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Cast resin transformer

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Transcript

  • 1.  Name: Bidusmita Sahoo Regn no: 0901106016 Branch: Electrical Engineering  Submitted to: Mr. Abhimanyu Mohapatra Mr. Ranjan Kumar Jena
  • 2. CONTENTS  Introduction  What is cast resin process ?  Why cast resin transformer ?  Construction  Types of tests on resin transformer  Overload capability  Comparison with oil-filled transformer  Applications  Manufacturers  Conclusion
  • 3. 1.Set fire to the winding 2.ext paint caught fire 3.Self-extinguished 4.No damage ◆ Fire Testing: Test result: Non-flammable ◆ Cracking I Damp Heat Testing: Test result: Appearance normal, no damage, non-cracking. Technical characteristics remain unchanged.
  • 4. OVERLOAD When the temperature of the cooling air is lower than the limit allowed for the insulation class of the windings, the output power of the transformer can be higher than the nominal one. On the other hand by reducing the value of the selected power relative to the nominal one, the transformer can also be used without any problems with higher air temperature like for example those in tropical climates. The graph shows the curve which indicates the power to be selected as a function of the air temperature.
  • 5. ADVANTAGES OF CAST RESIN TRANSFORMERS 1.Non-hygroscopic insulation 2.Fire safety 3.High Mechanical strength 4.No leakage of liquids 5.Maintenance free & environmentally safe 6.High overloading capability 7.Only needs air cooling 8.Impulse voltage strength 9.Less failure rate
  • 6. DISADVANTAGES OF CAST RESIN TRANSFORMERS 1.Larger physical size 2.Initially high purchase cost
  • 7. MANUFACTURERS  ABB International Limited  BHEL  Siemens  Alstom
  • 8. CONCLUSION Cast Resin transformer is used where safety, pollution, size & economy matters a lot. Now-a-days the use of Cast resin transformers has been increased and they are widely used in power houses, Apartments, as back-up supply, etc. These are very commonly used in China, Japan, USA, Switzerland, Netherland. But these are very rarely used in India. According to my view Energy Department of India should think about the installation of these transformers in our Power System.