ZYD-A Double-stage Vacuum Transformer Oil Automation purifier  is mainly used for purifying the insulating oil in all kinds of large power equipments that are above 110Kv, especially for the altitude which is over 500 meters.It is special for treating the used and old transformer oil, mutual oil, and switch oil.   
Comparing with the single-stage type, this machine adopts the double stages vacuum system, which can improve the machines working vacuum value highly, so it can dewater, degas and remove the impurity more deeply and effectively. The dielectric value of treated oil is higher than 65 KV. It is very suitable for the large electric & insulation equipments.The Oil Purifier Oil Filtration Oil Recycling Oil Purification machine can remove the water, gas and impurities in insulation oil high-efficiently, increasing the pressure force and quality of oil, make sure the electric device running safely.   
The machine is mainly used for electric power department and industries to deal with various oils such as transformer oil, mutual oil, switch oil and so on.  
  Features: 
1.The device adopts auto-control by central data processing, and processes kinds of variable feedback data immediately, then sets instructions.
2. Advanced infrared liquid-level control system to accomplish fully automatic control.
3. High vacuum: High point-Vacuum≤5pa Working-vacuum≤35pa
4. High absorption speed: Absorption speed power≥333L/Sr.
5.Duplex 3D stereo-evaporation, eliminating the liquid water quickly
6. UK G technology by which the trace water that is show chain, such as dissolved water, can be removed effectively. Distinctive removing impurities system filtering through double FH trapezoidal network and absorbing by high polymer without the mechanical power
7.Carbon fiber infrared heating system that can make the oil contains zero sum of ethyne after the treatment
8.Especially applied to vacuum oiling and drying for power transmission equipments which are over 110KV
9.The oil of any grades can be treated on line at the working site.  
Advantage:   
Comparing with the single-stage vacuum oil purifier, ZYD Series dewaters, degasses and removes the impurities more quickly, more completely, and makes the oils limiting voltage-withstand value much higher. As the bridge-type vacuum linking system, it is used for filtrating system as well as an independent vacuum power supply to vacuum oiling of power equipment