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Everything posted by gooseberry

  1. @recre8can you confirm your issue has been fixed? I'm busy deciding between the Deye and the Sunsynk, would you still go for the Sunsynk over the Deye despite the R3k difference? And can you please tell me what current clamps/wifi modules/earth bonding relays you had to get extra?
  2. Awesome, so looks like the Sunsynk is back in the game. I may just go for that then seeing as there are so many of them out there. That Solis uses normal 48V batteries and are compatible with Pylontech, Dyness, BYD, Freedom Won etc.
  3. Also following with interest. The current clipping issue is why I'm considering th Solis RHI hybrid instead.
  4. I'm deciding between the same but leaning towards the Solis RHI-6K 48ES-5G hybrid. The reason is the 9.9A limit on the 5kw Sunsynk per MPPT which is below that of the larger panels. Another option has popped up and that is the Sofar HYD 6000 ES. And then, a bit more expensive the Goodwe and the larger Sunsynk. Seems there are a lot of choices at the moment. I'm leaning towards the Solis RHI though, Solis just looks legit and has a large international footprint.
  5. The MPPT seems to be designed for 2 60 cell panels in series. They go up to about 340W each, which will be fine, your MPPT will just limit the output power to 600W.
  6. Thanks! I think I'll just go with the manual switch for now. And perhaps at first only connect to the Solis for getting signoff then add the switch and connection to the Axpert. The Solis won't power the geyser alone as is but I can probably replace the element with a 2kW one, otherwise just it will just pull a bit from the grid too.
  7. I can't. The batteries are all in series already. 4x 6V 200ah batteries
  8. I only have a 200ah 24V lead acid bank at the moment. I'm not aware of any 24V Hybrid inverters and don't want to buy more lead acid.
  9. I would need a new inverter and battery (R45k) vs < R10k for this solution
  10. Haha no that's just the negative... it's been a while since drawing circuits. Perhaps instead of doing something so fancy I can just use 2 of these https://thepowerstore.co.za/products/k-n-dual-string-dc-switch-disconnector-25a-220v-11a-460v-per-string and switch manually. Would just need to make sure that you switch both off before switching over.
  11. I want to be able to power non-essential loads like the geyser from the Solis. I think my Axpert and batteries are too small to do AC coupling safely and I doubt the Axpert supports frequency shifting.
  12. No they're about R17k nowadays. Also consider the HOSELECT 24V battery if the Pylontech is too expensive. You may need a BMV/ICC though to determine state of charge. 900W of panels should be enough.
  13. I'm planning on getting a Solis 4G single string grid tied inverter (Probably the 2kW model) and 6x345W JA Solar 60-cell panels. I plan on wiring the panels 3S2P but connect the two strings in series before going into the Solis. I’ll use my current Axpert 3kVA MKS Plus as a backup/off-grid inverter. If Eskom fails I plan to disconnect the PV from the Solis and wire them in parallel to the MPPT on my Axpert to keep the batteries charged. When the grid comes back, I just switch the PV back to the Solis. Can this work? See the attached diagram. I'm thinking of using Solid State Relays as the
  14. By the way, is this your trolley? I see they specify deep cycle batteries only but it's interesting that they said you can use LifePO4. Do you have any information on the LifePO4 battery they offer? Asking, because I know someone with the same trolley whose batteries may be damaged. Someone put the unit on its side on the back of a bakkie and the batteries shorted. https://ecodepot.co.za/products/smart-power-sps-1000-battery-backup-power-supply-with-solar-connector-1000w-batteries-not-included-1
  15. Hi Racer It's likely you have a 24V system (2 12V batteries in series) while the US2000 is a 48V bank. You can look at https://lithiumbatteriessa.co.za/collections/frontpage/products/24v-120ah-3kwh-lifepo4-wall-mount-solar-ups-battery?variant=35354510950567 either get that or buy the cells and BMS listed separately and build it into your trolley. Just check if you can adjust the charging voltages to what Bain recommends on your system.
  16. I'm looking for a 150-200l low pressure evacuated tube thermosiphoning solar geyser with no electrical element in the Overstrand region. This is to be used in an off-grid setting to reduce usage of the gas geyser. We plan to manually open and close a valve feeding it depending on the weather. There are some suppliers online but all seem to be based up north and I'd like to avoid large shipping costs. Any in the Western Cape or alternatively, which of these would you recommend? https://shop.thesunpays.co.za/products/low-pressure-150l-solar-geyser-with-water-level-control-2year-guarant
  17. You don't want to be running off only PV with no batteries or grid to "smooth" out the output. Not even sure if it's possible with the VMIII. Any passing clouds or shadows could interrupt your power and having this happen constantly won't be good for the inverter or the loads. Off-grid == batteries. What makes more sense to me is leaving the swimming pool, geyser, borehole etc on grid and going off-grid (with battery backup) for your normal household loads. That is if hybrid or grid tied isn't an option. Not sure I understand the reasons why not, as long as you don't feed back why can't y
  18. gooseberry


    If you have an Axpert or clone with the 450V rated MPPT you need at least 120VDC on the solar input or about 4 panels in series.
  19. No way to connect 3 12V batteries to give you 24V. Either get another to connect 2s2p or only use 2.
  20. Yes, the EasySolar is only rated for 2400W continuous output power. (3000VA) So it can only contribute around that and can't draw more from the PV unless the charger is drawing additional power. For this setup to maximise PV you'd need a 5kva system.
  21. For interest's sake, can you put two Pylontech US2500 batteries in series if you upgrade your inverter later?
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