## Transformer Losses

Experimental transformers using superconducting ( Super conductor is one that in which zero losses occur) windings achieve efficiencies of 99.85% i.e zero transformer losses, but it would be available in coming years.

### Losses in Transformer

**losses in the transformer**are as follows,

** copper losses (****Winding resistance) [Transformer Losses]**

**Total copper losses. = I**_{1}^{2}_{.} R_{1}+ I_{2}^{2}R_{2} = I_{1}^{2}_{.} R _{01}+ I_{2}^{2}R _{02}

_{1}

^{2}

_{.}R

_{1}+ I

_{2}

^{2}R

_{2}= I

_{1}

^{2}

_{.}R

_{01}+ I

_{2}

^{2}R

_{02}

**Core or Iron Losses (Transformer Losses).**

**1) Hysteresis losses (Transformer Losses)**

**W**η

_{h}=**B**

^{1.6}_{max}f.v watt**2) Eddy current Losess (Transformer Losses)**

Ferromagnetic materials are also good conductors, and a core made from such a material also constitutes a single short-circuited turn throughout its entire length. Eddy currents therefore circulate within the core in a plane normal to the flux, and are responsible for resistive heating of the core material. The eddy current loss is a complex function of the square of supply frequency and inverse square of the material thickness. Eddy current losses can be reduced by making the core of a stack of plates electrically insulated from each other, rather than a solid block; all transformers operating at low frequencies using laminated or similar cores.

**W**

_{e}= PB^{2}_{max}.f^{2}t^{2 }Watt

**Magnetostriction**

**Mechanical losses (Transformer Losses)**

**Stray losses (leakage Flux) (Transformer Losses)**

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awesome explaination

can u calculate losses in 750 KVA transformer. we using 20 hrs. every day load on average 450 amps.

input volt is 33000 high tension line voltage /out put is 415 volt 50 HZ. ALSO calculate being make unit consumed during losses when no load on SUNDAY /holidays. POWER FACTOR IS ALWAYS .99/UNITY.

KINDLY we request can u send formula how do i calculate losses ?.

Dear Sir,

pl. provide me the list of No load loss and full load loss of all capacities of distribution as well as power transformers of all possible voltage ration. I shall be really grateful for the same.