HXGN □ -12 box-type fixed AC metal-enclosed ring network switchgear (hereinafter referred to as ring network cabinet) is a new type of metal-enclosed box-type switchgear designed and developed by our factory. Its performance meets the standards of GB3906-91 “3-35kV AC metal-enclosed switchgear” and IEC298 “AC metal-enclosed switchgear and control equipment” (1981 edition), and meets the requirements of the “five defenses” proposed by the two departments. This switchgear has the characteristics of small size, light weight, flexible combination, small operation force, convenient use and maintenance, and no fire and explosion.