Outlines

 

Day 1:

DC & AC MOTOR BASICS

• Motor terminology
• Types of motors and their suitable applications
• DC Motors
• Induction Motors
• Synchronous Motors
• Stepper Motors
• Special Motors
• Testing equipment
• Field troubleshooting checklist
• Motor selection
• Nameplate data
• Motor ratings
• Energy considerations

Day 2:

SPEED CONTROL OF DC & AC MOTORS

• Introduction to variable speed drives
• Classic control of DC shunt motor
• Classic control of DC series motor
• Classic control of DC compound motor
• Modern control of DC shunt motor
• Modern control of DC series motor
• Modern control of DC compound motor
• Classic control of 3-phase induction motor ( squirrel & slip ring)
• Modern control of 3-phase induction motor ( squirrel & slip ring)
• Designs of variable speed drives

 

Day 3:

PROTECTION OF DC & AC MOTORS

• Protective devices
• Thermal overload for DC & AC motors
• Over current/overload for DC & AC motors
• Under-voltage/over-voltage for DC & AC motors
• Under frequency for AC motors
• Current unbalance or negative phase sequence for AC motors
• Earth fault protection for DC & AC motors
• Stall protection/acceleration time/start up supervision
• Voltage controlled or restrained over current
• Protection settings

Day 4:

TROUBLESHOOTING MOTORS

• Most Common Motor Problems
• Electrical Problems
• Testing Windings for Shorts, Opens and Ground Faults
• Phase Unbalance
• Mechanical Problems
• Phase Rotation Testing

Day 5:

SAFETY ISSUES WHEN TROUBLESHOOTING OR REPLACING MOTORS

• Hazards of rotating equipment
• OSHA Lockout/Tagout requirements
• Determining power supplies and voltages
• Verifying circuits de-energized – safely and correctly!
• Personal Protective Equipment (PPE) requirements
• Visual inspections

Day 6:

PROCEDURES FOR REPLACING A MOTOR

• De-terminating motors
• Setting replacement motors
• Shaft coupling/alignment options
• Electrical checks
• Sizing line conductors
• Using nameplate data for proper connections
• Selecting the best method of motor termination
• Lugs and insulation tapes for termination
• Termination kits
• Methods of verifying proper phase rotation
• Lubrication requirements
• Sizing fuses and overloads
• Final checks prior to re-energizing motor
• Electrical, visual and mechanical checks for startup testing

Day 7:

MOTOR MAINTEANCE

• Testing motor windings
• Megohmmeter testing of motors
• Modern, state-of-the-art predictive maintenance testing for motors
• Bearings and Lubrication
• Motor Storage
• Determining voltage and current imbalance and its effects
• Recommended maintenance practices of NFPA 70B
• Sizing and adjusting overloads per the NEC^®
• Common motor problems and how to find them
• Modern, state-of-the-art predictive maintenance testing for motors
• Bearings and Lubrication
• Motor Storage
• Determining voltage and current imbalance and its effects
• Recommended maintenance practices of NFPA 70B
• Sizing and adjusting overloads per the NEC^®
• Common motor problems and how to find them
• Fixes for common motor problems
• Fixes for common motor problems

Day 8:

FUNDAMENTALS OF CONTROL CIRCUITS

• Types of motor control
• Symbols for control
• Learn to read motor control schematic and ladder diagrams
• Watch motor control circuits operate on-screen before the class
• Learn the basics of PLC ladder logic
• Watch PLC ladder diagrams operate on-screen before the class
• Developing a logical, systematic approach to troubleshooting controls
• Typical control circuit problems and how to find and fix them

Day 9:

MOTOR DRIVES AND SPECIAL CONTROL CIRCUIT APPLICATIONS

• Energy Management and motor drives
• AC and DC drives overview
• Motors for Variable Speed Drives
• Variable Speed Drive Applications
• HVAC applications
• Servo motors and drives for manufacturing
• Review operation of modern automation control such as &pick and place& and conveyor drives

Day 10:

TROUBLESHOOTING CONTROL CIRCUITS

• Relays, Motor Starters and Control Devices
• Reading and Interpreting Ladder Diagrams
• Power Loss
• Control Circuit Industrial Applications
• Electric Motor Drives
• Solenoid-Operated Valves
• Heating Elements

Who Should Attend

 

• Electrical Design engineers
• Electrical New graduate engineers
• Site field engineers
• Maintenance engineers
• Electrical technicians.

Duration

10 Days