Selection Of Upper And Lower Outlets Of Solid-sealed Poles

Due to the requirements of the Embedded Pole structure, the upper and lower outlets have complex shapes and are encapsulated in epoxy resin. The design should consider the requirements for the combination of the upper and lower outlets with epoxy resin, increase the arc transition, reduce the shape mutation and sharp corners, and avoid the internal stress concentration after the epoxy resin solidifies and causes product cracking. At the same time, the surface of the upper and lower outlets in contact with the epoxy resin is sandblasted to increase the interface bonding with the epoxy resin and avoid the formation of cavities between the interfaces, which affects the insulation and partial discharge level of the product and even causes product cracking.