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Thank you for the great forum, Safe Driving over the weekend. Sincerely Jason


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  1. Well the other option is to totally switch back to grid power when I am working in my workshop. I wired my system in such a way that I can switch back to grid power without going through the inverter. I did that in case I have a system failure. Thanks for all your advice.
  2. Thanks Introverter I checked with a Fluke but the changeover occurs in like 10-20 milliseconds so the Fluke does not even pick up the voltage drop before it changes over to grid power. You did give me an idea with the ICC and inverter software and which one is making the decision to change back to grid. I am going to switch off my ICC software and check again. What I have also seen is that only motors with a fairly heavy starting load like the compressor is doing it. My pool pump (1500w) and even my milling machine (1500w) doesn't switch the inverter over to grid power.
  3. Thanks guys for all your input. I am still convinced that it has something to do with the batteries. I played around with it this morning by disconnecting the batteries and running my compressor (2200w) and then starting my belt sander (2200w). I mean that is a huge load and it does not switch the inverter back to grid power. As soon as I reconnect my batteries I have the same issue. It is a big hassle (disconnecting the batteries) but maybe that is what I should do to resolve the problem without dishing out more money. Maybe I can connect a big capacitor on these machines that can help with the surge. I don't know if that would be possible. Any ideas ? Thanks again for all your input.
  4. Hi Introvert Thanks for the reply. What you are saying makes sense because when I installed the system I ran it without batteries for a while and with good sun I could start my compressor (2200w) and my beltsander (2200W) one after the other without switching back to grid. The only thing that bothers me is I also had a look at the Pylontec U3000 Plus specs and like you said it states that the batteries are supposed to take a discharge current of 100A for 15 seconds. The batteries are connected in parallel so doesn't that mean a total discharge current of 400A giving you 19200w ? On my second question I just want to give more info. My inverter can handle a open circuit voltage from the the PV panels of 450 volts. I could not connect all of the panels in series because that would have given me 644 V. I have 14 x 350W panels connected to it. I have two banks of 7 panels each in series (326 V and 9A open circuit) and then the two banks gets connected in parallel to the inverter. That means 326 V at around 18 A. That gives me a max of 4900 W. That is already 400 W over the spec of the inverter. On my ICC software I have seen 4948 W already on a good day but that rarely happens. In winter I am running max 3000 to 4000W from the panels and that is why I am looking at something extra during these low sun periods to supplement the wattage. I can add 1 or 2 extra panels to each bank but you are not always there to monitor the system so I am afraid that I might damage my inverter. I am looking at adding another bank of 7 panels that I can connect via a relay controlled by some software looking at the total ampage or wattage. If the amps/wattage are below a certain point it must connect the extra bank and if it goes above a certain point it must disconnect the extra bank. With this setup you will have ample power early and late into the day and during low sun periods like winter and cloudy days. Another thing I was wondering about is if there is not some product on the market that can limit the current or voltage from the panels to keep it in spec for the inverter at all times.Then you can add a couple more panels and you don't have to worry about damaging your inverter.
  5. Good day I have an issue that I hope someone can help me with. My system (Axpert) works fine until I switch on an electric motor. Anything above 1200w will make my system switch back to the grid which is very annoying. This happens all the time doesn't matter if the batteries are full or not. I know an electric motor has a surge when starting up but these inverters are supposed to handle a 10kw surge. I can switch on my geyser as well as my dishwasher which uses 4500w together without any issues. I can have no load on the inverter but if I start a motor bigger that 1200w it switches back to grid power and then later back to solar/battery power. Under normal conditions it is not a problem but when using my milling machine I have broken a couple of milling bits because of this issue. The interruption the switch back (from grid back to solar/battery) causes the drive motor on the mill to stop but the auto feeder keeps on feeding the work piece into the cutter causing broken cutters. I also have a second question. During the winter months my system is struggling to supply my load as well as charging the batteries fully come sundown. According to the specs of the MK2 it can handle 4500w input from the panels. I am already using 4900w of total panels without any issues. I want to add another 2X350w panels. Will this inverter handle that or not. If not is there a way of using more panels during low/short sun periods without damaging the inverter. Any comments will be appreciated. Kenneth My system: Inverter : Axpert 5kva MK2 running with ICC to protech the pylontech's Batteries : 4 x Pylontect 3.5 KW Solar panels : 14 x 350W (Total = 4900W)
  6. Good day Coulomb Thanks for the advise. That was the problem. I have set my float to 52.2V and then I could set my bulk to 53.2V. Again thank you very much.
  7. Hi Chris Yes I did set program 5 to use and I can set all the other settings (according to Pylontech) except program 26. I have done it a couple of times but when I exit and go back it is back to the default at 54V.
  8. Hi Chris No I have not tried that. Will give it a try as soon as I have it set up.
  9. Good day everyone I am new to the solar experience. I have just installed a system that consists of 12 X 350W Canadian solar panels connected to a Axpert MKS II 5K inverter. First I used the system without batteries and it work fine. I then added a Pylontech US3000B battery. I now have a problem setting the bulk charge voltage (which should be 53.2V according to Pylontech ) on the inverter. If I set the setting (program 26) to 53.2V and exit the settings it reverts back to the default setting of 54V. Anybody with advice how to overcome this issue ?


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