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+// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION 
+
+// PART III : SWITCHGEAR AND PROTECTION
+// CHAPTER 9: PROTECTION OF TRANSFORMERS
+
+// EXAMPLE : 9.5 :
+// Page number 636-637
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+kVA = 200.0          // Transformer rating(kVA)
+E_1 = 11000.0        // HV side voltage of transformer(kV)
+E_2 = 400.0          // LV side voltage of transformer(kV)
+ratio_CT = 500.0/5   // CT ratio on LV side of transformer
+I_f = 750.0          // Fault current(A)
+
+// Calculations
+I_2 = 500.0                   // Primary CT
+I_1 = 5.0                     // Secondary CT
+I_1_T = E_2*I_2/(3**0.5*E_1)  // Primary current in transformer(A)
+I_hv_T = I_1_T*3**0.5         // Equivalent line current on HV side(A)
+I_pilot_lv = I_1*3**0.5       // Pilot current on LV side(A)
+
+// Results
+disp("PART III - EXAMPLE : 9.5 : SOLUTION :-")
+printf("\nCT ratios on high voltage side = %.2f : %.2f \n", I_hv_T,I_pilot_lv)
+printf("\nNOTE: Circulating current is not calculated")