I have a number site where we have installed Quattros in three phase set up.
We are having an issue that when the main supply goes down, (fairly often at the moment in South Africa) one of the phases will report an overload alarm and shut down. There is nowhere near enough loads to cause the overload. It has happened on three of our systems and it doesn't always over load the same phase.
What could be causing this issue?
Any idea what could be causing this issue?