GKG-12/630 Overview of solid insulated switchgear (Miniaturized mining switchgear) : It is a new type of power distribution equipment which integrates three technologies of external solid seal, insulated bus bar and miniaturization of combined unit. The switch and high-voltage live parts are cast with epoxy resin as a whole, and epoxy resin solid seal is used as the insulation of live body to ground and phase to phase. Solid insulated ring cabinet does not discharge any toxic substances, no gas leakage explosion and internal arc of the hidden danger, with high insulation performance, high overall strength, maintenance-free and so on. According to different configurations, the solid insulated ring network cabinet can realize the functions of breaking load current, breaking short circuit current, manual and automatic switching of dual power input line, current velocity breaking protection, single-phase grounding protection of small current grounding system, and communication. The structure and principle of solid insulated ring network cabinet: 1.The composition of solid insulated ring network cabinet: V unit (Circuit breaker unit) C unit (Load switching unit) F unit (Combined electrical unit)