Electrical Equipment: Transformers, Motors, Variable Speed Drives, Generators and Protective Systems Selection, Installation, Operation, Testing, Troubleshooting and Maintenance Course
Electrical and Power Engineering

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Electrical Equipment: Transformers, Motors, Variable Speed Drives, Generators and Protective Systems Selection, Installation, Operation, Testing, Troubleshooting and Maintenance Course
Course Overview:
This course is tailored to ensure that the delegates are able to explain the principles, function, maintenance and fault diagnosis of different kinds of electrical equipment at the conclusion of the training. Knowledge and skills will be acquired to specify, install and maintain transformers, motors, generators, variable speed drives and protective systems.
It also stresses on diagnostic testing, fault location, as well as the establishment of predictive and preventive maintenance techniques to optimize productivity, dependability, and durability.
The course is designed for engineers and technical personnel and contains the important aspects of reading theory and applying it, which includes, but is not limited to, basic principles of machines, power electronics, motor speed controllers, synchronous machines, generators, and generator testing.
Course Objectives:
By the end of the training, participants will be able to:
· Specify, select, install, operate, test, troubleshoot, and maintain various types of electrical equipment such as transformers, motors, variable speed drives, generators, circuit breakers, switchgears, and protective systems.
· Carry out diagnostic testing and inspection, advanced fault detection techniques, critical components, and common failure modes for electrical equipment.
· Apply selection criteria, commissioning requirements, predictive and preventive maintenance, reliability, testing, and cost estimation for electrical equipment.
· Implement the maintenance techniques required to minimize the operating cost and maximize the efficiency, reliability, and longevity of electrical equipment.
Who Should Attend?
This course is intended for Engineers and other Technical Staff, who are involved in the selection, installation, operation, testing, troubleshooting or maintenance of electrical equipment.
Course Outlines:
FUNDAMENTALS OF ELECTRIC SYSTEMS
- Capacitors
- Current and Resistance
- The Magnetic Field
- Faraday’s Law of Induction
- Lenz’s Law Inductance
- Alternating Currents
- Three-Phase System
INTRODUCTION TO MACHINERY PRINCIPLES
- Electric Machines and Transformers
- Common Terms and Principles
- The Magnetic Field
- Magnetic Behavior of Ferromagnetic Materials
- Faraday’s Law – Induced Voltage from a Magnetic Field Changing with Time
- Core Loss Values
- Permanent Magnets
- Production of Induced Force on a Wire
- Induced Voltage on a Conductor Moving in a Magnetic Field TRANSFORMERS
- Importance of Transformers
- Types and Construction of Transformers
- The Ideal Transformer
- Impedance Transformation Through a Transformer
- Analysis of Circuits Containing Ideal Transformers
- Theory of Operation of Real Single-Phase Transformers
- The Voltage Ratio Across a Transformer
- The Magnetizing Current in a Real Transformer
- The Dot Convention
- The Equivalent Circuit of a Transformer
- The Transformer Voltage Regulation and Efficiency
- The Autotransformer
- Three-Phase Transformers
- Transformer Ratings
TRANSFORMER COMPONENTS AND MAINTENANCE
- Introduction, Classification of Transformers
- Main Components of a Power Transformer
- Types and Features of Insulation
- Forces
- Cause of Transformer Failures
- Transformer Oil
- Gas Relay and Collection Systems
- Relief Devices
- Interconnection with the Grid AC MACHINE FUNDAMENTALS
- The Rotating Magnetic Field
- The Induced Voltage in AC Machines
- The Induced Torque in a Three-Phase Machine
- Winding Insulation in AC Machines
- AC Machine Power Flow and Losses
INDUCTION MOTORS
- Induction Motor Construction
- Basic Induction Motor Concepts
- The Equivalent Circuit of an Induction Motor
- Losses and The Power-Flow Diagram
- Induction Motor Torque-Speed Characteristics
- Control of Motor Characteristics by Squirrel-Cage Rotor Design
- Starting Induction Motors
RECAP ➢ Using this course overview, the instructor(s) will brief participants about the topics that were discussed today and advise them of the topics to be discussed tomorrow.
SPEED CONTROL OF INDUCTION MOTORS
- Speed Control by Changing the Line Frequency
- Speed Control by Changing the Line Voltage
- Speed Control by Changing the Rotor Resistance
- Solid-State Induction Motor Drives
- Motor Protection
- The Induction Generator
- Induction Motor Ratings
MAINTENANCE OF MOTORS
- Characteristics of Motors
- Enclosures and Cooling Methods
- Application Data
- Design Characteristics
- Insulation of AC Motors
- Failures in Three-Phase Stator Windings
- Predictive Maintenance
- Motor Troubleshooting
- Diagnostic Testing for Motors
- Repair and Refurbishment of AC Induction Motors
- Failures in Three-Phase Stator Windings
POWER ELECTRONICS, RECTIFIERS, AND PULSE-WIDTH MODULATION INVERTERS
- Introduction to Power Electronics
- Power Electronics Components
- Power and Speed Comparison of Power Electronic Components
- Basic Rectifier Circuits
- Filtering Rectifier Output
- Pulse Circuits
- A Relaxation Oscillator Using a PNPN Diode
- Pulse Synchronization
- Voltage Variation by AC Phase Control
- The Effect of Inductive Loads on Phase Angle Control
- Inverters
VARIABLE SPEED DRIVES
- Basic Principles of AC Variable Speed Drivers (VSD’S)
- Inverters
- Input Power Converter (Rectifier)
- DC Link Energy
- Output IGBT Inverter, Input Sources for Regeneration or Dynamic
- Regeneration
- PWM-2 Considerations
- Transients
- Harmonics Power Factor and Failures
- Thyristor Failures and Testing
- AC Drive Application Issues
- AC Power Factor
- IGBT Switching Transients
- Cabling Details for AC Drives
- Cable
- Motor Bearing Currents
- Summary of Application Rules for AC Drives
- Selection Criteria of VSD’s
- Maintenance
- Common Failure Modes
- Motor Application Guidelines
SYNCHRONOUS MACHINES
- Physical Description
- Pole Pitch: Electrical Degrees
- Airgap and Magnetic Circuit of a Synchronous Machine
- Synchronous Machine Windings
- Field Excitation
- No-Load and Short-Circuit Values
- Torque Tests
- Excitation of a Synchronous Machine
- Machine Losses
RECAP
➢ Using this course overview, the instructor(s) will brief participants about the topics that were discussed today and advise them of the topics to be discussed tomorrow
SYNCHRONOUS GENERATORS
- Synchronous Generator Construction
- The Speed of Rotation of a Synchronous Generator
- The Internal Generated Voltage of a Synchronous Generator
- The Equivalent Circuit of a Synchronous Generator
- The Phasor Diagram of a Synchronous Generator
- Power and Torque in Synchronous Generators
- The Synchronous Generator Operating Alone
- Parallel Operation of AC Generators
- Operation of Generators in Parallel with Large Power Systems
- Synchronous Generator Ratings
- Synchronous Generator Capability Curves
- Short-Time Operation and Service Factor
GENERATOR COMPONENTS, AUXILIARIES, AND EXCITATION
- Introduction, The Rotor, Turbine-Generator Components, Cooling Systems, Shaft Seals and Seal Oil Systems, Stator Winding Water Cooling Systems, Other Cooling Systems, Excitation, The Voltage Regulator, The Power System Stabilizer, Characteristics of Generator Exciter Power Systems (GEP), Generator Operation
GENERATOR MAIN CONNECTIONS
- Introduction
- Isolated Phase Bus Bar Circulatory Currents
- System Description
PERFORMANCE AND OPERATION OF GENERATORS
- Generator Systems
- Condition Monitoring
- Operational Limitations
- Fault Conditions
GENERATOR SURVEILLANCE AND TESTING
- Generator Operational Checks (Surveillance and Monitoring)
- Generator Diagnostic Testing