Innovation and breakthrough! Diamond-grid dispensing insulating paper (DDP) leads a new era of insulation technology for power equipment

As the core foundation for ensuring the safe, stable and efficient operation of power equipment, the technological innovation of insulating materials has attracted much attention. Today, its independently developed Diamond Dot Pattern Insulation Paper (DDP for short) has achieved large-scale production and successful application. With its revolutionary structure and performance, it has brought a revolutionary insulation solution to high-voltage electrical equipment such as transformers and reactors. It marks a major breakthrough for our country in the field of high-end insulating materials.

Technical core: Unique diamond-shaped dispensing structure, reshaping the boundaries of insulation performance

Traditional insulating paper mainly relies on uniform impregnation or coating processes, while the innovation of rhombic dot matrix insulating paper (DDP) lies in the precisely constructed micro-rhombic dot matrix adhesive layer on its surface. This unique design is achieved through cutting-edge automated dispensing technology, with the size, spacing and distribution of each dispensing dot precisely calculated and optimized. Its core advantages are reflected in:

Outstanding electrical insulation performance: The rhombic lattice structure can more effectively "lock" insulating oil (or resin), forming a stable and uniform composite insulation system. The dispensing area enhances the local dielectric strength, while the non-dispensing area ensures the full penetration and flow of insulating oil. Overall, it significantly increases the breakdown voltage, partial discharge initiation voltage and arc resistance of the product, providing a more reliable safety barrier for the equipment under extreme voltage conditions.

Optimized heat dissipation and mechanical performance: The rhombic lattice does not fully cover, retaining a large number of microchannels between the paper-based fibers, which greatly improves the circulation and fluidity of insulating oil (or cooling medium), thereby significantly enhancing the heat dissipation efficiency of the equipment, helping to reduce the operating temperature rise and extend the equipment's service life. Meanwhile, precise dispensing provides enhanced support at key positions, improving the mechanical strength and dimensional stability of the material, and enabling it to better adapt to mechanical stress during coil winding and thermal expansion and contraction during operation.

Enhance impregnation efficiency and process adaptability: The unique lattice structure guides the insulating impregnating agent to be oriented and penetrate rapidly, reducing the impregnation dead corners or bubbles that may occur in traditional materials, shortening the impregnation and drying time for equipment manufacturing, and improving production efficiency. It shows good compatibility with different impregnating agents (such as oil, epoxy resin, etc.) and has a wider process window.

Application value: Brings multi-dimensional improvements to power equipment

The successful application of rhombic dot adhesive insulating paper (DDP) has directly benefited the core equipment of the power industry chain:

Higher safety and reliability: It provides unprecedented insulation safety guarantees for key equipment such as ultra-high voltage, large power transformers, transformers in the new energy field (such as wind power and photovoltaic inverters), and traction transformers, reducing the risk of faults and ensuring the stability of the power grid.

Equipment compactness and energy efficiency improvement: With excellent insulation and heat dissipation performance, it allows for the design of more compact coil structures under the same insulation grade, or the pursuit of higher voltage levels and power densities under the same size, facilitating the miniaturization and lightweighting of equipment. Meanwhile, the optimized heat dissipation helps to reduce the operational wear and tear of the equipment and improve energy utilization efficiency.

Extending the service life of equipment: Better thermal management and mechanical stability slow down the aging rate of insulating materials, which is expected to significantly extend the service life of power equipment and reduce the maintenance and replacement costs throughout the entire life cycle.

Industry impact and Future outlook

The launch of rhombus dispensing insulating paper (DDP) not only fills a gap in the domestic high-end customized insulating materials field, but also holds strategic significance for promoting the technological upgrade of global power equipment and meeting the urgent demand for high-performance insulation in emerging fields such as smart grids, new energy grid integration, and the electrification of rail transit.