Running and Incoming bus - Synchronizing Circuit - Generators

[Nice77]

Hi All, I do electrical design for a company that does a lot of paralling switchgear. Now, its been yearssssss since I have done this.
I am looking on the internet to help refresh my mind how this all works, on a simplified level.

First question: Can anyone explain what is the "Running Bus" and what is "Incoming Bus" when it comes to synchronizing Generator circuits?
Second Question: Is there a good place to go, online, that explain this stuff simply?

Thanks in advance

 

[xnuke]

Running bus is already powered from the grid or other generators. Incoming is the generator being synchronized. Plenty of sites on the internet discuss generator synchronizing - just search.

xnuke
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