International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Paper deals with testing of a specific centrifugal fan under different conditions – changes in supply voltage and flow rate regulation by throttling, as well as the application of frequency control. A digital portable multifunctional device has been used for measuring and analyzing three-phase electrical circuits. Some intrinsic electrical variables have been measured and recorded, and others have been subsequently calculated. Comments, conclusions and recommendations have been done. The results obtained would be interesting for specialists dealing with this technical equipment.