Monolithic insulating bushing

摘要

Insulating bushing in which the external insulating casing consists of a single monolithic insulating tube (27) on which the flange (28), the upper insulating ring (26) and a lower electrode (29) are assembled by gluing. This obviates the use of intermediate seals required by the prior art in which the insulating casing is made in a plurality of pieces, these seals being a possible source of leakage. The whole assembly is more resistant to mechanical stresses caused by seismic events or internal short circuits; it is also safer, lighter and more economical. <IMAGE>