6.FOR OPERATIONAL CHARACTERISTICS

FOR RESISTANCE

r_p= L_mtpT_p/a_p

  Where =0.021 H mm²/m

                d=mean diameter of primary =265.825mm

                 L_mtp=length of mean turns of primary= d = 835.11mm

Now, r_p=((0.021*835.11)/1.5393 )*2310 = 26.317 ohm

For secondary winding, r_s= L_mtpT_s/a_s

   d_s=mean diameter of LV =192.38mm

   L_mts= d_s = 604.37mm

 r_s= ((0.021*604.37)/70.8)*50 = 8.96 *10^-3ohm

 Total resistance refers to primary winding

   R_p  = r_p + r_s(T_p/T_s)²

        = 26.317 +8.96*10^-3(2310/50)² = 45.44 ohm

PU resistance = (I_p*R_p)/ V_p

                        =(3.787*45.44)/11000 = 0.0156 ohm