ZJA Double Stage Transformer Oil Filtration Machine

  • ZJA double stage transformer oil filtration machine‘s purpose is to filter impurities in waste transformer oil.
  • Enhances transformer oil properties for 66KV to 500KV power transmission projects.
  • Removes trace water, gas, and particulate matter from insulating oil.
  • Improves the performance of transformers, circuit breakers, mutual inductors, cables, and capacitors.
  • Components all rely on an insulation system.

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Features of Transformer Oil Filtration Machine

  1. Used in the electric power system (66kV~500KV).
  2. Features include a high working vacuum, fast oil filtering, and sound oil protection.
  3. Suitable for oil treatment, vacuum oil injection, and cyclic hot oil drying in the installation and maintenance of large capacity transformers. 
  4. As a powerful oil purifier manufacturer, YUNENG can produce various kinds of oil purification units and has been committed to providing you with the best service.

Transformer Oil Filtration Machine Specification

Item Parameter Type Unit ZJA1.8KY ZJA3KY ZJA6KY ZJA9KY ZJA12KY ZJA18KY
Technical Parameter Flow Rate L/H 1800 3000 6000 9000 12000 18000
Working Vacuity Pa ≤80
Working Pressure Mpa ≤0.35
Temperature Range oC 45-65
Power Supply 50Hz    380V    3-Phase 4-Wire  (or as requested)
Total Power KW 16 36 70 100 150 200
Inlet/Outlet Diameter DN 20/20 25/25 32/32 40/40 50/50 65/65
Size Length Cm 160 180 220 250 280 345
Width Cm 125 145 160 195 215 260
Height Cm 200 220 245 270 300 300
Weight Kg 650 900 1200 1600 2200 3000

The ZJA transformer oil filtration machine is also known as the “Transformer Oil Centrifuging Machine” in Bangladesh.

Transformer Oil Filtration Machine Layout

ZJA-BO transformer oil online regeneration equipment (including oil filter)

Applications of Transformer Oil Filtration Machine

ZJA Series high vacuum transformer oil filter machine is mainly used in the power industry, power stations, power companies, metallurgy, chemical machinery, transportation, railways, and other industries. It is used to filter the oils such as transformer oil, and imported oil.

  • Oil filtration can be performed on-site.
  • Vacuum dry damp electrical equipment.
  • Vacuum the newly installed or overhauled transformer, and carry out vacuum oil injection at the same time.

How Does ZJA Double Stage Transformer Oil Filtration Machine Work?

ZJA series flow diagram
  1. The process begins with the oil passing through a pre-filter and entering a heating unit.
  2. Inside the vacuum separator, the heated oil undergoes separation, with a vacuum pump and roots pump at work.
  3. Subsequently, the root pump directs the oil to the condenser, while water vapor molecules are drawn into a water receiver.
  4. Through a secondary filter and fine filter, the oil is processed as it exits the oil pump.
  5. The steps in the operation include:
    • Creating a vacuum by expelling air from the vacuum tank with the vacuum pump.
    • External oil enters the primary filter via the oil inlet pipe, where larger particles are removed.
    • Heating the oil to 45~65℃ in the heating tank before automatic oil float valve regulation.
    • The rapid rotation of the jet wing separates the heated oil into a semi-mist, causing water in the oil to evaporate into vapor, which is then drawn into the condenser by the vacuum pump.
    • Cooling the water vapor in the condenser, results in its conversion back to water and release.
    • Discharging the oil in the vacuum degassing and dehydration chamber through the oil discharge pump, with fine particulate impurities being filtered out by a fine filter.

Why We Need Transformer Oil Filtration Machine?

  • The transformer oil will be aged or polluted after running for a period of time, and mechanical impurities, moisture, gas, etc. will enter the transformer oil.
  • Both new oil and transformer oil after a period of use need to be filtered. At this time, the role of the transformer oil filtration machine is reflected. The equipment can effectively remove water, gas, suspended impurities, precipitated impurities, etc. from inferior transformer oil.
  • It can filter and purify the inferior transformer oil and switch oil, improve the oil quality, and restore the viscosity, flash point, and service performance of the lubricating oil, so as to ensure the normal operation of the transformer system.

Oil Data After Filtration

Item Type Unit Guarantee indexes
Breakdown Voltage KV ≥70 (Spherical electrodes)
Water Content ppm ≤5
Gas Content % ≤0.3
Filtering Accuracy μm 1

What are the Advantages of the Transformer Oil Filtration Machine?

This high vacuum transformer oil filter machine offers several advantages when it comes to filtering waste oil.

  1. It utilizes vacuum separation technology, enabling a vacuum degassing separation process. This technology effectively doubles the evaporation area and extends the oil’s residence time in the vacuum chamber. As a result, it enhances the quality and reliability of the filtered oil.
  2. Enhances the interaction between water and gas molecules, achieving multiple vacuum cycles.
  3. Equipped with a vacuum pump precooler, which reduces water intake into the vacuum pump.
  4. Decrease the frequency of vacuum pump oil replacement and prolong the vacuum pump’s lifespan.
  5. Heating and high vacuum quickly remove water from oil due to the lowered boiling point of water in oil under high vacuum conditions.
  6. Remove impurities from the oil, and achieve the goal of oil purification.

Can You Provide the Portable Transformer Oil Filtration Machine?

  • Of course, we can provide portable high vacuum transformer oil filter machines, open-type, or closed-type. You can choose according to your usage environment.
  • The portable transformer oil filtration machine is mounted on a trailer and can be easily moved on or off-highway and transferred to any work point you need. It can solve the problem of transformer oil filtration under various conditions for you.
Transformer Oil Filtration Unit

Choose a Reliable Transformer Oil Filtration Machine Manufacturers

YUNENG is an experienced transformer oil filtration machine manufacturer, you can contact us for inquiries. Various types of industrial transformer oil filter machines for sale can be produced. It is mostly used in industrial and mining enterprises such as power companies, power plants, power stations, metallurgy, railways, petrochemicals, etc. Our pre-sales customer service staff and after-sales customer service staff will reply to you as quickly as possible.


Rich Experience

Leading manufacturer in industrial oil and gas treatment with more than 25 years experiences.

Tailored Design

Specializes in making your systems suit your needs & requirements. Every system is custom engineered & custom designed. 

Professional Technical Team

Professional pre-sales, in-sale and after-sales service team to meat customer’s requirement

Reliable Quality, Durable System

Top-quality components and workmanship ensure high performance