EN-3111L
Electrical Machines Lab
Course Description
Theoretical and practical aspects of the operation and maintenance of electrical machinery, including: Electric circuits and wiring, AC and DC motors and generators, transformers, motor controls, and troubleshooting.
Entrance Requirements
Concurrent attendance or successful completion of EN-3111.
Learning Objectives
Demonstrate proficiency in the following skills:
- OICEW-3-1A Plan and use test equipment
- OICEW-3-1B Troubleshoot electrical motor control system
- OICEW-7-1E Parallel generators
Other Objectives
- Measure voltage, amperage, and resistance with a DMM
- Measure amplitude, frequency, period and phase shifts of sine waves using an oscilloscope
- Measure wattage, vars, va, and power factor using a power meter
- Measure insulation resistance with a megohmemeter
- Lock-out and tag out electrical circuits
- Wire a three-way lighting circuit
- Understand the difference between grounded and ungrounded electrical distribution systems
- Connect three phase transformers in delta and wye configurations, and describe the resulting voltage and current relationships
- Demonstrate the operating characteristics of three phase induction motors
- Demonstrate the operating characteristics of single phase motors
- Demonstrate the operation of unloaded and loaded synchronous generators
- Parallel a AC Generator with the bus or another generator
- Demonstrate the operating principles of two-wire and three-wire control circuits
- Demonstrate the operating principles jogging and breaking circuits
- Demonstrate the operating principles reduced voltage and soft starters
- Wire single- and three-phase motors to UVR and UVP motor controllers
- Describe the operation and troubleshoot a magnetic motor controllers
- Understand a thermal overload relay
- Understand sustained overload protection and interrupting capacity
Syllabus
- Residential Wiring
- Lock-out / Tag-out Procedures
- Use of Voltmeter, Ammeter, Wiggy, DMM
- Alternating Current Principles
- Three Phase Transformers
- Three Phase Induction Motors
- DC Generators
- Synchronous Generators
- Generator Paralleling
- Basic Principles of Motor Control
- Basic Control Circuits
- Jogging Control Circuits
- Reduced Voltage Starters
