Ultra-high voltage Transformer oil purifier Series YH-ZYD-U–YELOCO

Why Ultra-high voltage Transformer oil purifier machine is required?

Ultra-High voltage grid is known as the “power highway” which features enhanced capacity, long distance and low loss. Now there are 1000KV, 800KV, 750KV and 660KV. Considering its safety, it is highly suitable for insulating oil in transformers, mutual inductors and reactors. In order to achieve optimal dielectric strength and insulating performance inside of transformers and circuit breakers, dielectric oils must be kept absolutely clean and dry.


  1. Ultra-high voltage Transformer oil purifier machine is used to treat new oil, running oil, particularly applicable to 220KV-1000KV power distribution system and the national grid, shortening the oil treating duration during installation and maintenance.
  2. It removes acids and impurities quickly and effectively.
  3. It removes free and dissolved water.
  4. It degasses to remove other dissolved combustible gases such as Acetylene, Ethylene, Ethane, Methane, Hydrogen and Carbon Monoxide and carbon Dioxide.


  1. Its oil tank is bigger than common oil purifier machines’ oil tank.
  2. The oil pump uses the best quality three screw oil pump so that during the working of the oil pump, it does not make Acetylene, Hydrogen and so on.
  3. Efficient electric heating system, heating uniformity, less power consumption, safe, and reliable. Stainless steel heating pipe surface is resistant to corrosion and has a long service life.
  4. The machine choose LATENT technology to dewater and degas, could in order to efficiently remove the water and gas from transformer oil. It increases the breakdown voltage over 80KV and water content less than 3PPM.
  5. Adopts the double stages vacuum system, which can highly improve the machine working vacuum value. It can remove the water, gas and impurities in transformer oil high-efficiently, increasing and maintaining the oil's dielectric strength higher, making sure the electric device runs safely.
  6. It use a United States’ special gradually close type filter composite polymer material to purify the impurities effectively. It uses step by step encryption, proportion sharing of filter elements in addition to miscellaneous load and Reasonable fluid design to ensure the cleanliness and deep filtering of the particles from oil. It uses electrostatic adsorption to remove negative charge carrier and reaches charge balance to completely remove impurities and purifies oil particle size to 1micron.
  7. Double-infrared liquid level sensor, pressure protective system to ensure machine operation is easy and safe.
  8. Adopts interlocked protective system, which connects oil pump, heater and liquid level sensor, avoiding blank heating, blank pumping, oil leakage and electricity leakage. If there is any fault, machine will be turn off automatically. Operation is very safe.
  9. Adopts oil filled type shockproof vacuum gauge, exact pressure gauge, and it is durable.
  10. PTFE gasket makes it sealed, pressure bearing and oil proof.
  11. The machine is equipped with on-line temperature inspector, voltage tester, vacuum tester and oil level inspector. It knows oil condition and equipment working condition anytime.

Technical data:


Oil Data after Treatment:


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