Thank you very much for your response jim.
neutral is not grounded accidentally. the neutral was never connected to the grounding resistor, from which the 51N gets activated when ever there is flow of current through the neutral. as the neutral is not connected the 51N relay never got...
Thank you for the replies.
The neutral of the generator was supposed to be connected throught the neutral grounding resistor. Our electricians forgot to make this connection. The unit was running perfectly and is on grid. as the neutral is not connected to the neutral grounding resistor the...
Hi All,
Good morning. we had a 20MW, 13.8 KV wye generator and it has a neutral grounding resistor. Some how we failed to connect the neutral grounding resistor and during a rain storm we burnt the generator. Even though the neutral is not connected to the neutral grounding resistor it was...