I know that a single phase to ground fault causes a rise on the neutral potential, but I need to explain that (why). Is it because there has to be some impedance (even though it could be small) between the neutral and ground (through the return path)? If it is a return path shouldn't the neutral...
I would like to know what would be the possible safety issues in using a common CAT IV flex-CT (Rogowski) around a 34.5kV insulated cable (not exposed). Theoretically I understand that the amount of current through a 34.5kV is not so high, but during a fault this may change. Is it more of an...
Could someone show me the calculations to arrive at the following percentages:
The available ground-fault current should be at least 25% (X0 = 10X1) and preferably 60% (X0 = 3X1) of the three-phase fault current to prevent serious transient overvoltages. Available is considerably higher than the...
