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Nuno

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  1. check my post with the drawing, I connected neutral directly to ground in the bus bar
  2. Ok guys, mystery solved! Kind of .... I was experimenting connecting just one battery at a time to check if maybe one of them was fault. Then I noticed something odd. Sometimes when I turned on the battery switch it went to 7V, other times it stayed off. I then tried the same thing with the 3 of them together and got the same result... no consistent behavior. Then it ocurred to me that maybe the fact that I'm switching them on one by one is somehow confusing the inverter<->battery, and by safety it shuts down. So I unplugged the inverter cables, turn them all on (getting
  3. the three of them read 50.4V when disconnected from the inverter
  4. here it goes. the first one is the right connection, the second one is highlighting the mistake. Again, the battery switch was OFF at the time, but the cables were connected to the inverter, thus closing the circuit.
  5. Thanks @Coulomb You are right about the conductivity. I held it longer than 10seconds and after a while the beep went off. Measuring the ohms, i got 3.3 MΩ, at the battery in and 0.3 MΩ, at AC out (no battery connected) About the batteries, these are lithium, so they have 2 + terminals, 2 - terminals, a small lcd and a switch to turn it on. When the battery is off, there is no voltage across the terminals (which was the case when I misconnected the cables by plugging both in the negative terminals) BUT, there is continuity between the 2 + terminals, or between the 2 - terminals
  6. sorry, not sure the right term in english... I mean there is conductivity between the two ends
  7. Its not a Pylon, but very similar! I tried connecting just one and turning the battery switch on, it went back to 6..7V and no sign of life in the inverter
  8. Hi guys I may have not explained myself properly. I think the short was without battery interference... so probably a capacitor? the confusion was due to the terminals in the lithium batteries, I had connected the negatives, and then the positive cable got connected to ANOTHER negative terminal as well. With the batteries disconected I get 50.1 in each. Once I get them plugged in to the inveter, it imediately drops to 6..7V like I said above. I'm actually afraid to try it again in case I fry it even more You mean there is nothing strange in the multimeter reading
  9. I was switching from lead-acid to new lithium batteries, prepared everything well in advance and rehearsed all the connections I had to undo and do. This morning, for some stupid reason, I had an epic failure for a few seconds, I pretty sure I short circuited the inverter battery IN terminals. It actually happened to me a couple of years back, at that time something blew up and smoke came out. This time, no noise, no smell.... but the inverter is pretty much dead. When I connected the batteries and tested voltage it read 7V and went up 0.1 every 5 seconds or so... stabilizing at roun
  10. Ok, I got everything connected and working.... kind of! I need some extra advice with the hopes that I didnt buy a terrible generator The AC breaker in the gen was tripping after a minute or so. Being a 2300W gen I configured max AC In current to 10A. But upon checking the manual, I discovered the max current output is actually 9.2A. So it seems the inverter is pulling too much current and eventually the gen disconnects AC output. Unfortunately for me, the only setting lower than 10A is 2A... which is extremely low I tried playing up a bit with the inverter settings, chan
  11. Hi folks! Due to some unexpected problems with my Axpert Inverter, I got myself a small (2kva) generator for backup power, as I'm living offgrid. It's fine for emergency usage, but now that my inverter is back up, I was wondering if its ok to connect this generator to the inverter to use it as a backup charge for the batteries. In this way I can have my house fully powered instead of using cords from the generator. I never did this before, so bare with my with some basic questions My generator doesn't have any AC output terminals (no idea if its common or not), just two typ
  12. Alright folks, I thought it would be nice to share the development of this story, in case anyone else in the future finds itself in the same spot. Thanks again to all and especially @Coulomb for the advice! So I changed setting 27 (float voltage) to 56.9v and logged the voltage of the batteries as reported by the inverter twice a day. One at night, before bed, and one early morning (without PV power or very little power ~30w). First night: 49.9v Morning: 46.9v (inverter alarm beeping with error 04) Second night: 50.4v Morning: 47.8v (no alarm) Third night: 49.9v Mornin
  13. Thanks @Coulomb Actually I'm in the northern hemisphere, so the weather is cooling down! I'll set the float close to 57 and see if it makes a difference for a few days. Luckily we have some sunny days ahead!
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