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  1. Busy with a 3 phase installation with 3 x 5kw Sunsynk and 3 Hubble’s. Will post pictures when it’s complete.
    4 points
  2. That is vague terrible advice. Why once a week? Why 50%? Guys you have to actually read before commenting. It's a lithium battery you can cycle it everyday down to 80%(I mean you can use 80% with 20% remaining)and still get minimum 6000 cycles. Cycling it everyday will give an idea of how far you are from self sufficient, you could be 2 batteries from self sufficient depending on your load in the evening.
    4 points
  3. I am not sure what the regs require, but my install has a separate galvanised pipe and sprague for the panels' earth conduit.
    3 points
  4. you're too vague, here, if you're not careful, some jester from this neck of the woods will send you boatloads of Zim dollars... it won't make you happy... too low quality for toilet paper and no value otherwise...
    3 points
  5. weber

    Super-capacitor Batteries

    Anyone thinking they might take a risk on these so-called "super-capacitors" on the basis that LTO is a long-lived battery chemistry, should forget it. That's only the case if the LTOs are properly manufactured and are protected and balanced by a proper BMS. The BMS in this device is rubbish. The photos of the fire should have been enough to convince us of that. But some more information has recently come to light, thanks to a brave volunteer guinea-pig. I received the following email 6 weeks ago. I asked the author to please post the information himself directly, but because he hasn't ye
    3 points
  6. Trev

    Sunsynk 8kw Inverter

    Thank you @TonyH, there is no mixing of AC & DC cables in the trunking. The battery cables run upwards and jump over in flex conduit. The AC cables run alone in the horizontal trunking. When I install my solar strings they will run in their own trunking.
    2 points
  7. Vassen

    Sunsynk SBU settings

    Attached is what my settings look like. you want to set the battery to discharge in stages and still have enough for loadshedding if it does come. This will also depend on your loads though.
    2 points
  8. 1) Check 'Priority Load' - this will direct solar energy to first power the load, with any excess used to charge the battery. 2) Set time of use settings (you can make them all the same). Set SOC/V to your minimum acceptable battery charge. If battery charge is above this, additional load will come from batteries. When battery charge is lower than SOC, then load will be powered by grid. If you check 'Grid' for a time slot, then the battery will also charge to that SOC from grid in that time window.
    2 points
  9. Coulomb

    PV Failure

    Brilliant! Now that you put it like that, I can't see why I didn't think of this before. Perhaps I did and dismissed it for some reason. For reasons that are beyond me, when an Axpert goes from absorb stage to float stage, it does so via "zero charge" stage, which means that the charge current is zero for about 15 seconds. This would be a "dip". Someone mentioned today (and I think others too) that their dips only tend to happen in the afternoon. While that means it might be internal temperature related (it doesn't have to be a hot day, just hot inside the inverter case), it could also be
    2 points
  10. BSLB range of batteries are compatible with Sunsynk as we have confirmed in our testing environment namely: 5,1kw BSLB 6,4kw BSLB 10,2kw BSLB
    2 points
  11. ThatGuy

    PV Failure

    Hi All Just a note that complete PV loss like this also happens to me on my RCT King 5kVA. It doesn't appear to be related to temperature since I've had it both on hot and cold days, but it's always when there's a reasonable load on the system. I also have my panels wired 3S and my operating voltage is more than Bushtracker shows, usually around 110-115V. It seems to be a few second shutdown that happens when the inverter switches from float back to absorb. My assumption is that it only happens under load, because if there's a brief drop in solar input (cloud or something) then the l
    2 points
  12. Haha thanks for your response. I hope they'll give you a super long service life. I'll use mine as a power backup until I can connect PV input. @Tim003 I'm sure your earlier question has been partially answered
    2 points
  13. I've been running an old Cyberpower CPS3500PRO since 2014 (2450w, 24vdc). As you can imagine the original Pb batteries are now very tired. They can barely power the TV and a CFL bulb for 90min. I was shopping around for replacement 200ah batteries when I found these Mecer Lithium "drop in" 12v replacements. I bought 2 at a good price & took the old ones to a scrap yard. I got back about R960 for two batteries (122kg total). Anyway my Cyberpower UPS/Inverter only allows one to adjust the min voltage & charge rate (5-35amps). I've set it to 20amps. I did have an issue when first charging
    2 points
  14. Hi All, Just introducing myself. Very useful forum this! Thanks to all the great contributors who have shared so much knowledge and brought me to this point. I've purchased a Sunsynk 5kW inverter and a Hubble AM2 through the powerforum shop. In the last weekend I overhauled my main DB. This weekend I'm installing the battery and inverter. And I'll then be hooking up with Leshen to commission the battery and inverter so that my warranties hold. Then next step will be PV after i fix some issues on my rooof. Wish me luck.
    2 points
  15. I have a doubt about that 90A. I would not really want to test it. One would probably end up tripping / burning down stuff before getting to 90A. Even the 35A in the 5kw seems a bit suspect to me. My unit went into overload and I don’t think the essential loads were 7kw. This was on an overcast day with very little solar available and batteries were not discharging because of the time of use I had set up. On a clear day, I’ve seen it push the generation to 6.5kw. 5.5 from the built in mppt and another 1000w from the micro inverter on gen port.
    2 points
  16. I don't know, but [email protected]=app 19kW and [email protected]=app 15kW, either way, your EL/CB is probably only rated @63A, I guess, so why worry, else its time to upgrade to 3phase X 40A each and be done with it...
    2 points
  17. LFP may be getting a second wind. It seems that someone has discovered a way to make them nearly as energy dense as NMC, so they are starting to use them in electric vehicles, including Teslas. They're being touted as "cobalt free"; it seems that cobalt is getting a little scarce. With research focusing on LFP for cars (a huge market, about to become much larger), the trickle-down to solar storage may make LFP more attractive again. The 2-3x price differential will put off a lot of buyers. Especially with battery technology developing at a high rate. Not Moore's law of semiconductors fast
    2 points
  18. lancelot

    Sunsynk 8kW

    With regard to the sound of the 8kw inverter. Within 6m you still here it clearly. It switches on and off so no even noice. I will not install it close to me. Spend a little and put it in the garage.
    2 points
  19. The Sunsynk 10kW 3 phase will be available from next week. The 8kW and 12kW has not arrived yet.
    2 points
  20. Just an update. While I still want to do east and west panels, in the meantime time the strings were changed to left and right and on a clear day it seems I can generate 3-5kw additional (subject to consumption as well) than the configuration of top and bottom strings.
    2 points
  21. We have already released patched firmware for the King which fixes the premature float bug (and nothing else). That's presumably what Lionel is referring to below. It can be found here: https://forums.aeva.asn.au/viewtopic.php?p=76178#p76178 I assume you meant to write "PIP-5048MK". Yes, Coulomb recently obtained one, and we plan to start porting more of our PIP-5048MS patches to it in a few weeks time.
    2 points
  22. As far as I know it is a hybrid invertor, but for my purposes it is irrelevant (off-grid). My MPPT's are from MicroCare.
    2 points
  23. Oh and to control the fan, I initially used a sonoff sv, flashes with tasmota and connected a ds18b20 and just dropped the sensor onto the heatsink. Comes on above 32 degrees and goes off below 30. Inverter fan only comes on when I draw heavy loads now. Previously above 2.5kw it would almost always come on.
    2 points
  24. I did the same. Added 2 14cm silent pc fans with a diy Perspex bracket glued together. Helps a lot. For me the fan isn’t really too noisy it’s more the vibration that it creates. So maybe install some anti-vibration material behind the bracket. @Tariqalso installed his 5kw in his kitchen. Maybe he can comment.
    2 points
  25. Shadders

    Dean

    This is a very common problem and is basically due to the sudden loading of the generator which creates a voltage drop and or frequency change which the inverter sees as a fault and kicks it out. It's good to try and load the generator a bit and then turn on the inverter. A suggestion from Coulomb is to run a 200W (I think it was 200W) resistive load and then to start the inverter. What we do for clients is install a bypass switch so their full load is run off the generator and not through the inverter. The inverter is still connected to the generator feed so it basically only draws what curre
    2 points
  26. It's probably more trouble than it's worth, but that's part of the fun of doing it yourself. I might just also spray it black for dramatic effect
    2 points
  27. No problem, will send directly. Do you still live at 420 Nevergonnahappen Lane, Crazytown, USA?
    2 points
  28. I would try paralleling the panels for higher current and lower voltage, the sticker reads 102VDC max for the inverter, but this does not tell the whole story, it may be better at a lower voltage and higher current.
    2 points
  29. My latest Dashboard
    2 points
  30. ThatGuy

    PV Failure

    @Bushtracker Don't worry too much about it, I'd just monitor it and if it becomes more frequent or causes a definite problem then talk to your supplier about swapping the unit out. It seems to just be a symptom of a manufacturer who does just the bare minimum to ensure that their firmware supports all the features they claim in the marketing material, without actually testing it before release... Unfortunately for us, the price is just too good for these inverters! Generally, I think they're worth the few small headaches they cause @Coulomb My apologies, I didn't register that you said "
    1 point
  31. Coulomb

    PV Failure

    I happened to notice a dip myself today. It was an unusually sharp decrease in sunlight, while the car was charged in pulling 6 A (so around 1.5 kW load, quite modest). When the battery is nearly full (it was at about 98.5%), the battery voltage does jerk around a fair bit. Especially if the charge current happens to change sign, from charging to discharging. I'm thinking that the 1.2 V drop threshold for going from float back to bulk (via a dip) is perhaps too low. The battery readings involved are also not load compensated. We had the threshold at 1.0 V for a while, and increased i
    1 point
  32. Coulomb

    PV Failure

    Oops! I forgot to mention that with fully patched LFP flavour firmware, that 4.0 V becomes 1.2 V. I forget who is running what model inverter and what firmware. Right. But 1.2 V could happen, so if you were running fully patched firmware, you could get back to bulk charging when needed. Nothing so elegant. It makes about 500 measurements in that 10 seconds, and if even one of them has the battery voltage above the threshold, the counter resets to zero and it needs to see another 500 measurements after the last one that was above the threshold. That's what I mean about "no excep
    1 point
  33. Better explanation here: https://www.sunsynk.org/post/basic-understanding-of-the-sunsynk-inverter Jump to the 14:53 position.
    1 point
  34. Vassen

    Advice on new System

    Well not really. Even if the voltage is 400V and the current on both string 9.9A, let’s say 10, that’s still 8kw. I saw on the sunsynk forum Keith mentioned something about 2.75kw per mppt, but that doesn’t make sense as my 1 gives around 2.9kw and has a lot more room. exceeding the voltage is a big no no, and we know the current clips, I don’t really know what would happen if the power is exceeded, my guess is that it would just clip the current further to keep the power in line with the max the inverter can accept. No. Either I got used to it, or it’s not that bad anymore.
    1 point
  35. Hi Forumites Was actually testing the waters & wanted to get the important perception of LTO ( Lithium Titanate Oxide) batteries. For those that have not ever seen any stats on these. They boast 25000 cycles, high C charge & discharge rates of up to 10C. Because of this feature basically you can turn your inverter onto high charge rates without fear of damaging the cells. They really shape up to be a promising option. Will Prowse did a special on one of his shows about them. The first batch he got he basically tested incorrectly & then in the second follow up conceded his mist
    1 point
  36. If they are the next best thing, you might as well buy LiFePo4 now, and by the time you have to replace them, the LTO price would have dropped so much that it works out cheaper. With batteries that have a longer life, the risk of them failing due to something else also increases a lot (longer life = more time to develop another issue). Most of the failures of LiFePo4 you hear about is not related to end-of-life, so with that in mind, I would be hesitant to spend 3x the money on something that might last longer.
    1 point
  37. That's only 3.5% oversizing. 12.5% oversizing is definitely OK, and others have used 20% and even 25%. The main problem is the battery voltage overshoots; they are worse with higher panel power. So don't worry about that oversizing, it's fine. The Vmp coefficient will be a %/°C type of figure, not a power. That is, what percentage the Vmp increases (it's usually negative) with a 1K (1 °C) increase in temperature. With MPPT Imax, the 145 V max Voltronic solar charge controllers don't really have a maximum panel current, they have a maximum output current. I don't know which the s
    1 point
  38. It should just work 3S, even at 0°C the Voc would be around 134 V. That will limit the maximum SCC charge current slightly on very cold mornings, but as soon as the panels warm up it will be within the voltage limit for full power (130 V). I'm not a fan of 3S 72 cell panels, as my signature attests. Some say the solar charger will run hotter with 3S than the same panels wired 2S, potentially reducing output. But I've recently heard from someone that claims the opposite: better off with 3S in a hot climate. The total nominal panel power of 4 140 W is fine.
    1 point
  39. If you happen to know someone with a later firmware version removable display, you could perhaps borrow the whole removable display. That way, there is a clear path back to original specifications Since the recommended charge current is 55 A, I would increase that to 50 A, in line with objective 3. Since your battery will be 8S and mine is 16S, you could do worse than using half my voltage settings. Mine were carefully chosen by my colleague Weber, who teaches electricians about solar batteries. Mine are 55.2 and 53.7, so you should consider 27.6 V and 26.9 V (nearest 0.1V rou
    1 point
  40. Ah. In that case, I no longer recommend trying later firmware. When reading 02.xx display firmware, I see testing for 48V, (parts of the firmware code behave differently if 48V is not found) so I assumed that 24V models would use the same firmware. If yours is a fairly recent model (what is the manufacturing date on the small sticker?), then it would appear that 24V support is not production ready yet. It would not be so much of a risk if you could revert to 01.12, or even any other 01.xx display firmware, but this is not possible as far as I know. Firmware availability has been very
    1 point
  41. @williet, if I were you I would direct the question to the manufacturer, who is responsible for the batteries' warranty.
    1 point
  42. Yes, I have a borehole on 3ph. I live on a small-holding, I have cold-rooms and various other items that use over 100kWh per day.
    1 point
  43. If you don't have a PYL setting, then no, it does no good. But you have a removable display on the 24 V King, right? That's what does all the hard work with the BMS protocol. I thought for a while that no 24 V model would offer any sort of BMS interaction at all. But to my surprise, it looks like you get PYL, LIB, and LIC protocols with e.g. removable display version 02.61. Frustratingly, with 02.62, you get none. I have no idea whether the 24 V Pylontech support is finished and working, or if they wanted to do it but decided it was too hard. So if you're feeling adventurous, try ref
    1 point
  44. Their 5G inverters are 3ph hybrid, yes. Downside is they work off of high voltage battery, so you need to fork out a pretty penny for that.
    1 point
  45. Shadders

    Dean

    From my experience the inverter is more upset by the change in frequency than the actual frequency. One customer was running his generator at 47Hz and the inverter was happy but as soon as a water pump turned on the frequency dropped then returned and in that time the inverter kicked out. As soon as things were stable for a bit it was happy again. As a last comment I've tried at home to run a VMIII 5kVA off a 2.5kVA generator and really struggled to get the loading correct so that the generator power was stable even by using a bypass switch. It did work but it took time to balance things ou
    1 point
  46. recre8

    Sunsynk Location dilemma

    Are you planning on adding batteries? Because they also take up quite a bit of space. I added three of these cheapie fans with a flimsy 3D printed bracket on top of mine - they are pretty quiet and I've never had the inverter's own fan come on yet. Maybe buy three of those fans and see if they are quiet enough. Other thing to keep in mind is that the inverter's own fan is likely only going to come on during the day when batteries are charging and loads are heavy.
    1 point
  47. Hi Scoobs, Well done, below is my current Grafana Dashboard to give you some ideas.
    1 point
  48. I am using a modified version of Bloubul7's flows and haven't had any timeout issues. I removed all the parts that were writing to the Inverter and only kept the query side, if you want the full set of flows he posted them online I added the addresses from the Sunsynk_Modbus document into the function node descriptions for reference. All Chinese characters were removed from the reference document to make it easier to read. flows.json sunsynk_modbus (3).docx
    1 point
  49. IMHO disabling the earth leakage is pretty reckless and exceedingly dangerous. That installer should be banned from ever going near a DB again
    1 point
  50. Just to provide some closure to this topic.... We tried a full rewiring of the parallel and load sharing cables. We changed some parallel boards. We flashed updated firmware.... all to no avail. The issue was resolved after reading about another installer of a Victron system who accidentally coupled the AC output to the circuit to the AC input circuit. When the AC grid returned the 2 waveforms were naturally out of sync and the Victron made some unpalatable noises for about 20 seconds before shutting off with the overload light "ON". One of the observations that this person made was
    1 point
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