I have a shore to ship supply. The shore transformer is delta to y(ungrounded) but the ship may be grounded(through the Hull or zig zag transformer?.) The connection is 13.8kV step down to 6.6kV to the ship. Any recommedations on modifying the grounding? I'm thinking of high impedance...
The fault current levels typically depend on the tranformer that is feeding your system and your geographical location. For example, if your facility lies a distance from a well populated area; don't be surprize if the fault currents are low. In regardss, to the ground fault current; IEEE Red...