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Chris Hobson

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Everything posted by Chris Hobson

  1. Setting 2 is 50A I have two inverters in parallel but only one currently has PV. 26 53V 27 52.8V
  2. OK so I ended up doing my test just before sunrise. SOC was about 60% Before the test Voltage was 49.38V and I was drawing 5A 2 minutes after switching on a 1500W load the voltage was 48.91V and the current was 40A. The load was switched off and after 2 minutes the voltage had recovered to 49.24V and we were back to 5A. I have 4 Pylontechs
  3. Newer RCD measure the difference between live and neutral and if there is a 30mA it should trip. In your case there might be a joint that allows some current to escape and trip the RCD. After one or two tries the little moisture is driven off and the pump starts. I am now going to go out on a limb here. With RCDs measuring between live and neutral is the earth wire not superfluous. So long as the neutral is grounded what is the earth wire doing. OK earth is an alternative path for stray current. But with a RCD tripping on live and neutral the need for an alternative pathway falls away. Ok I get if the RCD is faulty the earth then comes into play.
  4. A geyser timer can be set and had a battery that lasts weeks.
  5. Hi Chris 5 Pylontechs can easily handle 125A charging so you could set charging to 50A for each inverter and not compromise your batteries. I would install ICC and buy the communication cable for Pylontechs so that you can monitor your system. You may not be able to load to the cloud but a record of how your system behaved on a particular day is invaluable. Setting 27 can be a little higher 52.8V thereabouts. The Pylons BMS does some syncing but only at 95% full (52.0 V) might be too low - I cannot remember). Setting 12 should be 48V and Setting 13 should be 51V but in an off-grid system it is a moot point. Setting 29 should be 47.5V (SOP for Pylons and Axperts).
  6. ... now you just need to go cordless. Man it makes life easy. Come to a off-grid place and you need to do an install - but there is no power yet because they waiting for you.
  7. 12 and 13 look good. 26 looks good if you have flooded batteries (they look like VRLA batteries do you have a datasheet?) 34 does not matter as you have equalising disabled.
  8. The fifth battery? The box on the right is designed to under your Axpert so that it is virtually plug and play. The two cables running to your batteries do not need to be the same length. I don't like what looks like a separate SCC nestled under wiring. Cabling should be within conduit - not sure how to achieve that through the air brick perhaps chisel one or two segments out.
  9. Hi Petum Your should be charging your lead acid batteries at about 10-13% of their Amp hour rating so you have a 100Ah bank therefore you should be charging at 10A. Gel and AGMs can handle higher charging currents but you have flooded batteries. 10A is a good starting place. I think your 30 A is too high.(program 2 and 11).
  10. Welcome Sibusiso There are lots of folk who will be able to help you with your questions.
  11. Hi SM Welcome to the forum. A goodwe may not suit your needs if you plan to run offgrid. It is strictly a hybrid inverter and does not like a gennie as its grid source. If you are off grid then you are going to need a gennie.
  12. Hi I have moved this to a thread of it own as I think it will generate a fair amount of posts and deserved a space of its own. (I included it here otherwise it seems odd but please repond on the other thread (@gabriel - you beat me to the bell so your comment stays ).
  13. This to me is one of the more important aspects to being off-grid. I concur with DB9 manual start.
  14. https://www.solar-log.com/manuals/manuals/en_GB/SolarLog_Meter_Connection_Manual_EN.pdf I cannot remember anymore but on the meter I installed it was terminal 17 and 18 and any of the inputs of the Solar Log.
  15. In your situation I would look definitely look micro inverters. Solar Edge might be a cheaper option.
  16. Hi Javi I have recommissioned my monitoring software and you are right. Cloud edge affect has a larger influence on Amps than on Voltage - I stand corrected.
  17. The SOP for Pylons and Axpert is a cutoff at 47.5V. I have just switched on new monitoring software and will be able to give a more definitive answer oafter a couple of days. I remember that 48V was close to 20% as reported by the BMS.
  18. There is a new app called PV Master
  19. Not quite the same as a Goodwe ES but the process is the same. You look at the WiFi LED rather than the power LED.
  20. You should have never changed that system it was the most efficient system in the country. Now you have added a whole lot of panels and ruined it.
  21. I must differ. Solar panels are made of two silicon layers. The front layer (next to the glass) is doped with phosphorus and the other layer is doped with boron. Phosphor has 5 electrons in it out shell and thus in a crystalline lattice of silicon loses an electron easily and thus a photon of sunlight displaces the electron. The leads of the solar panel connect the front of the panel to the back and electrons do "work on their trip from front to back. They are attracted to the back of the panel due to boron having 3 electrons in it outer shell and is more stable if one adds an electron so that it has 8 electrons in it outer shell 3 of it own 4 that it shares with the nearest 4 silicon atoms and the one donor electron. This is the same reason that phosphorus loses one electron as it has one spare with 9 electrons in its outer shell. If there is no current flow the free electrons stack up and there is a large potential difference between the two layers. As soon as there is current flow the voltage begins to drop and the panel does some work. If we short circuit the the output of the panel there is no resistance and all the little electrons rush from front to back as fast as their little legs can carry them. The panel cannot exceed this current flow. It is interesting to note there is 0.4 A difference between Imp (when it is producing maximum power) and Isc (when it is producing no power). Hence the assertion that panels are constant current devices. What happens when there is cloud edge effect (and due to cold temperatures) more electrons are knocked off but they cannot flow at a rate faster than Isc and so the voltage rises and the panel produces more power.
  22. Hi Gabriel What I think I know of your system and the way it should behave contradict it each other. In this situation let's no get ahead of ourselves and make changes as the system is working. From what I could see in the photos you have a 2x2 array and another 2x2 array. A 25A fuse is good for one array but not two. You say you have only one fuse which has me (con)fused. So somewhere I am missing something. Let's wait for you best sparky friend to give us some direction because now I feel like I am fumbling in the dark.
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