transformer oil filtration
transformer oil filtration machine
transformer oil filtration machine price
transformer oil filtration machine manufacturer
transformer oil filtration system
transformer filtration machine
transformer oil filtration
transformer oil filtration machine
transformer oil filtration machine price
transformer oil filtration machine manufacturer
transformer oil filtration system
transformer filtration machine

ZJB Single Stage Vacuum Transformer Oil Filtration Machine

  1. The ever-increasing voltages and ratings of modern transformers and electrical equipment have led to greater electrical stress in insulating materials and fluids. To cope with these greater pressures, transformer oils with higher dielectric quality are required, and the residual moisture in the insulator must be kept low.
  2. In order to process and purify the insulating oil, a transformer oil filtration machine is required for filtration. Insulating oil filtration is the process of removing particles and moisture from transformer oil.
  3. As a professional transformer oil filtration machine manufacturer, Yuneng has professional oil filtration technology. The transformer oil purification machine can effectively remove the free water, dust and other solid particles in the transformer oil, and improve the cleanliness of the insulating oil. While removing impurities, the original properties of the pressure-swing oil are retained, and other additives and functions in the oil are not damaged.

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Application of Transformer Oil Filtration Machine

  • For small transformers, ZJB single-stage vacuum transformer oil filtration plant is specially designed to remove pollutants, such as particles, water, gas, etc.
  • Dissolved gases in transformer oil can cause arcing, corona discharge, and overheating, reducing the electrical efficiency and life of the transformer. Similarly, water pollution down to 30 ppm (parts per million) can adversely affect the insulation strength of oil. With the continuous improvement of energy efficiency standards for distribution transformers, the need for effective degassing will become increasingly important in the future. Particle contamination can also affect the function of the insulating oil.


Therefore Yuneng single-stage transformer oil filtration system is the best solution to clean the used transformer oil.


Advantages of Transformer Oil Filtration System

  1. Small and compact structure
  2. With competitive price but high running performance
  3. Improve oil quality and extend the transformer life span
  4. Simple operation and reduce machine maintenance cost


Product Working Principle

  • To purify oil under the action of negative pressure from the oil inlet valve into the primary filter to filter out the larger particles of impurities, heating the oil by the heater to the set temperature(controlled by the automatic constant temperature digital display temperature controller). 
  • The heated oil into the vacuum chamber and be atomized by the atomized spray, step by step in the efficient separation tower form developed area a great deal of oil film. 
  • Under the vacuum rapid evaporation to realize the separation of oil, water in and gas. 
  • The isolated oil by special oil transfer pump pumping out and go to the fine filter to remove the mechanical particles for completing a purification cycle. 
  • Depending on the crude oil condition, one to three times oil purification circulation can achieve the requirement.


Parameter of Transformer Oil Filtration Machine

ZJB Series Transformer Oil Filtration Machine
Item Name of  Parameter Unit ZJB0.42KY ZJB0.9KY ZJB1.8KY ZJB3KY ZJB6KY ZJB9KY
Technical parameter of the equipment Flow rate L/min 7 15 30 50 100 150
Limit vacuity Pa ≤90
Working vacuity Pa ≤666
Working pressure Mpa ≤0.5
Temperature range 45-65
Power supply   As per buyer's option
Total electric power kW 4.1 10.5 13.5 34 67 97
Inlet/outlet diameter mm 15 / 15 15 / 15 20 / 20 25 / 25 32/32 50/ 50
Size Length cm 65 110 130 150 175 215
Width cm 50 850 110 120 120 160
Height cm 90 1400 150 180 235 260
Weight kg 120 200 310 560 680 1200
Oil treatment index Breakdown voltage kV ≥55 (Spherical Electrodes)
Water content ppm ≤10
Gas content % ≤1
Filtration accuracy µm ≤1~3

*The machine size and weight will change slightly due to different configurations.


Product Working Flow

To be treated oil storage equipment Oil inlet Oil inlet valve Primary filter Solenoid valve Heater Vacuum separation chamber (two ways):

  • Vapor → Condenser  Vacuum pump PV4.1 Air;
  • Clean Oil 1st stage Atomizer 1st stage separation tower Oil outlet pump Fine filter Oil outlet valve Oil outlet To be treated oil storage equipment.


Product Images


Over the past two decades, Yuneng Oil Purifier has always stuck to the operational concept of "being faithful and dedicated, practical in development, and cooperative for common progress". If you have any questions or needs about our transformer oil filtration systems, please feel free to contact us.

Project Photos



1. 20,000L/h Transformer Oil Purifier at TBEA Shengyang Factory. 

2. 4320m³/h Vacuum Pumping Unit at the Site of ±800kV Converter Station.

3. 200m³/h Dry Air Generator at the Site of 800kV Qingzhou Converter Station.

4. 1020L/h Precision Oil Purifier and Oiling Machine for Australia Client.

5. 60m³/h SF6 Gas Recovery at the Site of Guangzhou Converter Station.

6. 3 Units of 12000L/h Transformer Oil Purifiers in Pakistan.


Packaging & Shipping

To be packed in iron case or wooden case (s) for long distance (ocean/air) transportation.  



After-Sales Service

● One year guarantee for product quality(People damaged parts are charged).     

● Lifelong maintenance and spare parts supply.

● Free design of fixtures as customers required.

● Free training for machines installation and operation of the staff at factory.