How to select electrical components? Teach you 20 tips, recommended by senior electrical engineers!

Part.1 Given the capacity of the three-phase motor, find its rated current Formula: Divide the capacity by the number of kilovolts and multiply the quotient by the coefficient of seventy-six. Three-phase 220 kW motor , 3.5 amps. Commonly used 380 motors, one kilowatt and two amps. Low voltage 660 kW motor, 1.2 amps. High voltage…