Islom Khafizov, Komil Gafforov, Bakhodir Oblokulov and Aziz Azimov 2020. ELIMINATION OF ENERGY LOSSES IN PUMPING INSTALLATIONS BY MEANS VARIABLE FREQUENCY DRIVE. International Engineering Journal For Research & Development. 5, 3 (Apr. 2020), 7. DOI:https://doi.org/10.17605/OSF.IO/UCEV4.