Difference between core type transformer and shell type transformer

Core type Transformer



  • It requires less iron.


  • It requires more conducting material.


  • Core type Transformer is used in low flux density applications.


  • Winding surrounds the core.


  • Winding installed in both legs of the core.


  • There is only one path of the magnetic circuit.


  • Maintenance of this type transformer is simple.


  • We cannot provide natural cooling for this sort transformer.


  • In this type transformer, concentric cylindrical winding is employed .


  • It has maximum leakage flux. Hence more losses.


  • For 1-phase transformers, it has a two-legged core used.


  • It is economical for high voltage applications.                                                                                       


                                                                                                                                                                                                                

                                                                

Shell type transformer


  • It requires more iron.


  • It requires less conducting material.


  • It is used in high flux density applications.


  • Core surrounds the winding.


  • Windings installed in mid-leg of the core.


  • There is two path of the magnetic circuit.


  • Maintenance of this type transformer is complex.


  • We can provide natural cooling for this sort transformer.


  • In this type transformer, sandwiched winding is used.


  • It has minimum leakage flux. Hence fewer losses.


  • For 1-phase transformers, it has a three-legged core.


  • It is not economical for high voltage applications.                                                                                                                                                                                                                                                    

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