In a system having 220 kV, the line to ground capacitance is 0.04 μF, inductance is 4.5 H. Let C is the voltage appearing across pole of circuit breaker if a magnetizing current of 8 A instantaneous, is interrupted.
R is the value of resistance to be used across the contacts to eliminate the restriking voltage. Then,1
R = 10.6 kΩ
2
e = 84.85 kV
3
e = 120 kV
4
R = 5.3 kΩ