Maximum over voltage in four wire system with multiple ground points.

[pukar12345]

Hi all,


What is the maximum over voltage that could arise in four wire system with multiple ground points when system fauls occur (L-G or L-L of double line to fault or any other type)

Thank you in advance for your reply.

 

[7anoter4]

See[for instance] :

http://204.200.193.29/pdfs/paper10JN.pdf

chapter VII Surge Arresters.