I found your video while searching for information about this inverter. This is an interesting problem but as the wiring look a bit messy to me (sorry) I can't really get a hold on how this is connected. At around 3:28 in your video you try to explain how the neutral is connected and that confuses me. So let me get this straight, you connected the OUTPUT neutral line to the INPUT neutral line via the busbar which, for the sake of this experiment you put a switch in between? Shouldn't the input (both neutral and fase) be strictly separated from the output circuitry?
Hi, yes, I do have to agree on the wiring. :) Althought, it is because the old inverter (also EASUN 5kW version )has just been removed and the new one was connected when the issue was discovered. Yes, the input AC neutral wire is directly coupled with AC out neutral wire. Most inverters work properly in this configuration - as it should be. The issue is not simple, however, and depends on how your house electrical installation is designed, and specifically I refer to the neutral-ground binding(check how different systems work by having a look at TN-S, TN-C, TN-C-S, TT and other grounding methods). Also, the EASUN itself(Voltronic, Axpert) recommend it to be connected this way. I could probably bypass the issue I am having here by doing the modification of the house electrical installation, but that is not an option. This has to work like this. Take a look at the MPP Solar inverter on it's side - it works like that for years. Even the previous 5kW inverter from EASUN worked in this configuration without issues for years. I had installed many of those inverters and this is the first one having this kind of an issue. EASUN engeneer is on this but can't seem to find what the issue might be. Already removed the SCR (parallel) board as part of the diagnosing process, disconnected all the loads etc, but nothing helps so far. If all fails, I will have to consider re-wiring the house installation, but that is really the last option, since the inverter itself should work in this configuration without issues.
You have by this model no neutral!!! Nehme den output neutral vom input ab!!! Dann funktioniert es!! Die neutralleiter dürfen sich NICHT BERÜHREN BEIDE!!
I found your video while searching for information about this inverter. This is an interesting problem but as the wiring look a bit messy to me (sorry) I can't really get a hold on how this is connected. At around 3:28 in your video you try to explain how the neutral is connected and that confuses me.
So let me get this straight, you connected the OUTPUT neutral line to the INPUT neutral line via the busbar which, for the sake of this experiment you put a switch in between?
Shouldn't the input (both neutral and fase) be strictly separated from the output circuitry?
Hi, yes, I do have to agree on the wiring. :) Althought, it is because the old inverter (also EASUN 5kW version )has just been removed and the new one was connected when the issue was discovered. Yes, the input AC neutral wire is directly coupled with AC out neutral wire. Most inverters work properly in this configuration - as it should be. The issue is not simple, however, and depends on how your house electrical installation is designed, and specifically I refer to the neutral-ground binding(check how different systems work by having a look at TN-S, TN-C, TN-C-S, TT and other grounding methods). Also, the EASUN itself(Voltronic, Axpert) recommend it to be connected this way. I could probably bypass the issue I am having here by doing the modification of the house electrical installation, but that is not an option. This has to work like this. Take a look at the MPP Solar inverter on it's side - it works like that for years. Even the previous 5kW inverter from EASUN worked in this configuration without issues for years. I had installed many of those inverters and this is the first one having this kind of an issue. EASUN engeneer is on this but can't seem to find what the issue might be. Already removed the SCR (parallel) board as part of the diagnosing process, disconnected all the loads etc, but nothing helps so far. If all fails, I will have to consider re-wiring the house installation, but that is really the last option, since the inverter itself should work in this configuration without issues.
You have by this model no neutral!!! Nehme den output neutral vom input ab!!! Dann funktioniert es!! Die neutralleiter dürfen sich NICHT BERÜHREN BEIDE!!