Mar 28, 2024  
Course/Program Inventory 
    
Course/Program Inventory

ELM 3030 - AC Motors



Clock Hours: 40

Delivery Mode
on-ground

Prerequisites: Electrical and Electronic Assembler Certificate and
Electricians Helper Certificate

Course Description:
In this course, the student is introduced to Single-Phase and 3-Phase Motor Familiarization followed by Universal Motor Operation, Shaded-Pole Motors, Split-Phase Motors, Permanent Split Capacitor Motors, Capacitor Start Motors, Capacitor Start/Capacitor Run Motors, 3-Phase Wye/Star Motors, 3-Phase Delta Motors, 3-Phase Wye/Star-Delta Motor Starters, 3-Phase Resistive & Inductive Motor Starters, and AC Motor Frequency & Voltage Controllers, all taking a “systems thinking” approach with an emphasis on hands-on troubleshooting. Also included are Motor Nameplates and AC Motor Braking Methods.

Student Learning Outcomes:
Introduction to Motors

Single-Phase and 3-Phase Motor Familiarization  

  • Explain advantages of AC motors over DC motors in industrial applications.
  • Identify DC, AC single-phase, and three-phase power signals.
  • Describe advantages and disadvantages of multiple-phase power as related to motors.
  • Perform the proper wiring techniques for single-phase motors.
  • Test and verify operation of a single-phase shaded-pole motor.
  • Perform the proper wiring techniques for 3-phase wye-configured motors.
  • Test and verify operation of a 3-phase wye-configured motor.

Single Phase Motors

Universal Motor Operation  

  • Identify benefits and drawbacks of universal motors.
  • Configure a universal motor for single-phase AC operation.
  • Demonstrate ways to reverse the direction of a universal motor.

Shaded-Pole Motors  

  • Identify benefits and drawbacks for shaded-pole motors.
  • Describe the configuration of an operational shaded-pole motor.
  • Explain the steps necessary to reverse the direction of a shaded-pole motor.
  • Perform the proper wiring techniques for a shaded-pole motor using single-phase AC.

Split-Phase Motors

  • Describe the construction of single phase motors.
  • Perform the proper wiring techniques for split-phase motors in both CW and CCW rotation directions.

Permanent Split Capacitor Motors

  • Describe the construction of permanent split capacitor motors.
  • Perform the proper wiring techniques for a permanent split capacitor motor in both CW and CCW rotation directions.

Capacitor Start Motors

  • Describe the construction of capacitor start motors.
  • Perform the proper wiring techniques for a capacitor start motor in both CW and CCW rotation directions.

Capacitor Start / Capacitor Run Motors  

  • Describe the construction of capacitor start / capacitor run motors.
  • Demonstrate knowledge of the theory of the capacitor start / capacitor run motor.
  • Perform the proper wiring techniques for a capacitor start/capacitor run motor in both CW and CCW rotation directions.

3-Phase Motors

3-Phase Wye/Star Motors  

  • Describe the construction of 3-phase wye/star motors.
  • Configure a wye/star motor for 3-phase AC operation.
  • Demonstrate ways to reverse the direction of a 3-phase wye/star motor.

3-Phase Delta Motors

  • Describe the construction of 3-phase delta motors.
  • Configure a delta motor for 3-phase AC operation.
  • Demonstrate ways to reverse the direction of a 3-phase delta motor.   

3-Phase Wye/Star-Delta Motor Starters  

  • Describe the need for 3-phase starters.
  • Discuss the advantages and disadvantages of the 3-phase wye/star-delta motor starter.
  • Configure a wye/star-delta motor for 3-phase AC operation.
  • Demonstrate ways to reverse the direction of a wye/star-delta motor.

3-Phase Resistive and Inductive Motor Starters  

  • Describe the need for 3-phase starters.
  • Discuss the advantages and disadvantages of alternative 3-phase motor starters.
  • Set up a 3-phase motor using the primary resistive starting configuration.
  • Demonstrate how to reverse the direction of a primary resistive starting configuration.
  • Set up a 3-phase motor using the primary autotransformer starting configuration.
  • Demonstrate ways to reverse the direction of an autotransformer starting configuration.

AC Motor Frequency and Voltage Controllers

  • Describe the need for 3-phase starters. 
  • Identify the electronic starter benefits over other starters.
  • Demonstrate knowledge of AC motor frequency and voltage controllers.
  • Configure a soft starter configured motor for 3-phase AC operation.
  • Demonstrate ways to reverse the direction of a soft starter configured 3–phase motor.       

Motor Characteristics

Motor Nameplates

  • Examine all IEC and NEMA motor standards for listing on motor nameplates.
  • Categorize AC motor key performance standards.
  • Identify AC motor environmental, efficiency, and service design standards.
  • Classify standards for motor mounts, frames, and enclosures.