Good morning everyone,
I have an error when the simulation starts. I solved this error adding a ground system before a delta transformer. However, I did not understand the source of this error in my circuit. Moreover, if I delete the transformer and the ground system the simulation works. Therefore, I think it is a problem linked to connection between à system whit switchs and delta transformer. Could you help me? Do you have some explications?
I attached the screen shots of the error and the circuit.
Thank you for your time.