Talino8

Thanks for your help. But where can I buy this card? Does Daxtromn sell this piece? Or where can I find it?

I still haven't found a solution. I discovered that it disconnects the PV even on sunny days. Additionally, I realized that another variable to consider seems to be low load. If the output is high, it doesn't seem to occur. At the moment, I have patched the situation in this way: 1)I have created a large battery pack of 15 kWh, so I am more protected from PV disconnection. 2)I added an MPPT to which I connected an additional 2.5 kW of PV, which always supports the charge. Since the first of March, this inverter has produced 600 kWh for me. So, it is true that it has problems, but with the solutions that I have found, it can be used without issues. I am still waiting for someone to find a real solution.

Thank you. When it comes to the main issue of the inverter disconnecting the PVs, it seems to happen specifically when there's a voltage drop in the PV array and the available energy is low. This occurrence is rare on consistently cloudy days, but more common on sunny days when clouds pass by. I believe that reprogramming the software could potentially solve this problem, but identifying the manufacturer of the inverter isn't easy. NEXT appears to be the largest company that assembles these inverters. If any of you have encountered this problem and found a solution, please share your experience.

@Silviu TM I tried setting parameter 37 to Hyd, but it doesn't change anything. As the clouds pass, PV begin to disconnect

@Phuti I have no communication between the inverter and BMS. I have a homemade battery made of 280k Lifepo4 cells and a JBD BMS. The battery's charging and discharging are managed through the inverter voltages. In case of any issues, the BMS will intervene. It has already intervened several times by disconnecting the battery, and the inverter has not been damaged. The values I have set are 05: USE 26: 55V 27: 55.5V 29: 48V I use these values because they allow me to use most of the battery's charge without putting unnecessary strain on it. P.s. Do you have the link of this seller? I can't find it anywhere

@Phuti sorry for asking, but who is this seller? It seems very correct and helpful if he sends you another card again. The next one I might buy from him. Also, don't you experience the PV disconnection problem?

Sorry for the delay! @Puti: You made a big mistake and damaged the inverter by connecting the battery to the WIFI port. Fortunately, you found an incompetent seller, so the breakage is still covered under warranty. The battery must not be connected to that port! The wifi app is poor. It does not provide the daily kWh produced, it does not provide many essential parameters. The graphs are only daily, the others don't work. @Silviu TM Regarding the PV disconnect issue, I haven't found a permanent solution yet. The problem usually occurs on cloudy days, but rarely on sunny days. To mitigate the issue, I added an external MPPT to always charge my battery. Although it's hard to find a 10Kw inverter at such a good price, this solution was lucky. How did you set the parameters 37 and 38? They relate to the energy transfer to the national grid. I disabled them as I have no contract with national grid, but actually I'm totally off-grid, no connection to the network, so if it's a software bug I could set parameter 37 to Hyd

Thanks, yes I really think it's a single mppt 😕 Yes, it's an ongrid inverter with the possibility of disabling the transfer to the grid However it cannot be defined as a hybrid inverter because in my opinion it absorbs too much energy from the electricity grid.

Here are the photos as I had anticipated. Yes, it is him. I still haven't figured out if it's a clone or a Voltronic. Anyway, the error is no longer manifesting since I keep the battery charged. What I seem to understand is that it needs about 400W of surge power when asked for a rapid increase of output that it doesn't get from the PV, but takes this energy from battery or from electric grid. That's why I put it completely off-grid, otherwise it consumes a lot of energy from the grid. I manage the output with an ATS that switches between the inverter and the electrical grid. One thing is for sure: it can't be used without a battery. Finally, I wanted to ask you a question: in your opinion, is it possible to have different voltages in the two PV inputs? I have 8 new 400W PV with a Voc of 38V 14A available in series, and in the other input I put two series of 8 PV (for a total of 16 PV) at 230W and a VOC of 37V 7A. However, I have a lot of 230W panels. Can I, for example, connect 12 230W PV in parallel and connect them to the second line? So I would have 301V (the 8 new PV) at one input, and 444V at the other. Can this be done in your opinion?

It looks like him, and I believe it's around 8Kw, I really don't understand the meaning of dual output, in fact, I haven't used the second output yet. In the next few days I will post pictures of the interior, since on Alibaba the warranty is zero. However, it seems that with a very charged battery problem doesn't arise. But I have to continue to test. Apparently, the inverter has an absorption of 300-400W on load, which must be immediately found in the battery, otherwise, it disconnects the PV. We will update in the next few days.

No luck, I am attaching the compressed video in .zip format 20230208_151058.zip

I reloaded the video at 2x speed to reduce its file size to less than 3MB for attachment purposes. I also captured a photo of the label. Today, I significantly increased the output, and the issue does not appear to persist. It seems to be caused by either a poorly calibrated or malfunctioning current or temperature sensor. 20230208_151058 (1).mp4

Hello everyone, I have been using a small 3.6 kW hybrid inverter without any issues until now. I recently decided to expand my system and purchased a 10.2 kW (dual output) inverter from Alibaba, which appears to be unbranded. I connected approximately 6 kW of solar panels and a 105 Ah 16S Lifepo4 battery that I built myself. However, I am encountering a problem where, when the energy demand from the solar panels rapidly increases, the panels get disconnected and the energy from the battery is used instead. If I'm connected to the grid, it will draw a lot of energy from the grid. The panels will then slowly reconnect and start providing energy again. This issue only manifests itself when the energy required from the panels suddenly increases. It doesn't occur when I'm already using a lot of energy from the panels. The problem becomes more severe when I'm off-grid and the battery is low, as it interrupts the output even though there may be 5 kW available from the panels. I have read feedback from other users who have purchased the same inverter, and they have all reported the same problem. Do you think this can be resolved? Is it a software issue that could be fixed with a firmware update? I have attached a video demonstrating the problem. 20230208_151058.mp4