wolfandy

Thanks

Hi all is it possible to override the voltage settings for the Pylontechs on the Sunsynk when the inverter is connected to the BMS? I have been running with the widely posted 52.5V/51.8V in my old system for the last 2 years extremely well - and would like to keep these values also going forward. However, I understand that the Pylon BMS will communicate the higher Pylon standard values to the Sunsynk. Is there a way to override these voltage settings without completely disconnecting the BMS?

Thanks all !! Absolutely agree. Am not planning to upgrade again in the near future. Am planning this will be the last of the 'upgrade itch' The price difference is about R150 between the 455W and the 490W My question is what power I can expect even on good days from the 490W panels. With VMP at 38V and the inverter clipping at 11A, will I actually ever get more than 420W from these panels? That was also my starting feeling - so thanks I did originally order the 8kW but then changed to 2x 5kW as it gives me 4 strings vs 2 strings (and I want to connect 3 into different directions)

Hi all am still trying to decide on which panels to use on my additional string and would appreciate some advice. The best price/watt panel that my installer can offer is the JA Solar 490W - however I am not sure if it makes sense on the 5kW Sunsynk. Here the specs: The IMP at 12.90A is significantly higher than the 11A that the Sunsynk MPPT supports. This means, that the production will be clipped and I will never be able to draw the full power from the panels, correct? The alternative would be the JA Solar 455W: This makes more sense, or? What would you recommend? Thanks in advance

Just wanted to say thanks for this - really appreciate it 🙂 Ever since I added my last Pylon US3000 to my pack, I have been having comms problems (e.g., cycles not reporting for the older ones). Turned out my older 3 were running v1.3 and the latest one v2.4. Upgraded all of them to v2.8 tonight without problems - and now all data is reported as should be

Thanks. Am getting 2x 5kW installed tomorrow and will listen out for anything. Fortunately mine are installed in the garage

Does the noise only come from the inverter or also audible from all these devices? If also from TV etc, from the device itself or from their speakers?

Please post a picture of you complete Dashboard 2 from ICC - so that we can you chart at the bottom covering a longer time period

What is the consumption of your loads at that time? I assume that you are running in SBU mode, right? Then the panels are first powering your loads - and the excess of your PV production after powering the loads is then used to charge the batteries. So if I am producing 3kW PV but am using 2kW on the load side (because my hot water geyser is running), then my batteries will only receive 1kW to charge

Sounds good 🙂 I'm hoping that my new system will be installed next week (or at least parts of it...). I'll post something here once I have a first bit of data

In Somerset West Each string facing a different direction (1 towards morning sun, 2 towards evening sun, 3 towards main direction - sorry, not at home at the moment, so struggling with headings 😉) If I remember correctly main direction is around 330 degrees, which would make the other directions around 240 and 60

@leshen advised that the string for MPPT 3 will be no problem. The strings for MPPT 1 and 2 can be up to 9x panels (even though I think I will start 6x on each until I can source more of those panels)

Thanks again to @leshen for taking the time to discuss my plan over the phone and give me valuable advice. Really appreciate it !! 👍

@leshen You seem to be very knowledgeable around the Sunsynk. Would be able to help me with my question above please? Especially for MPPT 3 Thanks in advance 🙂

Hi all I am looking at changing my current panel configuration and adding more panels (use 4 existing ones and add 2 additional ones). My problem is, that the panels that I currently have are not easily available anymore. My installer has offered me used ones (21 month in usage) at what I deem an unacceptable price. I therefore would appreciate your guys' view on if I can mix my current panels together with new alternative ones: My installer wants R 200 more for the used panels than I can get the new panels for. I understand that I will have slight efficiency losses by taking the new alternative ones - but the question is whether this will actually be noticeable (this string is less than 1/3rd of my total PV) I am leaning to the new alternative ones. What would you recommend?

This is the feedback that I just received: Currently for SunSynk inverters we have real time monitoring of all metrics, but you are not able to set settings yet. That part is currently in development. We currently read the "System mode" settings and display that on the main dashboard (example below), but you can't set it yet.

Thanks @TonyR I was under the impression this could only read data from the Sunsynk - but not make changes to the settings. I have just reached out to their support and have asked them to confirm that it is possible to make changes to the 'System Mode' settings through their app

Something definitely to avoid 😜 Then I believe Aux is your only option - but do not know enough how that behaves during nighttime (or only cloudy days - have heard of people ending up with cold water on cloudy days with their geyser on Aux)

Hi @Craigm I do not have my Sunsynk installed yet - so I do not have any practical experience. But from what I have been reading, the Sunsynk should (with the right settings and the CT coil in the right place) push excess PV to the non-essential loads (not on Aux). That way, you should not be 'wasting' any PV. Where is your CT coil installed? To my understanding (and the way I am planning my install) is to put the geyser on the non-essential side of the DB but after the CT coil. With the settings 'Zero Export' and 'Limit to Load Only' enabled, any excess PV should then be used for loads on the non-essential side. And you can use a Sonoff/GeyserWise to control what time the geyser should run I have to admit that I do not know what happens if no grid is available in this situation (but excess PV exceeds non-essential load)? Maybe someone running the Sunsynk can confirm?

Am also trying to determine my best panel config for the upgrade to Sunsynk - although 2x 5kW - and would appreciate a sanity-check of my plan (all figures STC): MPPT 1: 8x 380W panels, VOC 48.82V (=390.56 total), ISC 9.95A MPPT 2: 6x 380W panels, VOC 48.82V (=292.92 total), ISC 9.95A MPPT 3: 8x 465W panels, VOC 51.92V (=415.36 total), ISC 11.59A (NOCT VOC 49.01V = 392.08V total, ISC 9.36A) All strings into different directions. That should work, or not?

I've been running this setup without any problems for the last 1.5 years. The Victron's voltage readings seem to be quite accurate, as the BMS (through ICC) reported 100% SOC every time Yup - that is also what I have now gone for. Managed to change my order from 1x 8kW to 2x 5kW before it got shipped. And selling the Victron made up more than the difference 🙂

Hi TonyR could you please point me to that solution? Thanks

My setup is that MPPT is charging based on own manual voltage settings/readings. The Pylon BMS is connected to ICC, which is controlling the inverter based on SOC reading In my current setup, the battery is not requesting a charge but rather the MPPT deciding that the battery needs to be charged based on voltage readings. I currently do not have any PV connected to my Axpert inverters, so I would only manually charge from grid through them when needed This depends on your array sizes. My planning was to fully utilize the Victron MPPT charge current and rather limit on the inverter the max charge current (as it also powers the loads and is less likely to actually provide the max charge current to the batteries) But for the new system, I think I will rather go the 2x 5kW route instead of the 1x 8kW with external MPPT

Yes. You connect the battery, the MPPT, and the inverter's battery terminal all to the busbar. The inverter will simply think that the power provided by the MPPT is also coming from the battery

Thanks My plan so far was to split my current 12x 380W panels into 8x on the Sunsynk and 4x on the 250V Victron. Then to add 8x 465W new panels on the Sunsynk. But browsing a bit more and reading up on @TheoG's install, I think I might follow the same route he took and rather take 2x 5kW Sunsynk in parallel. That way I would have 4x MPPT and could avoid having to run an external MPPT (and sell it). I probably just would need to add at least another 2x 380W panels to make that string more panels to boost the voltage