AIT225 — Industrial Motors and Motor Controls
5 , 3 lecture periods 3 lab periods An introductory course in DC, single-phase AC, and 3-phase AC electric motors and motor control circuits. Includes motor control circuit components, motor control circuit applications, sequence circuits, and timer circuits. Interpret electric motor control component symbols and motor control circuit diagrams/schematics. Describe motor control circuit components, such as contactors, manual starters, control relays, auxiliary contacts and overloads. Install motor control circuit components, such as contactors, manual starters, control relays, auxiliary contacts and overloads. Troubleshoot electrical motor control circuit faults. Outline: Operate and test DC, single phase AC, and 3-phase AC electric motors Operation of DC and AC electric motors Operation of DC motor configurations (e.g., compound, series, shunt) DC and AC motor specifications interpretations DC and AC motor nameplate interpretation Multimeter and mega-ohmmeter (megger) testing DC and AC motors Operation of a DC motor speed controller (function/purpose) Function of a motor brake Operation and function of a bearing grounding ring How to select an AC motor overload Descriptions and calculations of synchronous motor speed, types of motor torque, horsepower, kilowatts, apparent power, true power, motor slip, motor efficiency and operational cost analysis Power factors and power factor corrections Interpret electric motor control component symbols and motor control circuit schematic
Prerequisites: AIT125