Sulfur hexafluoride tank-type metal oxide surge arrester without gap (GIS arrester) applies to 66kV ~ 220kV gas-insulated metal-enclosed switchgear and controlgear to protect their insulators from being damaged by over-voltage. The arrester performance meets the requirements of GB11032 and IEC60099-4. The arrester is accessible to top, side and bottom wiring methods, as well as single-phase-in-one-tank, three-phase-in-one-tank and other structures. According to the demands of the customers, it can also be set with RS485 communication interface to transmit, save, edit or print the information and data stored in the host computer, realizing remote monitoring and meeting the requirements of unattended operation. It has passed the comprehensive type test of the National Quality Supervision and Inspection Center of Insulators & Surge Arresters. Featured by reasonable structure and reliable performance, the product is widely used in key domestic projects, such as: 110kV Booster Station in Gonghe County (Hainan, Qinghai), 110kV Substation of Meiming Metal Materials Branch of Suqian Xiangxiang Industrial Co., Ltd., 110kV Chating Substation of Beihai Power Supply Bureau, 110kV Substation of Taizhou Chengda Jinggong New Materials Co., Ltd., 110kV Substation in Dahanhao Village, Dongsheng District, Inner Mongolia, 110kV Substation of Jiangsu Sihong Shuanggou Liquor Co., Ltd., 110kV Substation of Inner Mongolia Bayannur Project, 110kV Substation of Mengguqiao Hydropower Plant in Aba, Sichuan, South-to-North Water Diversion Project and other key national projects.