ZJ Vacuum Drying Machine For High Voltage Electrical Transformer

  • The transformer vacuum drying machine is widely used in the installation and maintenance of various large transformers to achieve efficient vacuum drying and vacuum oiling. The device has the functions of fast air extraction, low energy consumption, LCD display and flexible movement. The leakage rate of the unit is less than 1%. The vacuum system is equipped with an anti-oil return device and a phase sequence automatic reversing system to prevent the vacuum pump from running in the reverse direction.
  • The vacuum drying of the transformer vacuum pump is fast in starting and pumping, so it is especially suitable for the Vacuum of transformers. 
  • In addition, it can be used for vacuum processing in vacuum metallurgy, welding, chemical, pharmaceutical, coatings and electronics industries.


Product Introduction

The transformer drying vacuum pump is suitable for vacuum drying and vacuum oil injecting for high voltage electrical transformer from 220kV-1000kV. And it adopts an air-cooled rotary vane vacuum pump and roots pump, the working vacuum degree is 50Pa, the maximum working vacuum degree can reach 10Pa, the ultimate vacuum degree is 1-3Pa. There is a combination of axial fan and condenser to deal with moisture and gas from the vacuum pump and roots pump, it can prolong time to change vacuum oil while meeting emission standards.

Features of Transformer Vacuum Drying Machine

  1. With PLC option for automatic control
  2. GIS connection available
  3. Digital vacuum degree management
  4. Anti-absorption
  5. The machine can start fast
  6. Strong vacuum pumping capacity
  7. Stable performance

Transformer Vacuum Drying Machine Work Flow Chart

Advantages of Transformer Vacuum Drying Machine

  • With imported backing sliding-vane rotary vacuum pump and Roots blower pump manufactured by LEYBOLD/BUSCH corporation in Germany.
  • They are reliable in quality, large in air-pump capacity, high in vacuum degree, low noise and can continuously operate for 24H.
  • With twin-stage vacuum pumps, the roots pump is its main pump, and a sliding-vane rotary vacuum pump is its backing pump. 
  • With imported resistance digital-display vacuum gauge, it is accurate in digital display, convenient in reading and carries out the whole set automatically self-control through cooperating with other components.
  • Phase order protection: this set has the phase order protection function so there will be no vacuum pump reversal.

Parameter of Transformer Vacuum Drying Machine

Name of Parameter            Unit / ModelZJ-70ZJ-150ZJ-300ZJ-600ZJ-1200
Pumping Speedm³/h252540108021604320
Limit VacuityPa≤3≤1
Power Supply 380V, 50Hz,  3-Phase 4-Wire  (or as requested)
Pumping Level 23
Diameter of vacuum connectionmm2540506580

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

Product Images

In addition to the transformer drying vacuum pump, we also provide a transformer oil filtration machine, including a single-stage, double-stage and intelligent transformer oil purification plant. We are one of the world’s competitive companies specializing in high-tech oil purifier research and manufacture. Yuneng can produce 1,000 sets of oil purifier machines for other fluids every year. If you have any questions or needs for our products, please feel free to contact us.

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