Going back to poco power can be lots faster because it's already back on when the switch decides to transfer. And yeah this thread is kind of mixed up with the other one that he is referencing. In that one there are posters saying that the breakers are tripping because the "induction motors are operating as generators" during the time they are winding down. But they can not operate as generators unless there is added capacitence to supply them with reactive power.No, at least not in my case. This is happening when the utility is restored and the ATS shifts back to a very stiff utility supply.
No, not in my case.
When I said more than one generator I meant we may have an emergency and also a optional standby generators supplying different loads.
I don't think we are talking about the same thing.
I am talking about a typical open transition ATS switching between a utility source and a back up source.
Once any time delay perimeters have been met the switch itself is as fast as it can move. In some cases this is very fast. Unless you program in an additional delay between break and make