High Vacuum Transformer Oil Purifier for Power Transformer Maintenance

VFD Series of signal and double stage high-efficient vacuum oil purifier is to remove free and dissolved water, gases, and mechanical impurities from insulating oils so as to ensure its purity and improve its insulation property. It is suitable for the application to oil treatment 500KV super-voltage transforming equipment and 220KV transformers. It is also suitable for the treatment of capacitor oil, transformer oil and freezer oil.

• VF series - Single-Stage Vacuum Transformer oil purifier machine
• VFD series - Double-Stage Vacuum Insulation Oil Filtration Machine
• VFD-R series - Double-Stage Vacuum Black Insulation Oil Regeneration Filtration Machine

• Doubles the evaporation area by adopting Huazheng horizontal double vacuum separation technology efficiently and reliability thorough removal of gas in the oil by using coalescing oil spray separator
• Adoption of American fine filter element, fineness: 5μm, ß≥1000
• Low noise and long life of the oil transport system
• Adoption of American heating technique with the way of thermal radiation, constant temperature control
• The use of float valve and photoelectric oil level control, eliminates supervision
• Adoption of French de-foaming technique to avoid oil leaking
• Controlled digitally and automatically by PLC
• Major electric apparatus are imported from America, so the controlling system safe and reliabl

  Item	Before	After
  Water Content	50-100ppm	≤4ppm
  Gas Content	High	≤0.1%
  Particle Size	>25μm	≤5μm
  Breakdown Voltage	35-45kV	≥75kV

• Normal appearance type, shelf-covering type and explosion-proof type. For last the lifetime of the machine
• Fixing type, mobile type with four wheels and mobile type with trailer. You can use is at every place as you need
• The color can be customized as you required

• TF series oil purifier: Turbine oil purifier system is particularly suitable for purifying turbine lubricating oil. It also applies to treat hydraulic, coolant oil and other lubrication in which contain large of water, vapor, impurities, sludge, dielectric and colloid.
• LV series oil purifier: Lubrication Oil Filter System are suitable especially for purifying and restoring hydraulic oil, machine oil, coolant oil and various other lubrication oil.
• GER series oil purifier: Used oil regeneration system is suitable to regenerate used internal-combustion engine oil including diesel engine oil, gasoline engine oil, and used hydraulic oil, other used lubrication oil of machinery.
• GED series oil purifier: it is used to recycle all kinds of waste oil into base oil or diesel oil with high quality.

Frequently Asked Questions

Can the machine work online?

Yes.

Can it process energized transformers?

Yes, optional online filtration available.

What transformer voltage level is suitable?

11kV to 1000kV.

How long does oil purification take?

Depends on oil condition and flow rate.

What certifications do you have?

ISO, CE.

Can you customize voltage?

220V, 380V, 415V, 440V, 460V available.

Why Transformer Oil Purification Matters

Contaminated transformer oil can cause:

• Reduced dielectric strength
• Internal arcing
• Transformer overheating
• Insulation aging
• Unexpected power outages

Regular oil purification helps:

• Extend transformer life
• Reduce maintenance costs
• Improve electrical reliability
• Avoid transformer replacement

Customer Case – 220kV Substation

Location: 

Transformer Capacity: 50MVA

Problem:

• Water contamination
• Low dielectric strength

Result:

• Moisture reduced to 3ppm
• Breakdown voltage increased from 42kV to 78kV
• Transformer returned to service