ESTE 201 - Electric Motors & Maintenance

Credits: 3
LEC hours per week: 2
LAB hours per week: 2
This course teaches electrical and motor safety, motor applications and characteristics, installation, operation, performance, maintenance, and repair of all AC and DC series motors. Wiring for wye and delta applications is also covered. Electronically Commutated Motors (ECM) will be included in the instruction. NEMA and NEC codes will be applied for motor installation, operations, and maintenance. Other topics will include nameplate data, torque, efficiency, connections, reversing rotation, and instruments used for motor maintenance and testing. Formerly: EST 150.
Prerequisite(s): Grade of C or higher in ESTE 104 or instructor permission.
Course Outcomes:

Identify and apply the five rules of safe dress and the nine rules for safe electric motor operation.
Connect and Operate DC series, shunt and compound motors.
Use a Prony-brake to measure motor torque and a photo-tachometer to measure motor speed.
Evaluate motor current draw, motor efficiency, and input/output power using motor performance curves.
Connect and operate the following single-phase AC motors: resistance-start, capacitor-start, permanent-capacitor, and two-capacitor.
Identify proper terminal connections on capacitors.
Operate three-phase induction motors in both forward and reverse.
Calculate the power factor correction for an AC motor.
Use apparent power calculation and power factor correction to determine capacitance.
Differentiate between single-phase and threephase motors.
Describe basic operating principles of threephase motors.

Course Topics:

Introduction to electric motors and electrical motor safety
DC series, shunt, and compound motors
Motor speed, torque, and motor performance
Split-phase motors, capacitor-start AC motors, permanent-capacitor motors, and two capacitor motors
Three-phase induction motors
The NEC, motor installation, maintenance, and troubleshooting
ECM motor history, operating characteristics, and troubleshooting

Course Attribute(s): None