The non-adhesive technology is used for ultra/high voltage large capacity transformers, which changes the shape of lead electrodes, reduces the concentration of electric field, increases the safety factor, and effectively solves the problem of high voltage winding structure of ultra/high voltage capacity transformers.

The UHV AC transformer's integrated insulation lead-out device is a specialized wiring solution for high-voltage, large-capacity transformers, featuring single-phase three-column and three-phase three-column parallel configurations. This system incorporates a voltage balancing tube penetrating the winding leads, with a balancing sphere positioned between the tube and terminal bushing. Both components are housed within the balancing sphere and connected through fastening devices. The outer paper-insulated tube surrounding the high-voltage leads ensures uniform electric field distribution, optimizes lead electrode configuration, reduces electric field concentration, enhances safety margins, and effectively resolves structural challenges in high-voltage winding leads for large-capacity transformers.