Evolution Of Solid Insulation Technology For Epoxy Resin Insulators: From Single Components To Integrated Modules

The trend towards highly compact power equipment is reshaping the design logic of components. In the traditional model, high voltage epoxy resin mainly undertakes the single responsibility of providing support and electrical isolation. Now, this boundary is blurring, and product forms are beginning to evolve towards internal core components with multifunctional attributes.

Structural Reorganization through Integrated Design

The industry's technological approach is iterating from "split assembly" to "modular molding." This shift is not simply about volume reduction, but rather about directly encapsulating functional components such as current transformers, sensors, or switch contacts within a resin matrix.

• Functional Integration: The internal shielding structure and insulation body are integrated into a single casting process.

• Standardized Interfaces: Modular components can adapt to various cabinet layouts, reducing the need for secondary processing.

• Space Utilization: By optimizing the electric field distribution design, the overall footprint of the equipment is reduced.

The transformation towards precision manufacturing processes

Higher requirements have been placed on the machining accuracy of the high voltage standoff in production. The maturity of automated pressure gelation (APG) technology has made modular production of complex geometries possible. The precision of mold design directly determines the uniformity of the electric field within the module.

In high-voltage vacuum ring main units or modular substations, these integrated components have replaced the previously scattered supporting parts. This structural leap has shortened the assembly cycle of power equipment. With the increasing intelligence of power distribution networks, the application of embedded sensing technology has given insulation components sensing capabilities, further driving the comprehensive evolution towards intelligent modules.