Oil Filtration System > Transformer Oil Filtration Machine

All high capacity transformers in use today have to cope with voltages in excess of 400kV. Therefore it becomes imperative to maintain optimal insulation properties of the transformer oils by rigid control over moisture, dissolved gases, particulate contamination and acidity.

Transformer oils deteriorate with time and the decay begins the moment the transformer oil is shipped from Manufacturer’s factory. High temperatures, the presence of oxygen and water, the catalytic action of the materials within the transformer, all combine to result in oxidation and cracking of the transformer oil. The by-products of this oxidative process are acidic in nature, which results in an ever-increasing rate of deterioration of the transformer and its oil. This type of contaminated oil completely loses its insulating properties which will affect the life of the transformer in the long run. Hence the insulation properties of transformer oils should be maintained periodically by filtering this oil through our “Nirmal” filtration machines.

The periodic and proper treatment of these insulating fluids will result in the improvement of the properties of the entire insulating system of power transformers and will extend the effective lifetime of the asset.

Many thousands of oil filled transformers containing huge quantities of insulating oil are in service today. As you are aware, the mineral oil in these transformers is intended to,

  • Provide dielectric strength of the transformer insulation system
  • Provide efficient cooling
  • Protect the transformer core and coil assembly from chemical attack
  • Prevent the build-up of sludge in the transformer

When the properties of the oil have changed enough that oil can no longer satisfactorily perform any one of the above mentioned functions, the oil is said to be bad. Continuing to operate a transformer with bad oil significantly reduces the transformer life expectancy.

The principal functions of the insulating fluid are to serve as a dielectric material and an effective coolant. To perform these functions, the insulating fluid must possess specific qualities at the time of initial impregnation of the transformer core and filling of the tank at the manufacturer’s factory and which must be maintained at the same level in field operation if optimum performance is to be guaranteed. Typically these qualities are well defined by international and national standards.

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Based on these functions of good oil, the goals to be reached include,

  • Operating the transformer in the “ sludge free range”
  • Preventing the premature transformer failure due to transformer oil oxidation products
  • Conserving two very valuable resources – Oils & Transformers

Applications of “Nirmal” Machines :

Our Filtration machines are very much required in the below mentioned fields where the power consumption will be very high,

  • Oil & Petroleum Plants
  • Steel , Copper, Aluminum & Cement industries
  • Big Manufacturing Industries
  • Transformer Manufacturing industries
  • Engineering , Procurement and Construction ( EPC) contractors like ABB, Areva, Siemens, Toshiba and many more will be supplying our Filter machines as a part of a their package in construction of power projects.
  • Oil processors
  • Local Electrical contractors who carryout Filtration & Maintenance of transformers
  • Utilities like Power Generation, Transmission & Distribution companies

We take responsibility from studying the client requirement, recommendation of solutions, design, implementing the solution and even train personnel to maintain the systems, and most important of all supporting them fully in effectively incorporating our system into the client’s infrastructure. Hence we provide total solutions for oil processing systems. We have been serving the world market for the over 5 decades and have catered to various markets varying from small electrical contractors to big corporate & government agencies. As a whole, Transformer oil industry knows “Nirmal” brand of Oil filtration systems which is the bench mark for rest of the industry.

To conclude, insulating oil, in particular when properly maintained can give practically unlimited extension of life. Only a limited percentage of the crude available are used for conversion to transformer oil and hence it is our responsibility to preserve the life of the most precious asset in today’s world called “OIL” for our future generation.