How to use the Residual Current as a Polarizing Signal to detect the direction of the Ground Faults.
What should I do?
A. Bring the current signal from the connected CT at the neutral point of the device to Polarizing Signal.
B. Bring the current signal which is obtained from CT in all 3 phases at the secondary side of the coil.
C. Bring the pressure signal obtained from VT to Y through resistance to Polarizing Signal.
D. Bring the current signal obtained from CT in the window through the 3 wires to Polarizing Signal
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.