Patent ID: 11881330
Assignee: HITACHI ENERGY LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. An electrical bushing, comprising:
a flange comprising a lower part and an upper part affixed to one another, and
a core surrounded by the flange,
wherein:
the flange is affixed to the core by a locking compound disposed in a volume of a joint between the flange and the core, and the volume of the joint further comprises a compressible material, the compressible material being configured to compress or expand in response to a change in the volume of the joint,
wherein the core has a first section with a diameter that is larger than a diameter of a second section and a diameter of a third section,
wherein the first section is arranged between the second section and the third section along an axial direction of the bushing, wherein the flange forms a seat for a first transition between the first section and the second section and wherein the volume of the joint is delimited by a second transition between the first section and the third section,
wherein the seat is located at the lower part of the flange and the joint is located at least in part at the upper part of the flange or vice versa,
wherein the compressible material comprises at least one of: an elastomer, a gel, a compressible filler, expancels, and
wherein the locking compound is an Epoxy-type resin, an Epoxy-type adhesive, a Silicone-type adhesive or a Polyurethane-type adhesive.