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Like I said, issue a joint statement with Deye saying that Sol-Ark designed their line of Hybrid inverters (that's what you seemed to be claiming in your post above) from the ground up and is the primary contributor to development of them, and I'll believe you. It will probably do wonders for...

Lol "came up with it" "Hmm, many US households have >100A supplies, but Deye only puts in up to 50A grid relays in their inverters. Lets see if we can get a 200A relay in there for our customers." Any competent engineer would think of that within the first few minutes of reviewing Deye's...

It is generally accepted that Sol-Ark is a reseller of Deye inverters with a few modifications and a 3fold price increase. Any claims to the contrary would need to be backed up by atleast a joint press statement by Deye/Sol-Ark explaining how Sol-Ark developed the Hybrid inverters from scratch...

Thought I'd share my experience ordering LF280Ks directly from EVE in China. They come in crates of 40 cells. So you need to order multiples of 40 I believe. Between me and a couple of friends we ordered 3 crates. These were delivered to New Zealand so bear that in mind when looking at costs...

Battery all done I also had to make some changes upstream at the inverters. This included replacing the old 40A DC MCBs with 125A DC MCCBs and redoing some of the DC cabling. Mostly complete I didn't have to do much in here, but here's a peak inside the battery isolation panel. It is ready...

I found this (which I have only read bfiefly), but it seems to say that Sol-Ark sells "Deye's storage string inverter products and technology". https://casetext.com/case/portable-solar-llc-v-lion-energy-llc This confirms my (and many other's thoughts) that Sol-Ark did not develop the...

My 15kWp system has produced 9MWh since it was installed in October last year. Bearing in mind we are coming to the end of summer here in NZ so I don't expect the same production for the next 6 months. Since we are talking big numbers. Here is 40MW worth of current going through a high voltage...

Good on you Scott for participating in this thread. I'm looking forward to your future videos where you get to add some more batteries and tidy up all the wiring etc. You will be able to learn a lot on this forum.

I installed my thermal pad.

In a genuine bolted fault, the BMS is quite possibly going to be toast anyway. Overcurrent protection such as a Class-T fuse could take as long as 100-200ms to operate, in which time a fairly substantial amount of energy would have dissipated into the FETs, turning them into popcorn. But at...

Ok, if you can get Deye to corroborate that, we will believe you.

Sure, no problem

Yeh, thats what I'm thinking. Since these cells have the nice big wide, two bolt terminals, there shouldn't be any issues with small contact areas causing hot spots. I will measure the bars to see what the CSA is, and work out the max current they can handle.

A few reasons: 3 5kW inverters would cost the same as 2 8kW inverters. With 3 inverters I get 6MPPTs which suited my layout better. The wall I mounted them on was relatively constrained as far as height goes. So the taller 8kw units would have been more difficult.

So these are your main innovations? These are just minor modifications to the Deye inverters to make them more US friendly. Are you saying Sol-Ark didn't design the main features of your inverters? I.e Power electronics circuitry to allow nameplate rated power (or higher) into the batteries, out...

I extended my ct cable using cat 6. I paralleled the cores up. I.e 4 wires for each of the CT conductors. Total length would be about 20-30m. It works perfectly for me. I actually had a Chint smart meter but that has been giving me problems with having a wildly oscillating current reading when...

Remember that fuses (or CBs) are unlikely to be able to help if a cell is failing and combusting. The fuse can only protect equipment downstream of it, so your cables and inverters. I would suspect as DIYers, the most common fault that is going to occur on our batteries is when we are tinkering...

Here are my guesses (in the table above). I'm fairly confident of the server and networking stuff as I have a similar setup with 12bay server, router, PoE switch suppyling APs and CCTV cameras, NVR. Mine uses 300-400W and more when booting up, although that is not very often. Your workshop...

Interesting idea. If you install a temperature sensor in between the windings and monitor that under load before and after immersing in oil, then that should give you a good idea of how much additional load you can run through it. Edit: I'm an electrical engineer and deal with big oil insulated...

I dont think anyone (except perhaps jcromer) thinks that Sol-Ark or Deye designed the first hybrid inverter, however, to develop any hybrid inverter from scratch (even now that there are so many on the market) would be a huge job and require a huge amount of design work by very...

Our local distro in Bay of Plenty and Taranaki, New Zealand has been doing the same thing for a while. I understand it has been working pretty well. https://www.powerco.co.nz/what-we-do/our-projects/remote-area-power-supply

I think you need to do your ROI calculations differently. I suspect 70% of your $14k savings would be made by moving to electric vehicles alone. You will still be paying for the electricity, but it is going to be a lot cheaper than buying gas. Here are some quick calculations on how much your...

I have spoken to him before (2.5 years ago) and he was helpful and I didn't have any issues. On a related note, I understand EVE only ship orders in multiples of 40 cells now. Something to be aware of.

I have just heard from Deye that the SG04 models have been approved now, and they are still waiting on the SG03 model to be done. Does anyone have any idea what the differences are between these? All i can see on the datasheets is that the SG03 is much heavier and taller. I have asked Deye...

For perspective, my 40kWh lead acid bank (4 x 200AH parallel strings) has a fault rating of 11kA. I would have expected that lithium chem cells would have higher fault ratings. I am using these as my main battery fuses And I have mid string 125A fuses like these with a 40kA DC rating on each...

I understand Australia uses the same (MEN/TN-C-S) earthing system as New Zealand. If that's the case in your situation, there should be a permanent link between N & E in your main switchboard and therefore you don't need a N-E contactor, as long as this link is maintained when you lose your...

I don't know for sure sorry, but I suspect it is that they are unable to fully support one of the new grid support modes such as Volt-VAr mode that the new standard requires.

Another hint taken from the Deye datasheets: The single phase inverters have a lower MPPT voltage range than the three-phase inverters. This is because the inverter steps the MPPT voltage up to ~320V or a bit higher (thats peak to peak voltage for 230V RMS) and then chops it up to make the AC...

You are probably sleeping now. But I would leave the schneider switch or mcb or whatever it is, off until the sun has started coming up. Then check the voltage at the terminals of the switch to confirm one last time that the polarities are correct before you close the switch and energise the...