550kV HGIS-Front View

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550kV HGIS-Front View


SF6 Hybrid Switchgear (Hybrid Gas Insulated metal-enclosed Switchgear, abbreviated as HGIS), also known as semi-enclosed compact switchgear. It first appeared in the late 1970s. It consists of dead tank circuit breakers, disconnectors, earthing switches, fast earthing switches, and current transformers etc.