| Since 65% of the electricity generated in the U. S. is used to power
electric motors, power suppliers should be well equipped to discuss motor issues with
customers. This training helps attendees strengthen their knowledge of motor fundamentals,
then builds on these concepts to explain factors affecting motor efficiency and savings.
Participants learn |
| essential motor terminology, how different types of motors operate, how
to read motor nameplates, maintenance of motors, and typical reasons for motor failure.
This training is not only valuable to key accounts staff in their work with larger
customers, but also helps system engineers and operations staff who must deal with service
to larger or remotely located motors. This course gets high marks from power suppliers,
and their customers who attend the 1-day training. |
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Schedule & overview of materials |
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Electric motor introduction & overview |
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How a motor works (poles, magnetic fields, rotors, etc.) |
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Identification of components & their function |
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Definitions of key terms |
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Motor speed, torque and power |
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Classification of motors by general type |
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Differences between motors (induction motors vs. synchronous; squirrel-cage vs. wound rotor) |
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Singling out the most commonly used motor types |
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Classifying three-phase motor types |
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Starting three-phase motors |
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Focusing on induction motors & their characteristics |
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Torque output, torque-speed curves, Design A to D |
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Review of general classifications |
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Starting a single-phase motor vs. running |
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Review of each single-phase motor type |
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Common applications for each type |
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Horsepower rating, RPM, phase, frequency, & duty rating |
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NEMA code letter vs. motor design letter |
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Full load amps vs. locked rotor amps |
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Service factor & power factor |
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Efficiency rating & its meaning |
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Helping customers understand motor usage |
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The basic equation and its use |
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Estimations needed (run time & loading) |
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Example calculations |
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What makes an energy efficient motor? |
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Efficiency ratings, motor losses |
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Comparing standard & high efficiency, motor rewinds, examples |
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MotorMaster computer database |
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Heat is the motor's main enemy |
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Voltage problems, phase problems, ventilation |
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Overloading, duty cycle, lubrication |
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Rotor & starterr problems, insulation |
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Start/stop, protection & speed control |
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Types of overload protection |
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Motor overcurrent protection |
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Motor starters with thermal overload protection (manual & magnetic), reduced voltage starters |
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How they function |
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How they save energy |
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Power quality considerations |
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Using ASD's as phase converters |
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Applications, examples |
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Written-Pole™ motor |
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Review of key concepts covered |
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Questions & adjourn |
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