Saturday, April 30, 2016

Finding reactance

FOR LEAKAGE REACTANCE
Now , leakage reactance refers to primary
   Xp=2 *f* *Tp2*Lmt/Lc*(a+(bp +bs)/3)
  Where Lmt=length of mean turns
                 Lc=height of winding
                  bp=radial depth of primary
                   bs=radial depth of secondary & a= width of insulation
Lmt= dpt
      = (inside of dia of LV + outside of HV winding)/2
      = *(176.62*293.65)/2
      = 738.72mm
Lc =axial height of primary
Lcs= axial height of secondary
Now, Xp=2* *50*4 *10-7*23102*(738.72/363.125)*(15+(47.75+15)/2)
               =198.742 ohm

PU leakage reactance = (3.787*198.742)/11000 = 0.0684

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