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Tema IV: Transformadores

Tema IV: Transformadores

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4.15 El transformador en el<br />

U cc(t) cc(t)<br />

ensayo de cortocircuito I<br />

Al ser el flujo<br />

muy bajo<br />

respecto al<br />

nominal es<br />

nominal I0 es<br />

despreciable<br />

I 1n(t)=I 1n(t)=I2’(t) 2’(t)<br />

R CC<br />

U cc (t) cc (t)<br />

I 1n (t) 1n (t)<br />

X cc<br />

R CC=R CC=R1+R 1+R2’ 2’<br />

X CC=X CC=X1+X 1+X2’ 2’<br />

R 1<br />

X d1 X d2 ’ d2 ’ R 2 ’ 2 ’<br />

I fe<br />

R fe<br />

I 0<br />

I µ<br />

X µ<br />

Al estar el secundario<br />

en cortocircuito se<br />

puede despreciar la<br />

rama en paralelo<br />

I 2 ’(t) 2 ’(t)

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