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Understanding A.C. & D.C. Motors
Registration Information
Understanding A.C. & D.C. Motors – ELC 1130
(Approved for 14 Hours – Renewal Training Credit (RTC)
Wednesday, April 9, 2008 8:00am-4:00pm $445
Seminar Location: Seminar is held at Joliet Junior College’s Main Campus, Room T-1050, 1215 Houbolt Road, Joliet, Illinois.
Seminar Description: This seminar is for electricians (or maintenance personnel) who work with electric motors. If you are involved with the selection, installation, maintenance or troubleshooting of electric motors this seminar will be of use to you. The two-day seminar will consist of a series of hands-on exercises, demonstrations, and lecture designed to help the participant learn through doing and observing. There is enough theory explained that someone with a very limited electrical background will be able to master the seminar material.
You will learn
- Why different types of motors are used in different applications.
- Why motor and driven load alignment is critical.
- How to wire a 3-phase motor.
- How to wire a single-phase motor.
- How to maintain a motor.
- How to use test equipment & troubleshoot a motor.
- How to correct for poor motor Power Factor.
- What motor efficiency is and how it relates to your electric bill.
Who will benefit
- Maintenance personnel with little electrical experience
- Personnel who need to be cross trained into the electrical field
- Experienced electricians who desire more understanding of how motors operate and help in their maintenance and troubleshooting
- Supervisors responsible for motor related issues like purchasing, maintenance or testing
Topics
- Electrical Theory
Magnetic fields
Current-voltage-resistance-reactance-impedance
Apparent power-true power-reactive power
Horsepower-torque-power factor-efficiency
- A.C. Motor Construction
Stator-stator iron core
Squirrel cage rotors-wound rotors
Motor frames-bearings
Winding insulation
- D.C. Motor Construction
Field coils-permanent magnets
Armature-commutator-brushes
- Types of Single Phase Motors
Shaded pole
Split phase
Capacitor start
Permanent capacitor
Capacitor start and run
- Types of Three Phase Motors
Squirrel cage rotor
Wound rotor
6. Dual Voltage Motors
9 lead wye and delta dual voltage motors
50 hertz, 6 lead dual voltage motors
- Wiring and Design of Multiple Speed Motors
Constant torque
Constant horsepower
Variable torque
Separate windings-consequential poles
- Understanding Motor Nameplate Information
Service factor
Full load amps
Design
Code letter
Horsepower
Frequency-RPM
Your instructor
Jerry Raino is a member of the technical department at Joliet Junior College. He has been an instructor in the Electrical/Electronic Automated Systems program since 1984. He is also an journeyman electrician. Jerry has a B.S. in Vocational Education from Southern Illinois University and a M.S. in Instructional Technology from Northern Illinois University. He is also the co-author of a training manual, Industrial Motors, published by Energy Concepts (1991).
 IN-HOUSE TRAINING AVAILABLE
For additional information about in-house training, please call Amy Murphy at (815) 280-1418 or email
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