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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 6: CIRCUIT BREAKER
// EXAMPLE : 6.5 :
// Page number 565
clear ; clc ; close ; // Clear the work space and console
// Given data
kV = 132.0 // Voltage(kV)
C = 0.01*10**-6 // Phase to ground capacitance(F)
L = 6.0 // Inductance(H)
i = 5.0 // Magnetizing current(A)
// Calculations
V_pros = i*(L/C)**0.5/1000 // Prospective value of voltage(kV)
R = 1.0/2*(L/C)**0.5/1000 // Resistance to be used across the contacts to eliminate the restriking voltage(k-ohm)
// Results
disp("PART III - EXAMPLE : 6.5 : SOLUTION :-")
printf("\nVoltage across the pole of a CB = %.1f kV", V_pros)
printf("\nResistance to be used across the contacts to eliminate the restriking voltage, R = %.2f k-ohm\n", R)
printf("\nNOTE: ERROR: Unit of final answer R is k-ohm, not ohm as in the textbook solution")
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