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I'm not an electrician and really don't feel comfortable giving more details here. It feels kinda irresponsible. My current set up is... Actual grid connection (no more gene.), battery bank, panels and a single ng bond in the panel at the power pole coming from the grid. After adding the...

No, long gone. I'll update the post

Nice. It'd be really cool to reverse engineer the communication it's doing and create an open source project for the server...

I haven't had trouble with it reconnecting. But, I have had trouble with their service. It's flaky and will give the appearance that your device isn't online. ...actually, the app shows its offline now. Though all my other devices are

I'm having trouble picturing this

Did you replace the fets that are unavailable?

I have some left over 2x2 steel tubing that I could use for stand offs.

Thanks for the pro-tip. I'll ship around

Hey peeps, I have 20 t250 panels on make shift "ground mounts"... scrap lumber, rocks, laying on the ground. It's time to get them moved up to my rain collection roof for a variety of reasons - pv production, safety being the top two. My rain roof is 20×30' and only about a 4-5 degree...

I'm not saying that it's not an issue, in general. it is. But, that isn't causing my fault code 8 problems this time. ...though, it has in the past. When I checked my data records for all the bms units (stored in Blynk) none of them were hitting hvc for any of fault and shutoff...

all the n-g bonds that I'm referring to are external to the unit. They're in breaker boxes. I didn't touch anything in the unit. I don't think I'll have time to do a diagram and I've already left the ranch (where the system is). if I do get time, I'll post it here.

[SOLVED] not battery related - I assumed it was a battery v spike issue for historical reasons. it was n-g bond related details in my inverter review thread: https://diysolarforum.com/threads/sungold-split-phase-6k-hybrid-inverter-scc-review.36334/post-533456

Instead of rehashing all the weird stuff I've experienced with this inverter (lvx6048), here's my final message back to sun gold support. ----- MY LAST QUESTION TO SUNGOLD: How should someone set up n-g bonding on this unit? My grid connection is 240v split phase and has an n-g bond at...

Sungold hybrid 240 split phase 6wk. It's the exact same as the lvx6048 that mpp and the others sell. Maybe a more expensive scc would ramp down, but this one doesn't. It just faults with code 8. According to sungold support, it's caused by voltage spike on battery. The BMS "shouldn't" do...

regarding turning on/off the balancers; I think what I'd do is add a relay to my esp32 based monitors that are on the bms's now. it'd be a simple add-on and simple code mod.

I think you all are correct about getting to a too-low state of charge and the balancers as the root cause. The batteries were down to near zero soc about 10 or so days ago and that seems to correlate with this new issue. The cells did begin to drift when it down that low. Since then I've...

Yep, it does it without them as well.

Issue: when one of my bms cuts charge due to high cell voltage, it causes a voltage spike on the dc battery side of things. I have measured this all the way up to 70v. When this happens, my inverter will fault and cut all power until I go out there and reset it. System: I have three...

...also, furtrader has a new version of the overkill library that appears to enable more writes. I have not used it at all

It was designed on EasyEDA. If you have an account there the project can be shared. However, that design uses a fet that is totally unavailable anywhere these days... supply chain, chip shortage. If you order it, they'll happily build it missing the fet... which makes it useless. A...

I ordered 5 of the boards. They didn't add the mosfets and shipped them out. ...I should have paid more attention to the "fine print". @Porch

I don't know. The 4g Vision and mofi has been solid since installing it. No plans to change

After adding a n-g bond on the ac output and ac input side, the invert is well behaved. It will now charge the batteries with both solar and ac input simultaneously. It is not toggling on and off charge. I'm currently charging at 90a from ac and about 15-25 from solar (it cloudy and...

I bought mine off of Amazon. ...That's the limit of my experience buying heltec stuff

Wanted to share the update of the code to Blynk and screenshots of the app. The shots are after fully charging; note that this battery has a heltec active balancer. you can see it going to work as soc reaches "100" %, according to the bms. I don't make a habit of changing that high. I...

Stefan Krauter just published a new paper on a hybrid pv and hydrogen fuel cell model for reducing grid interaction, etc. Thought I'd post it here. It's in Creative Commons.

Totally. The software running on the esp can be modified, copy/pasted... whatever. But, why do that? Your controller should be handling that and your bms should not allow over charge. Is your bulk charge voltage too high? Do your batteries need to be balanced?

It's starting into the rainy season and it just stopped raining on my 5kw array. It's still partly cloudy. I would expect a low/moderate pv input given the past months data. However, I'm currently seeing charge input of about 2500w. That's a lot more than expected. I'm speculating this...

@Porch How's the newest version coming along?

Just like I did on the overkill esp32 thread, I'm going to document the progress here. Today, Sungold sent me the rs-485 spec for inverter/bms communication. It's attached My goals with this project are just to make a better dashboard which integrates with my existing esp32/blynk/node-red...

I have a new Voltronics hybrid 6kw split phase scc/inverter. Mine is from Sungold Power. But, it's the same unit. https://voltronicpower.com/en-US/Product/Detail/InfiniSolar-VII-6KW-(Split-Phase) I found this repo on guthub https://github.com/gch1p/inverter-tools Has anyone in this...

My array produced about 4kw in good sun. It got to about 80% charge yesterday and then stopped at about 54.1v. Then nothing but draw on the batteries with 3ish hours of sun left. I emailed the company and they're asking for more troubleshooting info

..also, I use heltec 16s active balancers on two of my three batteries.

Yes, mine will charge to bulk voltage and the go to float. Issue with that is the lifepo4 batteries need to charge at or close to bulk until there is little to no current flowing. This because they have a pretty flat voltage curve as the reach 90ish % soc. ...so, what I did was set my...

Ok.. another update. 1. If the inverter looses power input over night, it will go into standby mode. For example, battery cutoff is reached. If this happens, when generator or pv is available , the batteries will charge but there will be no ac output until the unit it manually restarted...