[RE-wrenches] AC Coupling

2023-10-28 Thread William Miller via RE-wrenches
Friends: I am starting to get the impression that there is a diversion on the understanding of the definition of AC coupling within the industry. I think this definition needs to be clarified. Below is a diagram of what I understand is a DC coupled system (I hope these diagrams come through)

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread Kirk Herander via RE-wrenches
I agree totally with your drawings. On Sat, Oct 28, 2023 at 4:17 PM William Miller via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Friends: > > > > I am starting to get the impression that there is a diversion on the > understanding of the definition of AC coupling within the indust

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread Jay via RE-wrenches
I’m going to both agree and disagree Agree The older inverters ( Schneider, Outback, etc) your drawing is correct. Disagree For many new inverters ( sol ark, ev4, fortress) they bring ac coupling into the inverter directly. Usually on the generator input and not in the backup loads panel. And I wil

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread Roland - RES via RE-wrenches
Agreed and we'll understand the differences, all of our SMA SI systems utilize both dc charging and AC coupled charging.Roland ShackelfordPresident / OwnerNABCEP PVIP #091209-162Office 808.775.7410Mobile 808.938.9239Power Solutions for Generations Renewable Energy Services, Inc." Where there is int

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread Chris Sparadeo via RE-wrenches
And just to muddy the waters a little, 2023 NEC uses AC Connected and DC connected wording in place of coupled. Same concept, new name. On Sat, Oct 28, 2023 at 5:01 PM Roland - RES via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Agreed and we'll understand the differences, all of ou

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread William Miller via RE-wrenches
Jay: I am not sure how it would be possible for a grid-tied inverter to operate with any battery inverter if it was not connected to the battery inverter AC output. The grid-tied inverter needs to see correct voltage and frequency before it can start up. How else could this work? I looked u

Re: [RE-wrenches] AC Coupling

2023-10-28 Thread Jerry Shafer via RE-wrenches
AC coupled systems used to work like this but with solark and sort of with outback they use the gen set input to the inverter, do the freq shift and charge via a preset voltage. This seams to work well but if you connect a genny it must be on the grid input via an ATS, alot more complicated the any