Art
Yes, I understand that.
I was referring to a dead stopped turbine, not one that was continuously spinning and only had to have the generator engaged and sync's to the grid.
I helped overhaul all the control and electrical systems for a small hydro turbine, I think it was < 300kw, most of the controls were old style relay logic with the big noisy GE HGA style relays. The sync control was more or less manual, no Seimens, or Allen Bradley PLC's.
Once the turbine was up and running and the speed controller took over, engaging the generator and syncing was quick. It's the speed/load control circuits that need a little time to smooth out. It was a horizontal shaft ,so there were hydraulic systems that had to be brought up to temp and pressure to control vibration.
We're running one of the newest generation GE Turbine controls systems at work and it's a huge step up from the 1960's vintage GE system it replaced. It's really nice.
"The first thing you need to know, will likely be the last thing you learn." (Unknown)