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Everything posted by Buyeye

  1. @Dannyboy the inverter van take 6000 watts of pv at upto 18 amps. So higher wattage panels mean you only need one string. I have 16 360 watt panels in 2 parralel strings. 550 watt or 600 watt panels would take up much less space since you would only need one string. Just check the voltage, on the attachment vmp is 39 volts which makes 10 panels perfectly fine but Voc is 46,9 then 10 panels gives you 469 volts which is over 450 volts. Most people say you only have to worry about vmp. CS-Datasheet-HiKu6_CS6W-MS_v1.6_F50A_EN_530-550W.pdf
  2. Welcome you have a good system with a good size battery bank for a lead acid bank. 250ah x 48 volts= 12000watthours 50% of that should last you most of the night. My suggestion would be to leave it on sbu but set the back to ac setting to what the battery manufacturer says corresponds with 50% dod.
  3. What are your values on setting 13? From your values it sounds like you have lifepo4 batteries.
  4. Yes. SUB turns pv off when the batteries are full. The battery voltage then settles down as pv is off. Sbu keeps the pv on so it should float the batteries.
  5. No, you are talking about a grid tied system which an ok option if you are not concerned about power outages.
  6. Hi @John Knowthe plan is good. The sunsynk is a pretty good choice since you have 5kw on the essential side while other brands have around 3kw on the essential side. The solis 6kw hybrid is the same price and allows you to have three 2kw items on at the same time which is just shy of the performance of the sunsynk 8kw. Either way both are good choices.
  7. A new one of the same should not be a problem at all, most people add lithium batteries to their bank as funds allow. The issue with lifepo4 seems to be getting same firmware to allow them to talk to each other if using bms cable.
  8. Hi which area are you working in so members can contact you?
  9. In theory yes they should work. Since I have no practical experience the only thing I can add is that your battery bank will also grow by a lot. For example recommended battery size for 3 inverters is 600amphours.
  10. Did you get rid of that paperweight or do you need help?
  11. Sbu is battery first on this model, it's the only setting that uses battery when the sun sets. 50% depth of discharge is 4,8kwh which should get you to atleast midnight. So loadshedding in that time doesn't matter since you will be on battery anyway or asleep.
  12. @MSR 200amph x 48volts = 9,6kwh is a decent battery bank and you can cycle it to 50% every night. This will help you see a difference in the electricity bill. You have to change to battery first in setting 1. Check with the battery manufacturer manual which voltage corresponds with 50%. Yes you have to connect more plugs to the load as this inverter cannot feed non essentials. The inverter seems to be working as designed, it's supposed to switch off the pv when the battery is full. Lastly and most expensive but actually much cheaper than a year ago. Upgrade to lithium batteries when funds allow. Batteries with 95%-100 depth of discharge are the best since you need less of them.
  13. The behavior I've seen with my powerbox is that the charging source needs to be abundant for the battery to do a top balance every few days. With the bad weather I've been letting it top balance from the grid.
  14. According to the picture it's a high voltage model which means your pv panels should be in series. My guess is you would only need to parallel strings after 10 panels or when voltage is over 500.
  15. Your setup is impressive but it is tied to the power grid. What's your plan if there is a fault with the powerstation lasting a week and it's raining the whole week? This is a rare situation which I have experienced twice, first was 4-5 years when I was living in Roodepoort and the substation went up in flames. It was quite the show but then we didn't have electricity for over a week. Second time was this year in Pietermaritzburg where an overloaded powerstation blew up. I would love to feed in to the grid and will do so as soon as the municipality says I can. In the meantime I have to make my halfway offgrid setup work best for me. Fully offgrid would be adding a gas fired generator and gas stove for me. But that means upgrading the inverter to a one compatible with the generator.
  16. Vacuum tubes are very good but I would have kept the gas geyser as back up for really bad weather. I have a Gas generator in my plans for the future but I need to also upgrade inverter as I have no spare inputs on the current one. The rain we had is good but it lasts the whole week and our power grid issues are far from over. The benefit of gas is that you have a store of it for you to use when all other sources are not there same as petrol or diesel generators. Maybe for daily use it would be most efficient to combine a gas geyser with a solar geyser powered by vacuum tubes. But you have to realize that not everyone has the budget for most efficient but need something to just work when you have to rely on yourself to ensure your house has hot water.
  17. Thanks for the update and Pic, the flat roof seems to make installing all this solar equipment easier from the picture.
  18. It says temperature over 100celcius on the manual. I would also look at the inverter placement after it's fixed.
  19. I'm also not sure what the use case for 24 volt inverters vs 48 volt inverters. On the topic of longevity the "king" vs "value model" I would say manufacturer was clear on which one they spent less on. I will also refrain from making any recommendations.
  20. My guess would be that your battery is full at time that time. If it discharges the battery down to 95% then starts using solar again then it working as designed.
  21. Hi @LeeMun 89 volts would be OK for a low voltage inverter 145vdc but it would be too low for a high voltage inverter 450vdc. Please check the sticker on the side of your inverter to confirm which model you have.
  22. @Jesse I'm not following the charging story which why I haven't commented on that. If you have lithium batteries you connect the bms to the inverter and forget about the batteries. Lithium batteries don't float so the bms take care of all charging settings.
  23. I'm gonna just add a growatt to the mix. I believe you can use the grid input as either grid or generator input. Datasheet_Growatt-SPF5000-ES_2020_ENG.pdf
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