CH1
Chapter 1 · Choosing a motor
How a load decides the motor: load families, the induction, synchronous and DC motor in depth, heating and duty cycles, nameplates, and a step-by-step selection with the Tutorial 1.2 catalogue.
5 lessons· 155 min
- 01Drives and their loadsWhat an electric drive is made of, the three families of load, and how to carry a load's torque and inertia through a gearbox to the motor shaft.25 min
- 02The induction motor in depthEquivalent circuit, where the power goes, the torque-speed curve point by point, starting current and what voltage and rotor resistance change.35 min
- 03Synchronous and DC motorsThe synchronous motor's torque angle and pull-out, what excitation does, the three DC motor families, and when each is the right choice.30 min
- 04Duty cycles and motor heatingWhy temperature, not torque, sizes a motor: insulation classes, the thermal time constant, duty types S1 to S10 and the RMS torque method.30 min
- 05Selecting a motorThe selection procedure step by step, reading a nameplate, enclosure and efficiency classes, and three worked cases from Tutorial 1.2 to try yourself.35 min