Above 30 MVA Transformer Oil Filtration Machine Automatic Defoaming System

Above 30 MVA Transformer Oil Filtration Machine,

Tratamiento de Aceite Dieléctrico y Secado de Transformador



I. Application of Transformer Oil Filtration Machine

NSH VFD series double stages vacuum transformer oil filtration machine is special designed for processing insulating oil of high voltage electric equipments(especially for more than 500KV UHV insulating oil) in workshops or the field, storage tanks or drums, it adopts double stages vacuum source, double stages vacuum dehydration and degasification vessels, three stages precise filtration system, which can separate moisture, gas, particles and other harmful ingredients from oil much quickly and effectively to ensure the dry-level and dielectric strength improving greatly.. Meanwhile, VFD series machine can be used for online oil treatment for transformers and vacuum drying and oil-pumping for electrical equipment. It is also applied to the above 110KV EHV transmission and distribution equipment, capacitor oil, cable oil, mutual inductor oil etc.

II. Benefits of Transformer Oil Filtration Machine

1. Vacuum-pump from Germany famous manufacturer, with high air pump speed so as to get high working vacuity.

2. Vacuum-segregating employs a particular stainless steel,foldable column for dehydration and degassing ,and enlarges the area of separating to facilate three-dimensional evaporation, so as to abtain enough time for degrassing and achieve the best effect of separation.

3. Using new type of heating equipment,low heating load and is able to prevent oil from ageing.

4. Oil level control adopt photoelectric way ( the main components is imported from Switzerland )and features a very sensitive precise control. Even foams can be sensed, and thus there is no possibility of oil spray.

5. Personalized design, customers can require to choose their components are all or partyly imported from overseas. Include touching screen and flow gauge is can be selected according to customers. This series could meet different kinds of customersneed.

6. It equips filter elements imported from Italy(OPTION), Germany,which has large filtering area, strongly absorbent-dirt capability, high filtering precision.

7. Whether clients choose the oil pump from domestic or abroad, they all must be air proofed by our factory, they are free from oil leakage, low in operation noise, and long in using life.

8. Horizontal double vacuum separation technology, doubling the evaporation area and degassing time

9. Double stages vacuum source and dehydration, degasification system, vacuum pump with roots pump, high speed vacuum evacuation, ultimate vacuum ≤ 5Pa

10. Multi-stage precise filtration system with gradually increasing precision, which can effectively remove mechanical impurities from oil.

11. Automatic double-infrared liquid level controller, pressure protector, which ensure long-term safely and reliable operation.

12. Fully automatic temperature controlling system and multi-stages electric oil heater adopts low-load design to ensure uniform heating oil, the load is less than 1.0W/cm2, oil level and temperature protection of heater, which avoid cracking and aging of oil.

13. Automatic defoaming system with dual electronic monitoring system, which avoid the foam ejecting and gushing to vacuum pump.

14. Online oil treatment, vacuum drying and vacuum oil-filling for electric equipment.

15. Advanced cooling system of vacuum pump, it reduces the frequency of oil’s replacement and extends the life of vacuum pump.

16. Interlocked protective system connects oil pump, heater and liquid level sensor, avoiding blank heating, blank pumping, oil leak and electricity leak. If there is any fault, machine will be power off automatically.

III. Working Flow of Transformer Oil Filtration Machine

1. The insulating oil is conveyed into the plant by means of pressure difference. Oil will firstly flow through a coarse filter, which can filter out large particles and mechanical impurities from insulating oil.

2. Oil is heated uniformly by electric heater with less specific heat transfer of 1.7w/cm², thus the deterioration of the oil caused by overheating is avoided during this process.

3. The special vacuum tank create a large oil surface and a resulting thin film, where the oil flows track and static water evaporation area were expanded to the largest extent, so that the effect of dehydration and degassing is maximized effectively. The particular double-stage vacuum pump system and pressure-boost technical make vacuum degree in vacuum tank higher than that in common oil purifier plant. Specially-designed oil level controller in the vacuum tank assures a continuous oil flow-through in the plant, thus resulting in an optimised dehydration and degassing of the oil. With the double-stage vacuum oil purifier, the installation period and maintenance period can both be shortened effectively.

4. After degassing and dehydration under vacuum, the oil is conveyed by through the fine filter and out of the plant.

5. Oil Circulation is recommended to achieve better effect of purification and filtration.

IV.Oil Data After Oil Filtration

V.Machine Specification of Transformer Oil Filtration Machine

VI. Available Style of Transformer Oil Filtration Machine
1. Fixing type,mobile type with four wheels and mobile type with trailer.
2. Normal appearance type,shelf-covering type and explosion-proof type.
3. Avaliable in different color.



About us:
►We are the leading manufacture near 25 years experience and supply best quality and highest cost performance oil purification machines/tratamiento del aceite dieléctrico. Our oil purifier equipment are built by high quality raw materials with newest advanced technology by many skilled technicians and professional workers. We are honest to every customer and responsible for every machine we sold, we offer great after sales service, anytime when customer need us, no matter before or after purchase, we are available online or calling, to make a fast and instant response to customer.
►we practiced in this industry during all these years, and have rich on-site experiences too. Any on-site cases, please contact us for a solution.
►For detailed product specifications, please leave us your email or mobile no. To send you the catalog. Thank you.

Sino-NSH Oil Purifier Manufacture Co., Ltd. is a high-tech company which is engaged in researching, developing and manufacturing purification equipments. Its parent company, Sino-NSH High-Tech Company, was established in 1992.

NSH regards technical innovation and all-round service as its philosophy. Taking advantage of human resources capital and absorbing domestic and foreign advanced purification technology, NSH is committed in making purification equipments. NSH has been authorized the ISO9001 Quality Management System Certificate and European CE Certificate, now NSH becomes the main manufacture base of purification machines in China. 　

NSH oil purification equipment series are extensively used in the fields of electric power, petroleum, natural gas, mechanical manufacture, steel, metallurgy, railway and aviation, etc. The main products covering 100 kinds of products can meet different needs of customers. For special demands of customers, we offer particular solutions.

Nowadays, the company’s sales network covers all the provinces in China and exports to more than twenty countries around the world.

NSH products earn its fame on high quality, advanced technology and excellent service in both domestic and foreign markets.

NSH products are not only able to lower customers' cost and secure risk effectively, but also solve the problem of the waste-oil-contaminate environment.

Join hands with NSH, and get accomplishments for you and us.