Course length: Half day
Available as a condensed course: No
Maximum number of students: N/A

The seminar begins with a brief review of AC motor theory and operation that includes flux pattern, types of losses, NEMA design designations and test procedures. It also covers design considerations for slip-ring and synchronous motors, requirements for reduced starting voltage, and formulas for redesigning single-phase and polyphase AC equipment. To ensure a thorough, working knowledge of the subject, you’ll practice solving design problems for each possible change that can be made in the rating of an AC motor.

Partial list of topics covered

• How an AC motor operates
  • Flux patterns
  • Breakdown of losses
  • NEMA design designations
  • Slip-ring motors
  • Synchronous motors
  • Reduced voltage starting
  • Testing
•  Redesigning polyphase motors
  • Changing voltage
  • Changing horsepower
  • Changing frequency
  • Changing phases (between two-phase and three-phase)
  • Changing circuits
  • Changing span
  • Changing connection (between Wye and Delta)
  • Converting concentric windings to lap windings
  • Changing poles
  • Changing one speed to two speed (one winding and two winding)
  • Calculating a winding for a bare core
•  Redesigning single-phase motors

Instructor(s) available to teach the course: 

• Tom Bishop, P.E., EASA Senior Technical Support Specialist
• Jim Bryan, EASA Technical Support Specialist (retired)
• Mike Howell, EASA Technical Support Specialist
• Chuck Yung, EASA Senior Technical Support Specialist

Cost

• Chapter/Region fee (+expenses): $750 plus $20/student for handout
• Member company fee (+expenses): $1,500 plus $20/student for handout
• Nonmember fee (+expenses): $3,000 plus $20/student for handout

(Additional fees may apply if travel time exceeds 5 hours. Contact EASA for details.)

To schedule a private seminar for your group, contact:

Dale Shuter, CMP
Meetings & Expositions Manager
+1 314 993 2220, Ext. 3335
dshuter@easa.com

In addition to the seminar fees, the seminar sponsor will be responsible for:

• All seminar promotion involved
• Breaks (if provided)
• Meeting room (approx. 1,000 square feet)
• Instructor's travel and living expenses
• Audio/visual equipment
• Shipping costs of materials
• Meals (if provided)