1. Ultimate Vacuum Evacuation Logic: Eliminating "Electrical Weak Points" within Windings

When processing large 2000mm stators or high-voltage transformer coils, the density of the insulation structure directly impacts the partial discharge performance. The VPI2000 system is equipped with a two-stage high-efficiency vacuum unit consisting of rotary vane and Roots pumps, achieving an ultimate vacuum degree of ≤100Pa. This extreme low-pressure environment rapidly exhausts all air and residual moisture within the Φ2000 × 2000mm impregnation tank and deep within the coil windings. Through this parametric vacuum treatment, the equipment eliminates the possibility of bubble formation at a physical level, creating ideal conditions for subsequent unobstructed resin saturation.

2. Pressure-Compensated Penetration: Achieving Dense Encapsulation under 1.0MPa Load

Gravity or atmospheric dipping alone cannot meet the insulation challenges of tight windings. After vacuum filling, the VPI2000 applies a design pressure of up to 1.0MPa via its pressure vessel system designed according to national standards. Under this continuous and stable pressure load, the insulating resin is forced into the deepest micropores and crevices of the coils, reaching a superior fill rate. This process not only elevates the mechanical strength of the component to a new dimension but also significantly enhances the moisture, mold, and pollution resistance of the motor, ensuring a stable insulation class even in extreme industrial environments.

3. Digital Process Monitoring and Thermal Stability

To safeguard the chemical activity of large volumes of resin, the VPI2000 integrates digital thermal management logic into its storage system. The inner chamber is fabricated from 1.5mm stainless steel, paired with an advanced refrigeration unit and PT100 temperature sensors to ensure the resin remains within its optimal process temperature range. All operational parameters—including the ≤100Pa vacuum curve and pressure fluctuations—are recorded in real-time by the PLC automated control system and monitored via a 21-inch LCD screen. This high level of automation reduces uncertainties from manual intervention, providing motor service centers and manufacturing hubs with traceable and verifiable insulation quality assurance.