lapsmith

I asked Growatt about the Export Power Limitation setting. Here is my question and their answer: Question: 1. There is a setting called...

I reached out to Growatt on the best settings for ramp rate (Growatt 11400 MIN series inverter). It comes from the factory at 15...

Sorry for the delayed response/update, I've been out of town. I have updated the 15V isolated supply schematic and am now 98% sure it...

I've never looked for one, but I imagine a 72V 1kw power supply is either hard to find or expensive, or both. I saw they have other...

Copy that. So is the controller powered by DC or AC? My water level is about 160'. Not sure what my GPM is, but with several acres of...

I looked at the RPS website and I see that they are for solar only. For some reason, I thought they ran on AC and used an inverter...

My understanding is that ramp rate adjusts how fast the inverter responds to changing loads, such as when a motor starts or stops. I'm...

That's too bad about the optimizers. Have you tried adjusting the ramp rate? Maybe that will minimize sudden current changes. I guess...

I actually did call Growatt and they lowered the sensitivity to the the lowest and it still happened. (Previously, they told me how to...

I have a Growatt MIN 11400, although this question may apply to any inverter with ACFI. Now that all my panels are installed in their...

Great, thanks! I will try to keep them equal, but won't worry too much otherwise.

That is the primary benefit of multiple MPPT as well as having the option to have different strings facing different directions. If...

There are several discussions here about laying out panel strings, but not related to my question. I have a Growatt MIN inverter with 4...

I tested the circuit (as drawn in my sketch, also no H bridge modules installed) with 15V. The wave forms at the transformer were as...

So if it won't work as drawn, would it work if they were both PNP or both NPN? If so, what would be the purpose of having two identical...

If it is true that they are BJT I think chances are good that they are the transistors in the datasheet I uploaded. Per both...

Sorry for the picture quality, but in person I can verify there is no solder bridge (also checked with DMM). I'm 95% certain that the...

That's what I would have thought, but is that possible the way they are connected? The bases of each are definitely connected together...

I spent the last two days (maybe 10 hours total) tracing the circuit. It answers a lot of questions I had but raises two others. Here...

The collector of Q42 goes to one of the winding terminals (primary?) of TX1. TX1 has two other separate windings. One goes to the Vee...