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An intensive professional development training course on

AC Electrical Motors
and Drives

Troubleshooting, Maintenance & Protection

Why Choose this Training Course?

This AC Electrical Motors and Drives training course covers all topics relating to both AC motors and their drives. AC motors represent industry's workhorse in all applications. It is no exaggeration to suggest that more than half of the energy consumed worldwide is converted by AC motors into work and these are controlled by drives.

This AC Electrical Motors and Drives training course will help in the understanding of maintenance and troubleshooting procedures of such vital industrial equipment means that reduced downtime and increased productivity for the company. The protection is a requirement along with their function and integration with the overall system ensures that such expensive apparatus is well guarded against failures which further offer safety for operations personnel as well.

This AZTech training course will feature:

  • Understanding types of AC motors and their starting methods
  • Principle of operation of variable speed drives
  • Identification of the various types of variable speed drive
  • Trouble shooting and maintenance of variable speed drives
  • Protection of motors and drives

What are the Goals?

By the end of this AZTech training course, participants will be able to:

  • 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
  • Analyse the common faults in a variable speed drive
  • Design the protection requirements for motors and drives

Who is this Training Course for?

This AZTech training course will benefit all levels of professional in an electrical installation. It will enable them to understand operation, maintenance and troubleshooting of AC motors and drives

This AZTech training course is suitable to a wide range of technical professionals but will greatly benefit:

  • Electricians
  • Electrical supervisors
  • Plant electricians
  • Operations & maintenance engineers, supervisors & technicians
  • Maintenance technicians

How will this Training Course be Presented?

This AZTech training course will utilise a variety of proven adult training techniques to ensure maximum understanding, comprehension and retention of the information presented. This includes presentation and discussion of latest videos and technologies on variable speed drives.

Questions are encouraged throughout, particularly at the daily wrap up sessions. This provides opportunities for participants to discuss with the Presenter specific issues and, if possible, find appropriate solutions. Specific goals of each participant will be discussed to ensure that their needs are fulfilled whenever practicable.

The Course Content

Day One: 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

Day Two: 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

Day Three: 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

Day Four: Troubleshooting and Maintenance of Drives

  • Soft starters and selecting the correct VSD
  • VSD analysers 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 scopemeters for VSD

Day Five: 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
  • Q&A and wrap up session

The Certificate

  • AZTech Certificate of Completion for delegates who attend and complete the training course.

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© 2022. Material published by Aztech shown here is copyrighted.

All rights reserved. Any unauthorized copying, distribution, use, dissemination, downloading, storing (in any medium), transmission, reproduction or reliance in whole or any part of this course outline is prohibited and will constitute an infringement of copyright.


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