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Achmat

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Everything posted by Achmat

  1. What is your battery SOC when the clipping starts. Looks like your batteries might be fully charged by that time.
  2. That is a dynamic table that adjusts automatically. At least that what the sunsynk does. As the pv production increases, the table will adjust to the new higher value.
  3. How far is the CT from the inverter? Pic of where its connected on the inverter and where the clamp is. Also make sure you are on the latest software.
  4. And enable grid charge in battery settings otherwise it will not recharge when the grid comes back online.
  5. Just move the geyser and change the aux settings to micro inverter input on the inverter.
  6. The aux if used to ac couple will form part of the pass through limit which has been revised to 50A on the 8kw sunsynk. So you can still get 8kw from pv and batteries combined and then the balance taking it up to the 50A limit will either come from the grid or any other ac coupled connection like a grid tied inverter or generator. The 50A pass through is the combined pv, battery + other ac source.
  7. You should be able to do this but then you will not be able to monitor the consumption and production of the grid tie inverter from the the sunsynk. The sunsynk will also not have any control over the grid tie inverter. It's also a bit more complicated to connect it up this way and I would only really consider something like this in a fully off grid install where the sunsynk becomes the grid.
  8. Looking at some of the pv graphs on this thread I would estimate that between ¼ to ⅓ of residential pv is lost due to panels sitting idle after batteries are fully charged and loads are taken care of. How much MW that is I have no idea as there's very little data on what's currently installed in the residential market. My own 10kwp will sit idle from around 12:00 when batteries are full and only needing to supply 1kw to 2kw for the loads.
  9. The Solarman app is delayed and only updated in 5 to 10 minute intervals. Best place to check this is to look at what the inverter is doing. Normally when a high load is switched off, it takes a few seconds for the inverter to stop the excess going back to the grid and you will find some feeding back. If it's constantly feeding back for longer than a few seconds then it could be an issue with the CT coil being not installed properly.
  10. Correct. But I would just leave everything at 40% and prioritise load. Basically if your loads are 2kw and pv is producing 3kw, with your settings, it will send all the pv of 3kw to the batteries and pull 2kw from the grid for the loads. When you prioritise load it takes 2kw from the pv to supply the loads and sends the excess to the battery thus not taking anything from Eskom. BTW that is old software. The system mode on the new software is split over two screens and with start and end times.
  11. Firstly, make sure you have the latest software on your inverter. These setting can be configured on the system work mode screen. You will set the minimum SOC value and it will then manage the batteries according to the schedule. You can also put a tick in priority load and then the inverter will take the solar that's coming to first supply the load and any excess will then go to charging the batteries. I've found this to be the best setting to reduce reliance on the grid.
  12. Would love to see what the upgrades will do in winter as you are taking the pv to over 13kw. Mine is currently at 10.37kw with 34 x 305w Canadian solar panels and I have space to add a lot more. My one MPPT only had one string of 12 panels so I could and another string to it. The other mppt has 2 strings of 11 panels.
  13. What you can do is to connect them one at a time to the inverter and charge each one individually. Then disconnect them and connect them together to let them balance which should take a few minutes. You can then connect them all together to inverter again. Or you can use this method in the video below.
  14. You need to remove the tick for time sync on the inverter and then make sure your timezone is configured correctly in the Solarman app under plant settings.
  15. I have the same inverter and 4 pylontech us3000 batteries. My screens below. Did you balance the batteries for connecting them to the inverter?
  16. From my understand the Voc is a hard limit. The CEO has started in one of his videos that it can actually go to 550v but they spec it to 500v. The inverter also cannot clip the Voc and potentially could burn out if you exceed this limit. Clipping 1A to 2A should also not be to much of a waste on a 10 x 540w string. My panels are rated 9.28 and only every saw this in ideal conditions in the middle of the day in summer. Amps increase with solar irradiation so it starts off low as the sun rises and peaks at midday and then decreases as the sun sets so the clipping would potentially only last for an hour in the middle of the day in summer. Winter having higher rated amps is better. This is my one string with 9.28 rated panels only getting as high as 5.3A on a clear day in Cape Town. Voltage however does not have the same curve as amps. If I had 13A panels instead, I would have only gotten about 8A out of them so I could get more out of higher amp panels in winter and lost a bit in summer, which is actually better as I do not get enough pv generation in winter.
  17. The Voc is a hard limit and should not go over 500v. I'm running my one string at about 415v. The amps can be higher without affecting the inverter negatively. The inverter will just clip the amps lower. Most of the newer ones sold can be upgraded by firmware add the stickers on the side would be outdated. So if you have the 22A version, running two strings if 12A panels, taking the total over 22A, would not be an issue. I hardly ever see my panels get the rated amps so even if yours are rated at 12A you'll probably only see 10.5 to 11A and if it did the inverter would clip it to 22A.
  18. Thanks Was it empty? I think testing with an empty container will do this. You could fill it with water to the level you would use it and test it outside. I don't think you need a full vacuum to remove bubbles from a liquid so you could run a shorter time and just keep it stable.
  19. 10.37kw of solar panels. Its not ideally mounted as its on a 10° angle on my carport. Summer should see better results.
  20. I've been running my 8kw sunsynk for nearly a year now and have never had the inverter derate the output. There are two temp sensors on the inverter one on the AC side and another on the dc side. The AC temp sensor switches the fan on when it reaches 50° and off again when it does to 45°. The fan only runs during this time. Graph below showing temp going up and down as the fan switches on and off.
  21. Interested in one of those if you willing to make one up. Not for solar use but I've started beekeeping and was looking at getting one to get air bubbles out of the honey after extraction. I use the same bucket for my honey so that's actually the perfect size. Willing to pay for it is its not too much effort to make another one. Also source for the pump.
  22. Official pylontech training manual. Can't recall where I got it. Also your battery cable will run cooler with double cables. I have 4 pylontech us3000 batteries and since adding the second cable pack, the cables are hardly warm under full load. Pylontech 195006_PDF1.pdf
  23. Batteries should have double cables when you have 4 or more batteries.
  24. Almost perfect bell curve pv production from Friday.
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