Program OBJECTIVES:

• Undertake a detailed review of the different types of electric motors available
• Define motor if the class or not as per nameplate codes
• Reading Motors Nameplates and understand all items
• Explosion-proof motors
• Area classification as per ATEX standard
• Learn the different starting and control methods used
• Understand the requirements for electric motors in hazardous areas
• Understand the types of motor protection required for different motor types
• Understand the terms “Intelligent Motor Control” and motor Manager”
• How they are used to control and automate many motor control functions
• Learn about comprehensive electric motor maintenance programmers

WHO SHOULD ATTEND?

• Project Engineers
• Lead and Senior Design and Support Engineers
• Electrical Engineers and Designers – Design and Maintenance Operations
• Electrical Superintendents – Maintenance Operations
• Facilities Engineers
• Process and Chemical Engineers
• Mechanical Engineers
• Maintenance Technicians

PROGRAM OUTLINE:

Day 1: Fundamentals of Electric Motors

• Introduction to Electrical Motors, Basic Theory, and Operation
• Types of Electric Motors
• DC
• AC Synchronous
• AC Asynchronous
• Other
• Commonly used Electric Motors in Industry
• Cast or Rotor
• Wound Rotor and Slipring
• Speed torque curves and motor starting considerations
• High Voltage Electric Motors
• Motor losses
• Motor selections based on load
• Special Motors (Mill Drives, Gas Turbine Helper Motors, etc.)

Day 2: Electric Motor Control and Hazardous Area Requirements

• Motor Control Methods and Techniques o DOL
• Reduced Voltage Start by different techniques
• Variable Speed Drives
• PLC controlled
• Area classification as per ATEX standard
• EXd and EX ed Motors
• Motors Classified for use in Hazardous Areas
• Gland installation and cabling for EX motors

Day 3: Electric Motor Bearings, Efficiency and Harmonics

• Motor Bearings – Design and Types, Plain, Roller and Sleeve, Lubrication.
• THD (total harmonic distortion measurements)
• Explain K factor
• Power quality improvement to increase efficiency

• Power factor correction different methods
• Energy Efficiency of Motors
• Harmonics in Motors from VSDs or other sources

Day 4: Electric Motor Protection

• Motor Protection Requirements – General
• ANSI code for motor protection
• Using multifunction protection relay
• Motor Stall, Acceleration and Running Thermal Limit Curves
• Motor Thermal Capacity and How it is Evaluated in Motor Protection Devices
• Motor Managers and Intelligent Motor Control

Day 5: Electric Motor Maintenance and Repair

• Preventative Maintenance, Corrective Maintenance, and Maintenance Planning
• On-Line Testing of Motors Using Current Signature Analysis can detect:
• Rotor defects
• Stator Problems
• Bearing Problems
• Air Gap Problems
• Off-line Static testing to evaluate: o Stator Condition
• Rotor Health
• Air Gap Anomalies
• Power Circuit Faults
• Motor Insulation Health
• Predictive Maintenance using PD, infrared Camera
• Cable selection and voltage drop calculation
• FMEA and RBI
• Repair or Replacement Decisions, Motor Repair