DEVELOPMENT OF SOLID INSULATED SWITCHGEAR FOR MEDIUM VOLTAGE

Because of SF6 gases excellent electrical insulating characteristic, they are widely used on electrical equipments as insulating materials for medium voltage and high voltage class. However, these kinds of gases should be controlled to use on electrical equipments for reducing environment pollution. And eco friendly products like epoxy are proved to some extents can replace SF6 gas and also show high level insulating abilities. Nowadays many companies make efforts to use epoxy on their electrical products such as VCB and switchgears. This paper introduces a kind of epoxy moulded Solid Insulated Switchgear (SIS) for medium voltage class on distribution system in Korea, for the purpose of replacing some parts of gas insulating switchgears (GIS) for Korean Electrical Power Corporation (KEPCO).