dry air generator
dry air generator for transformer
air drying equipment
transformer dry air generator
Yuneng dry air generator
dry air generator for transformer
dry air generator
dry air generator for transformer
air drying equipment
transformer dry air generator
Yuneng dry air generator
dry air generator for transformer

GF Transformer Dry Air Generator

  1. Our GF dry air generator for transformer is mainly used to quickly and effectively provide dry air for transformers and other industrial equipment. It uses an air compression system, refrigerated air drying system, adsorption drying system, air purification system and PLC control system.
  2. This air drying equipment and purification system use a low-pressure oil-free compression system and low-temperature condensed moisture removal technology, which can solve the problems of dirty oil caused by air, steam and dust.
  3. Yuneng's dry air machine has the characteristics of small size, lightweight, easy installation and operation, energy-saving and high reliability. This machine has a series of instant display instruments such as power supply voltage, outlet pressure, outlet dew point, outlet temperature, absorption stroke, etc., which is very convenient to manage.

Application of Dry Air Generator

  • Dry Air Generator For Transformer is suitable for supplying dry air that keeps the power equipment' inner parts from moisture in the maintenance of the transformer, reactor and other large power equipment.
  • This machine can ensure that the maintenance staff will not be short of oxygen when working inside of the equipment. It is more reliable economical convenient and safer than nitrogen. Therefore, it can shorten the maintenance period and improve the efficiency of maintenance quality.


Advantages of Dry Air Generator in the Electric Power Industry

  1. The dry air generator for transformer can show its unique advantages for large transformers and reactors in the power system.
  2. When the transformer is shipped from the factory, heavier insulating oil is pumped out and replaced with very light dry air, which reduces the transportation cost of large transformers.
  3. Due to a long time for overhaul and accident repair of a large transformer, sometimes more than half a month, if there is no absolutely dry air to fill the transformer around the clock, the transformer body will be seriously damp, and it will be seriously corroded. The insulation performance will be destroyed.
  4. The dry air generator manufactured by Yuneng Oil Purifier can ensure that the internal insulation of the transformer will not get wet during the maintenance process, and the maintenance personnel will not suffocate due to lack of oxygen when working inside the equipment. It is not affected by external climate change, avoiding the traditional transformer oil thermal cycle drying method, which can ensure the improvement of oil insulation performance and the reduction of moisture, and also ensure the personal safety of maintenance personnel.


Product Principle


Features of Transformer Dry Air Generator

  1. Air compressors can work continuously and reliably without worker’s supervision, diagnose fault and send alarming. It can restart automatically after power off.
  2. It adopts an advanced and reliable Microprogrammed Control Unit, it characterizes automatic timing, automatic switch of work.
  3. This unit has a series of immediate display instruments such as power voltage, outlet air pressure, outlet air dew point, outlet air temperature, and absorption tour pressure, so it is very convenient for management.
  4. It is an integrated design, you can choose PLC to check parameters automatically.
  5. It is easy to operate, safe and reliable to use, it can save energy.


Transformer Dry Air Generator Flow Chart

Transformer Dry Air Generator Flow Chart


Parameter of Dry Air Machine

GF Series Dry Air Generator
Item Name of  Parameter Unit GF-50 GF-100 GF-150 GF-200 GF-360 GF-480
Technical parameter of the equipment Flow m³/h 50 100 150 200 360 480
Working pressure Mpa 0.6~0.8
Pressure drop Mpa 0.05
Noise dB(A) ≤80
Working power   (380V-50Hz) 3Phase 4 Wires, or as per buyer's option
Total electric power kW 17 17 22 25 48 58
Size Length cm 230 230 230 230 320 320
Width cm 170 170 170 170 225 225
Height cm 235 235 235 235 240 240
Outlet pipe DN 40/50 40/50 40/50 40/50 40/50 40/50
Weight Kg 1200 1450 1600 1600 1900 2200
Air treatment index Air outlet pressure Mpa 0.02~0.04
Dew point -50 ~ -70
Impurity content μm 0.01
Oil content in air outlet ppm 0.01

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


Product Images

GF Transformer Dry Air Generator


In addition to dry air generator for transformer, we also provide transformer oil filtration machines, including single-stage and double-stage. Yuneng can produce 1,000 sets of oil purifier machines for other fluids every year. We are one of the world's competitive companies specializing in high-tech oil purifier research and manufacture. If you have any questions or needs for our products, 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.