Insulator made of composite material intended for holding a switching chamber

摘要

The insulator (2) has two chambers (4, 6) and an external sleeve that are made of a composite material by helically winding a glass fiber filament. A winding angle of the filament constituting the external sleeve is smaller than a winding angle of glass fiber constituting the chambers while a winding angle of the filament constituting an interior sleeve is larger than the winding angle of the glass fiber constituting the chambers. The interior sleeve is placed inside the chambers, and the external sleeve is placed outside the chambers.