Hey, experts:
I think shunt trip coil = trip coil for breakers. Is that right? But I couldn't find some doc to convience my coworkers. Very appreciate your help.
Could any online expert tell me if I can use the same CT for Main & Backup protection for Transformer?
As I think the Main & Backup protection should use different CT. But I have not enough sets of CT in current Transformer. I don't know if there is a standard shows Main & Backup protection...
Could anyone please tell me some information about the fault clearing time for 34kV substation?
Primary Protection + CB Trip = ?
Backup Protection + CB Trip = ?
Thank you!