Electric MotorsElectric Motors

Unit 13

SessionSessionLearning Objectives & Learning Objectives &

AgendaAgendaTLW be able to describe:• AC vs. DC – what’s the difference?

When do you use which one?• Use of AC motors in industry• Parts and components of motors and

their P&ID symbols• How motors work• Hazards and mitigations• Monitoring and maintenance

AC versus DCAC versus DC

• AC– Can reverse polarity– Can reverse

direction

• DC– Voltage remains

constant– Current flows in one

direction

Uses of Electrical Uses of Electrical MotorsMotors

• Driver• Used with

– pumps– compressors– mixers– fans

Operations of an AC Motor

AC Motor

Components of Electric Components of Electric MotorsMotors

• Frame• Shroud• Stator• Rotor• Fan• Others

Electric Motor Electric Motor Hazards & MitigationsHazards & Mitigations

• Individual

• Equipment

• Production

• Environment

Monitoring and Monitoring and MaintenanceMaintenance

• Look• Listen• Touch

Electric Motor Electric Motor SymbolsSymbols

• Refer to P&ID diagram

Independent Practice

• Complete electric motors worksheet

• Homework - Electricity