In November 2021, Transconverter LLC developed and successfully tried the unique bench SI01 YHL4 which is meant for carrying out of acceptance tests of rectifier-inverter unit BVI 4000 2K Y2.

The bench SI01 YHL4 forms from the three-phase voltage 400 V, 50 Hz the single-phase voltage 1300 V with the output current 950 A, 50 Hz. The bench contains a load cabinet which is necessary for carrying out of acceptance tests of the BVI 4000 2K Y2 unit.

The bench SI01 YHL4 is also has a MSUD (microprocessor-based control system) simulator of 3ES4K electromotive, which ensures the operating mode of the BVI 4000 2K Y2 unit.