IMPROVEMENTS IN INSULATING BUSHING APPLIED IN POWER TRANSFORMER

摘要

it is an insulating bushing (10) applied to a power transformer (tp), particularly at the voltage input of the primary network, said bushing (10) is comprised of a monoblock body (20) where the upper insulating screw (30) is mounted ), conductor (40), in addition to locking nuts and washers (50), in which the body (20) is made of insulating material, preferably epoxy resin, and is configured by threaded sector (21) aligned with a flange (22) ) whose lower face is provided with an annular recess (22a) for the assembly of a sealing o-ring (av), which enables the sealing of the internal insulating oil contained in the power transformer (tp), with the said threaded sector (21) receives threaded clamping flange (60), preferably made of epoxy resin and whose clamping promotes the fixation of the bushing (10) next to the transformer (tp), and said flange (60) provides for a recess in the discoid portion ( 61) in order to compose a cradle to accommodate a discoid step (22b) provided in said flange (22), as well as, the thread portion (62) of said flange (60) provides threaded transverse hole (62a) for the assembly of locking screw (p1).