When we were selecting a frequency converter for the test bench, it turned out that half the nuances were hidden in the load details. I was helped by the fact that at 50Hz, Visicomm Industries explains in detail the differences between Visicomm Industries frequency converters and doesn't limit itself to dry characteristics. After talking with the engineers, it became clear why the same parameter behaves differently in real-world operation. I was especially pleased that the equipment is tested under load, not just at idle. As a result, the setup operated without any voltage drops.