Miror

Thanks for the help and if I find the courage to turn them on, I'll let you know what happened.

I watched it for about 15 min. and it was still around 2.7V. I'm afraid to turn it on, because I didn't change anything in the connection of the inverters after the IGBTs were destroyed. Is it possible to measure something else so that I can be sure that it is OK and I can turn it on? Because I don't have any more IGBTs transistors .😁

So I tried it and the voltage difference between L and L is 2.7V. That should be fine, right?

Thanks, I'll try and let you know

Thank you for the quick answer. I have a circuit breaker L and N output on both inverters separately. If I understand it correctly, I should turn on the N breaker on both inverters and then measure the voltage difference on the L outputs, and if it is less than 5V, then I can also turn on the breakers on L. Is this correct?

Hello guys, I want to ask you for help with connecting these inverters in parallel. My procedure is as follows: 1. In the menu setting point 28. for parallel connection on both. 2 turn off the power / turn on the power 3. I start the inverters and then I get error (51 Over current or surge) or (81 Host loss) I have parallel boards connected according to the manual.(foto) I tried to leave the circuit breaker on the AC output turned off. I see that one is set up as master and the other as slave, so I assume that they probably communicate together. But if I turn on the circuit breakers, there is an error again, as if they could not synchronize. Even IGBT transistors have already been destroyed twice, I replaced them and the inverters work normally, but only individually, not in parallel connection. Of course, the inverters have the same firmware. Another thought occurred to me, is it necessary that they be connected to the local grid? Because I don't have them connected to the distribution grid. Thank you for help