Hi Mike, Thanks for the quick reply!
I am at a power station, and the line side bus is the Western US electrical grid, while the incoming bus is the generator. Here are my observations and thoughts.
When the generator is offline, the synchroscope doesn't move because the grid is at 60 Hz and...
Back in the 1980's, when I was a young pup in Admiral Rickover's propulsion program...
We were told to always take the synchroscope out of service after using it, lest it "burn out". I took it on faith that failure to de-energize this meter would result in damage (even though none of the other...