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Two-Stage Transformer Oil Filtration and purification machine
Two-Stage Transformer Oil Filtration and purification machine

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Dissolved gasses in transformer oil can cause arcing, corona discharges, and overheating--reducing the electrical efficiency and

Why purify transformer oil?
Dissolved gasses in transformer oil can cause arcing, corona discharges, and overheating--reducing the electrical efficiency and lifetime of the transformer. Likewise, water contamination at levels as low as 30 ppm (parts per million) can adversely affect the insulating strength of the oil. With ever-increasing standards for energy efficiency of power distribution transformers, the need to effectively degas will become even more important in the future. particles contamination will also affect the function of insulating oil. So we need to clean used transformer oil. 



The machine can remove the free water, soluble water, gas, acid, free carbon(polarity material) and other impurities high-efficiently, increasing the pressure force and quality of oil, improving the insulation oil dielectric value, making sure the electric device running safely. The ZYD mainly purifies the insulation oil, which includes transformer oil, break oil, capacitor oil, switch oil, mutual oil, cable oil and so on. Our machine can regenerate those oils effectively. Meanwhile, this machine can inject oil into the electric device under the vacuum situation. Besides the insulation oil, ZYD also can purify any non-emulsification oil. It is a good oil purification system for the power station, transformer station, and other relative line.



1. ZYD can evacuate the vacuum for the electric equipments separately, such as the transformer. Also it can be used to dry the electric equipment and input the oil into the electric equipment under the vacuum state.


2. This machine have two vacuum pumps (one is the vacuum pump, other one is the roots pump), which can improve the working value highly. Making sure the water-content of the treated oil is less than 3 ppm.


3.  The machine adopts the double-infrared liquid automatic controller, pressure automatic-protector which can make sure the machine works online for150 hours continuously without person. So it is a reliable and high automatically machine.


4.  Besides the common vacuum oil purifier’s function of dewatering, degassing, and removing the impurity, this machine can regenerate the seriously bad oil by separating the electric-polarity materials, such as deeply oxides and free carbon from the oil effectively. The treated oil can reach the specifications of the new oil, such as the oil dielectric strength, flash point, acid value and oxidation resisting etc.


5.  There is a interlocked preventive device, which connect vacuum pump, oil pump, roots pump and heater. It can be power off automatically if there’s something wrong with anyone of the three parts. Avoiding the oil purifier dry, leak oil and be electric.


6. Adopts the thin film technology, which can remove the free water, soluble water, gas, acid effectively. 

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Our Main Products:

Series ZY Single-Stage Vacuum Transformer Oil Purifier

Series ZYD Double High Vacuum Transformer Oil Purifier

Series ZYB Multiply-Function insulating oil treatment machine

Series TY Turbine Oil Purification Apparatus

Series TYA Lubricating oil/ hydraulic oil purification unit

Series LYE Engine oil recycling system

Series TYB Portable light Fuel oil purification machine

Series PL Plate pressure oil purifier

Series TYD Vacuum dehydrator

Series EFD Explosion protection filtration machine

Series JL Portable oil filtering and oiling machine

Series IIJ Oil Tester (BDV Tester)

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