Post insulator for a gas-insulated, high-voltage switching installation

摘要

An insulator support (10) comprises a body (12) made of molded insulating resin, and a fixing flange (14) made of metal annular, surrounding the periphery of the body (12) at the opposite end of the carrier member (16) of the high voltage wiring. & br / the fixing flange (14) comprises a tapping hole (22) for the introduction of the resin during the molding of the insulating body (12), and two inner faces (28, 30) located under the tapping hole (22), and each equipped with a groove (32, 34) for receiving a seal (18, 20) tonic overmolded, intended to ensure simultaneously a blocking effect of the flange (14) with respect to the body (12), and an additional seal at the level of the interface is delimited by the flange (14) and the body (12).