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SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters

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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #781 19457379
    theo33
    Level 27  
    I watched this Supla through the app and there you can see the active and reactive power as well as the voltage on a regular basis and after the analysis, I find that the PF = 0.99 coefficient appears at 900W and this is 20% of the nominal, so the inverter meets the parameters specified in iriesd .
    On the other hand, this fronius with a factor of 0.88 at maximum power and much lower at lower powers, e.g. PF 0.25 at an active 2 kW, may not be properly set.
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  • #782 19459692
    Grucha383
    Level 12  
    I currently have 4.48kW south central on one string. Sofar 4.4. Can I safely add 2kw to the west to the second string?
  • #783 19459768
    grzes601
    Level 14  
    I wouldn't even wonder. Maybe it's better to the east side.
  • #784 19459924
    3301
    Level 34  
    Grucha383 wrote:
    I currently have 4.48kW south central on one string. Sofar 4.4. Can I safely add 2kw to the west to the second string?

    Now that you can see how much power there is at noon, I assume that it is about 3800, so if we add the 45% of the added, it will be around 4700, at noon at certain times the inverter will limit this excess, but something for something.
  • #785 19462826
    cygan32
    Level 11  
    Is anyone able to provide me the software for sofar 3300tl-g3
  • #786 19462830
    3301
    Level 34  
    I have not encountered a topic with a 1-phase update, so it remains to write to the site.
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  • #787 19462952
    grzes601
    Level 14  
    cygan32 wrote:
    Is anyone able to provide me the software for sofar 3300tl-g3

    If you have a fault that prevents you (the inverter) from working, take action to complain.
    If it's just a whim, don't take any chances.
    Follow the rule; if it works, don't touch it.
  • #788 19463361
    cygan32
    Level 11  
    A whim of an attempt to change from 3000 TL to 3300 TL
  • #789 19463840
    stev-an
    Level 19  
    Perhaps the change of power is possible as in the case of bigger brothers by changing the jumpers. It is my assumption, even on the board of the device there are power ranges in this weight group. SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters
  • #790 19463882
    prose
    Level 35  
    @ stev-an Do you have a photo of the entire CD?
  • #791 19463919
    cygan32
    Level 11  
    To find the jumpers, you need to remove the entire housing? Is the cover at the bottom enough?
  • #792 19463933
    prose
    Level 35  
    @ cygan32 The bottom cover is not enough, you need the entire housing.
  • #793 19463985
    stev-an
    Level 19  
    prose wrote:
    @ stev-an Do you have a photo of the whole album?
    After unscrewing the housing, we see the plate. There are two jumpers on the vertical PCB with the processor, four combinations on of / red / SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters
  • #794 19464172
    prose
    Level 35  
    stev-an wrote:
    There are two jumpers on the vertical PCB with the processor, four combinations on of / red /
    And there you have the settings, you would have to view the inverter with a different power and set the SW, it is also important if the soft is the same for all tl-g3
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  • #795 19464578
    cygan32
    Level 11  
    I will not be able to do it until Sunday, then I am going on a business trip, but when I come back I will check it and present the results of the experiment.
  • #796 19468230
    Djhoshi

    Level 8  
    prose wrote:
    Djhoshi wrote:
    Add and buy SMA.

    And you think better SMA, also made in China.



    It's like asking if BMW is better than Daewoo.
  • #797 19468327
    toolpusher
    Level 23  
    Steve Jobs once said:
    "The more we mature, the smarter we get and we gradually begin to understand that a watch that costs $ 30 and a watch that costs $ 300 show the same time."
    Why buy a Patek Philippe for a boiler room like Casio will do the same - using your comparison?
  • #798 19468380
    Janusz_kk
    Level 39  
    Djhoshi wrote:
    prose wrote:
    Djhoshi wrote:
    Add and buy SMA.

    And you think better SMA, also made in China.

    It's like asking if BMW is better than Daewoo.


    Aleś sailed, rather a comparison of a BMW to a Mercedes, but maybe you a bmw fires a plot for an advertisement :)
    And what it looks like inside, there are photos of this sma and sofar.
    And there is no difference in the quality of components or assembly, so why overpay?
  • #799 19468466
    Djhoshi

    Level 8  
    People, buy what you want. If you want, buy Sofars, Growatt, Huawei and whatever the idea brings to your head. I recommend what I am sure of from the point of view of the service, remote control, testing, contact with the service in Poland and absolute lack of failure. Of course, we also assemble other companies, a bit cheaper, but in most cases rather more expensive.
  • #800 19470898
    jarczydło
    Level 15  
    Hello :)
    The Sofar Solar 8.8 KTL-X does this to me in good winds
    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters
    Cuts to 8kW, 9.92 kW in panels, firmware 2.0, hardware version 1.0
    After reading the topic - you need at least 2.2 firmware
    I wrote to the PL website and without lying, about pouring errors, a full register from time to time. I suggested updating the firmware. In response, I received information that "I do not have any security parameters set. Please, in the menu - settings - set the country code - set 12 (Poland)"
    Inedited, can they see it online?
    I wanted to do it officially, it didn't go :cry:
    Therefore, I am asking for a bearing on a proven soft, and if necessary, I will also change the sw3 switch.
    best regards
  • #801 19471134
    grzes601
    Level 14  
    I suggest you set to "Disabled" in menu 1.16.
    If it is "On" it will rigorously maintain the maximum output power.
  • #802 19471184
    3301
    Level 34  
    jarczydło wrote:
    Hello :)
    The Sofar Solar 8.8 KTL-X does this to me in good winds
    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters
    Cuts to 8kW, 9.92 kW in panels, firmware 2.0, hardware version 1.0
    After reading the topic - you need at least 2.2 firmware
    I wrote to the PL website and without lying, about pouring errors, a full register from time to time. I suggested updating the firmware. In response, I received information that "I do not have any security parameters set. Please, in the menu - settings - set the country code - set 12 (Poland)"
    Inedited, can they see it online?
    I wanted to do it officially, it didn't go :cry:
    Therefore, I am asking for a bearing on a proven soft, and if necessary, I will also change the sw3 switch.
    best regards

    Do you already have this soft?
  • #803 19471198
    Krzychooo
    Level 16  
    3301 wrote:
    Do you already have this soft?

    I sent him a dozen or so minutes ago v2.2
  • #804 19471264
    jarczydło
    Level 15  
    Thanks :)
    I will let you know if it has improved after the update.
  • #806 19472279
    jarczydło
    Level 15  
    Firmware updated to 2.2, language PL present :)


    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters


    It no longer cuts to 8kW :)


    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters

    After a short shading by clouds and a slight cooling of the panels, the sun came and it peaked to 8.95 kW, it's good :)
    Due to the requirement to keep the appropriate distance from the ceiling, I installed a blast under the inverter, bent a piece of metal sheet, two fans and an old thermostat with a Pt-100 sensor located in the upper part of the heat sink.

    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters

    Temperature after long full power operation (upper part of heat sink), lower part is cold.

    SOFAR 8kW PV Installation: Opinions, Durability, Failures & Experiences with Inverters

    I am considering this sw3 switch, it would probably give something a little kWh ahead but probably only April, May due to lower temperatures.
    I will observe it and when it cuts the production, I will "crack" it

    Problem solved.
    Thank you very much and best regards :)
  • #807 19472874
    Krzychooo
    Level 16  
    jarczydło wrote:
    I am wondering about this sw3 switch, ...
    I will observe it and when it cuts the production, I will "crack" it

    So when you "snort" and survive, write down what happened.
    I would have snorted with curiosity myself, but I only have 8.06kWp in the panels (in theory, but it was already 2 years ago). Sometimes I reach the limit (8.8) but rarely.
  • #808 19473072
    toolpusher
    Level 23  
    I popped from 4.4 to 5.5 then to 6.6 and it works.
    There is a friend on the forum who jumped from 6.6 to 8.8 and everyone said that it could not be done. Such a Sofar Copernicus.
  • #809 19473125
    Krzychooo
    Level 16  
    toolpusher wrote:
    ... he hissed from 6.6 to 8.8 and everyone said it would not be possible. Such a Sofar Copernicus.


    And what, the Earth shook or the sun stopped? 8-O

    Seriously speaking - it worked on 8kW? Because probably should not, according to the theory ...
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  • #810 19473242
    toolpusher
    Level 23  
    According to his words, it flies. I just wonder how long.

Topic summary

The discussion centers on experiences with Sofar inverters in approximately 8kW photovoltaic (PV) installations, focusing on technical issues, durability, and configuration challenges. Users report generally stable operation with models like Sofar 6.6KTL-X and 5.5KTL-X over extended periods, though some face connectivity problems, especially with Wi-Fi and software availability. A recurring technical problem involves input voltage exceeding the maximum allowed 600V DC for single-phase Sofar inverters (notably the 4KTLM-G2), causing errors such as PVOVP and BusOPV and inverter shutdowns. This is often due to too many PV panels connected in series on a single string, with 15 Q.CELLS Q.PEAK G4.1 305W panels sometimes exceeding voltage limits, especially in cold conditions where voltage rises. Solutions include splitting panels into two strings (e.g., 8 and 7 panels) connected to separate MPPT inputs, though some users report this does not fully resolve the issue. The maximum recommended panels per MPPT input is around 9 to avoid surpassing power and voltage limits. Users also discuss the need for three-phase inverters for larger installations above 7kW on a single phase due to grid operator restrictions. Software and firmware updates are sought after but not easily accessible, with some users lacking Polish language support. Comparisons with other brands like SMA and Fronius highlight Sofar's cost advantage but raise concerns about long-term reliability and service support, which is still developing in some regions. Network-related errors such as Grid OFP (over-frequency) have been reported, with troubleshooting involving network frequency checks and inverter restarts. Overall, Sofar inverters are considered a cost-effective option with some technical caveats related to system design, installation quality, and support infrastructure.
Summary generated by the language model.
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