Our contractor wants to install power transformer 110/20/6kV, Y,yn9,d11 in a substation. Primary (110kV) wounding of TR is not grounded. 110kV network is directly grounded.
Whats are the consequncies of connecting ungrouded primary in grounded network?
After reading this thread thread240-191665 and this article: http://www.netaworld.org/files/ItemFileA877.pdf, I need to ask one question to get clear something to myself.
Article mentioned above, recomends grounding of CT's in protective relay house. I also found same recomendation in some...
