The SDC15-12 fully insulated compact switchgear adopts fully insulated SF6 gas switchgear components (SF6 gas ring main unit) carefully designed according to ISO/IEC standards, with large safety margin and modularity. It adopts advanced digital control technology to protect electrical equipment such as lines, transformers, and switches, and has a complete automatic device and monitoring system that can automatically complete functions such as fault location, isolation, locking, switching, alarm, and recording.