Vacuum pressure impregnation equipment (VPI)

Vacuum pressure impregnation equipment (VPI) is an advanced process device, widely used in insulation treatment of electrical products such as motors, transformers and capacitors. It significantly enhances the electrical performance, mechanical strength and environmental resistance of the product by creating a vacuum and pressure environment to deeply penetrate the insulating material into the internal voids of the product.

The advantages of VPI equipment

Outstanding insulation performance: The VPI process can fully fill every tiny gap inside the product with insulating materials, effectively eliminating bubbles and defects, and forming a dense and uniform insulating layer, significantly enhancing the electrical strength, withstand voltage rating and partial discharge performance of the product.

Enhanced mechanical strength: After the insulating material is impregnated and cured, it can closely bond with the product body, forming a solid integral structure, effectively improving the mechanical strength, seismic performance and impact resistance of the product, and extending the service life of the product.

Outstanding environmental resistance: The VPI process can effectively prevent the invasion of harmful substances such as moisture, dust, and salt spray, enhancing the product's moisture-proof, mold-proof, and anti-corrosion performance, enabling it to operate stably in harsh environments.

High production efficiency: The VPI equipment adopts an automated control system, which can achieve batch production, improve production efficiency and reduce labor costs.

Environmental protection and energy conservation: The insulating materials used in the VPI process are environmentally friendly and non-toxic, and can be recycled, which conforms to the production concept of green environmental protection.

The main parameters of the VPI device

Vacuum degree: Can reach over 10^-3 Pa, ensuring that the internal air of the product is fully expelled.

Pressure range: Usually 0.4-0.8 MPa, which can be adjusted according to the requirements of different products.

Impregnation temperature: Set according to the characteristics of the insulating material, usually between 50 and 120℃.

Curing temperature and time: Set according to the curing characteristics of the insulating material to ensure full curing.

Equipment capacity: Different specifications of equipment can be selected according to production needs, ranging from small laboratory equipment to large industrial equipment.

The application industries of VPI equipment:

Motor industry: It is used for insulation treatment of motor stator, rotor, coil and other components to improve the efficiency, reliability and service life of the motor.

Transformer industry: It is used for insulation treatment of transformer coils, cores and other components, improving the insulation grade, short-circuit resistance and heat dissipation performance of transformers.

Capacitor industry: It is used for the impregnation treatment of capacitor cores to enhance the withstand voltage grade, capacity stability and service life of capacitors.

Other industries: It can also be applied to the insulation treatment of electrical products such as reactors, transformers, and high-voltage switches.

Reasons for choosing VPI equipment

Enhancing product quality: The VPI process can significantly improve the electrical performance, mechanical strength and environmental resistance of products, giving your products a more competitive edge in the market.

Reduce production costs: VPI equipment can achieve batch production, enhance production efficiency, lower labor costs, and at the same time, reduce material waste and lower production costs.

Extending product lifespan: The VPI process can effectively extend the service life of products, reduce the frequency of maintenance and replacement, and lower the long-term usage costs for users.

Meeting environmental protection requirements: The insulating materials used in the VPI process are environmentally friendly and non-toxic, and can be recycled, which conforms to the green and environmentally friendly production concept and meets increasingly strict environmental protection requirements.