This course delves into the application of predictive diagnostic techniques for electric motors, including vibration analysis, current flow testing, and magnetic analysis. It provides comprehensive training on all aspects related to both AC motors and their drives. AC motors are widely used across various industries and are responsible for converting a significant portion of global energy consumption into useful work, with their operation controlled by drives.

Acquiring knowledge of maintenance and troubleshooting procedures for such critical industrial equipment leads to minimized downtime and increased productivity for companies. Protection measures, along with understanding their function and integration within the overall system, ensure that these valuable apparatuses are effectively safeguarded against failures. This not only enhances operational safety but also contributes to the well-being of personnel involved in the operations.

Course Objectives:

The objectives of the program are:

Predictive Maintenance. Predictive parameters applied and technicians ELECTRICAL.
Predictive dynamic techniques.
Predictive techniques are aesthetic.
Avera diagnostic engine vibration using spectral analysis. Description of the technique. Identification number of Avera and board diagnostics. RESOLUTION historical case.
Avera diagnostic engine power by spectral analysis. Description of the technique. Identification number of Avera and board diagnostics. RESOLUTION historical case.
Application of infrared thermograph electric motors. Description of the technique. Concepts of radiation. Discoverable hot spots. RESOLUTION historical case.
Avera diagnostic tests using aesthetic. RESOLUTION historical case.
Avera diagnostics by partial discharges. Description of the technique. Isolated and resolved the status of historical cases.
Avera engine diagnostics using spectral analysis of dispersion magnetic flow. Description of the technique. Identification number of Avera and board diagnostics. RESOLUTION historical case.
How to find and reset the thermal overload switch found on many electric motors
Electric Motor Troubleshooting Guide - Diagnostic Table
Understand the various types of AC motors and starters
Determine the components and operations of variable speed drives
Explain the different types of variable speed drives
Analyze the common faults in a variable speed drive
Design the protection requirements for motors and drives

Who Should Attend?

This program is directed towards supervisors, team leaders, and professionals in maintenance, engineering, and production. it is suitable for who expects to become involved at any stage in project applications and applicable maintenance technologies.

Electrical and mechanical engineers.
Technicians and plant operations and maintenance personnel.
Supervisors, team leaders, and professionals in maintenance engineering departments.

Course Outlines:

AC Motors

Fundamentals of rotating machines theory, principles of operation of AC motors and their construction, rotor slip and torque-speed characteristic
Three-phase AC induction motors, types, construction, characteristics, and applications
Starting of induction motors and associated techniques and acceleration
Speed control requirements of AC motors
Selection of AC motors for industrial applications and service factor
Medium voltage AC motors and applications

Troubleshooting and Maintenance of Motors

Characteristics of motors, enclosures, and cooling methods
Predictive maintenance, motor troubleshooting, and diagnostic testing
Failures in three-phase stator windings, rewind scenarios when a motor fails
Troubleshooting and maintenance of AC motors, routine care
Slow acceleration or refusal to starting of an AC motor, overheating and noise
Modern motor diagnostics and testing instruments

Drives

Fundamental principles and understanding of AC Variable Speed Drives
Power semiconductors, diode, thyristor (SCR), IGBT, MOSFET, GTO, and others.
Voltage-source, current-source, and pulse width modulated (PWM) inverters
Benefits and applications of VSD
Two-level PWM, regeneration and dynamic braking, volts per hertz control
Medium voltage VSDs, switching transients, harmonics, and power factor

Troubleshooting and Maintenance of Drives

Soft starters and selecting the correct VSD
VSD analyzers for converter failures, inverters, and rectifiers
Troubleshooting techniques and maintenance for VSD
VSD parameter guidelines and settings
VSD bearing failures and remedies
Testing instruments and scope meters for VSD

Protection of Motors and Drives

Importance of protection of AC motors requirement and overload protection
Motor overload relay classes
Numerical relays and motor protection
Protection of inverters and electronic converters in VSDs
Case studies, selection, and design of systems and their protection

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