Restore Transformer Oil Dielectric Strength to ≥75kV On-site for 110kV–500kV Power Transformers

Remove water, gas and particles from insulation oil with double-stage high vacuum technology. Suitable for on-site maintenance of 110kV–500kV transformers.

Due to the highly hygroscopic nature of the transformer oil, it absorbs moisture from windings, which leads to gradual deterioration of dielectric strength. Also there are some waste impurities, gas contents in the transformer oil which destroy the oil’s quality.

Vacuum Transformer Oil Filtration Machine (Series VFD) is especially designed for on site use to completely regenerate insulating oils in energized or de-energized transformers even when transformer power both below and above 110KV and altitude over 500 meters, as well as purify mutual inductor oil, switch oil and so on. Also it can inject the insulating oil into the transformers on-line and dry the transformer.

High-Efficiency Mobile Transformer Oil Purifier — Double-Stage Vacuum, High Flow, Rapid Dehydration & Degassing

Key Advantages:

• Rapid Restoration of Insulating Oil Performance: Double-stage vacuum and high flow design quickly remove water and gases from oil, improving dielectric strength.
• Precise Impurity Removal: Unique multi-stage filtration system (FH trapezoidal network + high-polymer adsorption) effectively removes solids, dissolved water, and gases, ensuring long-term transformer stability.
• Zero Ethyne Residue: Carbon fiber infrared heating system ensures treated oil contains almost no ethyne, suitable for power equipment ≥110kV.
• Flexible Applications: Supports vacuum oil injection, hot oil circulation drying, and on-site drying; available in mobile trailer, hermetic, open-frame, or canopy-covered configurations.
• Automated Operation: Optional PLC full automation with automatic pressure protection, constant temperature control, and oil level monitoring, reducing operation difficulty and maintenance costs.
• On-Load & Off-Load Operation: Can operate under energized or de-energized conditions to meet various maintenance requirements.

Technical Highlights:

• Double-stage high vacuum evaporation & flash distillation technology
• Duplex 3D stereo-evaporation system for rapid removal of liquid water and gases
• Precise multi-stage filtration for trace water and impurities
• High-efficiency oil dehydration and degassing
• Equipped with transformer evacuation system and advanced dielectric condenser devices

Applications:

• Power transmission equipment ≥110kV
• On-site transformer oil injection & drying
• Power utility maintenance, substation service, and power plant transformer care

Take Action Now: Get a customized transformer oil purification solution and free technical recommendation for your site.

Results based on actual transformer oil treatment projects.

• Fixing type,mobile type with four wheels and mobile type with trailer.
• Normal appearance type,shelf-covering type and explosion-proof type.
• Avaliable in different color.

About us:

►We are the leading manufacture near 25 years experience and supply best quality and highest cost performance oil purification machines/tratamiento del aceite dieléctrico. Our oil purifier equipment are built by high quality raw materials with newest advanced technology by many skilled technicians and professional workers. We are honest to every customer and responsible for every machine we sold, we offer great after sales service, anytime when customer need us, no matter before or after purchase, we are available online or calling, to make a fast and instant response to customer.

►we practiced in this industry during all these years, and have rich on-site experiences too. Any on-site cases, please contact us for a solution.

►For detailed product specifications, please leave us your email or mobile no. To send you the catalog. Thank you.