A 10 kV alternator is protected by the balanced circulating current system. It is grounded through a 10 Ω resistance. The protective relay operates at 1.8 A in the pilot wires, which are connected to the secondary windings of 1000/5 CT. The percentage winding which remains unprotected will be

A 10 kV alternator is protected by the balanced circulating current sy

1.	A 10 kV alternator is protected by the balanced circulating current system. It is grounded through a 10 Ω resistance. The protective relay operates at 1.8 A in the pilot wires, which are connected to the secondary windings of 1000/5 CT. The percentage winding which remains unprotected will be
A.	20%
B.	31%
C.	62%
D.	76%
Answer» D. 76%