protecting electric equipment from damage from operation over-voltage of alternated or related to land, which cant be replaced by normal oxide zinc arrester. This product is divided into indoor and outdoor type, it could vastly implied to protecting power plant substation rotation electrical machine wires and other AC equipment, additionally, the product also is used to protect condenser group electrical steelmaking furnace, it can be chose between using it separately and using together with other equipment inside electric distribution case. We are a leading manufacturer and exporter of various kinds of lightning arrester(Metal oxide), composite insulator, fall-type fuse and isolation knife, over-voltage protector, resistance slice, Discharging counter etc. If you are interested in our products, please do not hesitate to contact us. We will consider to give you any information for the produts. Thanks!