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Course Description Introduces the fundamental theories and applications of single-phase and three-phase motors. Topics include: motor theory/operating principles, motor terminology, motor identification, NEMA standards, motor efficiencies, preventive maintenance, troubleshooting/failure analysis, and NEC requirements. | Competency Areas | Hours | | Motor Theory/Operating Principles | Class | 4 | | Motor Terminology | D. Lab | 0 | | Motor Identification | P. Lab/O.B.I. | 3 | | NEMA Standards | Credit | 5 | | Motor Efficiencies | | | | Preventive Maintenance | | | | Troubleshooting/Failure Analysis | | | | NEC Requirements | | |
| Prerequisite: | ELT 119, IFC 100, IFC 101 | | Corequisite: | None | Course Guide | Competency | After completing this section, the student will: | | Motor Theory/Operating Principles | | Components | Identify basic components of an AC motor. | | Motor Terminology | | Components | Identify components of single-phase and three-phase motors. | | Operating characteristics | List operating characteristics of single-phase and three-phase motors. | | Motor Identification | | Single phase motors | Identify five principal types of single-phase motors: shaded pole, split phase, capacitor, repulsion, and series. | | Induction motors | Identify induction motor.
Connect fields of a three-phase motor for low or high voltage. | | NEMA Standards | | Design motors | Recognize NEMA design motors A-D. | | NEMA enclosures | Recognize NEMA enclosures. | | Motor insulation | Determine NEMA class for motor insulation in applications for variable temperatures. | | Motor Efficiencies | | Motor efficiencies | Calculate motor efficiencies of single-phase and three-phase motors. | | Preventive Maintenance | | Preventive maintenance | Plan a preventive maintenance program for AC motors.
Apply a preventive maintenance schedule to AC motors. | | TROUBLESHOOTING/FAILURE ANALYSIS | | Troubleshooting techniques | Apply troubleshooting techniques.
Analyze performance of AC motors.
Determine component failure of AC motors. | | Thermographic surveys | Discuss thermographic use. | | NEC Requirements | | Compliance | Comply with Code requirements on power supplies, grounding, wiring, and interrupting capabilities. |
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