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.
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